annotate main.c @ 4:fd28c7358ce8

more additions, set ports
author Matt Johnston <matt@ucc.asn.au>
date Tue, 04 Jun 2013 22:12:01 +0800
parents 0a6cbbb8c2b7
children 87c8d0a11906
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1 #include <stdio.h>
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2 #include <string.h>
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3 #include <stddef.h>
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4 #include <stdbool.h>
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5 #include <stdlib.h>
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6 #include <avr/io.h>
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7 #include <avr/interrupt.h>
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8 #include <avr/sleep.h>
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9 #include <util/delay.h>
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10 #include <avr/pgmspace.h>
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11 #include <avr/eeprom.h>
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12 #include <avr/wdt.h>
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13 #include <util/atomic.h>
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14 #include <util/crc16.h>
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15
2
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16 #include "hmac-sha1.h"
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17
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18 //#include "simple_ds18b20.h"
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19 //#include "onewire.h"
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20
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21 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
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22 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
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23
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24 // TICK should be 8 or less (8 untested). all timers need
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25 // to be a multiple.
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26
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27 #define TICK 1
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28 #define SLEEP_COMPARE (2000000/64) // == 31250 exactly
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29 #define NKEYS 6
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30 #define KEYLEN 20
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31
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32 #define BAUD 19200
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33 #define UBRR ((F_CPU)/8/(BAUD)-1)
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34
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35 // XXX
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36 #define PORT_PI_BOOT PORTD
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37 #define DDR_PI_BOOT DDRD
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38 #define PIN_PI_BOOT PD5
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39
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40 // XXX
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41 #define PORT_PI_RESET PORTD
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42 #define DDR_PI_RESET DDRD
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43 #define PIN_PI_RESET PD6
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44
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45
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46 #define PORT_LED PORTD
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47 #define DDR_LED DDRD
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48 #define PIN_LED PD7
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49
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50 // #define HAVE_UART_ECHO
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51
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52 // stores a value of clock_epoch combined with the remainder of TCNT2,
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53 // for 1/32 second accuracy
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54 struct epoch_ticks
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55 {
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56 uint32_t ticks;
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57 // remainder
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58 uint8_t rem;
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59 };
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60
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61 // eeprom-settable parameters, default values defined here.
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62 // all timeouts should be a multiple of TICK
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63 static uint32_t watchdog_long_limit = (60L*60*24);
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64 static uint32_t watchdog_short_limit = 0;
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65 static uint32_t newboot_limit = 60*10;
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66
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67 // avr proves itself
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68 static uint8_t avr_keys[NKEYS][KEYLEN] = {{0}};
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69
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70 // ---- Atomic guards required accessing these variables
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71 // clock_epoch in seconds
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72 static uint32_t clock_epoch;
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73 // watchdog counts up
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74 static uint32_t watchdog_long_count;
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75 static uint32_t watchdog_short_count;
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76 // newboot counts down
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77 static uint32_t newboot_count;
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78 // oneshot counts down
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79 static uint32_t oneshot_count;
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80
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81 // ---- End atomic guards required
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82
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83 // boolean flags
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84 static uint8_t watchdog_long_hit;
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85 static uint8_t watchdog_short_hit;
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86 static uint8_t newboot_hit;
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87 static uint8_t oneshot_hit;
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88
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89 static uint8_t readpos;
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90 static char readbuf[50];
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91 static uint8_t have_cmd;
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92
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93 int uart_putchar(char c, FILE *stream);
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94 static void long_delay(int ms);
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95 static void blink();
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96 static uint16_t adc_vcc();
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97 static void set_pi_boot_normal(uint8_t normal);
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98
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99 static FILE mystdout = FDEV_SETUP_STREAM(uart_putchar, NULL,
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100 _FDEV_SETUP_WRITE);
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101
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102 // thanks to http://projectgus.com/2010/07/eeprom-access-with-arduino/
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103 #define eeprom_read_to(dst_p, eeprom_field, dst_size) eeprom_read_block((dst_p), (void *)offsetof(struct __eeprom_data, eeprom_field), (dst_size))
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104 #define eeprom_read(dst, eeprom_field) eeprom_read_to((&dst), eeprom_field, sizeof(dst))
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105 #define eeprom_write_from(src_p, eeprom_field, src_size) eeprom_write_block((src_p), (void *)offsetof(struct __eeprom_data, eeprom_field), (src_size))
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106 #define eeprom_write(src, eeprom_field) { eeprom_write_from(&src, eeprom_field, sizeof(src)); }
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107
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108 #define EXPECT_MAGIC 0xdf83
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109
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110 struct __attribute__ ((__packed__)) __eeprom_data {
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111 uint32_t watchdog_long_limit;
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112 uint32_t watchdog_short_limit;
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113 uint32_t newboot_limit;
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114
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115 uint8_t avr_keys[NKEYS][KEYLEN];
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116
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117 uint16_t magic;
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118 };
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119
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120 // Very first setup
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121 static void
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122 setup_chip()
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123 {
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124 cli();
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125
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126 // stop watchdog timer (might have been used to cause a reset)
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127 wdt_reset();
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128 MCUSR &= ~_BV(WDRF);
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129 WDTCSR |= _BV(WDCE) | _BV(WDE);
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130 WDTCSR = 0;
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131
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132 // set to 8S, in case sha1 is slow etc.
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133 wdt_enable(WDTO_8S);
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134
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135 // Set clock to 2mhz
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136 CLKPR = _BV(CLKPCE);
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137 CLKPR = _BV(CLKPS1);
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138
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139 // enable pullups
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140 // XXX matt pihelp
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141 PORTB = 0xff; // XXX change when using SPI
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142 PORTD = 0xff;
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143 PORTC = 0xff;
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144
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145 // 3.3v power for bluetooth and SD
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146 DDR_LED |= _BV(PIN_LED);
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147
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148 // set pullup
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149 PORTD |= _BV(PD2);
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150 // INT0 setup
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151 EICRA = (1<<ISC01); // falling edge - data sheet says it won't work?
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152 EIMSK = _BV(INT0);
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153
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154 // comparator disable
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155 ACSR = _BV(ACD);
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156
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157 // disable adc pin input buffers
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158 DIDR0 = 0x3F; // acd0-adc5
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159 DIDR1 = (1<<AIN1D)|(1<<AIN0D); // ain0/ain1
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160
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161 sei();
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162 }
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163
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164 static void
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165 get_epoch_ticks(struct epoch_ticks *t)
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166 {
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parents:
diff changeset
167 ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
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parents:
diff changeset
168 {
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parents:
diff changeset
169 t->ticks = clock_epoch;
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parents:
diff changeset
170 t->rem = TCNT2;
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parents:
diff changeset
171 }
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172 }
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diff changeset
173
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diff changeset
174 static void
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diff changeset
175 setup_tick_counter()
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diff changeset
176 {
2
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parents: 1
diff changeset
177 // set up counter1
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parents: 1
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178
0
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179 // set up counter2.
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180 // COM21 COM20 Set OC2 on Compare Match (p116)
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diff changeset
181 // WGM21 Clear counter on compare
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182 //TCCR2A = _BV(COM2A1) | _BV(COM2A0) | _BV(WGM21);
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183 // toggle on match
2
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parents: 1
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184 TCCR1A = _BV(COM1A0);
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parents: 1
diff changeset
185 // systemclock/1024
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parents: 1
diff changeset
186 TCCR1B = _BV(CS12) | _BV(CS10);
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parents: 1
diff changeset
187 TCNT1 = 0;
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parents: 1
diff changeset
188 OCR1A = SLEEP_COMPARE;
0
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189 // interrupt
2
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parents: 1
diff changeset
190 TIMSK1 = _BV(OCIE1A);
0
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191 }
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192
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193 static void
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diff changeset
194 uart_on()
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195 {
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diff changeset
196 // Power reduction register
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197 PRR &= ~_BV(PRUSART0);
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198
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199 // All of this needs to be done each time after turning off the PRR
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200 // baud rate
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201 UBRR0H = (unsigned char)(UBRR >> 8);
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diff changeset
202 UBRR0L = (unsigned char)UBRR;
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parents:
diff changeset
203 // set 2x clock, improves accuracy of UBRR
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parents:
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204 UCSR0A |= _BV(U2X0);
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parents:
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205 UCSR0B = _BV(RXCIE0) | _BV(RXEN0) | _BV(TXEN0);
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parents:
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206 //8N1
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207 UCSR0C = _BV(UCSZ01) | _BV(UCSZ00);
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208 }
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209
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diff changeset
210 static void
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parents:
diff changeset
211 uart_off()
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parents:
diff changeset
212 {
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parents:
diff changeset
213 // Turn off interrupts and disable tx/rx
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diff changeset
214 UCSR0B = 0;
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parents:
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215
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parents:
diff changeset
216 // Power reduction register
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217 PRR |= _BV(PRUSART0);
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parents:
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218 }
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diff changeset
219
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parents:
diff changeset
220 int
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parents:
diff changeset
221 uart_putchar(char c, FILE *stream)
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parents:
diff changeset
222 {
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parents:
diff changeset
223 // XXX could perhaps sleep in the loop for power.
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parents:
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224 if (c == '\n')
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parents:
diff changeset
225 {
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diff changeset
226 loop_until_bit_is_set(UCSR0A, UDRE0);
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diff changeset
227 UDR0 = '\r';
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parents:
diff changeset
228 }
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diff changeset
229 loop_until_bit_is_set(UCSR0A, UDRE0);
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diff changeset
230 UDR0 = c;
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parents:
diff changeset
231 if (c == '\r')
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parents:
diff changeset
232 {
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parents:
diff changeset
233 loop_until_bit_is_set(UCSR0A, UDRE0);
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parents:
diff changeset
234 UDR0 = '\n';
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parents:
diff changeset
235 }
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
236 return (unsigned char)c;
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parents:
diff changeset
237 }
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parents:
diff changeset
238
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
239 static void
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
240 cmd_reset()
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
241 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
242 printf_P(PSTR("reset\n"));
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
243 _delay_ms(100);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
244 cli(); // disable interrupts
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
245 wdt_enable(WDTO_15MS); // enable watchdog
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
246 while(1); // wait for watchdog to reset processor
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
247 }
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248
2
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parents: 1
diff changeset
249 static void
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Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
250 cmd_newboot()
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Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
251 {
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Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
252 set_pi_boot_normal(1);
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parents: 1
diff changeset
253 ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
254 {
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parents: 1
diff changeset
255 newboot_count = newboot_limit;
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parents: 1
diff changeset
256 }
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Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
257 printf_P(PSTR("newboot for %d secs"), newboot_limit);
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parents: 1
diff changeset
258 }
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Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
259
1
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parents: 0
diff changeset
260
0
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parents:
diff changeset
261
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
262 static void
1
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parents: 0
diff changeset
263 cmd_get_params()
0
8705acff2494 lots of stuff
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parents:
diff changeset
264 {
2
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Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
265 uint32_t cur_watchdog_long, cur_watchdog_short, cur_newboot, cur_oneshot;
1
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parents: 0
diff changeset
266 ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
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Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
267 {
2
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parents: 1
diff changeset
268 cur_watchdog_long = watchdog_long_count;
0a6cbbb8c2b7 mostly there
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parents: 1
diff changeset
269 cur_watchdog_short = watchdog_short_count;
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
270 cur_newboot = newboot_count;
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
271 cur_oneshot = oneshot_count;
1
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parents: 0
diff changeset
272 }
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parents: 0
diff changeset
273
2
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Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
274 printf_P(PSTR("limit (count) : watchdog_long %lu (%lu) watchdog_short %lu (%lu) newboot %lu (%lu) oneshot (%lu)\n"),
1
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parents: 0
diff changeset
275 watchdog_long_limit,
2
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parents: 1
diff changeset
276 cur_watchdog_long,
1
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parents: 0
diff changeset
277 watchdog_short_limit,
2
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parents: 1
diff changeset
278 cur_watchdog_short,
1
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parents: 0
diff changeset
279 newboot_limit,
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
280 cur_newboot,
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
281 cur_oneshot);
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
282 }
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
283
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
284 static void
1
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parents: 0
diff changeset
285 cmd_set_params(const char *params)
0
8705acff2494 lots of stuff
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parents:
diff changeset
286 {
1
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parents: 0
diff changeset
287 uint32_t new_watchdog_long_limit;
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
288 uint32_t new_watchdog_short_limit;
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Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
289 uint32_t new_newboot_limit;
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parents: 0
diff changeset
290
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parents: 0
diff changeset
291 int ret = sscanf_P(params, PSTR("%lu %lu %lu"),
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
292 &new_watchdog_long_limit,
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
293 &new_watchdog_short_limit,
e23c1b6f6080 few more changes
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parents: 0
diff changeset
294 &new_newboot_limit);
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parents: 0
diff changeset
295
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parents: 0
diff changeset
296
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parents: 0
diff changeset
297 if (ret != 3)
0
8705acff2494 lots of stuff
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parents:
diff changeset
298 {
1
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parents: 0
diff changeset
299 printf_P(PSTR("Bad values\n"));
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parents: 0
diff changeset
300 }
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parents: 0
diff changeset
301 else
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parents: 0
diff changeset
302 {
e23c1b6f6080 few more changes
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parents: 0
diff changeset
303 ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
e23c1b6f6080 few more changes
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parents: 0
diff changeset
304 {
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parents: 0
diff changeset
305 eeprom_write(new_watchdog_long_limit, watchdog_long_limit);
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
306 eeprom_write(new_watchdog_short_limit, watchdog_short_limit);
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
307 eeprom_write(new_newboot_limit, newboot_limit);
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Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
308 uint16_t magic = EXPECT_MAGIC;
e23c1b6f6080 few more changes
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parents: 0
diff changeset
309 eeprom_write(magic, magic);
0
8705acff2494 lots of stuff
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parents:
diff changeset
310 }
1
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parents: 0
diff changeset
311 printf_P(PSTR("set_params for next boot\n"));
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parents: 0
diff changeset
312 printf_P(PSTR("watchdog_long %lu watchdog_short %lu newboot %lu\n"),
e23c1b6f6080 few more changes
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parents: 0
diff changeset
313 new_watchdog_long_limit,
e23c1b6f6080 few more changes
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parents: 0
diff changeset
314 new_watchdog_short_limit,
e23c1b6f6080 few more changes
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parents: 0
diff changeset
315 new_newboot_limit);
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parents: 0
diff changeset
316
e23c1b6f6080 few more changes
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parents: 0
diff changeset
317 }
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parents: 0
diff changeset
318 }
0
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parents:
diff changeset
319
1
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parents: 0
diff changeset
320 uint8_t from_hex(char c)
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parents: 0
diff changeset
321 {
e23c1b6f6080 few more changes
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parents: 0
diff changeset
322 if (c >= '0' && c <= '9') {
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parents: 0
diff changeset
323 return c-'0';
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parents: 0
diff changeset
324 }
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parents: 0
diff changeset
325 if (c >= 'a' && c <= 'f') {
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parents: 0
diff changeset
326 return c-'a' + 0xa;
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parents: 0
diff changeset
327 }
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parents: 0
diff changeset
328 if (c >= 'A' && c <= 'F') {
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parents: 0
diff changeset
329 return c-'A' + 0xa;
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parents: 0
diff changeset
330 }
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parents: 0
diff changeset
331 return 0;
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Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
332 }
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parents: 0
diff changeset
333
2
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Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
334 static void
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
335 printhex_nibble(const unsigned char b, FILE *stream)
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
336 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
337 unsigned char c = b & 0x0f;
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
338 if ( c > 9 ) {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
339 c += 'A'-10;
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
340 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
341 else {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
342 c += '0';
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
343 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
344 fputc(c, stream);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
345 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
346
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
347 void
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
348 printhex_byte(const unsigned char b, FILE *stream)
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
349 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
350 printhex_nibble( b >> 4, stream);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
351 printhex_nibble( b, stream);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
352 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
353
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
354 void
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
355 printhex(uint8_t *id, uint8_t n, FILE *stream)
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
356 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
357 for (uint8_t i = 0; i < n; i++)
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
358 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
359 if (i > 0)
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
360 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
361 fputc(' ', stream);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
362 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
363 printhex_byte(id[i], stream);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
364 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
365 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
366
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
367 static int8_t
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
368 parse_key(const char *params, uint8_t *key_index, uint8_t bytes[KEYLEN])
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
369 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
370 // "N HEXKEY"
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
371 if (strlen(params) != KEYLEN*2+2) {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
372 printf_P(PSTR("Wrong length key\n"));
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
373 return -1;
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
374 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
375
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
376 if (params[1] != ' ')
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
377 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
378 printf_P(PSTR("Missing space\n"));
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
379 return -1;
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
380 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
381
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
382 *key_index = from_hex(params[0]);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
383 if (*key_index >= NKEYS)
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
384 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
385 printf_P(PSTR("Bad key index %d, max %d\n"), *key_index, NKEYS);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
386 return -1;
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
387 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
388
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
389 for (int i = 0, p = 0; i < KEYLEN; i++, p += 2)
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
390 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
391 bytes[i] = (from_hex(params[p+2]) << 4) | from_hex(params[p+3]);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
392 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
393 return 0;
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
394 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
395
1
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
396 static void
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
397 cmd_set_avr_key(const char *params)
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
398 {
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
399 uint8_t new_key[KEYLEN];
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
400 uint8_t key_index;
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
401 if (parse_key(params, &key_index, new_key) != 0)
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
402 {
1
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
403 return;
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
404 }
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
405 memcpy(avr_keys[key_index], new_key, sizeof(new_key));
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
406 eeprom_write(avr_keys, avr_keys);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
407 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
408
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
409 static void
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
410 cmd_hmac(const char *params)
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
411 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
412 uint8_t data[KEYLEN];
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
413 uint8_t key_index;
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
414 if (parse_key(params, &key_index, data) != 0)
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
415 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
416 printf_P(PSTR("FAIL: Bad input\n"));
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
417 }
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
418
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
419 hmac_sha1_ctx_t ctx;
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
420 hmac_sha1_init(&ctx, avr_keys[key_index], KEYLEN);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
421 hmac_sha1_lastBlock(&ctx, data, KEYLEN);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
422 hmac_sha1_final(data, &ctx);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
423
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
424 printf_P(PSTR("HMAC: "));
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
425 printhex(data, KEYLEN, stdout);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
426 fputc('\n', stdout);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
427 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
428
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
429 static void
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
430 cmd_oneshot_reboot(const char *params)
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
431 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
432 uint32_t new_delay = strtoul(params, NULL, 10);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
433 ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
1
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
434 {
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
435 oneshot_count = new_delay;
1
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
436 }
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
437 printf_P(PSTR("oneshot delay %lu\n"), new_delay);
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
438 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
439
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
440 static void
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
441 load_params()
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
442 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
443 uint16_t magic;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
444 eeprom_read(magic, magic);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
445 if (magic == EXPECT_MAGIC)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
446 {
1
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
447 eeprom_read(watchdog_long_limit, watchdog_long_limit);
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
448 eeprom_read(watchdog_short_limit, watchdog_short_limit);
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
449 eeprom_read(newboot_limit, newboot_limit);
1
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
450 }
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
451
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
452 eeprom_read(avr_keys, avr_keys);
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
453 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
454
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
455 static void
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
456 cmd_vcc()
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
457 {
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
458 uint16_t vcc = adc_vcc();
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
459 printf_P("vcc: %u mV\n", vcc);
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
460 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
461
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
462 static void
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
463 read_handler()
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
464 {
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
465 if (strcmp_P(readbuf, PSTR("get_params")) == 0)
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
466 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
467 cmd_get_params();
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
468 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
469 else if (strncmp_P(readbuf, PSTR("set_params "), 11) == 0)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
470 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
471 cmd_set_params(&readbuf[11]);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
472 }
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
473 else if (strncmp_P(readbuf, PSTR("set_key "), 8) == 0)
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
474 {
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
475 cmd_set_avr_key(&readbuf[8]);
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
476 }
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
477 else if (strncmp_P(readbuf, PSTR("oneshot "), 8) == 0)
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
478 {
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
479 cmd_oneshot_reboot(&readbuf[8]);
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
480 }
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
481 else if (strncmp_P(readbuf, PSTR("hmac "), 5) == 0)
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
482 {
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
483 cmd_hmac(&readbuf[5]);
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
484 }
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
485 else if (strcmp_P(readbuf, PSTR("vcc")) == 0)
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
486 {
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
487 cmd_vcc();
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
488 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
489 else if (strcmp_P(readbuf, PSTR("reset")) == 0)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
490 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
491 cmd_reset();
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
492 }
4
fd28c7358ce8 more additions, set ports
Matt Johnston <matt@ucc.asn.au>
parents: 2
diff changeset
493 else if (strcmp_P(readbuf, PSTR("newboot")) == 0)
fd28c7358ce8 more additions, set ports
Matt Johnston <matt@ucc.asn.au>
parents: 2
diff changeset
494 {
fd28c7358ce8 more additions, set ports
Matt Johnston <matt@ucc.asn.au>
parents: 2
diff changeset
495 cmd_newboot();
fd28c7358ce8 more additions, set ports
Matt Johnston <matt@ucc.asn.au>
parents: 2
diff changeset
496 }
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
497 else
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
498 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
499 printf_P(PSTR("Bad command '%s'\n"), readbuf);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
500 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
501 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
502
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
503 ISR(INT0_vect)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
504 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
505 blink();
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
506 _delay_ms(100);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
507 blink();
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
508 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
509
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
510
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
511 ISR(USART_RX_vect)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
512 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
513 char c = UDR0;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
514 #ifdef HAVE_UART_ECHO
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
515 uart_putchar(c, NULL);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
516 #endif
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
517 if (c == '\r' || c == '\n')
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
518 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
519 if (readpos > 0)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
520 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
521 readbuf[readpos] = '\0';
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
522 have_cmd = 1;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
523 readpos = 0;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
524 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
525 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
526 else
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
527 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
528 readbuf[readpos] = c;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
529 readpos++;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
530 if (readpos >= sizeof(readbuf))
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
531 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
532 readpos = 0;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
533 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
534 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
535 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
536
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
537 ISR(TIMER1_COMPA_vect)
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
538 {
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
539 TCNT1 = 0;
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
540
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
541 clock_epoch += TICK;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
542
1
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
543 // watchdogs count up, continuous
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
544 if (watchdog_long_limit > 0) {
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
545 watchdog_long_count += TICK;
1
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
546 if (watchdog_long_count >= watchdog_long_limit)
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
547 {
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
548 watchdog_long_count = 0;
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
549 watchdog_long_hit = 1;
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
550 }
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
551 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
552
1
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
553 if (watchdog_short_limit > 0) {
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
554 watchdog_short_count += TICK;
1
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
555 if (watchdog_short_count >= watchdog_short_limit)
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
556 {
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
557 watchdog_short_count = 0;
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
558 watchdog_short_hit = 1;
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
559 }
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
560 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
561
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
562 // newboot counts down
1
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
563 if (newboot_count > 0)
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
564 {
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
565 newboot_count-=TICK;
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
566 if (newboot_count <= 0)
1
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
567 {
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
568 newboot_hit = 1;
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
569 newboot_count = 0;
1
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
570 }
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
571 }
1
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
572
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
573 if (oneshot_count > 0)
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
574 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
575 oneshot_count-=TICK;
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
576 if (oneshot_count <= 0)
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
577 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
578 oneshot_hit = 1;
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
579 oneshot_count = 0;
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
580 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
581 }
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
582 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
583
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
584 static void
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
585 idle_sleep()
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
586 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
587 set_sleep_mode(SLEEP_MODE_IDLE);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
588 sleep_mode();
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
589 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
590
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
591 static uint16_t
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
592 adc_vcc()
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
593 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
594 PRR &= ~_BV(PRADC);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
595
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
596 // /16 prescaler
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
597 ADCSRA = _BV(ADEN) | _BV(ADPS2);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
598
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
599 // set to measure 1.1 reference
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
600 ADMUX = _BV(REFS0) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
601 // average a number of samples
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
602 uint16_t sum = 0;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
603 uint8_t num = 0;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
604 for (uint8_t n = 0; n < 20; n++)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
605 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
606 ADCSRA |= _BV(ADSC);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
607 loop_until_bit_is_clear(ADCSRA, ADSC);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
608
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
609 uint8_t low_11 = ADCL;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
610 uint8_t high_11 = ADCH;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
611 uint16_t val = low_11 + (high_11 << 8);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
612
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
613 if (n >= 4)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
614 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
615 sum += val;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
616 num++;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
617 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
618 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
619 ADCSRA = 0;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
620 PRR |= _BV(PRADC);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
621
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
622 //float res_volts = 1.1 * 1024 * num / sum;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
623 //return 1000 * res_volts;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
624 return ((uint32_t)1100*1024*num) / sum;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
625 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
626
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
627 static void
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
628 reboot_pi()
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
629 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
630 // pull it low for 30ms
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
631 PORT_PI_RESET &= ~_BV(PIN_PI_RESET);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
632 DDR_PI_RESET |= _BV(PIN_PI_RESET);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
633 _delay_ms(30);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
634 DDR_PI_RESET &= ~_BV(PIN_PI_RESET);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
635 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
636
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
637 static void
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
638 set_pi_boot_normal(uint8_t normal)
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
639 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
640 PORT_PI_BOOT &= ~_BV(PIN_PI_BOOT);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
641 if (normal)
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
642 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
643 // tristate
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
644 DDR_PI_BOOT &= ~_BV(PIN_PI_BOOT);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
645 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
646 else
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
647 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
648 // pull it low
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
649 DDR_PI_RESET |= _BV(PIN_PI_BOOT);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
650
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
651 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
652 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
653
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
654 static void
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
655 check_flags()
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
656 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
657 if (watchdog_long_hit
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
658 || watchdog_short_hit
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
659 || oneshot_hit)
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
660 {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
661 reboot_pi();
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
662 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
663
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
664 if (newboot_hit) {
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
665 set_pi_boot_normal(0);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
666 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
667
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
668 watchdog_long_hit = 0;
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
669 watchdog_short_hit = 0;
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
670 newboot_hit = 0;
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
671 oneshot_hit = 0;
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
672 }
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
673
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
674 static void
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
675 do_comms()
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
676 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
677 // avoid receiving rubbish, perhaps
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
678 uart_on();
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
679
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
680 // write sd card here? same 3.3v regulator...
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
681
1
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
682 while (1)
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
683 {
1
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
684 wdt_reset();
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
685
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
686 check_flags();
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
687
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
688 if (have_cmd)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
689 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
690 have_cmd = 0;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
691 read_handler();
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
692 continue;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
693 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
694
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
695 // wait for commands from the master
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
696 idle_sleep();
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
697 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
698 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
699
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
700 static void
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
701 blink()
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
702 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
703 PORT_LED &= ~_BV(PIN_LED);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
704 _delay_ms(1);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
705 PORT_LED |= _BV(PIN_LED);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
706 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
707
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
708 static void
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
709 long_delay(int ms)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
710 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
711 int iter = ms / 100;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
712
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
713 for (int i = 0; i < iter; i++)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
714 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
715 _delay_ms(100);
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
716 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
717 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
718
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
719 ISR(BADISR_vect)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
720 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
721 //uart_on();
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
722 printf_P(PSTR("Bad interrupt\n"));
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
723 }
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
724
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
725 int main(void)
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
726 {
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
727 setup_chip();
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
728 blink();
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
729
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
730 stdout = &mystdout;
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
731 uart_on();
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
732
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
733 printf(PSTR("Started.\n"));
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
734
2
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
735 set_pi_boot_normal(0);
0a6cbbb8c2b7 mostly there
Matt Johnston <matt@ucc.asn.au>
parents: 1
diff changeset
736
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
737 load_params();
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
738
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
739 setup_tick_counter();
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
740
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
741 sei();
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
742
1
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
743 // doesn't return
e23c1b6f6080 few more changes
Matt Johnston <matt@ucc.asn.au>
parents: 0
diff changeset
744 do_comms();
0
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
745
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
746 return 0; /* never reached */
8705acff2494 lots of stuff
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
747 }