Mercurial > templog
annotate main.c @ 26:d3e5934fe55c
- Move crc16 to utils and fix it
- Fix main.c crc calculation
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Thu, 07 Jun 2012 20:26:50 +0800 |
| parents | 2943f62c8e62 |
| children | dbbd503119ba |
| rev | line source |
|---|---|
| 0 | 1 /* Name: main.c |
| 2 * Author: <insert your name here> | |
| 3 * Copyright: <insert your copyright message here> | |
| 4 * License: <insert your license reference here> | |
| 5 */ | |
| 6 | |
| 7 #include <stdio.h> | |
| 8 #include <string.h> | |
| 13 | 9 #include <stddef.h> |
| 1 | 10 #include <avr/io.h> |
| 11 #include <avr/interrupt.h> | |
| 12 #include <avr/sleep.h> | |
| 7 | 13 #include <util/delay.h> |
| 6 | 14 #include <avr/pgmspace.h> |
| 13 | 15 #include <avr/eeprom.h> |
| 0 | 16 #include <util/crc16.h> |
| 17 | |
| 12 | 18 // for DWORD of get_fattime() |
| 3 | 19 #include "integer.h" |
| 12 | 20 |
| 21 #include "simple_ds18b20.h" | |
| 13 | 22 #include "onewire.h" |
| 3 | 23 |
| 0 | 24 // configuration params |
| 25 // - measurement interval | |
| 26 // - transmit interval | |
| 27 // - bluetooth params | |
| 28 // - number of sensors (and range?) | |
| 29 | |
| 1 | 30 // 1 second. we have 1024 prescaler, 32768 crystal. |
| 2 | 31 #define SLEEP_COMPARE 32 |
| 14 | 32 #define MEASURE_WAKE 10 |
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33 |
| 13 | 34 #define VALUE_NOSENSOR -9000 |
| 35 #define VALUE_BROKEN -8000 | |
| 36 | |
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37 // limited to uint16_t for now |
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38 #define COMMS_WAKE 3600 |
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39 #define WAKE_SECS 250 // XXX testing |
| 2 | 40 |
| 10 | 41 #define BAUD 19200 |
| 7 | 42 #define UBRR ((F_CPU)/8/(BAUD)-1) |
| 43 | |
| 44 #define PORT_LED PORTC | |
| 45 #define DDR_LED DDRC | |
| 46 #define PIN_LED PC4 | |
| 1 | 47 |
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48 #define PORT_SHDN PORTD |
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49 #define DDR_SHDN DDRD |
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50 #define PIN_SHDN PD7 |
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51 |
| 13 | 52 #define NUM_MEASUREMENTS 100 |
| 53 #define MAX_SENSORS 5 | |
| 6 | 54 |
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55 // fixed at 8, have a shorter name |
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56 #define ID_LEN OW_ROMCODE_SIZE |
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57 |
| 10 | 58 int uart_putchar(char c, FILE *stream); |
| 14 | 59 static void long_delay(int ms); |
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60 static void blink(); |
| 14 | 61 |
| 0 | 62 static FILE mystdout = FDEV_SETUP_STREAM(uart_putchar, NULL, |
| 63 _FDEV_SETUP_WRITE); | |
| 64 | |
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65 uint16_t crc_out; |
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66 static FILE _crc_stdout = FDEV_SETUP_STREAM(uart_putchar, NULL, |
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67 _FDEV_SETUP_WRITE); |
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68 // convenience |
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69 static FILE *crc_stdout = &_crc_stdout; |
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70 |
| 17 | 71 static uint16_t n_measurements; |
| 13 | 72 // stored as decidegrees |
| 14 | 73 static int16_t measurements[NUM_MEASUREMENTS][MAX_SENSORS]; |
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74 static uint32_t first_measurement_clock; |
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75 // last_measurement_clock is redundant but checks that we're not missing |
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76 // samples |
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77 static uint32_t last_measurement_clock; |
| 0 | 78 |
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79 // boolean flags |
| 17 | 80 static uint8_t need_measurement; |
| 81 static uint8_t need_comms; | |
| 1 | 82 |
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83 // counts down from WAKE_SECS to 0, goes to deep sleep when hits 0 |
| 17 | 84 static uint8_t comms_timeout; |
| 1 | 85 |
| 17 | 86 static uint8_t readpos; |
| 0 | 87 static char readbuf[30]; |
| 88 | |
| 17 | 89 static uint8_t measure_count; |
| 90 static uint16_t comms_count; | |
| 91 | |
| 92 static uint32_t clock_epoch; | |
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93 |
| 13 | 94 // thanks to http://projectgus.com/2010/07/eeprom-access-with-arduino/ |
| 95 #define eeprom_read_to(dst_p, eeprom_field, dst_size) eeprom_read_block((dst_p), (void *)offsetof(struct __eeprom_data, eeprom_field), (dst_size)) | |
| 96 #define eeprom_read(dst, eeprom_field) eeprom_read_to((&dst), eeprom_field, sizeof(dst)) | |
| 97 #define eeprom_write_from(src_p, eeprom_field, src_size) eeprom_write_block((src_p), (void *)offsetof(struct __eeprom_data, eeprom_field), (src_size)) | |
| 98 #define eeprom_write(src, eeprom_field) { eeprom_write_from(&src, eeprom_field, sizeof(src)); } | |
| 99 | |
| 100 #define EXPECT_MAGIC 0x67c9 | |
| 101 | |
| 102 struct __attribute__ ((__packed__)) __eeprom_data { | |
| 103 uint16_t magic; | |
| 104 uint8_t n_sensors; | |
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105 uint8_t sensor_id[MAX_SENSORS][ID_LEN]; |
| 13 | 106 }; |
| 107 | |
| 8 | 108 #define DEBUG(str) printf_P(PSTR(str)) |
| 109 | |
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110 static void deep_sleep(); |
| 1 | 111 |
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112 // Very first setup |
| 18 | 113 static void |
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114 setup_chip() |
| 18 | 115 { |
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116 // Set clock to 2mhz |
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117 cli(); |
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118 CLKPR = _BV(CLKPCE); |
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119 // divide by 4 |
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120 CLKPR = _BV(CLKPS1); |
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121 sei(); |
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122 |
| 19 | 123 // 3.3v power for bluetooth and SD |
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124 DDR_LED |= _BV(PIN_LED); |
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125 DDR_SHDN |= _BV(PIN_SHDN); |
| 19 | 126 |
| 18 | 127 // INT0 setup |
| 128 EIMSK = _BV(INT0); | |
| 129 // set pullup | |
| 130 PORTD |= _BV(PD2); | |
| 131 } | |
| 132 | |
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133 static void |
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134 set_aux_power(uint8_t on) |
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135 { |
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136 if (on) |
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137 { |
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138 PORT_SHDN &= ~_BV(PIN_SHDN); |
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139 } |
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140 else |
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141 { |
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142 //PORT_SHDN |= _BV(PIN_SHDN); |
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143 } |
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144 } |
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145 |
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146 static void |
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147 setup_tick_counter() |
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148 { |
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149 // set up counter2. |
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150 // COM21 COM20 Set OC2 on Compare Match (p116) |
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151 // WGM21 Clear counter on compare |
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152 //TCCR2A = _BV(COM2A1) | _BV(COM2A0) | _BV(WGM21); |
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153 // toggle on match |
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154 TCCR2A = _BV(COM2A0); |
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155 // CS22 CS21 CS20 clk/1024 |
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156 TCCR2B = _BV(CS22) | _BV(CS21) | _BV(CS20); |
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157 // set async mode |
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158 ASSR |= _BV(AS2); |
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159 TCNT2 = 0; |
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160 OCR2A = SLEEP_COMPARE; |
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161 // interrupt |
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162 TIMSK2 = _BV(OCIE2A); |
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163 } |
| 18 | 164 |
| 0 | 165 static void |
| 7 | 166 uart_on() |
| 0 | 167 { |
| 8 | 168 // Power reduction register |
| 169 //PRR &= ~_BV(PRUSART0); | |
| 170 | |
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171 // All of this needs to be done each time after turning off the PRR |
| 0 | 172 // baud rate |
| 7 | 173 UBRR0H = (unsigned char)(UBRR >> 8); |
| 174 UBRR0L = (unsigned char)UBRR; | |
| 175 // set 2x clock, improves accuracy of UBRR | |
| 176 UCSR0A |= _BV(U2X0); | |
| 6 | 177 UCSR0B = _BV(RXCIE0) | _BV(RXEN0) | _BV(TXEN0); |
| 0 | 178 //8N1 |
| 7 | 179 UCSR0C = _BV(UCSZ01) | _BV(UCSZ00); |
| 6 | 180 } |
| 181 | |
| 182 static void | |
| 183 uart_off() | |
| 184 { | |
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185 #if 0 |
| 6 | 186 // Turn of interrupts and disable tx/rx |
| 187 UCSR0B = 0; | |
| 188 | |
| 189 // Power reduction register | |
| 8 | 190 //PRR |= _BV(PRUSART0); |
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191 #endif |
| 0 | 192 } |
| 193 | |
| 10 | 194 int |
| 0 | 195 uart_putchar(char c, FILE *stream) |
| 196 { | |
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197 // XXX could perhaps sleep in the loop for power. |
| 8 | 198 if (c == '\n') |
| 199 { | |
| 10 | 200 loop_until_bit_is_set(UCSR0A, UDRE0); |
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201 UDR0 = '\r'; |
| 8 | 202 } |
| 2 | 203 loop_until_bit_is_set(UCSR0A, UDRE0); |
| 204 UDR0 = c; | |
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205 if (stream == crc_stdout) |
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206 { |
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207 crc_out = _crc_ccitt_update(crc_out, c); |
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208 } |
| 10 | 209 if (c == '\r') |
| 210 { | |
| 211 loop_until_bit_is_set(UCSR0A, UDRE0); | |
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212 UDR0 = '\n'; |
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213 if (stream == crc_stdout) |
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214 { |
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215 crc_out = _crc_ccitt_update(crc_out, '\n'); |
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216 } |
| 10 | 217 } |
| 0 | 218 return 0; |
| 219 } | |
| 220 | |
| 221 static void | |
| 222 cmd_fetch() | |
| 223 { | |
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224 crc_out = 0; |
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225 uint8_t n_sensors; |
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226 eeprom_read(n_sensors, n_sensors); |
| 13 | 227 |
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228 fprintf_P(crc_stdout, PSTR("START\n")); |
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229 fprintf_P(crc_stdout, PSTR("now=%lu\n"), clock_epoch); |
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230 fprintf_P(crc_stdout, PSTR("first_time=%lu\n"), first_measurement_clock); |
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231 fprintf_P(crc_stdout, PSTR("last_time=%lu\n"), last_measurement_clock); |
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232 fprintf_P(crc_stdout, PSTR("sensors=%d\n"), n_measurements); |
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233 for (uint8_t s = 0; s < n_sensors; s++) |
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234 { |
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235 uint8_t id[ID_LEN]; |
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236 fprintf_P(crc_stdout, PSTR("sensor_id%d="), s); |
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237 eeprom_read_to(id, sensor_id[s], ID_LEN); |
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238 printhex(id, ID_LEN, crc_stdout); |
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239 fputc('\n', crc_stdout); |
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240 } |
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241 fprintf_P(crc_stdout, PSTR("measurements=%d\n"), n_measurements); |
| 14 | 242 for (uint16_t n = 0; n < n_measurements; n++) |
| 0 | 243 { |
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244 fprintf_P(crc_stdout, PSTR("meas%3d="), n); |
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245 for (uint8_t s = 0; s < n_sensors; s++) |
| 13 | 246 { |
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247 fprintf_P(crc_stdout, PSTR(" %6d"), measurements[n][s]); |
| 13 | 248 } |
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249 fputc('\n', crc_stdout); |
| 0 | 250 } |
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251 fprintf_P(crc_stdout, PSTR("END\n")); |
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252 fprintf_P(stdout, PSTR("CRC=%hu\n"), crc_out); |
| 0 | 253 } |
| 254 | |
| 255 static void | |
| 256 cmd_clear() | |
| 257 { | |
| 7 | 258 n_measurements = 0; |
| 259 printf_P(PSTR("Cleared\n")); | |
| 0 | 260 } |
| 261 | |
| 262 static void | |
| 263 cmd_btoff() | |
| 264 { | |
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265 uint16_t next_wake = COMMS_WAKE - comms_count; |
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266 printf_P(PSTR("off:%d\n"), next_wake); |
| 7 | 267 _delay_ms(50); |
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268 comms_timeout = 0; |
| 0 | 269 } |
| 270 | |
| 271 static void | |
| 12 | 272 cmd_measure() |
| 273 { | |
| 274 printf_P(PSTR("Measuring\n")); | |
| 275 need_measurement = 1; | |
| 276 } | |
| 277 | |
| 278 static void | |
| 279 cmd_sensors() | |
| 280 { | |
| 281 uint8_t ret = simple_ds18b20_start_meas(NULL); | |
| 14 | 282 printf_P(PSTR("All sensors, ret %d, waiting...\n"), ret); |
| 283 long_delay(DS18B20_TCONV_12BIT); | |
| 12 | 284 simple_ds18b20_read_all(); |
| 285 } | |
| 286 | |
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287 #if 0 |
| 13 | 288 // 0 on success |
| 289 static uint8_t | |
| 290 get_hex_string(const char *hex, uint8_t *out, uint8_t size) | |
| 291 { | |
| 292 uint8_t upper; | |
| 293 uint8_t o; | |
| 294 for (uint8_t i = 0, z = 0; o < size; i++) | |
| 295 { | |
| 296 uint8_t h = hex[i]; | |
| 297 if (h >= 'A' && h <= 'F') | |
| 298 { | |
| 299 // lower case | |
| 300 h += 0x20; | |
| 301 } | |
| 302 uint8_t nibble; | |
| 303 if (h >= '0' && h <= '9') | |
| 304 { | |
| 305 nibble = h - '0'; | |
| 306 } | |
| 307 else if (h >= 'a' && h <= 'f') | |
| 308 { | |
| 309 nibble = 10 + h - 'a'; | |
| 310 } | |
| 311 else if (h == ' ' || h == ':') | |
| 312 { | |
| 313 continue; | |
| 314 } | |
| 315 else | |
| 316 { | |
| 317 printf_P(PSTR("Bad hex 0x%x '%c'\n"), hex[i], hex[i]); | |
| 318 return 1; | |
| 319 } | |
| 320 | |
| 321 if (z % 2 == 0) | |
| 322 { | |
| 323 upper = nibble << 4; | |
| 324 } | |
| 325 else | |
| 326 { | |
| 327 out[o] = upper | nibble; | |
| 328 o++; | |
| 329 } | |
| 330 | |
| 331 z++; | |
| 332 } | |
| 333 | |
| 334 if (o != size) | |
| 335 { | |
| 336 printf_P(PSTR("Short hex\n")); | |
| 337 return 1; | |
| 338 } | |
| 339 return 0; | |
| 340 } | |
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341 #endif |
| 13 | 342 |
| 343 static void | |
| 344 add_sensor(uint8_t *id) | |
| 345 { | |
| 346 uint8_t n; | |
| 347 eeprom_read(n, n_sensors); | |
| 348 if (n < MAX_SENSORS) | |
| 349 { | |
| 350 cli(); | |
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351 eeprom_write_from(id, sensor_id[n], ID_LEN); |
| 13 | 352 n++; |
| 353 eeprom_write(n, n_sensors); | |
| 354 sei(); | |
| 355 printf_P(PSTR("Added sensor %d : "), n); | |
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356 printhex(id, ID_LEN, stdout); |
| 13 | 357 putchar('\n'); |
| 358 } | |
| 359 else | |
| 360 { | |
| 361 printf_P(PSTR("Too many sensors\n")); | |
| 362 } | |
| 363 } | |
| 364 | |
| 365 static void | |
| 366 cmd_add_all() | |
| 367 { | |
| 368 uint8_t id[OW_ROMCODE_SIZE]; | |
| 369 printf_P("Adding all\n"); | |
| 370 ow_reset(); | |
| 371 for( uint8_t diff = OW_SEARCH_FIRST; diff != OW_LAST_DEVICE; ) | |
| 372 { | |
| 373 diff = ow_rom_search( diff, &id[0] ); | |
| 374 if( diff == OW_PRESENCE_ERR ) { | |
| 375 printf_P( PSTR("No Sensor found\r") ); | |
| 376 return; | |
| 377 } | |
| 378 | |
| 379 if( diff == OW_DATA_ERR ) { | |
| 380 printf_P( PSTR("Bus Error\r") ); | |
| 381 return; | |
| 382 } | |
| 383 add_sensor(id); | |
| 384 } | |
| 385 } | |
| 386 | |
| 387 static void | |
| 388 cmd_init() | |
| 389 { | |
| 390 printf_P(PSTR("Resetting sensor list\n")); | |
| 391 uint8_t zero = 0; | |
| 392 cli(); | |
| 393 eeprom_write(zero, n_sensors); | |
| 394 sei(); | |
| 395 printf_P(PSTR("Done.\n")); | |
| 396 } | |
| 397 | |
| 398 static void | |
| 17 | 399 cmd_settime(const char *str) |
| 400 { | |
| 401 clock_epoch = strtoul(str, NULL, 10); | |
| 402 printf_P(PSTR("Time set to %lu\n"), clock_epoch); | |
| 403 } | |
| 404 | |
| 405 static void | |
| 13 | 406 check_first_startup() |
| 407 { | |
| 408 uint16_t magic; | |
| 409 eeprom_read(magic, magic); | |
| 410 if (magic != EXPECT_MAGIC) | |
| 411 { | |
| 412 printf_P(PSTR("First boot, looking for sensors...\n")); | |
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413 // in case of power fumbles don't want to reset during eeprom write, |
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414 long_delay(2); |
| 13 | 415 cmd_init(); |
| 416 cmd_add_all(); | |
| 14 | 417 cli(); |
| 418 magic = EXPECT_MAGIC; | |
| 419 eeprom_write(magic, magic); | |
| 420 sei(); | |
| 13 | 421 } |
| 422 } | |
| 423 | |
| 12 | 424 static void |
| 0 | 425 read_handler() |
| 426 { | |
| 6 | 427 if (strcmp_P(readbuf, PSTR("fetch")) == 0) |
| 0 | 428 { |
| 429 cmd_fetch(); | |
| 430 } | |
| 6 | 431 else if (strcmp_P(readbuf, PSTR("clear")) == 0) |
| 0 | 432 { |
| 433 cmd_clear(); | |
| 434 } | |
| 6 | 435 else if (strcmp_P(readbuf, PSTR("btoff")) == 0) |
| 0 | 436 { |
| 437 cmd_btoff(); | |
| 438 } | |
| 12 | 439 else if (strcmp_P(readbuf, PSTR("measure")) == 0) |
| 440 { | |
| 441 cmd_measure(); | |
| 442 } | |
| 443 else if (strcmp_P(readbuf, PSTR("sensors")) == 0) | |
| 444 { | |
| 445 cmd_sensors(); | |
| 446 } | |
| 13 | 447 else if (strcmp_P(readbuf, PSTR("addall"))== 0) |
| 448 { | |
| 449 cmd_add_all(); | |
| 450 } | |
| 17 | 451 else if (strncmp_P(readbuf, PSTR("settime "), |
| 452 strlen("settime ") == 0)) | |
| 453 { | |
| 454 cmd_settime(&readbuf[strlen("settime ")]); | |
| 455 } | |
| 13 | 456 else if (strcmp_P(readbuf, PSTR("init")) == 0) |
| 457 { | |
| 458 cmd_init(); | |
| 459 } | |
| 0 | 460 else |
| 461 { | |
| 6 | 462 printf_P(PSTR("Bad command\n")); |
| 0 | 463 } |
| 464 } | |
| 465 | |
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466 ISR(INT0_vect) |
| 18 | 467 { |
| 468 need_comms = 1; | |
|
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469 blink(); |
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470 _delay_ms(100); |
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471 blink(); |
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472 _delay_ms(100); |
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473 blink(); |
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474 _delay_ms(100); |
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475 blink(); |
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476 _delay_ms(100); |
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477 blink(); |
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478 _delay_ms(100); |
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479 blink(); |
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480 _delay_ms(100); |
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481 blink(); |
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482 _delay_ms(100); |
| 18 | 483 } |
| 484 | |
| 485 | |
| 2 | 486 ISR(USART_RX_vect) |
| 0 | 487 { |
| 2 | 488 char c = UDR0; |
| 12 | 489 uart_putchar(c, NULL); |
|
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490 // XXX move this out of interrupt handler |
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491 if (c == '\r' || c == '\n') |
| 0 | 492 { |
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493 if (readpos > 0) |
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494 { |
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495 readbuf[readpos] = '\0'; |
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496 read_handler(); |
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497 readpos = 0; |
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498 } |
| 0 | 499 } |
| 500 else | |
| 501 { | |
| 502 readbuf[readpos] = c; | |
| 503 readpos++; | |
| 504 if (readpos >= sizeof(readbuf)) | |
| 505 { | |
| 506 readpos = 0; | |
| 507 } | |
| 508 } | |
| 509 } | |
| 510 | |
| 2 | 511 ISR(TIMER2_COMPA_vect) |
| 1 | 512 { |
| 14 | 513 TCNT2 = 0; |
|
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514 measure_count ++; |
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515 comms_count ++; |
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516 |
| 17 | 517 clock_epoch ++; |
| 518 | |
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519 if (comms_timeout != 0) |
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520 { |
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521 comms_timeout--; |
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522 } |
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523 |
| 14 | 524 if (measure_count >= MEASURE_WAKE) |
| 1 | 525 { |
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526 measure_count = 0; |
| 1 | 527 need_measurement = 1; |
| 528 } | |
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529 |
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530 if (comms_count >= COMMS_WAKE) |
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531 { |
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532 comms_count = 0; |
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533 need_comms = 1; |
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534 } |
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535 |
| 1 | 536 } |
| 537 | |
| 3 | 538 DWORD get_fattime (void) |
| 539 { | |
| 540 return 0; | |
| 541 } | |
| 542 | |
| 1 | 543 static void |
| 544 deep_sleep() | |
| 545 { | |
| 546 // p119 of manual | |
| 2 | 547 OCR2A = SLEEP_COMPARE; |
| 548 loop_until_bit_is_clear(ASSR, OCR2AUB); | |
| 1 | 549 |
| 550 set_sleep_mode(SLEEP_MODE_PWR_SAVE); | |
| 551 sleep_mode(); | |
| 552 } | |
| 553 | |
| 554 static void | |
|
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555 idle_sleep() |
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556 { |
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557 set_sleep_mode(SLEEP_MODE_IDLE); |
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558 sleep_mode(); |
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559 } |
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560 |
| 14 | 561 #if 0 |
| 562 // untested | |
| 6 | 563 static void |
| 564 do_adc_335() | |
| 565 { | |
| 8 | 566 //PRR &= ~_BV(PRADC); |
| 6 | 567 |
| 568 ADMUX = _BV(ADLAR); | |
| 569 | |
| 570 // ADPS2 = /16 prescaler, 62khz at 1mhz clock | |
| 571 ADCSRA = _BV(ADEN) | _BV(ADPS2); | |
| 572 | |
| 573 // measure value | |
| 574 ADCSRA |= _BV(ADSC); | |
| 575 loop_until_bit_is_clear(ADCSRA, ADSC); | |
| 576 uint8_t low = ADCL; | |
| 577 uint8_t high = ADCH; | |
| 578 uint16_t f_measure = low + (high << 8); | |
| 579 | |
| 580 // set to measure 1.1 reference | |
| 581 ADMUX = _BV(ADLAR) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1); | |
| 582 ADCSRA |= _BV(ADSC); | |
| 583 loop_until_bit_is_clear(ADCSRA, ADSC); | |
| 584 uint8_t low_11 = ADCL; | |
| 585 uint8_t high_11 = ADCH; | |
| 586 uint16_t f_11 = low_11 + (high_11 << 8); | |
| 587 | |
| 588 float res_volts = 1.1 * f_measure / f_11; | |
| 589 | |
| 590 // 10mV/degree | |
| 591 // scale to 1/5 degree units above 0C | |
| 592 int temp = (res_volts - 2.73) * 500; | |
| 13 | 593 // XXX fixme |
| 594 //measurements[n_measurements] = temp; | |
| 6 | 595 // XXX something if it hits the limit |
| 596 | |
| 597 // measure AVR internal temperature against 1.1 ref. | |
| 598 ADMUX = _BV(ADLAR) | _BV(MUX3) | _BV(REFS1) | _BV(REFS0); | |
| 599 ADCSRA |= _BV(ADSC); | |
| 600 loop_until_bit_is_clear(ADCSRA, ADSC); | |
| 601 uint16_t res_internal = ADCL; | |
| 602 res_internal |= ADCH << 8; | |
| 603 | |
| 604 float internal_volts = res_internal * (1.1 / 1024.0); | |
| 605 | |
| 606 // 1mV/degree | |
| 607 int internal_temp = (internal_volts - 2.73) * 5000; | |
| 13 | 608 // XXX fixme |
| 609 //internal_measurements[n_measurements] = internal_temp; | |
| 6 | 610 |
| 611 printf_P("measure %d: external %d, internal %d, 1.1 %d\n", | |
| 612 n_measurements, temp, internal_temp, f_11); | |
| 613 | |
| 614 n_measurements++; | |
| 8 | 615 //PRR |= _BV(PRADC); |
| 6 | 616 } |
| 14 | 617 #endif |
| 6 | 618 |
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619 static void |
| 1 | 620 do_measurement() |
| 621 { | |
| 13 | 622 uint8_t n_sensors; |
| 14 | 623 printf("do_measurement\n"); |
| 13 | 624 eeprom_read(n_sensors, n_sensors); |
| 14 | 625 printf("do_measurement sensors %d\n", n_sensors); |
| 13 | 626 |
| 627 uint8_t ret = simple_ds18b20_start_meas(NULL); | |
| 14 | 628 printf_P(PSTR("Read all sensors, ret %d, waiting...\n"), ret); |
| 13 | 629 _delay_ms(DS18B20_TCONV_12BIT); |
| 630 | |
| 631 if (n_measurements == NUM_MEASUREMENTS) | |
| 632 { | |
| 14 | 633 printf_P(PSTR("Measurements .overflow\n")); |
| 13 | 634 n_measurements = 0; |
| 635 } | |
| 6 | 636 |
| 14 | 637 for (uint8_t s = 0; s < MAX_SENSORS; s++) |
| 13 | 638 { |
| 639 int16_t decicelsius; | |
| 14 | 640 if (s >= n_sensors) |
| 13 | 641 { |
| 642 decicelsius = VALUE_NOSENSOR; | |
| 643 } | |
| 644 else | |
| 645 { | |
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646 uint8_t id[ID_LEN]; |
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647 eeprom_read_to(id, sensor_id[s], ID_LEN); |
| 13 | 648 |
| 649 uint8_t ret = simple_ds18b20_read_decicelsius(id, &decicelsius); | |
| 650 if (ret != DS18X20_OK) | |
| 651 { | |
| 652 decicelsius = VALUE_BROKEN; | |
| 653 } | |
| 654 } | |
| 14 | 655 measurements[n_measurements][s] = decicelsius; |
| 13 | 656 } |
|
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657 |
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658 if (n_measurements == 0) |
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659 { |
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660 first_measurement_clock = clock_epoch; |
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661 } |
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662 last_measurement_clock = clock_epoch; |
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663 |
| 14 | 664 n_measurements++; |
| 12 | 665 //do_adc_335(); |
| 1 | 666 } |
| 667 | |
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668 static void |
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669 do_comms() |
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670 { |
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671 // turn on bluetooth |
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672 set_aux_power(1); |
| 7 | 673 uart_on(); |
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674 |
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675 // write sd card here? same 3.3v regulator... |
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676 |
| 12 | 677 printf("ready> \n"); |
| 678 | |
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679 for (comms_timeout = WAKE_SECS; comms_timeout > 0; ) |
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680 { |
| 6 | 681 if (need_measurement) |
| 682 { | |
| 14 | 683 need_measurement = 0; |
| 684 printf("measure from do_comms\n"); | |
| 6 | 685 do_measurement(); |
| 686 } | |
| 687 | |
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688 // wait for commands from the master |
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689 idle_sleep(); |
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690 } |
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691 |
| 6 | 692 uart_off(); |
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693 set_aux_power(0); |
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694 } |
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695 |
| 7 | 696 static void |
| 697 blink() | |
| 698 { | |
| 699 PORT_LED &= ~_BV(PIN_LED); | |
| 9 | 700 _delay_ms(1); |
| 7 | 701 PORT_LED |= _BV(PIN_LED); |
| 702 } | |
| 703 | |
| 704 static void | |
| 705 long_delay(int ms) | |
| 706 { | |
| 707 int iter = ms / 100; | |
| 708 | |
| 709 for (int i = 0; i < iter; i++) | |
| 710 { | |
| 711 _delay_ms(100); | |
| 712 } | |
| 713 } | |
| 714 | |
| 8 | 715 ISR(BADISR_vect) |
| 716 { | |
| 14 | 717 //uart_on(); |
| 8 | 718 printf_P(PSTR("Bad interrupt\n")); |
| 719 } | |
| 720 | |
| 9 | 721 |
| 0 | 722 int main(void) |
| 723 { | |
|
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724 setup_chip(); |
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725 blink(); |
| 9 | 726 |
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727 set_aux_power(0); |
| 7 | 728 |
| 6 | 729 stdout = &mystdout; |
| 7 | 730 uart_on(); |
| 731 | |
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732 printf(PSTR("Started.\n")); |
| 13 | 733 |
| 734 check_first_startup(); | |
| 735 | |
| 8 | 736 uart_off(); |
| 0 | 737 |
| 6 | 738 // turn off everything except timer2 |
| 8 | 739 //PRR = _BV(PRTWI) | _BV(PRTIM0) | _BV(PRTIM1) | _BV(PRSPI) | _BV(PRUSART0) | _BV(PRADC); |
| 740 | |
| 741 // for testing | |
| 742 uart_on(); | |
| 743 | |
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744 setup_tick_counter(); |
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745 |
| 12 | 746 sei(); |
| 8 | 747 |
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748 need_comms = 1; |
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749 |
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750 #if 0 |
| 6 | 751 for (;;) |
| 752 { | |
| 12 | 753 do_comms(); |
| 6 | 754 } |
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755 #endif |
| 12 | 756 |
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757 for(;;) |
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758 { |
| 1 | 759 if (need_measurement) |
| 760 { | |
| 14 | 761 need_measurement = 0; |
| 1 | 762 do_measurement(); |
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763 continue; |
| 1 | 764 } |
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765 |
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766 if (need_comms) |
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767 { |
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768 need_comms = 0; |
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769 do_comms(); |
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770 continue; |
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771 } |
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772 |
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773 deep_sleep(); |
| 9 | 774 blink(); |
| 10 | 775 printf("."); |
| 0 | 776 } |
| 12 | 777 |
| 0 | 778 return 0; /* never reached */ |
| 779 } |