Mercurial > templog
annotate main.c @ 16:5075d8c428bd
untested, add comms timeout code
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Mon, 21 May 2012 07:52:51 +0800 |
| parents | 54b0fda9cba7 |
| children | a5e3b363675d |
| 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 #define COMMS_WAKE 3600 |
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38 #define WAKE_SECS 30 |
| 2 | 39 |
| 10 | 40 #define BAUD 19200 |
| 7 | 41 #define UBRR ((F_CPU)/8/(BAUD)-1) |
| 42 | |
| 43 #define PORT_LED PORTC | |
| 44 #define DDR_LED DDRC | |
| 45 #define PIN_LED PC4 | |
| 1 | 46 |
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47 #define PORT_SHDN PORTD |
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48 #define DDR_SHDN DDRD |
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49 #define PIN_SHDN PD7 |
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50 |
| 13 | 51 #define NUM_MEASUREMENTS 100 |
| 52 #define MAX_SENSORS 5 | |
| 6 | 53 |
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54 // fixed at 8, have a shorter name |
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55 #define ID_LEN OW_ROMCODE_SIZE |
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56 |
| 10 | 57 int uart_putchar(char c, FILE *stream); |
| 14 | 58 static void long_delay(int ms); |
| 59 | |
| 0 | 60 static FILE mystdout = FDEV_SETUP_STREAM(uart_putchar, NULL, |
| 61 _FDEV_SETUP_WRITE); | |
| 62 | |
| 13 | 63 static uint16_t n_measurements = 0; |
| 64 // stored as decidegrees | |
| 14 | 65 static int16_t measurements[NUM_MEASUREMENTS][MAX_SENSORS]; |
| 0 | 66 |
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67 // boolean flags |
| 7 | 68 static uint8_t need_measurement = 0; |
| 69 static uint8_t need_comms = 0; | |
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70 |
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71 // counts down from WAKE_SECS to 0, goes to deep sleep when hits 0 |
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72 static uint8_t comms_timeout = 0; |
| 1 | 73 |
| 7 | 74 static uint8_t readpos = 0; |
| 0 | 75 static char readbuf[30]; |
| 76 | |
| 7 | 77 static uint8_t measure_count = 0; |
| 78 static uint16_t comms_count = 0; | |
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79 |
| 13 | 80 // thanks to http://projectgus.com/2010/07/eeprom-access-with-arduino/ |
| 81 #define eeprom_read_to(dst_p, eeprom_field, dst_size) eeprom_read_block((dst_p), (void *)offsetof(struct __eeprom_data, eeprom_field), (dst_size)) | |
| 82 #define eeprom_read(dst, eeprom_field) eeprom_read_to((&dst), eeprom_field, sizeof(dst)) | |
| 83 #define eeprom_write_from(src_p, eeprom_field, src_size) eeprom_write_block((src_p), (void *)offsetof(struct __eeprom_data, eeprom_field), (src_size)) | |
| 84 #define eeprom_write(src, eeprom_field) { eeprom_write_from(&src, eeprom_field, sizeof(src)); } | |
| 85 | |
| 86 #define EXPECT_MAGIC 0x67c9 | |
| 87 | |
| 88 struct __attribute__ ((__packed__)) __eeprom_data { | |
| 89 uint16_t magic; | |
| 90 uint8_t n_sensors; | |
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91 uint8_t sensor_id[MAX_SENSORS][ID_LEN]; |
| 13 | 92 }; |
| 93 | |
| 8 | 94 #define DEBUG(str) printf_P(PSTR(str)) |
| 95 | |
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96 static void deep_sleep(); |
| 1 | 97 |
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98 // Very first setup |
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99 static void |
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100 setup_chip() |
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101 { |
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102 // Set clock to 2mhz |
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103 cli(); |
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104 CLKPR = _BV(CLKPCE); |
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105 // divide by 4 |
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106 CLKPR = _BV(CLKPS1); |
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107 sei(); |
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108 |
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109 DDR_LED |= _BV(PIN_LED); |
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110 DDR_SHDN |= _BV(PIN_SHDN); |
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111 } |
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112 |
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113 static void |
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114 set_aux_power(uint8_t on) |
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115 { |
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116 if (on) |
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117 { |
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118 PORT_SHDN &= ~_BV(PIN_SHDN); |
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119 } |
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120 else |
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121 { |
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122 PORT_SHDN |= _BV(PIN_SHDN); |
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123 } |
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124 } |
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125 |
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126 static void |
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127 setup_tick_counter() |
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128 { |
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129 // set up counter2. |
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130 // COM21 COM20 Set OC2 on Compare Match (p116) |
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131 // WGM21 Clear counter on compare |
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132 //TCCR2A = _BV(COM2A1) | _BV(COM2A0) | _BV(WGM21); |
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133 // toggle on match |
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134 TCCR2A = _BV(COM2A0); |
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135 // CS22 CS21 CS20 clk/1024 |
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136 TCCR2B = _BV(CS22) | _BV(CS21) | _BV(CS20); |
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137 // set async mode |
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138 ASSR |= _BV(AS2); |
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139 TCNT2 = 0; |
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140 OCR2A = SLEEP_COMPARE; |
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141 // interrupt |
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142 TIMSK2 = _BV(OCIE2A); |
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143 } |
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144 |
| 0 | 145 static void |
| 7 | 146 uart_on() |
| 0 | 147 { |
| 8 | 148 // Power reduction register |
| 149 //PRR &= ~_BV(PRUSART0); | |
| 150 | |
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151 // All of this needs to be done each time after turning off the PRR |
| 0 | 152 // baud rate |
| 7 | 153 UBRR0H = (unsigned char)(UBRR >> 8); |
| 154 UBRR0L = (unsigned char)UBRR; | |
| 155 // set 2x clock, improves accuracy of UBRR | |
| 156 UCSR0A |= _BV(U2X0); | |
| 6 | 157 UCSR0B = _BV(RXCIE0) | _BV(RXEN0) | _BV(TXEN0); |
| 0 | 158 //8N1 |
| 7 | 159 UCSR0C = _BV(UCSZ01) | _BV(UCSZ00); |
| 6 | 160 } |
| 161 | |
| 162 static void | |
| 163 uart_off() | |
| 164 { | |
| 165 // Turn of interrupts and disable tx/rx | |
| 166 UCSR0B = 0; | |
| 167 | |
| 168 // Power reduction register | |
| 8 | 169 //PRR |= _BV(PRUSART0); |
| 0 | 170 } |
| 171 | |
| 10 | 172 int |
| 0 | 173 uart_putchar(char c, FILE *stream) |
| 174 { | |
| 10 | 175 // XXX should sleep in the loop for power. |
| 8 | 176 if (c == '\n') |
| 177 { | |
| 10 | 178 loop_until_bit_is_set(UCSR0A, UDRE0); |
| 179 UDR0 = '\r';; | |
| 8 | 180 } |
| 2 | 181 loop_until_bit_is_set(UCSR0A, UDRE0); |
| 182 UDR0 = c; | |
| 10 | 183 if (c == '\r') |
| 184 { | |
| 185 loop_until_bit_is_set(UCSR0A, UDRE0); | |
| 186 UDR0 = '\n';; | |
| 187 } | |
| 0 | 188 return 0; |
| 189 } | |
| 190 | |
| 191 static void | |
| 192 cmd_fetch() | |
| 193 { | |
| 194 uint16_t crc = 0; | |
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195 uint8_t n_sensors; |
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196 eeprom_read(n_sensors, n_sensors); |
| 13 | 197 |
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198 printf_P(PSTR("%d sensors\n"), n_measurements); |
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199 for (uint8_t s = 0; s < n_sensors; s++) |
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200 { |
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201 uint8_t id[ID_LEN]; |
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202 printf_P(PSTR("%d : "), s); |
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203 eeprom_read_to(id, sensor_id[s], ID_LEN); |
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204 printhex(id, ID_LEN); |
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205 putchar('\n'); |
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206 for (uint8_t i = 0; i < ID_LEN; i++) |
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207 { |
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208 crc = _crc_ccitt_update(crc, id[i]); |
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209 } |
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210 } |
| 6 | 211 printf_P(PSTR("%d measurements\n"), n_measurements); |
| 14 | 212 for (uint16_t n = 0; n < n_measurements; n++) |
| 0 | 213 { |
| 14 | 214 printf_P(PSTR("%3d :"), n); |
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215 for (uint8_t s = 0; s < n_sensors; s++) |
| 13 | 216 { |
| 14 | 217 printf_P(PSTR(" %6d"), measurements[n][s]); |
| 218 crc = _crc_ccitt_update(crc, measurements[n][s]); | |
| 13 | 219 } |
| 220 putchar('\n'); | |
| 0 | 221 } |
| 6 | 222 printf_P(PSTR("CRC : %d\n"), crc); |
| 0 | 223 } |
| 224 | |
| 225 static void | |
| 226 cmd_clear() | |
| 227 { | |
| 7 | 228 n_measurements = 0; |
| 229 printf_P(PSTR("Cleared\n")); | |
| 0 | 230 } |
| 231 | |
| 232 static void | |
| 233 cmd_btoff() | |
| 234 { | |
| 7 | 235 printf_P(PSTR("Turning off\n")); |
| 236 _delay_ms(50); | |
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237 comms_timeout = 0; |
| 0 | 238 } |
| 239 | |
| 240 static void | |
| 12 | 241 cmd_measure() |
| 242 { | |
| 243 printf_P(PSTR("Measuring\n")); | |
| 244 need_measurement = 1; | |
| 245 } | |
| 246 | |
| 247 static void | |
| 248 cmd_sensors() | |
| 249 { | |
| 250 uint8_t ret = simple_ds18b20_start_meas(NULL); | |
| 14 | 251 printf_P(PSTR("All sensors, ret %d, waiting...\n"), ret); |
| 252 long_delay(DS18B20_TCONV_12BIT); | |
| 12 | 253 simple_ds18b20_read_all(); |
| 254 } | |
| 255 | |
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256 #if 0 |
| 13 | 257 // 0 on success |
| 258 static uint8_t | |
| 259 get_hex_string(const char *hex, uint8_t *out, uint8_t size) | |
| 260 { | |
| 261 uint8_t upper; | |
| 262 uint8_t o; | |
| 263 for (uint8_t i = 0, z = 0; o < size; i++) | |
| 264 { | |
| 265 uint8_t h = hex[i]; | |
| 266 if (h >= 'A' && h <= 'F') | |
| 267 { | |
| 268 // lower case | |
| 269 h += 0x20; | |
| 270 } | |
| 271 uint8_t nibble; | |
| 272 if (h >= '0' && h <= '9') | |
| 273 { | |
| 274 nibble = h - '0'; | |
| 275 } | |
| 276 else if (h >= 'a' && h <= 'f') | |
| 277 { | |
| 278 nibble = 10 + h - 'a'; | |
| 279 } | |
| 280 else if (h == ' ' || h == ':') | |
| 281 { | |
| 282 continue; | |
| 283 } | |
| 284 else | |
| 285 { | |
| 286 printf_P(PSTR("Bad hex 0x%x '%c'\n"), hex[i], hex[i]); | |
| 287 return 1; | |
| 288 } | |
| 289 | |
| 290 if (z % 2 == 0) | |
| 291 { | |
| 292 upper = nibble << 4; | |
| 293 } | |
| 294 else | |
| 295 { | |
| 296 out[o] = upper | nibble; | |
| 297 o++; | |
| 298 } | |
| 299 | |
| 300 z++; | |
| 301 } | |
| 302 | |
| 303 if (o != size) | |
| 304 { | |
| 305 printf_P(PSTR("Short hex\n")); | |
| 306 return 1; | |
| 307 } | |
| 308 return 0; | |
| 309 } | |
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310 #endif |
| 13 | 311 |
| 312 static void | |
| 313 add_sensor(uint8_t *id) | |
| 314 { | |
| 315 uint8_t n; | |
| 316 eeprom_read(n, n_sensors); | |
| 317 if (n < MAX_SENSORS) | |
| 318 { | |
| 319 cli(); | |
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320 eeprom_write_from(id, sensor_id[n], ID_LEN); |
| 13 | 321 n++; |
| 322 eeprom_write(n, n_sensors); | |
| 323 sei(); | |
| 324 printf_P(PSTR("Added sensor %d : "), n); | |
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325 printhex(id, ID_LEN); |
| 13 | 326 putchar('\n'); |
| 327 } | |
| 328 else | |
| 329 { | |
| 330 printf_P(PSTR("Too many sensors\n")); | |
| 331 } | |
| 332 } | |
| 333 | |
| 334 static void | |
| 335 cmd_add_all() | |
| 336 { | |
| 337 uint8_t id[OW_ROMCODE_SIZE]; | |
| 338 printf_P("Adding all\n"); | |
| 339 ow_reset(); | |
| 340 for( uint8_t diff = OW_SEARCH_FIRST; diff != OW_LAST_DEVICE; ) | |
| 341 { | |
| 342 diff = ow_rom_search( diff, &id[0] ); | |
| 343 if( diff == OW_PRESENCE_ERR ) { | |
| 344 printf_P( PSTR("No Sensor found\r") ); | |
| 345 return; | |
| 346 } | |
| 347 | |
| 348 if( diff == OW_DATA_ERR ) { | |
| 349 printf_P( PSTR("Bus Error\r") ); | |
| 350 return; | |
| 351 } | |
| 352 add_sensor(id); | |
| 353 } | |
| 354 } | |
| 355 | |
| 356 static void | |
| 357 cmd_init() | |
| 358 { | |
| 359 printf_P(PSTR("Resetting sensor list\n")); | |
| 360 uint8_t zero = 0; | |
| 361 cli(); | |
| 362 eeprom_write(zero, n_sensors); | |
| 363 sei(); | |
| 364 printf_P(PSTR("Done.\n")); | |
| 365 } | |
| 366 | |
| 367 static void | |
| 368 check_first_startup() | |
| 369 { | |
| 370 uint16_t magic; | |
| 371 eeprom_read(magic, magic); | |
| 372 if (magic != EXPECT_MAGIC) | |
| 373 { | |
| 374 printf_P(PSTR("First boot, looking for sensors...\n")); | |
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375 // in case of power fumbles don't want to reset during eeprom write, |
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376 long_delay(2); |
| 13 | 377 cmd_init(); |
| 378 cmd_add_all(); | |
| 14 | 379 cli(); |
| 380 magic = EXPECT_MAGIC; | |
| 381 eeprom_write(magic, magic); | |
| 382 sei(); | |
| 13 | 383 } |
| 384 } | |
| 385 | |
| 12 | 386 static void |
| 0 | 387 read_handler() |
| 388 { | |
| 6 | 389 if (strcmp_P(readbuf, PSTR("fetch")) == 0) |
| 0 | 390 { |
| 391 cmd_fetch(); | |
| 392 } | |
| 6 | 393 else if (strcmp_P(readbuf, PSTR("clear")) == 0) |
| 0 | 394 { |
| 395 cmd_clear(); | |
| 396 } | |
| 6 | 397 else if (strcmp_P(readbuf, PSTR("btoff")) == 0) |
| 0 | 398 { |
| 399 cmd_btoff(); | |
| 400 } | |
| 12 | 401 else if (strcmp_P(readbuf, PSTR("measure")) == 0) |
| 402 { | |
| 403 cmd_measure(); | |
| 404 } | |
| 405 else if (strcmp_P(readbuf, PSTR("sensors")) == 0) | |
| 406 { | |
| 407 cmd_sensors(); | |
| 408 } | |
| 13 | 409 else if (strcmp_P(readbuf, PSTR("addall"))== 0) |
| 410 { | |
| 411 cmd_add_all(); | |
| 412 } | |
| 413 else if (strcmp_P(readbuf, PSTR("init")) == 0) | |
| 414 { | |
| 415 cmd_init(); | |
| 416 } | |
| 0 | 417 else |
| 418 { | |
| 6 | 419 printf_P(PSTR("Bad command\n")); |
| 0 | 420 } |
| 421 } | |
| 422 | |
| 2 | 423 ISR(USART_RX_vect) |
| 0 | 424 { |
| 2 | 425 char c = UDR0; |
| 12 | 426 uart_putchar(c, NULL); |
| 427 if (c == '\r') | |
| 0 | 428 { |
| 429 readbuf[readpos] = '\0'; | |
| 430 read_handler(); | |
| 431 readpos = 0; | |
| 432 } | |
| 433 else | |
| 434 { | |
| 435 readbuf[readpos] = c; | |
| 436 readpos++; | |
| 437 if (readpos >= sizeof(readbuf)) | |
| 438 { | |
| 439 readpos = 0; | |
| 440 } | |
| 441 } | |
| 442 } | |
| 443 | |
| 2 | 444 ISR(TIMER2_COMPA_vect) |
| 1 | 445 { |
| 14 | 446 TCNT2 = 0; |
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447 measure_count ++; |
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448 comms_count ++; |
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449 |
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450 if (comms_timeout != 0) |
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451 { |
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452 comms_timeout--; |
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453 } |
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454 |
| 14 | 455 if (measure_count >= MEASURE_WAKE) |
| 1 | 456 { |
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457 measure_count = 0; |
| 1 | 458 need_measurement = 1; |
| 459 } | |
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460 |
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461 if (comms_count >= COMMS_WAKE) |
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462 { |
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463 comms_count = 0; |
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464 need_comms = 1; |
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465 } |
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466 |
| 1 | 467 } |
| 468 | |
| 3 | 469 DWORD get_fattime (void) |
| 470 { | |
| 471 return 0; | |
| 472 } | |
| 473 | |
| 1 | 474 static void |
| 475 deep_sleep() | |
| 476 { | |
| 477 // p119 of manual | |
| 2 | 478 OCR2A = SLEEP_COMPARE; |
| 479 loop_until_bit_is_clear(ASSR, OCR2AUB); | |
| 1 | 480 |
| 481 set_sleep_mode(SLEEP_MODE_PWR_SAVE); | |
| 482 sleep_mode(); | |
| 483 } | |
| 484 | |
| 485 static void | |
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486 idle_sleep() |
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487 { |
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488 set_sleep_mode(SLEEP_MODE_IDLE); |
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489 sleep_mode(); |
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490 } |
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491 |
| 14 | 492 #if 0 |
| 493 // untested | |
| 6 | 494 static void |
| 495 do_adc_335() | |
| 496 { | |
| 8 | 497 //PRR &= ~_BV(PRADC); |
| 6 | 498 |
| 499 ADMUX = _BV(ADLAR); | |
| 500 | |
| 501 // ADPS2 = /16 prescaler, 62khz at 1mhz clock | |
| 502 ADCSRA = _BV(ADEN) | _BV(ADPS2); | |
| 503 | |
| 504 // measure value | |
| 505 ADCSRA |= _BV(ADSC); | |
| 506 loop_until_bit_is_clear(ADCSRA, ADSC); | |
| 507 uint8_t low = ADCL; | |
| 508 uint8_t high = ADCH; | |
| 509 uint16_t f_measure = low + (high << 8); | |
| 510 | |
| 511 // set to measure 1.1 reference | |
| 512 ADMUX = _BV(ADLAR) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1); | |
| 513 ADCSRA |= _BV(ADSC); | |
| 514 loop_until_bit_is_clear(ADCSRA, ADSC); | |
| 515 uint8_t low_11 = ADCL; | |
| 516 uint8_t high_11 = ADCH; | |
| 517 uint16_t f_11 = low_11 + (high_11 << 8); | |
| 518 | |
| 519 float res_volts = 1.1 * f_measure / f_11; | |
| 520 | |
| 521 // 10mV/degree | |
| 522 // scale to 1/5 degree units above 0C | |
| 523 int temp = (res_volts - 2.73) * 500; | |
| 13 | 524 // XXX fixme |
| 525 //measurements[n_measurements] = temp; | |
| 6 | 526 // XXX something if it hits the limit |
| 527 | |
| 528 // measure AVR internal temperature against 1.1 ref. | |
| 529 ADMUX = _BV(ADLAR) | _BV(MUX3) | _BV(REFS1) | _BV(REFS0); | |
| 530 ADCSRA |= _BV(ADSC); | |
| 531 loop_until_bit_is_clear(ADCSRA, ADSC); | |
| 532 uint16_t res_internal = ADCL; | |
| 533 res_internal |= ADCH << 8; | |
| 534 | |
| 535 float internal_volts = res_internal * (1.1 / 1024.0); | |
| 536 | |
| 537 // 1mV/degree | |
| 538 int internal_temp = (internal_volts - 2.73) * 5000; | |
| 13 | 539 // XXX fixme |
| 540 //internal_measurements[n_measurements] = internal_temp; | |
| 6 | 541 |
| 542 printf_P("measure %d: external %d, internal %d, 1.1 %d\n", | |
| 543 n_measurements, temp, internal_temp, f_11); | |
| 544 | |
| 545 n_measurements++; | |
| 8 | 546 //PRR |= _BV(PRADC); |
| 6 | 547 } |
| 14 | 548 #endif |
| 6 | 549 |
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550 static void |
| 1 | 551 do_measurement() |
| 552 { | |
| 13 | 553 uint8_t n_sensors; |
| 14 | 554 printf("do_measurement\n"); |
| 13 | 555 eeprom_read(n_sensors, n_sensors); |
| 14 | 556 printf("do_measurement sensors %d\n", n_sensors); |
| 13 | 557 |
| 558 uint8_t ret = simple_ds18b20_start_meas(NULL); | |
| 14 | 559 printf_P(PSTR("Read all sensors, ret %d, waiting...\n"), ret); |
| 13 | 560 _delay_ms(DS18B20_TCONV_12BIT); |
| 561 | |
| 562 if (n_measurements == NUM_MEASUREMENTS) | |
| 563 { | |
| 14 | 564 printf_P(PSTR("Measurements .overflow\n")); |
| 13 | 565 n_measurements = 0; |
| 566 } | |
| 6 | 567 |
| 14 | 568 for (uint8_t s = 0; s < MAX_SENSORS; s++) |
| 13 | 569 { |
| 570 int16_t decicelsius; | |
| 14 | 571 if (s >= n_sensors) |
| 13 | 572 { |
| 573 decicelsius = VALUE_NOSENSOR; | |
| 574 } | |
| 575 else | |
| 576 { | |
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577 uint8_t id[ID_LEN]; |
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578 eeprom_read_to(id, sensor_id[s], ID_LEN); |
| 13 | 579 |
| 580 uint8_t ret = simple_ds18b20_read_decicelsius(id, &decicelsius); | |
| 581 if (ret != DS18X20_OK) | |
| 582 { | |
| 583 decicelsius = VALUE_BROKEN; | |
| 584 } | |
| 585 } | |
| 14 | 586 measurements[n_measurements][s] = decicelsius; |
| 13 | 587 } |
| 14 | 588 n_measurements++; |
| 12 | 589 //do_adc_335(); |
| 1 | 590 } |
| 591 | |
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592 static void |
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593 do_comms() |
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594 { |
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595 // turn on bluetooth |
| 7 | 596 uart_on(); |
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597 |
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598 // write sd card here? same 3.3v regulator... |
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599 |
| 12 | 600 printf("ready> \n"); |
| 601 | |
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602 for (comms_timeout = WAKE_SECS; comms_timeout > 0; ) |
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603 { |
| 6 | 604 if (need_measurement) |
| 605 { | |
| 14 | 606 need_measurement = 0; |
| 607 printf("measure from do_comms\n"); | |
| 6 | 608 do_measurement(); |
| 609 } | |
| 610 | |
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611 // wait for commands from the master |
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612 idle_sleep(); |
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613 } |
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614 |
| 6 | 615 uart_off(); |
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616 set_aux_power(0); |
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617 } |
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618 |
| 7 | 619 static void |
| 620 blink() | |
| 621 { | |
| 622 PORT_LED &= ~_BV(PIN_LED); | |
| 9 | 623 _delay_ms(1); |
| 7 | 624 PORT_LED |= _BV(PIN_LED); |
| 625 } | |
| 626 | |
| 627 static void | |
| 628 long_delay(int ms) | |
| 629 { | |
| 630 int iter = ms / 100; | |
| 631 | |
| 632 for (int i = 0; i < iter; i++) | |
| 633 { | |
| 634 _delay_ms(100); | |
| 635 } | |
| 636 } | |
| 637 | |
| 8 | 638 ISR(BADISR_vect) |
| 639 { | |
| 14 | 640 //uart_on(); |
| 8 | 641 printf_P(PSTR("Bad interrupt\n")); |
| 642 } | |
| 643 | |
| 9 | 644 |
| 0 | 645 int main(void) |
| 646 { | |
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647 setup_chip(); |
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648 blink(); |
| 9 | 649 |
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650 set_aux_power(0); |
| 7 | 651 |
| 6 | 652 stdout = &mystdout; |
| 7 | 653 uart_on(); |
| 654 | |
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655 printf(PSTR("Started.\n")); |
| 13 | 656 |
| 657 check_first_startup(); | |
| 658 | |
| 8 | 659 uart_off(); |
| 0 | 660 |
| 6 | 661 // turn off everything except timer2 |
| 8 | 662 //PRR = _BV(PRTWI) | _BV(PRTIM0) | _BV(PRTIM1) | _BV(PRSPI) | _BV(PRUSART0) | _BV(PRADC); |
| 663 | |
| 664 // for testing | |
| 665 uart_on(); | |
| 666 | |
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667 setup_tick_counter(); |
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668 |
| 12 | 669 sei(); |
| 8 | 670 |
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671 #if 0 |
| 6 | 672 for (;;) |
| 673 { | |
| 12 | 674 do_comms(); |
| 6 | 675 } |
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676 #endif |
| 12 | 677 |
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678 for(;;) |
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679 { |
| 1 | 680 if (need_measurement) |
| 681 { | |
| 14 | 682 need_measurement = 0; |
| 1 | 683 do_measurement(); |
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684 continue; |
| 1 | 685 } |
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686 |
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687 if (need_comms) |
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688 { |
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689 need_comms = 0; |
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690 do_comms(); |
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691 continue; |
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692 } |
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693 |
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694 deep_sleep(); |
| 9 | 695 blink(); |
| 10 | 696 printf("."); |
| 0 | 697 } |
| 12 | 698 |
| 0 | 699 return 0; /* never reached */ |
| 700 } |