Mercurial > templog
annotate main.c @ 19:f1016b151689
Merge
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Tue, 22 May 2012 21:32:52 +0800 |
| parents | a5e3b363675d bf733e8e8cf0 |
| children | 878be5e353a0 |
| 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 | |
| 17 | 63 static uint16_t n_measurements; |
| 13 | 64 // stored as decidegrees |
| 14 | 65 static int16_t measurements[NUM_MEASUREMENTS][MAX_SENSORS]; |
| 0 | 66 |
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67 // boolean flags |
| 17 | 68 static uint8_t need_measurement; |
| 69 static uint8_t need_comms; | |
| 1 | 70 |
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71 // counts down from WAKE_SECS to 0, goes to deep sleep when hits 0 |
| 17 | 72 static uint8_t comms_timeout; |
| 1 | 73 |
| 17 | 74 static uint8_t readpos; |
| 0 | 75 static char readbuf[30]; |
| 76 | |
| 17 | 77 static uint8_t measure_count; |
| 78 static uint16_t comms_count; | |
| 79 | |
| 80 static uint32_t clock_epoch; | |
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81 |
| 13 | 82 // thanks to http://projectgus.com/2010/07/eeprom-access-with-arduino/ |
| 83 #define eeprom_read_to(dst_p, eeprom_field, dst_size) eeprom_read_block((dst_p), (void *)offsetof(struct __eeprom_data, eeprom_field), (dst_size)) | |
| 84 #define eeprom_read(dst, eeprom_field) eeprom_read_to((&dst), eeprom_field, sizeof(dst)) | |
| 85 #define eeprom_write_from(src_p, eeprom_field, src_size) eeprom_write_block((src_p), (void *)offsetof(struct __eeprom_data, eeprom_field), (src_size)) | |
| 86 #define eeprom_write(src, eeprom_field) { eeprom_write_from(&src, eeprom_field, sizeof(src)); } | |
| 87 | |
| 88 #define EXPECT_MAGIC 0x67c9 | |
| 89 | |
| 90 struct __attribute__ ((__packed__)) __eeprom_data { | |
| 91 uint16_t magic; | |
| 92 uint8_t n_sensors; | |
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93 uint8_t sensor_id[MAX_SENSORS][ID_LEN]; |
| 13 | 94 }; |
| 95 | |
| 8 | 96 #define DEBUG(str) printf_P(PSTR(str)) |
| 97 | |
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98 static void deep_sleep(); |
| 1 | 99 |
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100 // Very first setup |
| 18 | 101 static void |
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102 setup_chip() |
| 18 | 103 { |
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104 // Set clock to 2mhz |
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105 cli(); |
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106 CLKPR = _BV(CLKPCE); |
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107 // divide by 4 |
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108 CLKPR = _BV(CLKPS1); |
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109 sei(); |
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110 |
| 19 | 111 // 3.3v power for bluetooth and SD |
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112 DDR_LED |= _BV(PIN_LED); |
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113 DDR_SHDN |= _BV(PIN_SHDN); |
| 19 | 114 |
| 18 | 115 // INT0 setup |
| 116 EIMSK = _BV(INT0); | |
| 117 // set pullup | |
| 118 PORTD |= _BV(PD2); | |
| 119 } | |
| 120 | |
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121 static void |
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122 set_aux_power(uint8_t on) |
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123 { |
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124 if (on) |
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125 { |
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126 PORT_SHDN &= ~_BV(PIN_SHDN); |
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127 } |
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128 else |
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129 { |
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130 PORT_SHDN |= _BV(PIN_SHDN); |
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131 } |
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132 } |
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133 |
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134 static void |
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135 setup_tick_counter() |
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136 { |
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137 // set up counter2. |
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138 // COM21 COM20 Set OC2 on Compare Match (p116) |
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139 // WGM21 Clear counter on compare |
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140 //TCCR2A = _BV(COM2A1) | _BV(COM2A0) | _BV(WGM21); |
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141 // toggle on match |
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142 TCCR2A = _BV(COM2A0); |
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143 // CS22 CS21 CS20 clk/1024 |
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144 TCCR2B = _BV(CS22) | _BV(CS21) | _BV(CS20); |
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145 // set async mode |
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146 ASSR |= _BV(AS2); |
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147 TCNT2 = 0; |
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148 OCR2A = SLEEP_COMPARE; |
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149 // interrupt |
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150 TIMSK2 = _BV(OCIE2A); |
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151 } |
| 18 | 152 |
| 0 | 153 static void |
| 7 | 154 uart_on() |
| 0 | 155 { |
| 8 | 156 // Power reduction register |
| 157 //PRR &= ~_BV(PRUSART0); | |
| 158 | |
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159 // All of this needs to be done each time after turning off the PRR |
| 0 | 160 // baud rate |
| 7 | 161 UBRR0H = (unsigned char)(UBRR >> 8); |
| 162 UBRR0L = (unsigned char)UBRR; | |
| 163 // set 2x clock, improves accuracy of UBRR | |
| 164 UCSR0A |= _BV(U2X0); | |
| 6 | 165 UCSR0B = _BV(RXCIE0) | _BV(RXEN0) | _BV(TXEN0); |
| 0 | 166 //8N1 |
| 7 | 167 UCSR0C = _BV(UCSZ01) | _BV(UCSZ00); |
| 6 | 168 } |
| 169 | |
| 170 static void | |
| 171 uart_off() | |
| 172 { | |
| 173 // Turn of interrupts and disable tx/rx | |
| 174 UCSR0B = 0; | |
| 175 | |
| 176 // Power reduction register | |
| 8 | 177 //PRR |= _BV(PRUSART0); |
| 0 | 178 } |
| 179 | |
| 10 | 180 int |
| 0 | 181 uart_putchar(char c, FILE *stream) |
| 182 { | |
| 10 | 183 // XXX should sleep in the loop for power. |
| 8 | 184 if (c == '\n') |
| 185 { | |
| 10 | 186 loop_until_bit_is_set(UCSR0A, UDRE0); |
| 187 UDR0 = '\r';; | |
| 8 | 188 } |
| 2 | 189 loop_until_bit_is_set(UCSR0A, UDRE0); |
| 190 UDR0 = c; | |
| 10 | 191 if (c == '\r') |
| 192 { | |
| 193 loop_until_bit_is_set(UCSR0A, UDRE0); | |
| 194 UDR0 = '\n';; | |
| 195 } | |
| 0 | 196 return 0; |
| 197 } | |
| 198 | |
| 199 static void | |
| 17 | 200 update_crc(uint16_t *crc, const void *data, uint8_t len) |
| 201 { | |
| 202 for (uint8_t i = 0; i < len; i++) | |
| 203 { | |
| 204 *crc = _crc_ccitt_update(*crc, ((const uint8_t*)data)[i]); | |
| 205 } | |
| 206 } | |
| 207 | |
| 208 static void | |
| 0 | 209 cmd_fetch() |
| 210 { | |
| 211 uint16_t crc = 0; | |
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212 uint8_t n_sensors; |
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213 eeprom_read(n_sensors, n_sensors); |
| 13 | 214 |
| 17 | 215 printf_P(PSTR("Time %lu\n"), clock_epoch); |
| 216 update_crc(&crc, &clock_epoch, sizeof(clock_epoch)); | |
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217 printf_P(PSTR("%d sensors\n"), n_measurements); |
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218 for (uint8_t s = 0; s < n_sensors; s++) |
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219 { |
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220 uint8_t id[ID_LEN]; |
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221 printf_P(PSTR("%d : "), s); |
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222 eeprom_read_to(id, sensor_id[s], ID_LEN); |
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223 printhex(id, ID_LEN); |
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224 putchar('\n'); |
| 17 | 225 update_crc(&crc, id, ID_LEN); |
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226 } |
| 6 | 227 printf_P(PSTR("%d measurements\n"), n_measurements); |
| 14 | 228 for (uint16_t n = 0; n < n_measurements; n++) |
| 0 | 229 { |
| 14 | 230 printf_P(PSTR("%3d :"), n); |
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231 for (uint8_t s = 0; s < n_sensors; s++) |
| 13 | 232 { |
| 14 | 233 printf_P(PSTR(" %6d"), measurements[n][s]); |
| 17 | 234 update_crc(&crc, &measurements[n][s], sizeof(measurements[n][s])); |
| 13 | 235 } |
| 236 putchar('\n'); | |
| 0 | 237 } |
| 6 | 238 printf_P(PSTR("CRC : %d\n"), crc); |
| 0 | 239 } |
| 240 | |
| 241 static void | |
| 242 cmd_clear() | |
| 243 { | |
| 7 | 244 n_measurements = 0; |
| 245 printf_P(PSTR("Cleared\n")); | |
| 0 | 246 } |
| 247 | |
| 248 static void | |
| 249 cmd_btoff() | |
| 250 { | |
| 7 | 251 printf_P(PSTR("Turning off\n")); |
| 252 _delay_ms(50); | |
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253 comms_timeout = 0; |
| 0 | 254 } |
| 255 | |
| 256 static void | |
| 12 | 257 cmd_measure() |
| 258 { | |
| 259 printf_P(PSTR("Measuring\n")); | |
| 260 need_measurement = 1; | |
| 261 } | |
| 262 | |
| 263 static void | |
| 264 cmd_sensors() | |
| 265 { | |
| 266 uint8_t ret = simple_ds18b20_start_meas(NULL); | |
| 14 | 267 printf_P(PSTR("All sensors, ret %d, waiting...\n"), ret); |
| 268 long_delay(DS18B20_TCONV_12BIT); | |
| 12 | 269 simple_ds18b20_read_all(); |
| 270 } | |
| 271 | |
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272 #if 0 |
| 13 | 273 // 0 on success |
| 274 static uint8_t | |
| 275 get_hex_string(const char *hex, uint8_t *out, uint8_t size) | |
| 276 { | |
| 277 uint8_t upper; | |
| 278 uint8_t o; | |
| 279 for (uint8_t i = 0, z = 0; o < size; i++) | |
| 280 { | |
| 281 uint8_t h = hex[i]; | |
| 282 if (h >= 'A' && h <= 'F') | |
| 283 { | |
| 284 // lower case | |
| 285 h += 0x20; | |
| 286 } | |
| 287 uint8_t nibble; | |
| 288 if (h >= '0' && h <= '9') | |
| 289 { | |
| 290 nibble = h - '0'; | |
| 291 } | |
| 292 else if (h >= 'a' && h <= 'f') | |
| 293 { | |
| 294 nibble = 10 + h - 'a'; | |
| 295 } | |
| 296 else if (h == ' ' || h == ':') | |
| 297 { | |
| 298 continue; | |
| 299 } | |
| 300 else | |
| 301 { | |
| 302 printf_P(PSTR("Bad hex 0x%x '%c'\n"), hex[i], hex[i]); | |
| 303 return 1; | |
| 304 } | |
| 305 | |
| 306 if (z % 2 == 0) | |
| 307 { | |
| 308 upper = nibble << 4; | |
| 309 } | |
| 310 else | |
| 311 { | |
| 312 out[o] = upper | nibble; | |
| 313 o++; | |
| 314 } | |
| 315 | |
| 316 z++; | |
| 317 } | |
| 318 | |
| 319 if (o != size) | |
| 320 { | |
| 321 printf_P(PSTR("Short hex\n")); | |
| 322 return 1; | |
| 323 } | |
| 324 return 0; | |
| 325 } | |
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326 #endif |
| 13 | 327 |
| 328 static void | |
| 329 add_sensor(uint8_t *id) | |
| 330 { | |
| 331 uint8_t n; | |
| 332 eeprom_read(n, n_sensors); | |
| 333 if (n < MAX_SENSORS) | |
| 334 { | |
| 335 cli(); | |
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336 eeprom_write_from(id, sensor_id[n], ID_LEN); |
| 13 | 337 n++; |
| 338 eeprom_write(n, n_sensors); | |
| 339 sei(); | |
| 340 printf_P(PSTR("Added sensor %d : "), n); | |
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341 printhex(id, ID_LEN); |
| 13 | 342 putchar('\n'); |
| 343 } | |
| 344 else | |
| 345 { | |
| 346 printf_P(PSTR("Too many sensors\n")); | |
| 347 } | |
| 348 } | |
| 349 | |
| 350 static void | |
| 351 cmd_add_all() | |
| 352 { | |
| 353 uint8_t id[OW_ROMCODE_SIZE]; | |
| 354 printf_P("Adding all\n"); | |
| 355 ow_reset(); | |
| 356 for( uint8_t diff = OW_SEARCH_FIRST; diff != OW_LAST_DEVICE; ) | |
| 357 { | |
| 358 diff = ow_rom_search( diff, &id[0] ); | |
| 359 if( diff == OW_PRESENCE_ERR ) { | |
| 360 printf_P( PSTR("No Sensor found\r") ); | |
| 361 return; | |
| 362 } | |
| 363 | |
| 364 if( diff == OW_DATA_ERR ) { | |
| 365 printf_P( PSTR("Bus Error\r") ); | |
| 366 return; | |
| 367 } | |
| 368 add_sensor(id); | |
| 369 } | |
| 370 } | |
| 371 | |
| 372 static void | |
| 373 cmd_init() | |
| 374 { | |
| 375 printf_P(PSTR("Resetting sensor list\n")); | |
| 376 uint8_t zero = 0; | |
| 377 cli(); | |
| 378 eeprom_write(zero, n_sensors); | |
| 379 sei(); | |
| 380 printf_P(PSTR("Done.\n")); | |
| 381 } | |
| 382 | |
| 383 static void | |
| 17 | 384 cmd_settime(const char *str) |
| 385 { | |
| 386 clock_epoch = strtoul(str, NULL, 10); | |
| 387 printf_P(PSTR("Time set to %lu\n"), clock_epoch); | |
| 388 } | |
| 389 | |
| 390 static void | |
| 13 | 391 check_first_startup() |
| 392 { | |
| 393 uint16_t magic; | |
| 394 eeprom_read(magic, magic); | |
| 395 if (magic != EXPECT_MAGIC) | |
| 396 { | |
| 397 printf_P(PSTR("First boot, looking for sensors...\n")); | |
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398 // in case of power fumbles don't want to reset during eeprom write, |
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399 long_delay(2); |
| 13 | 400 cmd_init(); |
| 401 cmd_add_all(); | |
| 14 | 402 cli(); |
| 403 magic = EXPECT_MAGIC; | |
| 404 eeprom_write(magic, magic); | |
| 405 sei(); | |
| 13 | 406 } |
| 407 } | |
| 408 | |
| 12 | 409 static void |
| 0 | 410 read_handler() |
| 411 { | |
| 6 | 412 if (strcmp_P(readbuf, PSTR("fetch")) == 0) |
| 0 | 413 { |
| 414 cmd_fetch(); | |
| 415 } | |
| 6 | 416 else if (strcmp_P(readbuf, PSTR("clear")) == 0) |
| 0 | 417 { |
| 418 cmd_clear(); | |
| 419 } | |
| 6 | 420 else if (strcmp_P(readbuf, PSTR("btoff")) == 0) |
| 0 | 421 { |
| 422 cmd_btoff(); | |
| 423 } | |
| 12 | 424 else if (strcmp_P(readbuf, PSTR("measure")) == 0) |
| 425 { | |
| 426 cmd_measure(); | |
| 427 } | |
| 428 else if (strcmp_P(readbuf, PSTR("sensors")) == 0) | |
| 429 { | |
| 430 cmd_sensors(); | |
| 431 } | |
| 13 | 432 else if (strcmp_P(readbuf, PSTR("addall"))== 0) |
| 433 { | |
| 434 cmd_add_all(); | |
| 435 } | |
| 17 | 436 else if (strncmp_P(readbuf, PSTR("settime "), |
| 437 strlen("settime ") == 0)) | |
| 438 { | |
| 439 cmd_settime(&readbuf[strlen("settime ")]); | |
| 440 } | |
| 13 | 441 else if (strcmp_P(readbuf, PSTR("init")) == 0) |
| 442 { | |
| 443 cmd_init(); | |
| 444 } | |
| 0 | 445 else |
| 446 { | |
| 6 | 447 printf_P(PSTR("Bad command\n")); |
| 0 | 448 } |
| 449 } | |
| 450 | |
| 18 | 451 ISR(INT0_vwct) |
| 452 { | |
| 453 need_comms = 1; | |
| 454 } | |
| 455 | |
| 456 | |
| 2 | 457 ISR(USART_RX_vect) |
| 0 | 458 { |
| 2 | 459 char c = UDR0; |
| 12 | 460 uart_putchar(c, NULL); |
| 461 if (c == '\r') | |
| 0 | 462 { |
| 463 readbuf[readpos] = '\0'; | |
| 464 read_handler(); | |
| 465 readpos = 0; | |
| 466 } | |
| 467 else | |
| 468 { | |
| 469 readbuf[readpos] = c; | |
| 470 readpos++; | |
| 471 if (readpos >= sizeof(readbuf)) | |
| 472 { | |
| 473 readpos = 0; | |
| 474 } | |
| 475 } | |
| 476 } | |
| 477 | |
| 2 | 478 ISR(TIMER2_COMPA_vect) |
| 1 | 479 { |
| 14 | 480 TCNT2 = 0; |
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481 measure_count ++; |
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482 comms_count ++; |
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483 |
| 17 | 484 clock_epoch ++; |
| 485 | |
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486 if (comms_timeout != 0) |
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487 { |
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488 comms_timeout--; |
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489 } |
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490 |
| 14 | 491 if (measure_count >= MEASURE_WAKE) |
| 1 | 492 { |
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493 measure_count = 0; |
| 1 | 494 need_measurement = 1; |
| 495 } | |
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496 |
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497 if (comms_count >= COMMS_WAKE) |
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498 { |
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499 comms_count = 0; |
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500 need_comms = 1; |
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501 } |
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502 |
| 1 | 503 } |
| 504 | |
| 3 | 505 DWORD get_fattime (void) |
| 506 { | |
| 507 return 0; | |
| 508 } | |
| 509 | |
| 1 | 510 static void |
| 511 deep_sleep() | |
| 512 { | |
| 513 // p119 of manual | |
| 2 | 514 OCR2A = SLEEP_COMPARE; |
| 515 loop_until_bit_is_clear(ASSR, OCR2AUB); | |
| 1 | 516 |
| 517 set_sleep_mode(SLEEP_MODE_PWR_SAVE); | |
| 518 sleep_mode(); | |
| 519 } | |
| 520 | |
| 521 static void | |
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522 idle_sleep() |
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523 { |
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524 set_sleep_mode(SLEEP_MODE_IDLE); |
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525 sleep_mode(); |
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526 } |
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527 |
| 14 | 528 #if 0 |
| 529 // untested | |
| 6 | 530 static void |
| 531 do_adc_335() | |
| 532 { | |
| 8 | 533 //PRR &= ~_BV(PRADC); |
| 6 | 534 |
| 535 ADMUX = _BV(ADLAR); | |
| 536 | |
| 537 // ADPS2 = /16 prescaler, 62khz at 1mhz clock | |
| 538 ADCSRA = _BV(ADEN) | _BV(ADPS2); | |
| 539 | |
| 540 // measure value | |
| 541 ADCSRA |= _BV(ADSC); | |
| 542 loop_until_bit_is_clear(ADCSRA, ADSC); | |
| 543 uint8_t low = ADCL; | |
| 544 uint8_t high = ADCH; | |
| 545 uint16_t f_measure = low + (high << 8); | |
| 546 | |
| 547 // set to measure 1.1 reference | |
| 548 ADMUX = _BV(ADLAR) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1); | |
| 549 ADCSRA |= _BV(ADSC); | |
| 550 loop_until_bit_is_clear(ADCSRA, ADSC); | |
| 551 uint8_t low_11 = ADCL; | |
| 552 uint8_t high_11 = ADCH; | |
| 553 uint16_t f_11 = low_11 + (high_11 << 8); | |
| 554 | |
| 555 float res_volts = 1.1 * f_measure / f_11; | |
| 556 | |
| 557 // 10mV/degree | |
| 558 // scale to 1/5 degree units above 0C | |
| 559 int temp = (res_volts - 2.73) * 500; | |
| 13 | 560 // XXX fixme |
| 561 //measurements[n_measurements] = temp; | |
| 6 | 562 // XXX something if it hits the limit |
| 563 | |
| 564 // measure AVR internal temperature against 1.1 ref. | |
| 565 ADMUX = _BV(ADLAR) | _BV(MUX3) | _BV(REFS1) | _BV(REFS0); | |
| 566 ADCSRA |= _BV(ADSC); | |
| 567 loop_until_bit_is_clear(ADCSRA, ADSC); | |
| 568 uint16_t res_internal = ADCL; | |
| 569 res_internal |= ADCH << 8; | |
| 570 | |
| 571 float internal_volts = res_internal * (1.1 / 1024.0); | |
| 572 | |
| 573 // 1mV/degree | |
| 574 int internal_temp = (internal_volts - 2.73) * 5000; | |
| 13 | 575 // XXX fixme |
| 576 //internal_measurements[n_measurements] = internal_temp; | |
| 6 | 577 |
| 578 printf_P("measure %d: external %d, internal %d, 1.1 %d\n", | |
| 579 n_measurements, temp, internal_temp, f_11); | |
| 580 | |
| 581 n_measurements++; | |
| 8 | 582 //PRR |= _BV(PRADC); |
| 6 | 583 } |
| 14 | 584 #endif |
| 6 | 585 |
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586 static void |
| 1 | 587 do_measurement() |
| 588 { | |
| 13 | 589 uint8_t n_sensors; |
| 14 | 590 printf("do_measurement\n"); |
| 13 | 591 eeprom_read(n_sensors, n_sensors); |
| 14 | 592 printf("do_measurement sensors %d\n", n_sensors); |
| 13 | 593 |
| 594 uint8_t ret = simple_ds18b20_start_meas(NULL); | |
| 14 | 595 printf_P(PSTR("Read all sensors, ret %d, waiting...\n"), ret); |
| 13 | 596 _delay_ms(DS18B20_TCONV_12BIT); |
| 597 | |
| 598 if (n_measurements == NUM_MEASUREMENTS) | |
| 599 { | |
| 14 | 600 printf_P(PSTR("Measurements .overflow\n")); |
| 13 | 601 n_measurements = 0; |
| 602 } | |
| 6 | 603 |
| 14 | 604 for (uint8_t s = 0; s < MAX_SENSORS; s++) |
| 13 | 605 { |
| 606 int16_t decicelsius; | |
| 14 | 607 if (s >= n_sensors) |
| 13 | 608 { |
| 609 decicelsius = VALUE_NOSENSOR; | |
| 610 } | |
| 611 else | |
| 612 { | |
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613 uint8_t id[ID_LEN]; |
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614 eeprom_read_to(id, sensor_id[s], ID_LEN); |
| 13 | 615 |
| 616 uint8_t ret = simple_ds18b20_read_decicelsius(id, &decicelsius); | |
| 617 if (ret != DS18X20_OK) | |
| 618 { | |
| 619 decicelsius = VALUE_BROKEN; | |
| 620 } | |
| 621 } | |
| 14 | 622 measurements[n_measurements][s] = decicelsius; |
| 13 | 623 } |
| 14 | 624 n_measurements++; |
| 12 | 625 //do_adc_335(); |
| 1 | 626 } |
| 627 | |
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628 static void |
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629 do_comms() |
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630 { |
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631 // turn on bluetooth |
| 7 | 632 uart_on(); |
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633 |
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634 // write sd card here? same 3.3v regulator... |
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635 |
| 12 | 636 printf("ready> \n"); |
| 637 | |
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638 for (comms_timeout = WAKE_SECS; comms_timeout > 0; ) |
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639 { |
| 6 | 640 if (need_measurement) |
| 641 { | |
| 14 | 642 need_measurement = 0; |
| 643 printf("measure from do_comms\n"); | |
| 6 | 644 do_measurement(); |
| 645 } | |
| 646 | |
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647 // wait for commands from the master |
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648 idle_sleep(); |
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649 } |
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650 |
| 6 | 651 uart_off(); |
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652 set_aux_power(0); |
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653 } |
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654 |
| 7 | 655 static void |
| 656 blink() | |
| 657 { | |
| 658 PORT_LED &= ~_BV(PIN_LED); | |
| 9 | 659 _delay_ms(1); |
| 7 | 660 PORT_LED |= _BV(PIN_LED); |
| 661 } | |
| 662 | |
| 663 static void | |
| 664 long_delay(int ms) | |
| 665 { | |
| 666 int iter = ms / 100; | |
| 667 | |
| 668 for (int i = 0; i < iter; i++) | |
| 669 { | |
| 670 _delay_ms(100); | |
| 671 } | |
| 672 } | |
| 673 | |
| 8 | 674 ISR(BADISR_vect) |
| 675 { | |
| 14 | 676 //uart_on(); |
| 8 | 677 printf_P(PSTR("Bad interrupt\n")); |
| 678 } | |
| 679 | |
| 9 | 680 |
| 0 | 681 int main(void) |
| 682 { | |
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683 setup_chip(); |
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684 blink(); |
| 9 | 685 |
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686 set_aux_power(0); |
| 7 | 687 |
| 6 | 688 stdout = &mystdout; |
| 7 | 689 uart_on(); |
| 690 | |
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691 printf(PSTR("Started.\n")); |
| 13 | 692 |
| 693 check_first_startup(); | |
| 694 | |
| 8 | 695 uart_off(); |
| 0 | 696 |
| 6 | 697 // turn off everything except timer2 |
| 8 | 698 //PRR = _BV(PRTWI) | _BV(PRTIM0) | _BV(PRTIM1) | _BV(PRSPI) | _BV(PRUSART0) | _BV(PRADC); |
| 699 | |
| 700 // for testing | |
| 701 uart_on(); | |
| 702 | |
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703 setup_tick_counter(); |
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704 |
| 12 | 705 sei(); |
| 8 | 706 |
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707 #if 0 |
| 6 | 708 for (;;) |
| 709 { | |
| 12 | 710 do_comms(); |
| 6 | 711 } |
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712 #endif |
| 12 | 713 |
|
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714 for(;;) |
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715 { |
| 1 | 716 if (need_measurement) |
| 717 { | |
| 14 | 718 need_measurement = 0; |
| 1 | 719 do_measurement(); |
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720 continue; |
| 1 | 721 } |
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722 |
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723 if (need_comms) |
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724 { |
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725 need_comms = 0; |
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726 do_comms(); |
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727 continue; |
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728 } |
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729 |
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730 deep_sleep(); |
| 9 | 731 blink(); |
| 10 | 732 printf("."); |
| 0 | 733 } |
| 12 | 734 |
| 0 | 735 return 0; /* never reached */ |
| 736 } |