Mercurial > templog
annotate main.c @ 326:f6b5941b4c34
Untested - calculate crc in uart_putchar
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Tue, 22 May 2012 23:23:38 +0800 |
| parents | b05c9fd7c098 |
| children | 885532437100 |
| rev | line source |
|---|---|
| 306 | 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> | |
| 319 | 9 #include <stddef.h> |
| 307 | 10 #include <avr/io.h> |
| 11 #include <avr/interrupt.h> | |
| 12 #include <avr/sleep.h> | |
| 313 | 13 #include <util/delay.h> |
| 312 | 14 #include <avr/pgmspace.h> |
| 319 | 15 #include <avr/eeprom.h> |
| 306 | 16 #include <util/crc16.h> |
| 17 | |
| 318 | 18 // for DWORD of get_fattime() |
| 309 | 19 #include "integer.h" |
| 318 | 20 |
| 21 #include "simple_ds18b20.h" | |
| 319 | 22 #include "onewire.h" |
| 309 | 23 |
| 306 | 24 // configuration params |
| 25 // - measurement interval | |
| 26 // - transmit interval | |
| 27 // - bluetooth params | |
| 28 // - number of sensors (and range?) | |
| 29 | |
| 307 | 30 // 1 second. we have 1024 prescaler, 32768 crystal. |
| 308 | 31 #define SLEEP_COMPARE 32 |
| 320 | 32 #define MEASURE_WAKE 10 |
|
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33 |
| 319 | 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 |
| 308 | 39 |
| 316 | 40 #define BAUD 19200 |
| 313 | 41 #define UBRR ((F_CPU)/8/(BAUD)-1) |
| 42 | |
| 43 #define PORT_LED PORTC | |
| 44 #define DDR_LED DDRC | |
| 45 #define PIN_LED PC4 | |
| 307 | 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 |
| 319 | 51 #define NUM_MEASUREMENTS 100 |
| 52 #define MAX_SENSORS 5 | |
| 312 | 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 |
| 316 | 57 int uart_putchar(char c, FILE *stream); |
| 320 | 58 static void long_delay(int ms); |
| 59 | |
| 306 | 60 static FILE mystdout = FDEV_SETUP_STREAM(uart_putchar, NULL, |
| 61 _FDEV_SETUP_WRITE); | |
| 62 | |
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63 uint16_t crc_out; |
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64 static FILE _crc_stdout = FDEV_SETUP_STREAM(uart_putchar, NULL, |
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65 _FDEV_SETUP_WRITE); |
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66 // convenience |
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67 static FILE *crc_stdout = &_crc_stdout; |
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68 |
| 323 | 69 static uint16_t n_measurements; |
| 319 | 70 // stored as decidegrees |
| 320 | 71 static int16_t measurements[NUM_MEASUREMENTS][MAX_SENSORS]; |
| 306 | 72 |
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73 // boolean flags |
| 323 | 74 static uint8_t need_measurement; |
| 75 static uint8_t need_comms; | |
| 307 | 76 |
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77 // counts down from WAKE_SECS to 0, goes to deep sleep when hits 0 |
| 323 | 78 static uint8_t comms_timeout; |
| 307 | 79 |
| 323 | 80 static uint8_t readpos; |
| 306 | 81 static char readbuf[30]; |
| 82 | |
| 323 | 83 static uint8_t measure_count; |
| 84 static uint16_t comms_count; | |
| 85 | |
| 86 static uint32_t clock_epoch; | |
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87 |
| 319 | 88 // thanks to http://projectgus.com/2010/07/eeprom-access-with-arduino/ |
| 89 #define eeprom_read_to(dst_p, eeprom_field, dst_size) eeprom_read_block((dst_p), (void *)offsetof(struct __eeprom_data, eeprom_field), (dst_size)) | |
| 90 #define eeprom_read(dst, eeprom_field) eeprom_read_to((&dst), eeprom_field, sizeof(dst)) | |
| 91 #define eeprom_write_from(src_p, eeprom_field, src_size) eeprom_write_block((src_p), (void *)offsetof(struct __eeprom_data, eeprom_field), (src_size)) | |
| 92 #define eeprom_write(src, eeprom_field) { eeprom_write_from(&src, eeprom_field, sizeof(src)); } | |
| 93 | |
| 94 #define EXPECT_MAGIC 0x67c9 | |
| 95 | |
| 96 struct __attribute__ ((__packed__)) __eeprom_data { | |
| 97 uint16_t magic; | |
| 98 uint8_t n_sensors; | |
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99 uint8_t sensor_id[MAX_SENSORS][ID_LEN]; |
| 319 | 100 }; |
| 101 | |
| 314 | 102 #define DEBUG(str) printf_P(PSTR(str)) |
| 103 | |
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104 static void deep_sleep(); |
| 307 | 105 |
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106 // Very first setup |
| 324 | 107 static void |
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108 setup_chip() |
| 324 | 109 { |
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110 // Set clock to 2mhz |
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111 cli(); |
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112 CLKPR = _BV(CLKPCE); |
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113 // divide by 4 |
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114 CLKPR = _BV(CLKPS1); |
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115 sei(); |
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116 |
| 325 | 117 // 3.3v power for bluetooth and SD |
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118 DDR_LED |= _BV(PIN_LED); |
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119 DDR_SHDN |= _BV(PIN_SHDN); |
| 325 | 120 |
| 324 | 121 // INT0 setup |
| 122 EIMSK = _BV(INT0); | |
| 123 // set pullup | |
| 124 PORTD |= _BV(PD2); | |
| 125 } | |
| 126 | |
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127 static void |
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128 set_aux_power(uint8_t on) |
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129 { |
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130 if (on) |
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131 { |
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132 PORT_SHDN &= ~_BV(PIN_SHDN); |
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133 } |
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134 else |
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135 { |
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136 PORT_SHDN |= _BV(PIN_SHDN); |
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137 } |
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138 } |
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139 |
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140 static void |
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141 setup_tick_counter() |
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142 { |
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143 // set up counter2. |
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144 // COM21 COM20 Set OC2 on Compare Match (p116) |
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145 // WGM21 Clear counter on compare |
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146 //TCCR2A = _BV(COM2A1) | _BV(COM2A0) | _BV(WGM21); |
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147 // toggle on match |
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148 TCCR2A = _BV(COM2A0); |
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149 // CS22 CS21 CS20 clk/1024 |
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150 TCCR2B = _BV(CS22) | _BV(CS21) | _BV(CS20); |
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151 // set async mode |
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152 ASSR |= _BV(AS2); |
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153 TCNT2 = 0; |
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154 OCR2A = SLEEP_COMPARE; |
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155 // interrupt |
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156 TIMSK2 = _BV(OCIE2A); |
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157 } |
| 324 | 158 |
| 306 | 159 static void |
| 313 | 160 uart_on() |
| 306 | 161 { |
| 314 | 162 // Power reduction register |
| 163 //PRR &= ~_BV(PRUSART0); | |
| 164 | |
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165 // All of this needs to be done each time after turning off the PRR |
| 306 | 166 // baud rate |
| 313 | 167 UBRR0H = (unsigned char)(UBRR >> 8); |
| 168 UBRR0L = (unsigned char)UBRR; | |
| 169 // set 2x clock, improves accuracy of UBRR | |
| 170 UCSR0A |= _BV(U2X0); | |
| 312 | 171 UCSR0B = _BV(RXCIE0) | _BV(RXEN0) | _BV(TXEN0); |
| 306 | 172 //8N1 |
| 313 | 173 UCSR0C = _BV(UCSZ01) | _BV(UCSZ00); |
| 312 | 174 } |
| 175 | |
| 176 static void | |
| 177 uart_off() | |
| 178 { | |
| 179 // Turn of interrupts and disable tx/rx | |
| 180 UCSR0B = 0; | |
| 181 | |
| 182 // Power reduction register | |
| 314 | 183 //PRR |= _BV(PRUSART0); |
| 306 | 184 } |
| 185 | |
| 316 | 186 int |
| 306 | 187 uart_putchar(char c, FILE *stream) |
| 188 { | |
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189 // XXX could perhaps sleep in the loop for power. |
| 314 | 190 if (c == '\n') |
| 191 { | |
| 316 | 192 loop_until_bit_is_set(UCSR0A, UDRE0); |
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193 UDR0 = '\r'; |
| 314 | 194 } |
| 308 | 195 loop_until_bit_is_set(UCSR0A, UDRE0); |
| 196 UDR0 = c; | |
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197 if (stream == crc_stdout) |
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198 { |
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199 crc_out = _crc_ccitt_update(crc_out, '\n'); |
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200 } |
| 316 | 201 if (c == '\r') |
| 202 { | |
| 203 loop_until_bit_is_set(UCSR0A, UDRE0); | |
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204 UDR0 = '\n'; |
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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, '\n'); |
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208 } |
| 316 | 209 } |
| 306 | 210 return 0; |
| 211 } | |
| 212 | |
| 213 static void | |
| 214 cmd_fetch() | |
| 215 { | |
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216 crc_out = 0; |
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217 uint8_t n_sensors; |
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218 eeprom_read(n_sensors, n_sensors); |
| 319 | 219 |
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220 fprintf_P(crc_stdout, PSTR("START\n")); |
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221 fprintf_P(crc_stdout, PSTR("time=%lu\n"), clock_epoch); |
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222 fprintf_P(crc_stdout, PSTR("sensors=%d\n"), n_measurements); |
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223 for (uint8_t s = 0; s < n_sensors; s++) |
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224 { |
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225 uint8_t id[ID_LEN]; |
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226 fprintf_P(crc_stdout, PSTR("sensor_id%d="), s); |
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227 eeprom_read_to(id, sensor_id[s], ID_LEN); |
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228 printhex(id, ID_LEN, crc_stdout); |
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229 fputc('\n', crc_stdout); |
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230 } |
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231 fprintf_P(crc_stdout, PSTR("measurements=%d\n"), n_measurements); |
| 320 | 232 for (uint16_t n = 0; n < n_measurements; n++) |
| 306 | 233 { |
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234 fprintf_P(crc_stdout, PSTR("meas%3d="), n); |
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235 for (uint8_t s = 0; s < n_sensors; s++) |
| 319 | 236 { |
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237 fprintf_P(crc_stdout, PSTR(" %6d"), measurements[n][s]); |
| 319 | 238 } |
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239 fputc('\n', crc_stdout); |
| 306 | 240 } |
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241 fprintf_P(crc_stdout, PSTR("END\n")); |
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242 fprintf_P(stdout, PSTR("CRC=%d\n"), crc_out); |
| 306 | 243 } |
| 244 | |
| 245 static void | |
| 246 cmd_clear() | |
| 247 { | |
| 313 | 248 n_measurements = 0; |
| 249 printf_P(PSTR("Cleared\n")); | |
| 306 | 250 } |
| 251 | |
| 252 static void | |
| 253 cmd_btoff() | |
| 254 { | |
| 313 | 255 printf_P(PSTR("Turning off\n")); |
| 256 _delay_ms(50); | |
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257 comms_timeout = 0; |
| 306 | 258 } |
| 259 | |
| 260 static void | |
| 318 | 261 cmd_measure() |
| 262 { | |
| 263 printf_P(PSTR("Measuring\n")); | |
| 264 need_measurement = 1; | |
| 265 } | |
| 266 | |
| 267 static void | |
| 268 cmd_sensors() | |
| 269 { | |
| 270 uint8_t ret = simple_ds18b20_start_meas(NULL); | |
| 320 | 271 printf_P(PSTR("All sensors, ret %d, waiting...\n"), ret); |
| 272 long_delay(DS18B20_TCONV_12BIT); | |
| 318 | 273 simple_ds18b20_read_all(); |
| 274 } | |
| 275 | |
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276 #if 0 |
| 319 | 277 // 0 on success |
| 278 static uint8_t | |
| 279 get_hex_string(const char *hex, uint8_t *out, uint8_t size) | |
| 280 { | |
| 281 uint8_t upper; | |
| 282 uint8_t o; | |
| 283 for (uint8_t i = 0, z = 0; o < size; i++) | |
| 284 { | |
| 285 uint8_t h = hex[i]; | |
| 286 if (h >= 'A' && h <= 'F') | |
| 287 { | |
| 288 // lower case | |
| 289 h += 0x20; | |
| 290 } | |
| 291 uint8_t nibble; | |
| 292 if (h >= '0' && h <= '9') | |
| 293 { | |
| 294 nibble = h - '0'; | |
| 295 } | |
| 296 else if (h >= 'a' && h <= 'f') | |
| 297 { | |
| 298 nibble = 10 + h - 'a'; | |
| 299 } | |
| 300 else if (h == ' ' || h == ':') | |
| 301 { | |
| 302 continue; | |
| 303 } | |
| 304 else | |
| 305 { | |
| 306 printf_P(PSTR("Bad hex 0x%x '%c'\n"), hex[i], hex[i]); | |
| 307 return 1; | |
| 308 } | |
| 309 | |
| 310 if (z % 2 == 0) | |
| 311 { | |
| 312 upper = nibble << 4; | |
| 313 } | |
| 314 else | |
| 315 { | |
| 316 out[o] = upper | nibble; | |
| 317 o++; | |
| 318 } | |
| 319 | |
| 320 z++; | |
| 321 } | |
| 322 | |
| 323 if (o != size) | |
| 324 { | |
| 325 printf_P(PSTR("Short hex\n")); | |
| 326 return 1; | |
| 327 } | |
| 328 return 0; | |
| 329 } | |
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330 #endif |
| 319 | 331 |
| 332 static void | |
| 333 add_sensor(uint8_t *id) | |
| 334 { | |
| 335 uint8_t n; | |
| 336 eeprom_read(n, n_sensors); | |
| 337 if (n < MAX_SENSORS) | |
| 338 { | |
| 339 cli(); | |
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340 eeprom_write_from(id, sensor_id[n], ID_LEN); |
| 319 | 341 n++; |
| 342 eeprom_write(n, n_sensors); | |
| 343 sei(); | |
| 344 printf_P(PSTR("Added sensor %d : "), n); | |
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345 printhex(id, ID_LEN, stdout); |
| 319 | 346 putchar('\n'); |
| 347 } | |
| 348 else | |
| 349 { | |
| 350 printf_P(PSTR("Too many sensors\n")); | |
| 351 } | |
| 352 } | |
| 353 | |
| 354 static void | |
| 355 cmd_add_all() | |
| 356 { | |
| 357 uint8_t id[OW_ROMCODE_SIZE]; | |
| 358 printf_P("Adding all\n"); | |
| 359 ow_reset(); | |
| 360 for( uint8_t diff = OW_SEARCH_FIRST; diff != OW_LAST_DEVICE; ) | |
| 361 { | |
| 362 diff = ow_rom_search( diff, &id[0] ); | |
| 363 if( diff == OW_PRESENCE_ERR ) { | |
| 364 printf_P( PSTR("No Sensor found\r") ); | |
| 365 return; | |
| 366 } | |
| 367 | |
| 368 if( diff == OW_DATA_ERR ) { | |
| 369 printf_P( PSTR("Bus Error\r") ); | |
| 370 return; | |
| 371 } | |
| 372 add_sensor(id); | |
| 373 } | |
| 374 } | |
| 375 | |
| 376 static void | |
| 377 cmd_init() | |
| 378 { | |
| 379 printf_P(PSTR("Resetting sensor list\n")); | |
| 380 uint8_t zero = 0; | |
| 381 cli(); | |
| 382 eeprom_write(zero, n_sensors); | |
| 383 sei(); | |
| 384 printf_P(PSTR("Done.\n")); | |
| 385 } | |
| 386 | |
| 387 static void | |
| 323 | 388 cmd_settime(const char *str) |
| 389 { | |
| 390 clock_epoch = strtoul(str, NULL, 10); | |
| 391 printf_P(PSTR("Time set to %lu\n"), clock_epoch); | |
| 392 } | |
| 393 | |
| 394 static void | |
| 319 | 395 check_first_startup() |
| 396 { | |
| 397 uint16_t magic; | |
| 398 eeprom_read(magic, magic); | |
| 399 if (magic != EXPECT_MAGIC) | |
| 400 { | |
| 401 printf_P(PSTR("First boot, looking for sensors...\n")); | |
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402 // in case of power fumbles don't want to reset during eeprom write, |
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403 long_delay(2); |
| 319 | 404 cmd_init(); |
| 405 cmd_add_all(); | |
| 320 | 406 cli(); |
| 407 magic = EXPECT_MAGIC; | |
| 408 eeprom_write(magic, magic); | |
| 409 sei(); | |
| 319 | 410 } |
| 411 } | |
| 412 | |
| 318 | 413 static void |
| 306 | 414 read_handler() |
| 415 { | |
| 312 | 416 if (strcmp_P(readbuf, PSTR("fetch")) == 0) |
| 306 | 417 { |
| 418 cmd_fetch(); | |
| 419 } | |
| 312 | 420 else if (strcmp_P(readbuf, PSTR("clear")) == 0) |
| 306 | 421 { |
| 422 cmd_clear(); | |
| 423 } | |
| 312 | 424 else if (strcmp_P(readbuf, PSTR("btoff")) == 0) |
| 306 | 425 { |
| 426 cmd_btoff(); | |
| 427 } | |
| 318 | 428 else if (strcmp_P(readbuf, PSTR("measure")) == 0) |
| 429 { | |
| 430 cmd_measure(); | |
| 431 } | |
| 432 else if (strcmp_P(readbuf, PSTR("sensors")) == 0) | |
| 433 { | |
| 434 cmd_sensors(); | |
| 435 } | |
| 319 | 436 else if (strcmp_P(readbuf, PSTR("addall"))== 0) |
| 437 { | |
| 438 cmd_add_all(); | |
| 439 } | |
| 323 | 440 else if (strncmp_P(readbuf, PSTR("settime "), |
| 441 strlen("settime ") == 0)) | |
| 442 { | |
| 443 cmd_settime(&readbuf[strlen("settime ")]); | |
| 444 } | |
| 319 | 445 else if (strcmp_P(readbuf, PSTR("init")) == 0) |
| 446 { | |
| 447 cmd_init(); | |
| 448 } | |
| 306 | 449 else |
| 450 { | |
| 312 | 451 printf_P(PSTR("Bad command\n")); |
| 306 | 452 } |
| 453 } | |
| 454 | |
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455 ISR(INT0_vect) |
| 324 | 456 { |
| 457 need_comms = 1; | |
| 458 } | |
| 459 | |
| 460 | |
| 308 | 461 ISR(USART_RX_vect) |
| 306 | 462 { |
| 308 | 463 char c = UDR0; |
| 318 | 464 uart_putchar(c, NULL); |
| 465 if (c == '\r') | |
| 306 | 466 { |
| 467 readbuf[readpos] = '\0'; | |
| 468 read_handler(); | |
| 469 readpos = 0; | |
| 470 } | |
| 471 else | |
| 472 { | |
| 473 readbuf[readpos] = c; | |
| 474 readpos++; | |
| 475 if (readpos >= sizeof(readbuf)) | |
| 476 { | |
| 477 readpos = 0; | |
| 478 } | |
| 479 } | |
| 480 } | |
| 481 | |
| 308 | 482 ISR(TIMER2_COMPA_vect) |
| 307 | 483 { |
| 320 | 484 TCNT2 = 0; |
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485 measure_count ++; |
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486 comms_count ++; |
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487 |
| 323 | 488 clock_epoch ++; |
| 489 | |
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490 if (comms_timeout != 0) |
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491 { |
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492 comms_timeout--; |
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493 } |
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494 |
| 320 | 495 if (measure_count >= MEASURE_WAKE) |
| 307 | 496 { |
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497 measure_count = 0; |
| 307 | 498 need_measurement = 1; |
| 499 } | |
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500 |
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501 if (comms_count >= COMMS_WAKE) |
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502 { |
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503 comms_count = 0; |
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504 need_comms = 1; |
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505 } |
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506 |
| 307 | 507 } |
| 508 | |
| 309 | 509 DWORD get_fattime (void) |
| 510 { | |
| 511 return 0; | |
| 512 } | |
| 513 | |
| 307 | 514 static void |
| 515 deep_sleep() | |
| 516 { | |
| 517 // p119 of manual | |
| 308 | 518 OCR2A = SLEEP_COMPARE; |
| 519 loop_until_bit_is_clear(ASSR, OCR2AUB); | |
| 307 | 520 |
| 521 set_sleep_mode(SLEEP_MODE_PWR_SAVE); | |
| 522 sleep_mode(); | |
| 523 } | |
| 524 | |
| 525 static void | |
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526 idle_sleep() |
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527 { |
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528 set_sleep_mode(SLEEP_MODE_IDLE); |
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529 sleep_mode(); |
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530 } |
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531 |
| 320 | 532 #if 0 |
| 533 // untested | |
| 312 | 534 static void |
| 535 do_adc_335() | |
| 536 { | |
| 314 | 537 //PRR &= ~_BV(PRADC); |
| 312 | 538 |
| 539 ADMUX = _BV(ADLAR); | |
| 540 | |
| 541 // ADPS2 = /16 prescaler, 62khz at 1mhz clock | |
| 542 ADCSRA = _BV(ADEN) | _BV(ADPS2); | |
| 543 | |
| 544 // measure value | |
| 545 ADCSRA |= _BV(ADSC); | |
| 546 loop_until_bit_is_clear(ADCSRA, ADSC); | |
| 547 uint8_t low = ADCL; | |
| 548 uint8_t high = ADCH; | |
| 549 uint16_t f_measure = low + (high << 8); | |
| 550 | |
| 551 // set to measure 1.1 reference | |
| 552 ADMUX = _BV(ADLAR) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1); | |
| 553 ADCSRA |= _BV(ADSC); | |
| 554 loop_until_bit_is_clear(ADCSRA, ADSC); | |
| 555 uint8_t low_11 = ADCL; | |
| 556 uint8_t high_11 = ADCH; | |
| 557 uint16_t f_11 = low_11 + (high_11 << 8); | |
| 558 | |
| 559 float res_volts = 1.1 * f_measure / f_11; | |
| 560 | |
| 561 // 10mV/degree | |
| 562 // scale to 1/5 degree units above 0C | |
| 563 int temp = (res_volts - 2.73) * 500; | |
| 319 | 564 // XXX fixme |
| 565 //measurements[n_measurements] = temp; | |
| 312 | 566 // XXX something if it hits the limit |
| 567 | |
| 568 // measure AVR internal temperature against 1.1 ref. | |
| 569 ADMUX = _BV(ADLAR) | _BV(MUX3) | _BV(REFS1) | _BV(REFS0); | |
| 570 ADCSRA |= _BV(ADSC); | |
| 571 loop_until_bit_is_clear(ADCSRA, ADSC); | |
| 572 uint16_t res_internal = ADCL; | |
| 573 res_internal |= ADCH << 8; | |
| 574 | |
| 575 float internal_volts = res_internal * (1.1 / 1024.0); | |
| 576 | |
| 577 // 1mV/degree | |
| 578 int internal_temp = (internal_volts - 2.73) * 5000; | |
| 319 | 579 // XXX fixme |
| 580 //internal_measurements[n_measurements] = internal_temp; | |
| 312 | 581 |
| 582 printf_P("measure %d: external %d, internal %d, 1.1 %d\n", | |
| 583 n_measurements, temp, internal_temp, f_11); | |
| 584 | |
| 585 n_measurements++; | |
| 314 | 586 //PRR |= _BV(PRADC); |
| 312 | 587 } |
| 320 | 588 #endif |
| 312 | 589 |
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590 static void |
| 307 | 591 do_measurement() |
| 592 { | |
| 319 | 593 uint8_t n_sensors; |
| 320 | 594 printf("do_measurement\n"); |
| 319 | 595 eeprom_read(n_sensors, n_sensors); |
| 320 | 596 printf("do_measurement sensors %d\n", n_sensors); |
| 319 | 597 |
| 598 uint8_t ret = simple_ds18b20_start_meas(NULL); | |
| 320 | 599 printf_P(PSTR("Read all sensors, ret %d, waiting...\n"), ret); |
| 319 | 600 _delay_ms(DS18B20_TCONV_12BIT); |
| 601 | |
| 602 if (n_measurements == NUM_MEASUREMENTS) | |
| 603 { | |
| 320 | 604 printf_P(PSTR("Measurements .overflow\n")); |
| 319 | 605 n_measurements = 0; |
| 606 } | |
| 312 | 607 |
| 320 | 608 for (uint8_t s = 0; s < MAX_SENSORS; s++) |
| 319 | 609 { |
| 610 int16_t decicelsius; | |
| 320 | 611 if (s >= n_sensors) |
| 319 | 612 { |
| 613 decicelsius = VALUE_NOSENSOR; | |
| 614 } | |
| 615 else | |
| 616 { | |
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617 uint8_t id[ID_LEN]; |
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618 eeprom_read_to(id, sensor_id[s], ID_LEN); |
| 319 | 619 |
| 620 uint8_t ret = simple_ds18b20_read_decicelsius(id, &decicelsius); | |
| 621 if (ret != DS18X20_OK) | |
| 622 { | |
| 623 decicelsius = VALUE_BROKEN; | |
| 624 } | |
| 625 } | |
| 320 | 626 measurements[n_measurements][s] = decicelsius; |
| 319 | 627 } |
| 320 | 628 n_measurements++; |
| 318 | 629 //do_adc_335(); |
| 307 | 630 } |
| 631 | |
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632 static void |
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633 do_comms() |
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634 { |
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635 // turn on bluetooth |
| 313 | 636 uart_on(); |
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637 |
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638 // write sd card here? same 3.3v regulator... |
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639 |
| 318 | 640 printf("ready> \n"); |
| 641 | |
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642 for (comms_timeout = WAKE_SECS; comms_timeout > 0; ) |
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643 { |
| 312 | 644 if (need_measurement) |
| 645 { | |
| 320 | 646 need_measurement = 0; |
| 647 printf("measure from do_comms\n"); | |
| 312 | 648 do_measurement(); |
| 649 } | |
| 650 | |
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651 // wait for commands from the master |
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652 idle_sleep(); |
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653 } |
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654 |
| 312 | 655 uart_off(); |
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656 set_aux_power(0); |
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657 } |
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658 |
| 313 | 659 static void |
| 660 blink() | |
| 661 { | |
| 662 PORT_LED &= ~_BV(PIN_LED); | |
| 315 | 663 _delay_ms(1); |
| 313 | 664 PORT_LED |= _BV(PIN_LED); |
| 665 } | |
| 666 | |
| 667 static void | |
| 668 long_delay(int ms) | |
| 669 { | |
| 670 int iter = ms / 100; | |
| 671 | |
| 672 for (int i = 0; i < iter; i++) | |
| 673 { | |
| 674 _delay_ms(100); | |
| 675 } | |
| 676 } | |
| 677 | |
| 314 | 678 ISR(BADISR_vect) |
| 679 { | |
| 320 | 680 //uart_on(); |
| 314 | 681 printf_P(PSTR("Bad interrupt\n")); |
| 682 } | |
| 683 | |
| 315 | 684 |
| 306 | 685 int main(void) |
| 686 { | |
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687 setup_chip(); |
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688 blink(); |
| 315 | 689 |
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690 set_aux_power(0); |
| 313 | 691 |
| 312 | 692 stdout = &mystdout; |
| 313 | 693 uart_on(); |
| 694 | |
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695 printf(PSTR("Started.\n")); |
| 319 | 696 |
| 697 check_first_startup(); | |
| 698 | |
| 314 | 699 uart_off(); |
| 306 | 700 |
| 312 | 701 // turn off everything except timer2 |
| 314 | 702 //PRR = _BV(PRTWI) | _BV(PRTIM0) | _BV(PRTIM1) | _BV(PRSPI) | _BV(PRUSART0) | _BV(PRADC); |
| 703 | |
| 704 // for testing | |
| 705 uart_on(); | |
| 706 | |
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707 setup_tick_counter(); |
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708 |
| 318 | 709 sei(); |
| 314 | 710 |
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711 #if 0 |
| 312 | 712 for (;;) |
| 713 { | |
| 318 | 714 do_comms(); |
| 312 | 715 } |
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716 #endif |
| 318 | 717 |
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718 for(;;) |
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719 { |
| 307 | 720 if (need_measurement) |
| 721 { | |
| 320 | 722 need_measurement = 0; |
| 307 | 723 do_measurement(); |
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724 continue; |
| 307 | 725 } |
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726 |
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727 if (need_comms) |
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728 { |
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729 need_comms = 0; |
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730 do_comms(); |
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731 continue; |
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732 } |
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733 |
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734 deep_sleep(); |
| 315 | 735 blink(); |
| 316 | 736 printf("."); |
| 306 | 737 } |
| 318 | 738 |
| 306 | 739 return 0; /* never reached */ |
| 740 } |