static void eeprom_test(void) { uint8_t sp[DS18X20_SP_SIZE], th, tl; uart_puts_P( NEWLINESTR "DS18x20 EEPROM support test for first sensor" NEWLINESTR ); // DS18X20_eeprom_to_scratchpad(&gSensorIDs[0][0]); // already done at power-on th_tl_dump( sp ); th = sp[DS18X20_TH_REG]; tl = sp[DS18X20_TL_REG]; tl++; th++; DS18X20_write_scratchpad( &gSensorIDs[0][0], th, tl, DS18B20_12_BIT ); uart_puts_P( "TH+1 and TL+1 written to scratchpad" NEWLINESTR ); th_tl_dump( sp ); DS18X20_scratchpad_to_eeprom( DS18X20_POWER_PARASITE, &gSensorIDs[0][0] ); uart_puts_P( "scratchpad copied to DS18x20 EEPROM" NEWLINESTR ); DS18X20_write_scratchpad( &gSensorIDs[0][0], 0, 0, DS18B20_12_BIT ); uart_puts_P( "TH and TL in scratchpad set to 0" NEWLINESTR ); th_tl_dump( sp ); DS18X20_eeprom_to_scratchpad(&gSensorIDs[0][0]); uart_puts_P( "DS18x20 EEPROM copied back to scratchpad" NEWLINESTR ); DS18X20_read_scratchpad( &gSensorIDs[0][0], sp, DS18X20_SP_SIZE ); if ( ( th == sp[DS18X20_TH_REG] ) && ( tl == sp[DS18X20_TL_REG] ) ) { uart_puts_P( "TH and TL verified" NEWLINESTR ); } else { uart_puts_P( "verify failed" NEWLINESTR ); } th_tl_dump( sp ); }
int main(void) { uint8_t numSensors = 0, i; // unsigned long nextflash = 0; // Configure all pins as inputs with pullups initially DDRA = 0x00; PORTA = 0xff; DDRB = 0x00; PORTB = 0xff; // Serial output line DDRB |= _BV(PINB0); PORTB |= _BV(PINB0); // LED // DDRA |= _BV(PINA0); // Radio power is PA1 PORTA &= ~_BV(PINA1); DDRA |= _BV(PINA1); // Onewire power is PA2 PORTA &= ~_BV(PINA2); DDRA |= _BV(PINA2); myPutStr("Hello world\r\n"); // Various power-saving things // Disable BOD while sleeping. I hope. MCUCR |= (_BV(BODS) | _BV(BODSE)); MCUCR &= ~_BV(BODSE); MCUCR |= (_BV(BODS)); // Disable the ADC ADCSRA &= ~_BV(ADEN); // Disable the Analog Comparator ACSR |= _BV(ACD); // Disable clocking of timer1 and ADC PRR |= (_BV(PRTIM1)|_BV(PRADC)); timerInit(); wdtInit(); initInterrupts(); // Power up the Onewire bus PORTA |= _BV(PINA2); while(numSensors == 0) { myPutStr("Scanning for sensors\r\n"); numSensors = search_sensors(); myPutStr("Found "); myPutUint8(numSensors); myPutStr(" sensors\r\n"); for (i=0;i<numSensors;i++) { uint8_t j; myPutStr("Sensor "); myPutUint8(i); myPutStr(" address "); for (j=0;j<OW_ROMCODE_SIZE;j++) { myPutUint8(gSensorIDs[i][j]); } if (gSensorIDs[i][0] == DS18S20_FAMILY_CODE ) { myPutStr(" DS18S20/DS1820"); } else if ( gSensorIDs[i][0] == DS1822_FAMILY_CODE ) { myPutStr(" DS1822"); } else { myPutStr(" DS18B20"); } if ( DS18X20_get_power_status( &gSensorIDs[i][0] ) == DS18X20_POWER_PARASITE ) { myPutStr(" parasite\r\n"); } else { myPutStr(" external\r\n"); } // Enable 12 bit mode (won't do anything on DS18S20) DS18X20_write_scratchpad(&gSensorIDs[i][0], 0, 0, DS18B20_12_BIT); DS18X20_scratchpad_to_eeprom(DS18X20_get_power_status( &gSensorIDs[i][0] ),&gSensorIDs[i][0]); } } while(1) { unsigned long wakepoint; myRadioBuf_t radiobuf; //char debugbuf[10]; // if ((signed long)now - (signed long)nextflash >= 0) { // debugLedToggle(0); // nextflash = now + 1000; // } // Power up the Onewire bus PORTA |= _BV(PINA2); // Let is stabilize for a few ms wakepoint = getMillis() + 15; numSensors = search_sensors(); while (! ((signed long)getMillis() - (signed long)wakepoint >= 0)) { set_sleep_mode(SLEEP_MODE_IDLE); sleep_mode(); } if ( DS18X20_start_meas( DS18X20_POWER_PARASITE, NULL ) == DS18X20_OK) { wakepoint = getMillis() + DS18B20_TCONV_12BIT; while (! ((signed long)getMillis() - (signed long)wakepoint >= 0)) { set_sleep_mode(SLEEP_MODE_IDLE); sleep_mode(); } // Power the radio up PORTA |= _BV(PINA1); // Wakepoint set to now +100ms to allow radio to wake wakepoint = getMillis() + 100; for ( i = 0; i < numSensors; i++ ) { radiobuf.tenthousandths = -9999999L; if (DS18X20_read_maxres( &gSensorIDs[i][0], &(radiobuf.tenthousandths) ) != DS18X20_OK) { radiobuf.tenthousandths = -9999999L; } //myPutStr("Sensor "); uint8_t j; for (j=0;j<OW_ROMCODE_SIZE;j++) { radiobuf.sensid[j] = gSensorIDs[i][j]; //myPutUint8(gSensorIDs[i][j]); } //myPutStr(" = "); //sprintf(debugbuf, "%d.%d\r\n", (int)(radiobuf.tenthousandths/10000), (int)(radiobuf.tenthousandths % 10000)); //myPutStr(debugbuf); if (0 == i) { // First time around, radio not initialized while (! ((signed long)getMillis() - (signed long)wakepoint >= 0)) { set_sleep_mode(SLEEP_MODE_IDLE); sleep_mode(); } radioInit(); // No auto ack radioSetAutoAck(0); radioOpenWritingPipe(pipe); } radiobuf.tstamp = getMillis(); //myPutStr("about to radioWrite, i="); //myPutUint8(i); //myPutStr("..."); radioWrite(&radiobuf,sizeof(radiobuf)); //myPutStr("Done\r\n"); } // Power the radio down PORTA &= ~_BV(PINA1); // Plus the CE and CSN pins PORTA &= ~_BV(PINA7); PORTB &= ~_BV(PINB2); // And the onewire bus PORTA &= ~_BV(PINA2); } else { myPutStr("Error measuring sensors\n"); } //tmp = getMillis(); //radioWrite(&tmp , sizeof(unsigned long) ); // Sleep hard until WDT fires set_sleep_mode(SLEEP_MODE_PWR_DOWN); sleep_mode(); } }