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();
}
}
