void loopTempSensors(void) {
error = 0;
if ( nSensors == 0 ) {
error++;
}
if ( DS18X20_start_meas( DS18X20_POWER_PARASITE, NULL )
== DS18X20_OK) {
for ( i = 0; i < nSensors; i++ ) {
if ( DS18X20_read_maxres( &gSensorIDs[i][0], &temp_eminus4 )
== DS18X20_OK ) {
;; // we're cool - read a value.
//uart_put_temp_maxres( temp_eminus4 );
}
else {
error++;
}
}
} else {
error++;
}
if ( error ) {
nSensors = search_sensors();
//uart_put_int( (int) nSensors );
error = 0;
}
}
void measure_temp(uint8_t nSensors, int32_t* temp_eminus4)
{
uint8_t i = 0;
uint8_t result = 0;
if (DS18X20_start_meas( DS18X20_POWER_EXTERN, NULL) == DS18X20_OK)
{
_delay_ms(DS18B20_TCONV_12BIT);
for (i = 0; i < nSensors; i++)
{
vTaskSuspendAll();
result = DS18X20_read_maxres(&gSensorIDs[i][0], &temp_eminus4[i]);
xTaskResumeAll();
}
}
}
int main( void )
{
uint8_t nSensors, i;
int16_t decicelsius;
uint8_t error;
uart_init((UART_BAUD_SELECT((BAUD),F_CPU)));
#ifndef OW_ONE_BUS
ow_set_bus(&PINA,&PORTA,&DDRA,PA6);
#endif
sei();
uart_puts_P( NEWLINESTR "DS18X20 1-Wire-Reader Demo by Martin Thomas" NEWLINESTR );
uart_puts_P( "-------------------------------------------" );
nSensors = search_sensors();
uart_put_int( (int)nSensors );
uart_puts_P( " DS18X20 Sensor(s) available:" NEWLINESTR );
#if DS18X20_VERBOSE
for (i = 0; i < nSensors; i++ ) {
uart_puts_P("# in Bus :");
uart_put_int( (int)i + 1);
uart_puts_P(" : ");
DS18X20_show_id_uart( &gSensorIDs[i][0], OW_ROMCODE_SIZE );
uart_puts_P( NEWLINESTR );
}
#endif
for ( i = 0; i < nSensors; i++ ) {
uart_puts_P( "Sensor# " );
uart_put_int( (int)i+1 );
uart_puts_P( " is a " );
if ( gSensorIDs[i][0] == DS18S20_FAMILY_CODE ) {
uart_puts_P( "DS18S20/DS1820" );
} else if ( gSensorIDs[i][0] == DS1822_FAMILY_CODE ) {
uart_puts_P( "DS1822" );
}
else {
uart_puts_P( "DS18B20" );
}
uart_puts_P( " which is " );
if ( DS18X20_get_power_status( &gSensorIDs[i][0] ) == DS18X20_POWER_PARASITE ) {
uart_puts_P( "parasite" );
} else {
uart_puts_P( "externally" );
}
uart_puts_P( " powered" NEWLINESTR );
}
#if DS18X20_EEPROMSUPPORT
if ( nSensors > 0 ) {
eeprom_test();
}
#endif
if ( nSensors == 1 ) {
uart_puts_P( NEWLINESTR "There is only one sensor "
"-> Demo of \"DS18X20_read_decicelsius_single\":" NEWLINESTR );
i = gSensorIDs[0][0]; // family-code for conversion-routine
DS18X20_start_meas( DS18X20_POWER_PARASITE, NULL );
_delay_ms( DS18B20_TCONV_12BIT );
DS18X20_read_decicelsius_single( i, &decicelsius );
uart_put_temp( decicelsius );
uart_puts_P( NEWLINESTR );
}
for(;;) { // main loop
error = 0;
if ( nSensors == 0 ) {
error++;
}
uart_puts_P( NEWLINESTR "Convert_T and Read Sensor by Sensor (reverse order)" NEWLINESTR );
for ( i = nSensors; i > 0; i-- ) {
if ( DS18X20_start_meas( DS18X20_POWER_PARASITE,
&gSensorIDs[i-1][0] ) == DS18X20_OK ) {
_delay_ms( DS18B20_TCONV_12BIT );
uart_puts_P( "Sensor# " );
uart_put_int( (int) i );
uart_puts_P(" = ");
if ( DS18X20_read_decicelsius( &gSensorIDs[i-1][0], &decicelsius)
== DS18X20_OK ) {
uart_put_temp( decicelsius );
} else {
uart_puts_P( "CRC Error (lost connection?)" );
error++;
}
uart_puts_P( NEWLINESTR );
}
else {
uart_puts_P( "Start meas. failed (short circuit?)" );
error++;
}
}
uart_puts_P( NEWLINESTR "Convert_T for all Sensors and Read Sensor by Sensor" NEWLINESTR );
if ( DS18X20_start_meas( DS18X20_POWER_PARASITE, NULL )
== DS18X20_OK) {
_delay_ms( DS18B20_TCONV_12BIT );
for ( i = 0; i < nSensors; i++ ) {
uart_puts_P( "Sensor# " );
uart_put_int( (int)i + 1 );
uart_puts_P(" = ");
if ( DS18X20_read_decicelsius( &gSensorIDs[i][0], &decicelsius )
== DS18X20_OK ) {
uart_put_temp( decicelsius );
}
else {
uart_puts_P( "CRC Error (lost connection?)" );
error++;
}
uart_puts_P( NEWLINESTR );
}
#if DS18X20_MAX_RESOLUTION
int32_t temp_eminus4;
for ( i = 0; i < nSensors; i++ ) {
uart_puts_P( "Sensor# " );
uart_put_int( i+1 );
uart_puts_P(" = ");
if ( DS18X20_read_maxres( &gSensorIDs[i][0], &temp_eminus4 )
== DS18X20_OK ) {
uart_put_temp_maxres( temp_eminus4 );
}
else {
uart_puts_P( "CRC Error (lost connection?)" );
error++;
}
uart_puts_P( NEWLINESTR );
}
#endif
}
else {
uart_puts_P( "Start meas. failed (short circuit?)" );
error++;
}
#if DS18X20_VERBOSE
// all devices:
uart_puts_P( NEWLINESTR "Verbose output" NEWLINESTR );
DS18X20_start_meas( DS18X20_POWER_PARASITE, NULL );
_delay_ms( DS18B20_TCONV_12BIT );
DS18X20_read_meas_all_verbose();
#endif
if ( error ) {
uart_puts_P( "*** problems - rescanning bus ..." );
nSensors = search_sensors();
uart_put_int( (int) nSensors );
uart_puts_P( " DS18X20 Sensor(s) available" NEWLINESTR );
error = 0;
}
_delay_ms(3000);
}
}
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();
}
}