void Device::print(unsigned int num, std::string filename)
{
print_header(filename);
print_readings(num, filename);
}
int main(void) {
uint8_t i;
//TODO: Enable watchdog.
//TODO: Define compile-switch to disable serial output.
// UART init
uart_init((UART_BAUD_SELECT((BAUD),F_OSC)));
// USB code init
// wdt_enable(WDTO_1S);
//odDebugInit();
DDRD = ~(1 << 2); /* all outputs except PD2 = INT0 */
PORTD = 0; /* no pullups on USB pins */
/* We fake an USB disconnect by pulling D+ and D- to 0 during reset. This is
* necessary if we had a watchdog reset or brownout reset to notify the host
* that it should re-enumerate the device. Otherwise the host's and device's
* concept of the device-ID would be out of sync.
*/
//DDRB = ~USBMASK; /* set all pins as outputs except USB */
//computeOutputStatus(); /* set output status before we do the delay */
usbDeviceDisconnect(); /* enforce re-enumeration, do this while interrupts are disabled! */
i = 250;
while(--i){ /* fake USB disconnect for > 500 ms */
//wdt_reset();
_delay_ms(2);
}
usbDeviceConnect();
//TCCR0 = 5; /* set prescaler to 1/1024 */
usbInit();
sei();
// Init DS18X20 Connect LED.
// Turn LED on: Pull to GND
DS18X20_STATUS_LED_DDR |= (1 << DS18X20_STATUS_LED_PIN); // Output
// search for the available sensors.
nSensors = search_sensors();
// TODO: Use LED to signal errors, i.e. CRC errors.
if (nSensors == 0)
DS18X20_STATUS_LED_PORT |= (1 << DS18X20_STATUS_LED_PIN); // Disable
else
DS18X20_STATUS_LED_PORT &= ~(1 << DS18X20_STATUS_LED_PIN); // Enable
// Print debugging header
logs_P( "\r\nUSBtemp - temperature at your fingertips\r\n" );
logs_P( "----------------------------------------\r\n" );
logi((int) nSensors);
logs_P( " DS18X20 Sensor(s) available:\r\n" );
for (i=0; i<nSensors; i++) {
logs_P("# in Bus :");
logi((int) i+1);
logs_P(" : ");
#ifdef DEBUG
DS18X20_show_id_uart( &gSensorIDs[i][0], OW_ROMCODE_SIZE );
#endif
logs_P( "\r\n" );
}
sync_read_sensors();
print_readings();
// main loop
uint32_t delay_counter=0;
enum read_state_t state=IDLE;
for(;;) {
//wdt_reset();
usbPoll();
delay_ms(MAIN_DELAY_MS);
delay_counter+=MAIN_DELAY_MS;
// statemachine
if (state == IDLE && delay_counter > READOUT_INTERVAL_MS) {
// start measurement.
async_start_read_sensors();
delay_counter=0;
state=MEASURING;
}
if (state==MEASURING && delay_counter > READOUT_WAIT_MS) {
// Read the values from the sensors.
async_finish_read_sensors();
delay_counter = 0;
state=UPDATED;
}
if (state==UPDATED) {
// print temperature on uart.
print_readings();
delay_counter = 0;
state=IDLE;
}
}
}
