void HardwareSerial::begin(unsigned long baud, uint32_t config, int8_t rxPin, int8_t txPin, bool invert, unsigned long timeout_ms)
{
if(0 > _uart_nr || _uart_nr > 2) {
log_e("Serial number is invalid, please use 0, 1 or 2");
return;
}
if(_uart) {
end();
}
if(_uart_nr == 0 && rxPin < 0 && txPin < 0) {
rxPin = 3;
txPin = 1;
}
if(_uart_nr == 1 && rxPin < 0 && txPin < 0) {
rxPin = RX1;
txPin = TX1;
}
if(_uart_nr == 2 && rxPin < 0 && txPin < 0) {
rxPin = RX2;
txPin = TX2;
}
_uart = uartBegin(_uart_nr, baud ? baud : 9600, config, rxPin, txPin, 256, invert);
if(!baud) {
time_t startMillis = millis();
unsigned long detectedBaudRate = 0;
while(millis() - startMillis < timeout_ms && !(detectedBaudRate = uartDetectBaudrate(_uart))) {
yield();
}
end();
if(detectedBaudRate) {
delay(100); // Give some time...
_uart = uartBegin(_uart_nr, detectedBaudRate, config, rxPin, txPin, 256, invert);
} else {
log_e("Could not detect baudrate. Serial data at the port must be present within the timeout for detection to be possible");
_uart = NULL;
}
}
}
int main(void)
{
//Start the Uart Communication with 9600 Baud with 2 Stop Bits
uartBegin(9600);
//Reference Voltage as AVcc with external capacitor on Aref
ADMUX |= (1<<REFS0);
//Enable the ADC Interrupt Enalbe
ADCSRA |= (1<<ADIE);
//Set the Prescalar to 128
ADCSRA |= (1<<ADPS2) | (1<<ADPS1) | (1<<ADPS0);
//Enable the ADC Enable to start the ADC Converstion
ADCSRA |= (1<<ADEN);
//Enalbe the Global Interrupt
sei();
//Reads the changes in the Pin and updates the Register
ADCSRA |= (1<<ADSC);
while(1);
}
