arduino-esp32/cores/esp32/HardwareSerial.cpp

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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include "HardwareSerial.h"
HardwareSerial Serial(0);
HardwareSerial::HardwareSerial(int uart_nr) : _uart_nr(uart_nr), _uart(NULL) {}
void HardwareSerial::begin(unsigned long baud, uint32_t config, int8_t rxPin, int8_t txPin)
{
if(_uart_nr == 0 && rxPin < 0 && txPin < 0) {
rxPin = 3;
txPin = 1;
}
_uart = uartBegin(_uart_nr, baud, config, rxPin, txPin, 256, false);
}
void HardwareSerial::end()
{
if(uartGetDebug() == _uart_nr) {
uartSetDebug(0);
}
uartEnd(_uart);
_uart = 0;
}
void HardwareSerial::setDebugOutput(bool en)
{
if(_uart == 0) {
return;
}
if(en) {
uartSetDebug(_uart);
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} else {
if(uartGetDebug() == _uart_nr) {
uartSetDebug(0);
}
}
}
int HardwareSerial::available(void)
{
return uartAvailable(_uart);
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}
int HardwareSerial::peek(void)
{
if (available()) {
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return uartPeek(_uart);
}
return -1;
}
int HardwareSerial::read(void)
{
if(available()) {
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return uartRead(_uart);
}
return -1;
}
void HardwareSerial::flush()
{
uartFlush(_uart);
}
size_t HardwareSerial::write(uint8_t c)
{
uartWrite(_uart, c);
return 1;
}
size_t HardwareSerial::write(const uint8_t *buffer, size_t size)
{
uartWriteBuf(_uart, buffer, size);
return size;
}
HardwareSerial::operator bool() const
{
return _uart != 0;
}