233d31bed2
* Added baudrate detection to esp32-hal-uart and HardwareSerial * Solved compiler warning for uartResizeRxBuffer() * Add unit to header variable name (timeout_ms) * Reverting accidentally changed files to master * Add small delay after baudrate detection
106 lines
3.2 KiB
C++
106 lines
3.2 KiB
C++
/*
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HardwareSerial.h - Hardware serial library for Wiring
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Copyright (c) 2006 Nicholas Zambetti. All right reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Modified 28 September 2010 by Mark Sproul
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Modified 14 August 2012 by Alarus
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Modified 3 December 2013 by Matthijs Kooijman
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Modified 18 December 2014 by Ivan Grokhotkov (esp8266 platform support)
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Modified 31 March 2015 by Markus Sattler (rewrite the code for UART0 + UART1 support in ESP8266)
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Modified 25 April 2015 by Thomas Flayols (add configuration different from 8N1 in ESP8266)
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Modified 13 October 2018 by Jeroen Döll (add baudrate detection)
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Baudrate detection example usage (detection on Serial1):
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void setup() {
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Serial.begin(115200);
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delay(100);
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Serial.println();
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Serial1.begin(0, SERIAL_8N1, -1, -1, true, 11000UL); // Passing 0 for baudrate to detect it, the last parameter is a timeout in ms
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unsigned long detectedBaudRate = Serial1.baudRate();
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if(detectedBaudRate) {
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Serial.printf("Detected baudrate is %lu\n", detectedBaudRate);
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} else {
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Serial.println("No baudrate detected, Serial1 will not work!");
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}
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}
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Pay attention: the baudrate returned by baudRate() may be rounded, eg 115200 returns 115201
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*/
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#ifndef HardwareSerial_h
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#define HardwareSerial_h
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#include <inttypes.h>
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#include "Stream.h"
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#include "esp32-hal.h"
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class HardwareSerial: public Stream
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{
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public:
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HardwareSerial(int uart_nr);
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void begin(unsigned long baud, uint32_t config=SERIAL_8N1, int8_t rxPin=-1, int8_t txPin=-1, bool invert=false, unsigned long timeout_ms = 20000UL);
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void end();
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int available(void);
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int availableForWrite(void);
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int peek(void);
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int read(void);
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void flush(void);
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size_t write(uint8_t);
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size_t write(const uint8_t *buffer, size_t size);
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inline size_t write(const char * s)
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{
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return write((uint8_t*) s, strlen(s));
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}
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inline size_t write(unsigned long n)
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{
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return write((uint8_t) n);
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}
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inline size_t write(long n)
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{
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return write((uint8_t) n);
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}
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inline size_t write(unsigned int n)
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{
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return write((uint8_t) n);
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}
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inline size_t write(int n)
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{
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return write((uint8_t) n);
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}
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uint32_t baudRate();
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operator bool() const;
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size_t setRxBufferSize(size_t);
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void setDebugOutput(bool);
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protected:
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int _uart_nr;
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uart_t* _uart;
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};
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#if !defined(NO_GLOBAL_INSTANCES) && !defined(NO_GLOBAL_SERIAL)
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extern HardwareSerial Serial;
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extern HardwareSerial Serial1;
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extern HardwareSerial Serial2;
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#endif
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#endif
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