mirror of
https://github.com/espressif/arduino-esp32
synced 2024-09-21 10:28:04 +00:00
UART: fixes begin() after a previous begin() :: deleting previous RX/TX buffers and its data (#9095)
* UART: fixes begin() * Typo: fixes typos and some testing left over * feat: fixes end() * feat: adjust internal baurate * feat: Changes CI [HardwareSerial] [HardwareSerial]: Changes CI to match new HardwareSerial begin() and end() * feat: fixes auto_baudrate_test [uart]: fixes end(void) instead of end(bool) * feat: adjust copyright year [fix]: adjust commentary of the copyright year
This commit is contained in:
parent
50f436c6fc
commit
60395ed6e7
@ -114,7 +114,7 @@ _eventTask(NULL)
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HardwareSerial::~HardwareSerial()
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{
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end(true); // explicit Full UART termination
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end(); // explicit Full UART termination
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#if !CONFIG_DISABLE_HAL_LOCKS
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if(_lock != NULL){
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vSemaphoreDelete(_lock);
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@ -329,16 +329,22 @@ void HardwareSerial::begin(unsigned long baud, uint32_t config, int8_t rxPin, in
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// map logical pins to GPIO numbers
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rxPin = digitalPinToGPIONumber(rxPin);
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txPin = digitalPinToGPIONumber(txPin);
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// IDF UART driver keeps Pin setting on restarting. Negative Pin number will keep it unmodified.
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// it will detach previous UART attached pins
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if(_uart) {
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// in this case it is a begin() over a previous begin() - maybe to change baud rate
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// thus do not disable debug output
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end(false); // disables IDF UART driver and UART event Task + sets _uart to NULL
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// indicates that uartbegin() has to initilize a new IDF driver
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if (_testUartBegin(_uart_nr, baud ? baud : 9600, config, rxPin, txPin, _rxBufferSize, _txBufferSize, invert, rxfifo_full_thrhd)) {
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_destroyEventTask(); // when IDF uart driver must be restarted, _eventTask must finish too
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}
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// IDF UART driver keeps Pin setting on restarting. Negative Pin number will keep it unmodified.
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// it will detach previous UART attached pins
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_uart = uartBegin(_uart_nr, baud ? baud : 9600, config, rxPin, txPin, _rxBufferSize, _txBufferSize, invert, rxfifo_full_thrhd);
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if (_uart == NULL) {
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log_e("UART driver failed to start. Please check the logs.");
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HSERIAL_MUTEX_UNLOCK();
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return;
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}
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if (!baud) {
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// using baud rate as zero, forces it to try to detect the current baud rate in place
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uartStartDetectBaudrate(_uart);
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@ -348,11 +354,14 @@ void HardwareSerial::begin(unsigned long baud, uint32_t config, int8_t rxPin, in
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yield();
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}
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end(false); // disables IDF UART driver and UART event Task + sets _uart to NULL
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if(detectedBaudRate) {
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delay(100); // Give some time...
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_uart = uartBegin(_uart_nr, detectedBaudRate, config, rxPin, txPin, _rxBufferSize, _txBufferSize, invert, rxfifo_full_thrhd);
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if (_uart == NULL) {
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log_e("UART driver failed to start. Please check the logs.");
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HSERIAL_MUTEX_UNLOCK();
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return;
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}
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} else {
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log_e("Could not detect baudrate. Serial data at the port must be present within the timeout for detection to be possible");
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_uart = NULL;
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@ -389,22 +398,17 @@ void HardwareSerial::updateBaudRate(unsigned long baud)
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uartSetBaudRate(_uart, baud);
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}
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void HardwareSerial::end(bool fullyTerminate)
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void HardwareSerial::end()
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{
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// default Serial.end() will completely disable HardwareSerial,
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// including any tasks or debug message channel (log_x()) - but not for IDF log messages!
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if(fullyTerminate) {
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_onReceiveCB = NULL;
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_onReceiveErrorCB = NULL;
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if (uartGetDebug() == _uart_nr) {
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uartSetDebug(0);
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}
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_rxFIFOFull = 0;
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uartEnd(_uart_nr); // fully detach all pins and delete the UART driver
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} else {
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// do not invalidate callbacks, detach pins, invalidate DBG output
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uart_driver_delete(_uart_nr);
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_onReceiveCB = NULL;
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_onReceiveErrorCB = NULL;
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if (uartGetDebug() == _uart_nr) {
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uartSetDebug(0);
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}
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_rxFIFOFull = 0;
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uartEnd(_uart_nr); // fully detach all pins and delete the UART driver
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_destroyEventTask(); // when IDF uart driver is deleted, _eventTask must finish too
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_uart = NULL;
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}
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@ -564,3 +568,4 @@ size_t HardwareSerial::setTxBufferSize(size_t new_size) {
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_txBufferSize = new_size;
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return _txBufferSize;
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}
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@ -252,7 +252,7 @@ public:
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// invert will invert RX/TX polarity
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// rxfifo_full_thrhd if the UART Flow Control Threshold in the UART FIFO (max 127)
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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, uint8_t rxfifo_full_thrhd = 112);
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void end(bool fullyTerminate = true);
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void end(void);
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void updateBaudRate(unsigned long baud);
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int available(void);
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int availableForWrite(void);
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@ -1,4 +1,4 @@
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// Copyright 2015-2023 Espressif Systems (Shanghai) PTE LTD
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// Copyright 2015-2024 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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@ -33,19 +33,25 @@
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#include "hal/gpio_hal.h"
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#include "esp_rom_gpio.h"
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static int s_uart_debug_nr = 0;
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static int s_uart_debug_nr = 0; // UART number for debug output
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struct uart_struct_t {
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#if !CONFIG_DISABLE_HAL_LOCKS
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SemaphoreHandle_t lock;
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SemaphoreHandle_t lock; // UART lock
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#endif
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uint8_t num;
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bool has_peek;
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uint8_t peek_byte;
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QueueHandle_t uart_event_queue; // export it by some uartGetEventQueue() function
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int8_t _rxPin, _txPin, _ctsPin, _rtsPin; // UART GPIOs
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uint8_t num; // UART number for IDF driver API
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bool has_peek; // flag to indicate that there is a peek byte pending to be read
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uint8_t peek_byte; // peek byte that has been read but not consumed
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QueueHandle_t uart_event_queue; // export it by some uartGetEventQueue() function
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// configuration data:: Arduino API tipical data
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int8_t _rxPin, _txPin, _ctsPin, _rtsPin; // UART GPIOs
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uint32_t _baudrate, _config; // UART baudrate and config
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// UART ESP32 specific data
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uint16_t _rx_buffer_size, _tx_buffer_size; // UART RX and TX buffer sizes
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bool _inverted; // UART inverted signal
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uint8_t _rxfifo_full_thrhd; // UART RX FIFO full threshold
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};
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#if CONFIG_DISABLE_HAL_LOCKS
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@ -54,12 +60,12 @@ struct uart_struct_t {
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#define UART_MUTEX_UNLOCK()
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static uart_t _uart_bus_array[] = {
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{0, false, 0, NULL, -1, -1, -1, -1},
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{0, false, 0, NULL, -1, -1, -1, -1, 0, 0, 0, 0, false, 0},
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#if SOC_UART_NUM > 1
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{1, false, 0, NULL, -1, -1, -1, -1},
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{1, false, 0, NULL, -1, -1, -1, -1, 0, 0, 0, 0, false, 0},
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#endif
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#if SOC_UART_NUM > 2
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{2, false, 0, NULL, -1, -1, -1, -1},
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{2, false, 0, NULL, -1, -1, -1, -1, 0, 0, 0, 0, false, 0},
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#endif
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};
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@ -69,12 +75,12 @@ static uart_t _uart_bus_array[] = {
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#define UART_MUTEX_UNLOCK() if(uart->lock != NULL) xSemaphoreGive(uart->lock)
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static uart_t _uart_bus_array[] = {
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{NULL, 0, false, 0, NULL, -1, -1, -1, -1},
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{NULL, 0, false, 0, NULL, -1, -1, -1, -1, 0, 0, 0, 0, false, 0},
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#if SOC_UART_NUM > 1
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{NULL, 1, false, 0, NULL, -1, -1, -1, -1},
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{NULL, 1, false, 0, NULL, -1, -1, -1, -1, 0, 0, 0, 0, false, 0},
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#endif
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#if SOC_UART_NUM > 2
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{NULL, 2, false, 0, NULL, -1, -1, -1, -1},
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{NULL, 2, false, 0, NULL, -1, -1, -1, -1, 0, 0, 0, 0, false, 0},
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#endif
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};
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@ -97,7 +103,12 @@ static bool _uartDetachPins(uint8_t uart_num, int8_t rxPin, int8_t txPin, int8_t
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// detaches pins and sets Peripheral Manager and UART information
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if (rxPin >= 0 && uart->_rxPin == rxPin && perimanGetPinBusType(rxPin) == ESP32_BUS_TYPE_UART_RX) {
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gpio_hal_iomux_func_sel(GPIO_PIN_MUX_REG[rxPin], PIN_FUNC_GPIO);
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esp_rom_gpio_connect_in_signal(GPIO_FUNC_IN_LOW, UART_PERIPH_SIGNAL(uart_num, SOC_UART_RX_PIN_IDX), false);
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// avoids causing BREAK in the UART line
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if (uart->_inverted) {
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esp_rom_gpio_connect_in_signal(GPIO_FUNC_IN_LOW, UART_PERIPH_SIGNAL(uart_num, SOC_UART_RX_PIN_IDX), false);
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} else {
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esp_rom_gpio_connect_in_signal(GPIO_FUNC_IN_HIGH, UART_PERIPH_SIGNAL(uart_num, SOC_UART_RX_PIN_IDX), false);
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}
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uart->_rxPin = -1; // -1 means unassigned/detached
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if (!perimanClearPinBus(rxPin)) {
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retCode = false;
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@ -355,28 +366,121 @@ bool uartSetHwFlowCtrlMode(uart_t *uart, uart_hw_flowcontrol_t mode, uint8_t thr
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return retCode;
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}
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// This helper function will return true if a new IDF UART driver needs to be restarted and false if the current one can continue its execution
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bool _testUartBegin(uint8_t uart_nr, uint32_t baudrate, uint32_t config, int8_t rxPin, int8_t txPin, uint16_t rx_buffer_size, uint16_t tx_buffer_size, bool inverted, uint8_t rxfifo_full_thrhd)
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{
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if(uart_nr >= SOC_UART_NUM) {
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return false; // no new driver has to be installed
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}
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uart_t* uart = &_uart_bus_array[uart_nr];
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// verify if is necessary to restart the UART driver
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if (uart_is_driver_installed(uart_nr)) {
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// some parameters can't be changed unless we end the UART driver
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if ( uart->_rx_buffer_size != rx_buffer_size || uart->_tx_buffer_size != tx_buffer_size || uart->_inverted != inverted || uart->_rxfifo_full_thrhd != rxfifo_full_thrhd) {
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return true; // the current IDF UART driver must be terminated and a new driver shall be installed
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} else {
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return false; // The current IDF UART driver can continue its execution
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}
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} else {
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return true; // no IDF UART driver is running and a new driver shall be installed
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}
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}
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uart_t* uartBegin(uint8_t uart_nr, uint32_t baudrate, uint32_t config, int8_t rxPin, int8_t txPin, uint16_t rx_buffer_size, uint16_t tx_buffer_size, bool inverted, uint8_t rxfifo_full_thrhd)
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{
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if(uart_nr >= SOC_UART_NUM) {
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return NULL;
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log_e("UART number is invalid, please use number from 0 to %u", SOC_UART_NUM - 1);
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return NULL; // no new driver was installed
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}
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uart_t* uart = &_uart_bus_array[uart_nr];
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if (uart_is_driver_installed(uart_nr)) {
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uartEnd(uart_nr);
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}
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log_v("UART%d baud(%ld) Mode(%x) rxPin(%d) txPin(%d)", uart_nr, baudrate, config, rxPin, txPin);
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#if !CONFIG_DISABLE_HAL_LOCKS
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if(uart->lock == NULL) {
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uart->lock = xSemaphoreCreateMutex();
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if(uart->lock == NULL) {
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log_e("HAL LOCK error.");
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return NULL;
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return NULL; // no new driver was installed
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}
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}
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#endif
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UART_MUTEX_LOCK();
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if (uart_is_driver_installed(uart_nr)) {
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log_v("UART%d Driver already installed.", uart_nr);
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// some parameters can't be changed unless we end the UART driver
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if ( uart->_rx_buffer_size != rx_buffer_size || uart->_tx_buffer_size != tx_buffer_size || uart->_inverted != inverted || uart->_rxfifo_full_thrhd != rxfifo_full_thrhd) {
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log_v("UART%d changing buffer sizes or inverted signal or rxfifo_full_thrhd. IDF driver will be restarted", uart_nr);
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uartEnd(uart_nr);
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} else {
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bool retCode = true;
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UART_MUTEX_LOCK();
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//User may just want to change some parameters, such as baudrate, data length, parity, stop bits or pins
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if (uart->_baudrate != baudrate) {
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if (ESP_OK != uart_set_baudrate(uart_nr, baudrate)) {
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log_e("UART%d changing baudrate failed.", uart_nr);
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retCode = false;
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} else {
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log_v("UART%d changed baudrate to %d", uart_nr, baudrate);
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uart->_baudrate = baudrate;
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}
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}
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uart_word_length_t data_bits = (config & 0xc) >> 2;
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uart_parity_t parity = config & 0x3;
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uart_stop_bits_t stop_bits = (config & 0x30) >> 4;
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if (retCode && (uart->_config & 0xc) >> 2 != data_bits) {
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if (ESP_OK != uart_set_word_length(uart_nr, data_bits)) {
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log_e("UART%d changing data length failed.", uart_nr);
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retCode = false;
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} else {
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log_v("UART%d changed data length to %d", uart_nr, data_bits + 5);
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}
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}
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if (retCode && (uart->_config & 0x3) != parity) {
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if (ESP_OK != uart_set_parity(uart_nr, parity)) {
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log_e("UART%d changing parity failed.", uart_nr);
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retCode = false;
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} else {
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log_v("UART%d changed parity to %s", uart_nr, parity == 0 ? "NONE" : parity == 2 ? "EVEN" : "ODD");
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}
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}
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if (retCode && (uart->_config & 0xc30) >> 4 != stop_bits) {
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if (ESP_OK != uart_set_stop_bits(uart_nr, stop_bits)) {
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log_e("UART%d changing stop bits failed.", uart_nr);
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retCode = false;
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} else {
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log_v("UART%d changed stop bits to %d", uart_nr, stop_bits == 3 ? 2 : 1);
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}
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}
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if (retCode) uart->_config = config;
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if (retCode && rxPin > 0 && uart->_rxPin != rxPin) {
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retCode &= _uartDetachPins(uart_nr, uart->_rxPin, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
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retCode &= _uartAttachPins(uart_nr, rxPin, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
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if (!retCode) {
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log_e("UART%d changing RX pin failed.", uart_nr);
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} else {
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log_v("UART%d changed RX pin to %d", uart_nr, rxPin);
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}
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}
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if (retCode && txPin > 0 && uart->_txPin != txPin) {
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retCode &= _uartDetachPins(uart_nr, UART_PIN_NO_CHANGE, uart->_txPin, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
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retCode &= _uartAttachPins(uart_nr, UART_PIN_NO_CHANGE, txPin, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
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if (!retCode) {
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log_e("UART%d changing TX pin failed.", uart_nr);
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} else {
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log_v("UART%d changed TX pin to %d", uart_nr, txPin);
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}
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}
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UART_MUTEX_UNLOCK();
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if (retCode) {
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// UART driver was already working, just return the uart_t structure, syaing that no new driver was installed
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return uart;
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}
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// if we reach this point, it means that we need to restart the UART driver
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uartEnd(uart_nr);
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}
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} else {
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log_v("UART%d not installed. Starting installation", uart_nr);
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}
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uart_config_t uart_config;
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uart_config.data_bits = (config & 0xc) >> 2;
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uart_config.parity = (config & 0x3);
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@ -386,7 +490,10 @@ uart_t* uartBegin(uint8_t uart_nr, uint32_t baudrate, uint32_t config, int8_t rx
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uart_config.baud_rate = baudrate;
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// CLK_APB for ESP32|S2|S3|C3 -- CLK_PLL_F40M for C2 -- CLK_PLL_F48M for H2 -- CLK_PLL_F80M for C6
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uart_config.source_clk = UART_SCLK_DEFAULT;
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UART_MUTEX_LOCK();
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bool retCode = ESP_OK == uart_driver_install(uart_nr, rx_buffer_size, tx_buffer_size, 20, &(uart->uart_event_queue), 0);
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if (retCode) retCode &= ESP_OK == uart_param_config(uart_nr, &uart_config);
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// Is it right or the idea is to swap rx and tx pins?
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@ -395,19 +502,31 @@ uart_t* uartBegin(uint8_t uart_nr, uint32_t baudrate, uint32_t config, int8_t rx
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retCode &= ESP_OK == uart_set_line_inverse(uart_nr, UART_SIGNAL_TXD_INV | UART_SIGNAL_RXD_INV);
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}
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if (retCode) {
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uart->_baudrate = baudrate;
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uart->_config = config;
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uart->_inverted = inverted;
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uart->_rxfifo_full_thrhd = rxfifo_full_thrhd;
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uart->_rx_buffer_size = rx_buffer_size;
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uart->_tx_buffer_size = tx_buffer_size;
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uart->_ctsPin = -1;
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uart->_rtsPin = -1;
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uart->has_peek = false;
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uart->peek_byte = 0;
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}
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UART_MUTEX_UNLOCK();
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// uartSetPins detaches previous pins if new ones are used over a previous begin()
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if (retCode) retCode &= uartSetPins(uart_nr, rxPin, txPin, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
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if (retCode) uartFlush(uart);
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else {
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if (!retCode) {
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uartEnd(uart_nr);
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uart = NULL;
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log_e("UART%d initialization error.", uart->num);
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} else {
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uartFlush(uart);
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log_v("UART%d initialization done.", uart->num);
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}
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log_v("UART%d baud(%ld) Mode(%x) rxPin(%d) txPin(%d)", uart_nr, baudrate, config, rxPin, txPin);
|
||||
return uart;
|
||||
return uart; // a new driver was installed
|
||||
}
|
||||
|
||||
// This function code is under testing - for now just keep it here
|
||||
@ -658,6 +777,7 @@ void uartSetBaudRate(uart_t* uart, uint32_t baud_rate)
|
||||
if(uart_get_sclk_freq(UART_SCLK_DEFAULT, &sclk_freq) == ESP_OK){
|
||||
uart_ll_set_baudrate(UART_LL_GET_HW(uart->num), baud_rate, sclk_freq);
|
||||
}
|
||||
uart->_baudrate = baud_rate;
|
||||
UART_MUTEX_UNLOCK();
|
||||
}
|
||||
|
||||
@ -1025,3 +1145,4 @@ int uart_send_msg_with_break(uint8_t uartNum, uint8_t *msg, size_t msgSize)
|
||||
}
|
||||
|
||||
#endif /* SOC_UART_SUPPORTED */
|
||||
|
||||
|
@ -32,6 +32,7 @@ extern "C" {
|
||||
struct uart_struct_t;
|
||||
typedef struct uart_struct_t uart_t;
|
||||
|
||||
bool _testUartBegin(uint8_t uart_nr, uint32_t baudrate, uint32_t config, int8_t rxPin, int8_t txPin, uint16_t rx_buffer_size, uint16_t tx_buffer_size, bool inverted, uint8_t rxfifo_full_thrhd);
|
||||
uart_t* uartBegin(uint8_t uart_nr, uint32_t baudrate, uint32_t config, int8_t rxPin, int8_t txPin, uint16_t rx_buffer_size, uint16_t tx_buffer_size, bool inverted, uint8_t rxfifo_full_thrhd);
|
||||
void uartEnd(uint8_t uart_num);
|
||||
|
||||
|
@ -78,11 +78,11 @@ void start_serial(unsigned long baudrate = 115200) {
|
||||
// This function stops all the available test UARTs
|
||||
void stop_serial(bool hard_stop = false) {
|
||||
#if SOC_UART_NUM >= 2
|
||||
Serial1.end(hard_stop);
|
||||
Serial1.end(/*hard_stop*/);
|
||||
#endif
|
||||
|
||||
#if SOC_UART_NUM >= 3
|
||||
Serial2.end(hard_stop);
|
||||
Serial2.end(/*hard_stop*/);
|
||||
#endif
|
||||
}
|
||||
|
||||
@ -139,6 +139,19 @@ void task_delayed_msg(void *pvParameters) {
|
||||
// This function is automatically called by unity before each test is run
|
||||
void setUp(void) {
|
||||
start_serial(115200);
|
||||
#if SOC_UART_NUM == 2
|
||||
log_d("Setup internal loop-back from and back to Serial1 (UART1) TX >> Serial1 (UART1) RX");
|
||||
|
||||
Serial1.onReceive([]() {onReceive_cb(Serial1);});
|
||||
uart_internal_loopback(1, RX1);
|
||||
#elif SOC_UART_NUM == 3
|
||||
log_d("Setup internal loop-back between Serial1 (UART1) <<--->> Serial2 (UART2)");
|
||||
|
||||
Serial1.onReceive([]() {onReceive_cb(Serial1);});
|
||||
Serial2.onReceive([]() {onReceive_cb(Serial2);});
|
||||
uart_internal_loopback(1, RX2);
|
||||
uart_internal_loopback(2, RX1);
|
||||
#endif
|
||||
}
|
||||
|
||||
// This function is automatically called by unity after each test is run
|
||||
@ -393,7 +406,7 @@ void disabled_uart_calls_test(void) {
|
||||
|
||||
// This test checks if the pins can be changed and if the message can be transmitted and received correctly after the change
|
||||
void change_pins_test(void) {
|
||||
stop_serial();
|
||||
//stop_serial();
|
||||
|
||||
log_d("Disabling UART loopback");
|
||||
|
||||
@ -453,7 +466,7 @@ void auto_baudrate_test(void) {
|
||||
selected_serial = &Serial2;
|
||||
#endif
|
||||
|
||||
selected_serial->end(false);
|
||||
//selected_serial->end(false);
|
||||
|
||||
log_d("Starting delayed task to send message");
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user