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Support configure UART speed for ESP IDF

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This commit is contained in:
VietDzung 2025-07-30 23:27:42 +07:00
commit 49394ded41
3 changed files with 13 additions and 3 deletions
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5
examples/knx-demo-esp-idf/main/main.cpp
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@ -123,8 +123,9 @@ extern "C" void app_main(void) {
ESP_LOGI(TAG, "WiFi initialization finished.");
// Set UART pins (example: RX=16, TX=17)
knxPlatform.knxUartPins(16, 17);
// Configure UART settings
knxPlatform.knxUartPins(16, 17); // Set RX=16, TX=17
knxPlatform.knxUartBaudRate(19200); // Set baud rate (can be changed to other values like 9600, 38400, etc.)
knxPlatform.setupUart();
// Set button ISR

9
src/esp32_idf_platform.cpp
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@ -44,6 +44,12 @@ void Esp32IdfPlatform::knxUartPins(int8_t rxPin, int8_t txPin)
_txPin = txPin;
}
void Esp32IdfPlatform::knxUartBaudRate(uint32_t baudRate)
{
_baudRate = baudRate;
ESP_LOGI(KTAG, "UART baud rate set to %d", _baudRate);
}
void Esp32IdfPlatform::setNetif(esp_netif_t* netif)
{
_netif = netif;
@ -66,7 +72,7 @@ void Esp32IdfPlatform::setupUart()
return;
uart_config_t uart_config;
memset(&uart_config, 0, sizeof(uart_config));
uart_config.baud_rate = 19200;
uart_config.baud_rate = _baudRate; // Use configurable baud rate
uart_config.data_bits = UART_DATA_8_BITS;
uart_config.parity = UART_PARITY_EVEN;
uart_config.stop_bits = UART_STOP_BITS_1;
@ -77,6 +83,7 @@ void Esp32IdfPlatform::setupUart()
ESP_ERROR_CHECK(uart_param_config(_uart_num, &uart_config));
ESP_ERROR_CHECK(uart_set_pin(_uart_num, _txPin, _rxPin, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE));
_uart_installed = true;
ESP_LOGI(KTAG, "UART initialized with baud rate %d", _baudRate);
}
void Esp32IdfPlatform::closeUart()

2
src/esp32_idf_platform.h
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@ -18,6 +18,7 @@ class Esp32IdfPlatform : public Platform
// uart
void knxUartPins(int8_t rxPin, int8_t txPin);
void knxUartBaudRate(uint32_t baudRate); // Add baud rate configuration
// Call this after WiFi/Ethernet has started and received an IP.
void setNetif(esp_netif_t* netif);
@ -74,6 +75,7 @@ class Esp32IdfPlatform : public Platform
uart_port_t _uart_num;
int8_t _rxPin = -1;
int8_t _txPin = -1;
uint32_t _baudRate = 19200; // Default baud rate, can be changed
bool _uart_installed = false;
// NVS (for EEPROM emulation)