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fix for #3258

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proddy
2026-10-12 19:37:45 +02:00
parent 77ede5cea2
commit 721866c528
1 changed files with 4 additions and 0 deletions
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src/uart/emsuart_esp32.cpp
+4
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@@ -91,6 +91,9 @@ void EMSuart::start(const uint8_t tx_mode, const uint8_t rx_gpio, const uint8_t
inverse_mask |= UART_SIGNAL_TXD_INV;
#endif
uart_param_config(EMSUART_NUM, &uart_config);
// IDF 5 uart_set_pin() no longer selects the GPIO function on the Rx pad when routing via the GPIO matrix.
// Pins that boot with another IO_MUX function (e.g. GPIO43/44 = UART0 on S3, JTAG pins) would never see the signal.
gpio_reset_pin((gpio_num_t)rx_gpio);
uart_set_pin(EMSUART_NUM, tx_gpio, rx_gpio, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
gpio_pullup_en((gpio_num_t)rx_gpio); // IDF 5 no longer enables the Rx pull-up, some custom interfaces rely on it
uart_set_line_inverse(EMSUART_NUM, inverse_mask);
@@ -110,6 +113,7 @@ void EMSuart::start(const uint8_t tx_mode, const uint8_t rx_gpio, const uint8_t
xTaskCreatePinnedToCore(uart_event_task, "uart_event_task", EMSESP_UART_STACKSIZE, NULL, EMSESP_UART_PRIORITY, &xHandle, EMSESP_UART_RUNNING_CORE);
#endif
} else {
gpio_reset_pin((gpio_num_t)rx_gpio);
uart_set_pin(EMSUART_NUM, tx_gpio, rx_gpio, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
gpio_pullup_en((gpio_num_t)rx_gpio);
vTaskResume(xHandle);