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fix(uart): fix some uart port generate a RX BRK_DET intr on reset issue

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Issue saw on S3 UART2 port
This commit is contained in:
Song Ruo Jing
2025-11-03 16:14:36 +08:00
parent 968776c20d
commit 2f499b074d
1 changed files with 4 additions and 0 deletions
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components/driver/uart/uart.c
+4
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@@ -189,6 +189,10 @@ static void uart_module_enable(uart_port_t uart_num)
if (uart_context[uart_num].hw_enabled != true) {
periph_module_enable(uart_periph_signal[uart_num].module);
if (uart_num != CONFIG_ESP_CONSOLE_UART_NUM) {
// Workaround: Set RX signal to high to avoid false RX BRK_DET interrupt raised after register reset
if (uart_context[uart_num].rx_io_num == -1) {
esp_rom_gpio_connect_in_signal(GPIO_MATRIX_CONST_ONE_INPUT, UART_PERIPH_SIGNAL(uart_num, SOC_UART_RX_PIN_IDX), false);
}
// Workaround for ESP32C3/S3: enable core reset before enabling uart module clock to prevent uart output
// garbage value.
#if SOC_UART_REQUIRE_CORE_RESET