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Jun 24, 2025
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fix(uart): idf 5.5 new gpio_iomux_* functions (#11507)
* fix(uart): idf 5.5 new gpio_iomux_* functions

* fix(uart): formatting and style

* fix(uart): commentaries style fix

* fix(uart): commentaries style fix

* fix(uart): commentaries style fix

* fix(uart): support to any idf 5.x version

* fix(uart): changing assert in order to avoid reset

* ci(pre-commit): Apply automatic fixes

---------

Co-authored-by: pre-commit-ci-lite[bot] <117423508+pre-commit-ci-lite[bot]@users.noreply.github.com>
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SuGlider and pre-commit-ci-lite[bot] authored Jun 24, 2025
commit ce47271c63b7bb8ac707a850b31d232cc24e17bf
19 changes: 15 additions & 4 deletions cores/esp32/esp32-hal-uart.c
Original file line number Diff line number Diff line change
Expand Up @@ -317,13 +317,24 @@ static bool _uartTrySetIomuxPin(uart_port_t uart_num, int io_num, uint32_t idx)
}

// Assign the correct function to the GPIO.
assert(upin->iomux_func != -1);
if (upin->iomux_func == -1) {
log_e("IO#%d has bad IOMUX internal information. Switching to GPIO Matrix UART function.", io_num);
return false;
}
if (uart_num < SOC_UART_HP_NUM) {
#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 5, 0)
if (upin->input) {
gpio_iomux_input(io_num, upin->iomux_func, upin->signal);
} else {
gpio_iomux_output(io_num, upin->iomux_func);
}
#else
gpio_iomux_out(io_num, upin->iomux_func, false);
// If the pin is input, we also have to redirect the signal, in order to bypass the GPIO matrix.
if (upin->input) {
gpio_iomux_in(io_num, upin->signal);
}
#endif
}
#if (SOC_UART_LP_NUM >= 1) && (SOC_RTCIO_PIN_COUNT >= 1)
else {
Expand Down Expand Up @@ -1276,11 +1287,11 @@ bool uartSetClockSource(uint8_t uartNum, uart_sclk_t clkSrc) {
#if SOC_UART_LP_NUM >= 1
if (uart->num >= SOC_UART_HP_NUM) {
switch (clkSrc) {
case UART_SCLK_XTAL: uart->_uart_clock_source = LP_UART_SCLK_XTAL_D2; break;
case UART_SCLK_XTAL: uart->_uart_clock_source = LP_UART_SCLK_XTAL_D2; break;
#if CONFIG_IDF_TARGET_ESP32C5
case UART_SCLK_RTC: uart->_uart_clock_source = LP_UART_SCLK_RC_FAST; break;
case UART_SCLK_RTC: uart->_uart_clock_source = LP_UART_SCLK_RC_FAST; break;
#else
case UART_SCLK_RTC: uart->_uart_clock_source = LP_UART_SCLK_LP_FAST; break;
case UART_SCLK_RTC: uart->_uart_clock_source = LP_UART_SCLK_LP_FAST; break;
#endif
case UART_SCLK_DEFAULT:
default: uart->_uart_clock_source = LP_UART_SCLK_DEFAULT;
Expand Down
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