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fix(uart): removes assert() to avoid reset #11508

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Merged
merged 1 commit into from
Jun 24, 2025
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fix(uart): removes assert() to avoid reset #11508

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5 changes: 4 additions & 1 deletion cores/esp32/esp32-hal-uart.c
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Original file line number Diff line number Diff line change
Expand Up @@ -305,7 +305,10 @@ 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) {
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.
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