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Title: Issue with UART Communication on ESP32-POE-ISO
Post by: mcgraw on July 01, 2025, 10:48:25 AM

Hello, I'm currently working with the ESP32-POE-ISO module and facing an issue with UART communication. I've set up the following code to initialize UART:

Code Select

#include "driver/uart.h"

void app_main() {
    uart_config_t uart_config = {
        .baud_rate = 115200,
        .data_bits = UART_DATA_8_BITS,
        .parity = UART_PARITY_DISABLE,
        .stop_bits = UART_STOP_BITS_1,
        .flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
    };
    uart_driver_install(UART_NUM_1, 2048, 0, 0, NULL, 0);
    uart_param_config(UART_NUM_1, &uart_config);
}

However, I'm not receiving any data on the specified UART pins. Could this be a pin configuration issue, or is there something else I might be missing?

Title: Re: Issue with UART Communication on ESP32-POE-ISO
Post by: LubOlimex on July 01, 2025, 11:47:25 AM

QuoteHowever, I'm not receiving any data on the specified UART pins.

Which exactly are the "specified UART pins"?

Also what do you use to read to the "specified UART pins"?

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OLinuXino Android / Linux boards and System On Modules => A20 => Topic started by: mcgraw on July 01, 2025, 10:48:25 AM