How to change UART2 TX Buffer limit?

[ClosedLoop]

Hello, I am using an ESP32 and a STM32 microcontroller in the same project. To communicate between the two i use UART2. I am trying to send structures between the two.I can receive from the STM fine but when i try to send a structure to the STM, i only receives 128 bytes. I don't know how i can change this limit. I would like to change it to 512.

Code: Select all

void init_uart2(){

	uart_debug.index=0;
	uart_debug.f_receive=0;

	//esp_log_level_set(TAGu2, ESP_LOG_INFO);
	/* Configure parameters of an UART driver,
	 * communication pins and install the driver */
    uart_config_t uart_config = {
        .baud_rate = 19200,
        .data_bits = UART_DATA_8_BITS,
        .parity = UART_PARITY_DISABLE,
        .stop_bits = UART_STOP_BITS_1,
        .flow_ctrl = UART_HW_FLOWCTRL_DISABLE
    };
    uart_param_config(UART_NUM_2, &uart_config);

    uart_set_pin(UART_NUM_2, PIN_TX_UART_2, PIN_RX_UART_2, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);

    uart_driver_install(UART_NUM_2, BUFFER_SIZE_UART2 * 2, 0,0,  NULL, 0);

    uart_isr_free(UART_NUM_2);

    uart_isr_register(UART_NUM_2,uart2_intr_handle, NULL, ESP_INTR_FLAG_IRAM, &handle_console);
    uart_enable_rx_intr(UART_NUM_2);



    myputsU0("\n \n Init Uart2 ok.\n");
}

I tried to change the tx_buffer_size in the driver install function to the same as the rx_buffer_size but everytime i send the structure the ESP reboots. I also tried to change some of the FIFO buffer sizes but to no avail.

Does anyone know how to change this limit?

Thank you.