uart_mongoose_os.c

#include "common/mbuf.h"
#include "common/platform.h"

#include "mgos.h"
#include "mgos_uart.h"
#include "mgos_timers.h"

/*
   * GPIO pin numbers, default values depend on UART number.
   *
   * UART 0: Rx: 3, Tx: 1, CTS: 19, RTS: 22
   * UART 1: Rx: 25, Tx: 26, CTS: 27, RTS: 13
   * UART 2: Rx: 16, Tx: 17, CTS: 14, RTS: 15
   */


#define UART_NUM 1

static void uart_dispatcher(int uart_no, void *arg) {
    assert(uart_no == UART_NUM);
    size_t rx_av = mgos_uart_read_avail(uart_no);
    if (rx_av > 0) {
        struct mbuf rxb;
        mbuf_init(&rxb, 0);
        mgos_uart_read_mbuf(uart_no, &rxb, rx_av);
        if (rxb.len > 0) {
            LOG(LL_DEBUG, ("%.*s", (int) rxb.len, rxb.buf));
        }
        mbuf_free(&rxb);
    }
    (void) arg;
}

enum mgos_app_init_result mgos_app_init(void) {
    cs_log_set_level(LL_DEBUG);

    struct mgos_uart_config cfg = {
            .baud_rate = 115200,
            .num_data_bits = 8,
            .parity = MGOS_UART_PARITY_NONE,
            .stop_bits = MGOS_UART_STOP_BITS_1,

            /*.dev = {
                    .tx_gpio = 4,
                    .rx_gpio = 36
            }*/
    };
    mgos_uart_config_set_defaults(UART_NUM, &cfg);

    if (!mgos_uart_configure(UART_NUM, &cfg)) {
        return MGOS_APP_INIT_ERROR;
    }
    mgos_uart_set_dispatcher(UART_NUM, uart_dispatcher, NULL /* arg */);
    mgos_uart_set_rx_enabled(UART_NUM, true);


    return MGOS_APP_INIT_SUCCESS;
}