UART2 in simplelink microcontrollers CC13x2, CC26x2

Hi A,

There is no callback example in the docs as you say. There is however examples planned for the upcoming SDKs. In the mean while, here is an example:

#include <stdint.h>
#include <stddef.h>

/* POSIX Header files */
#include <semaphore.h>

/* Driver Header files */
#include <ti/drivers/GPIO.h>
#include <ti/drivers/UART2.h>

/* Driver configuration */
#include "ti_drivers_config.h"

static sem_t sem;
static volatile size_t numBytesRead;

/*
 *  ======== callbackFxn ========
 */
void callbackFxn(UART2_Handle handle, void *buffer, size_t count,
        void *userArg, int_fast16_t status)
{
    if (status != UART2_STATUS_SUCCESS) {
        /* RX error occured in UART2_read() */
        while (1);
    }

    numBytesRead = count;
    sem_post(&sem);
}

/*
 *  ======== mainThread ========
 */
void *mainThread(void *arg0)
{
    char              input;
    const char        echoPrompt[] = "Echoing characters:\r\n";
    UART2_Handle      uart;
    UART2_Params      uartParams;
    int32_t           semStatus;
    uint32_t          status = UART2_STATUS_SUCCESS;

    /* Call driver init functions */
    GPIO_init();

    /* Configure the LED pin */
    GPIO_setConfig(CONFIG_GPIO_LED_0, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_LOW);

    /* Create semaphore */
    semStatus = sem_init(&sem, 0, 0);

    if (semStatus != 0) {
        /* Error creating semaphore */
        while (1);
    }

    /* Create a UART in CALLBACK read mode */
    UART2_Params_init(&uartParams);
    uartParams.readMode = UART2_Mode_CALLBACK;
    uartParams.readCallback = callbackFxn;
    uartParams.baudRate = 115200;

    uart = UART2_open(CONFIG_UART2_0, &uartParams);

    if (uart == NULL) {
        /* UART2_open() failed */
        while (1);
    }

    /* Turn on user LED to indicate successful initialization */
    GPIO_write(CONFIG_GPIO_LED_0, CONFIG_GPIO_LED_ON);

    /* Pass NULL for bytesWritten since it's not used in this example */
    UART2_write(uart, echoPrompt, sizeof(echoPrompt), NULL);

    /* Loop forever echoing */
    while (1) {
        numBytesRead = 0;

        /* Pass NULL for bytesRead since it's not used in this example */
        status = UART2_read(uart, &input, 1, NULL);

        if (status != UART2_STATUS_SUCCESS) {
            /* UART2_read() failed */
            while (1);
        }

        /* Do not write until read callback executes */
        sem_wait(&sem);

        if (numBytesRead > 0) {
            status = UART2_write(uart, &input, 1, NULL);

            if (status != UART2_STATUS_SUCCESS) {
                /* UART2_write() failed */
                while (1);
            }
        }
    }
}

Thank you

Sincerely thank you very much!!!