CC2340R5: ADC pin current consumption too high after ADC_close

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 */

/*
 *  ======== adcsinglechannel.c ========
 */
#include <unistd.h>
#include <stdint.h>
#include <stddef.h>

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

/* Driver Header files */
#include <ti/drivers/ADC.h>
#include <ti/drivers/GPIO.h>
// #include <ti/display/Display.h>

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

/* ADC sample count */
#define ADC_SAMPLE_COUNT (10)

#define THREADSTACKSIZE (768)

/* Inputs to the ADC on the CC32XX launchpads are downscaled by a factor of 0.42
 * Multiplying the conversion output with 2.365 will provide compensated output.
 */
#if DeviceFamily_PARENT == DeviceFamily_PARENT_CC32XX
    #define COMPENSATION_FACTOR 2365
#else
    #define COMPENSATION_FACTOR 1000
#endif

/* ADC conversion result variables */
//uint16_t adcValue0;
//uint32_t adcValue0MicroVolt;
uint16_t adcValue1[ADC_SAMPLE_COUNT];
uint32_t adcValue1MicroVolt[ADC_SAMPLE_COUNT];

// static Display_Handle display;

/*
 *  ======== threadFxn0 ========
 *  Open an ADC instance and get a sampling result from a one-shot conversion.
 */
//void *threadFxn0(void *arg0)
//{
//    ADC_Handle adc;
//    ADC_Params params;
//    int_fast16_t res;
//
//    ADC_Params_init(&params);
//    adc = ADC_open(CONFIG_ADC_0, &params);
//
//    if (adc == NULL)
//    {
//        // Display_printf(display, 0, 0, "Error initializing CONFIG_ADC_0\n");
//        while (1) {}
//    }
//
//    /* Blocking mode conversion */
//    res = ADC_convert(adc, &adcValue0);
//
//    if (res == ADC_STATUS_SUCCESS)
//    {
//
//        adcValue0MicroVolt = (COMPENSATION_FACTOR * ADC_convertRawToMicroVolts(adc, adcValue0)) / 1000;
//
//        // Display_printf(display, 0, 0, "CONFIG_ADC_0 raw result: %d\n", adcValue0);
//        // Display_printf(display, 0, 0, "CONFIG_ADC_0 convert result: %d uV\n", adcValue0MicroVolt);
//    }
//    else
//    {
//        // Display_printf(display, 0, 0, "CONFIG_ADC_0 convert failed\n");
//    }
//
//    ADC_close(adc);
//
//    return (NULL);
//}

void doAdc() {
    uint16_t i;
    ADC_Handle adc;
    ADC_Params params;
    int_fast16_t res;

    ADC_Params_init(&params);
    adc = ADC_open(CONFIG_ADC_1, &params);

    if (adc == NULL)
    {
        // Display_printf(display, 0, 0, "Error initializing CONFIG_ADC_1\n");
        while (1) {}
    }

    for (i = 0; i < ADC_SAMPLE_COUNT; i++)
    {
        res = ADC_convert(adc, &adcValue1[i]);

        if (res == ADC_STATUS_SUCCESS)
        {

            adcValue1MicroVolt[i] = (COMPENSATION_FACTOR * (ADC_convertToMicroVolts(adc, adcValue1[i]))) / 1000;

            // Display_printf(display, 0, 0, "CONFIG_ADC_1 raw result (%d): %d\n", i, adcValue1[i]);
            // Display_printf(display, 0, 0, "CONFIG_ADC_1 convert result (%d): %d uV\n", i, adcValue1MicroVolt[i]);
        }
        else
        {
            // Display_printf(display, 0, 0, "CONFIG_ADC_1 convert failed (%d)\n", i);
        }
    }

    //GPIO_setConfig(CONFIG_GPIO_ADC_1_AIN, GPIO_CFG_INPUT);
    GPIO_setConfigAndMux(CONFIG_GPIO_ADC_1_AIN, GPIO_CFG_INPUT, GPIO_MUX_GPIO);
    ADC_close(adc);

}

/*
 *  ======== threadFxn1 ========
 *  Open a ADC handle and get an array of sampling results after
 *  calling several conversions.
 */
void *threadFxn1(void *arg0)
{
    while(1) {
        doAdc();
        sleep(4);
    }

    return (NULL);
}

/*
 *  ======== mainThread ========
 */
void *mainThread(void *arg0)
{
    pthread_t thread0, thread1;
    pthread_attr_t attrs;
    struct sched_param priParam;
    int retc;
    int detachState;

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

    // Display_init();

    /* Open the display for output */
    // display = Display_open(Display_Type_UART, NULL);
    // if (display == NULL)
    // {
    //     /* Failed to open display driver */
    //     while (1) {}
    // }

    // Display_printf(display, 0, 0, "Starting the acdsinglechannel example\n");

    /* Create application threads */
    pthread_attr_init(&attrs);

    detachState = PTHREAD_CREATE_DETACHED;
    /* Set priority and stack size attributes */
    retc        = pthread_attr_setdetachstate(&attrs, detachState);
    if (retc != 0)
    {
        /* pthread_attr_setdetachstate() failed */
        while (1) {}
    }

    retc |= pthread_attr_setstacksize(&attrs, THREADSTACKSIZE);
    if (retc != 0)
    {
        /* pthread_attr_setstacksize() failed */
        while (1) {}
    }

    /* Create threadFxn0 thread */
    priParam.sched_priority = 1;
    pthread_attr_setschedparam(&attrs, &priParam);

//    retc = pthread_create(&thread0, &attrs, threadFxn0, NULL);
//    if (retc != 0)
//    {
//        /* pthread_create() failed */
//        while (1) {}
//    }

    /* Create threadFxn1 thread */
    retc = pthread_create(&thread1, &attrs, threadFxn1, (void *)0);
    if (retc != 0)
    {
        /* pthread_create() failed */
        while (1) {}
    }

    return (NULL);
}