LAUNCHXL-CC26X2R1: GPIO pins

Manikanth Chintoju

Hi TI,

Below I have attached the CODE for enabling 5 LED's based on the value received in the function "SpeedIndicator_PresentStateIndication" But I see it is not working , maximum input to the function is 100.

I have enabled pins LED_ 1 - DIO25, LED_ 2 - DIO26, LED_ 3 - DIO27, LED_ 4 - DIO28, LED_ 5 - DIO29 using syscfg and enabled as dynamic mode.

Is there anything to add in the code please mention it .

#include "SpeedIndicator.h"
#include <unistd.h>
#include <ti/drivers/PIN.h>
#include "ti_drivers_config.h"
#include "stdint.h"
#include <ti/drivers/GPIO.h>

static void SpeedIndicator_ClearAllIndication(void);

static void SpeedIndicator_SetHigh(uint16_t bitSet);

static uint16_t SpeedIndicator_Level(uint16_t Div,uint16_t d);

//Initializing all the 5 pins
PIN_Config ledPinTable[] = {
                            CONFIG_LED_1 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX,
                            CONFIG_LED_2 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX,
                            CONFIG_LED_3 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX,
                            CONFIG_LED_4 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX,
                            CONFIG_LED_5 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX,
                            PIN_TERMINATE
};

/*********************************************************************
* @fn      SpeedIndicator_ClearAllIndication
*
* @brief   Setting all the LED's to LOW
*
* @param   none
*
* @return none
*
*/
static void SpeedIndicator_ClearAllIndication(void)
{
    GPIO_init();

    GPIO_write(CONFIG_LED_1, CONFIG_GPIO_LED_OFF);
    GPIO_write(CONFIG_LED_2, CONFIG_GPIO_LED_OFF);
    GPIO_write(CONFIG_LED_3, CONFIG_GPIO_LED_OFF);
    GPIO_write(CONFIG_LED_4, CONFIG_GPIO_LED_OFF);
    GPIO_write(CONFIG_LED_5, CONFIG_GPIO_LED_OFF);
}

/*********************************************************************
* @fn      SpeedIndicator_PresentState
*
* @brief   Indicating the Present State interms of LED's
*
* @param   PerBatSoc
*
* @return none
*
*/
void SpeedIndicator_PresentStateIndication(uint8_t PerBatSoc)
{
    uint16_t bitSet = SpeedIndicator_Level(PerBatSoc,20);

    SpeedIndicator_ClearAllIndication();

    SpeedIndicator_SetHigh(bitSet);
}

/*********************************************************************
* @fn      SpeedIndicator_PresentState
*
* @brief   Indicating the Present State interms of LED's
*
* @param   PerBatSoc
*
* @return none
*
*/
static void SpeedIndicator_SetHigh(uint16_t bitSet)
{
    switch (bitSet)
    {
    case 5:
        GPIO_write(CONFIG_LED_1, CONFIG_GPIO_LED_ON);
        GPIO_write(CONFIG_LED_2, CONFIG_GPIO_LED_ON);
        GPIO_write(CONFIG_LED_3, CONFIG_GPIO_LED_ON);
        GPIO_write(CONFIG_LED_4, CONFIG_GPIO_LED_ON);
        GPIO_write(CONFIG_LED_5, CONFIG_GPIO_LED_ON);
        break;

    case 4:
        GPIO_write(CONFIG_LED_2, CONFIG_GPIO_LED_ON);
        GPIO_write(CONFIG_LED_3, CONFIG_GPIO_LED_ON);
        GPIO_write(CONFIG_LED_4, CONFIG_GPIO_LED_ON);
        GPIO_write(CONFIG_LED_5, CONFIG_GPIO_LED_ON);
        break;

    case 3:
        GPIO_write(CONFIG_LED_3, CONFIG_GPIO_LED_ON);
        GPIO_write(CONFIG_LED_4, CONFIG_GPIO_LED_ON);
        GPIO_write(CONFIG_LED_5, CONFIG_GPIO_LED_ON);
        break;

    case 2:
        GPIO_write(CONFIG_LED_4, CONFIG_GPIO_LED_ON);
        GPIO_write(CONFIG_LED_5, CONFIG_GPIO_LED_ON);
        break;

    case 1:
        GPIO_write(CONFIG_LED_5, CONFIG_GPIO_LED_ON);
        break;
    default:
        break;

    }
}

static uint16_t SpeedIndicator_Level(uint16_t Div,uint16_t d)
{
    uint16_t quotient = 0;
    while (Div >= d) {
        Div = Div - d;
        ++quotient;
    }
    return quotient;
}

over 4 years ago

0 AB over 4 years ago

TI__Mastermind 24956 points

Hey Manikanth,

Have you looked at our gpiointerrupt example inside the driver example folder? https://dev.ti.com/tirex/explore/node?node=AICZrjOoUIiEJnfx3TMmkQ__pTTHBmu__LATEST

Use this as an example on how to properly initiate the GPIO driver.

I think what you are missing is the initilization of the pins after GPIO_init(), add the following in between GPIO_init() and GPIO_Write... :

GPIO_setConfig(CONFIG_LED_1, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_LOW);
GPIO_setConfig(CONFIG_LED_2, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_LOW);
GPIO_setConfig(CONFIG_LED_3, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_LOW);
GPIO_setConfig(CONFIG_LED_4, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_LOW);
GPIO_setConfig(CONFIG_LED_5, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_LOW);

I hope this helps,

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LAUNCHXL-CC26X2R1: GPIO pins