SIMPLELINK-CC2640R2-SDK: How to edit the Simplelink SDK as to change the functionality of pins

Hello Jordan, 

What GPIOs are you looking to alter? 

To assign GPIOs, please follow the steps below: 

1. Within board.h, define the desired GPIO. 

#define Board_DIO21     CC2640R2_LAUNCHXL_DIO21

2. Define the CC2640R2_LAUNCHXL_DIO21 within CC2640R2_LAUNCHXL.h. 

#define CC2640R2_LAUNCHXL_DIO21     IOID_21

3. If you are using the for standard digital GPIO, (DIO), then you can add the code below to test: 

#include <ti/drivers/GPIO.h>
#include <ti/devices/cc26x0r2/driverlib/ioc.h>

/* Board Header file */
#include "Board.h"

/*
 *  ======== mainThread ========
 */
void *mainThread(void *arg0)
{
    /* 1 second delay */
    uint32_t time = 1;

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

    /* Configure GPIO to output, and starts low */
    GPIO_setConfig(Board_DIO21, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_LOW);

    /* Additional IO configuration for GPIO output */
    IOCPinTypeGpioOutput( IOID_21 );

    /* While loop to continuously toggle GPIO */
    while (1) {

        GPIO_writeDio(Board_DIO21, 0);
        sleep(time);
        GPIO_writeDio(Board_DIO21, 1);
    }
}

Let me know if this helps! 

Thanks, 

Isaac

Within the board.h specifically I am trying to change pins 6 and 7 to match pins 12 and 15. In CC2640R2_LAUNCHXL.h they are set as the PIN_RLEG and GLED: 

Hello Jordan, 

Can you clarify what you mean by match pins 12 and 15? For example, do you want GPIO 6 to toggle when GPIO 12 is toggled? 

To do this, alter the IOID_xx to the desired GPIO output within CC2640R2_LAUNCHXL.h. I would then recommend changing the CC2640R2_LAUNCHXL_xxx name to the DIO #. After this, alter the board.h file to represent the new DIO name. For example: 

CC2640R2_LAUNCHXL.h

//#define CC2640R2_LAUNCHXL_PIN_BTN1              IOID_13 //OLD
#define CC2640R2_LAUNCHXL_DIO13                 IOID_13 //Updated

Board.h

//#define Board_PIN_BUTTON0       CC2640R2_LAUNCHXL_PIN_BTN1 //Old
//#define Board_PIN_BTN1          CC2640R2_LAUNCHXL_PIN_BTN1 //Old

#define Board_DIO13             CC2640R2_LAUNCHXL_DIO13 //NEW

Additionally, run a search on your project to verify the desired pins are not being initialized/assigned somewhere else. You can do this by toggling ctrl+h, and looking up the IOID_# value within File Search. 

Let me know if this helps. 

Thanks, 
Isaac

Sorry that wasn't clear, simply we want pins 6 and 7 to match pins 12 and 15 in functionality. We previously had one multiplexer on our custom PCB, and we recently added a second. Pins 12 and 15 are on the original component, 6 and 7 will do the same functionality but on the newly added mux

Hello Jordan, 

I appreciate your patience. 

Unfortunately, the GPIO/Pin drivers do not offer a pin muxing API. Please refer to the PIN_setPortOutputValue function. The function can simultaneously toggle GPIOs via a buffer. Also, please refer to the E2E thread linked. 

Let me know if this helps!

Thanks, 

Isaac