MSP432 TI-RTOS PWM on TA0

Yes, "Board_PWM0 did not open", TI-RTOS version is 2.16.00.08, MSPWare version is 3.10 and XDCtools version is 3.31.1.33. (CCS 6.1 is completely updated). Project is pwmled examle. I don't change the pwmled.c file.

Yes of course. 7-zip archive with project folder.https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/355/1106.pwmled_5F00_MSP_5F00_EXP432P401R_5F00_TI_5F00_MSP432P401R.7z

Hi, 

I'm also using it for motor control. From the advise you received, how did you end up setting up the actual clock. Furthermore, how would I go about adding more GPIO ports to this code?

Ok, I will give an example for CCS 6.1.1 and TI-RTOS 2.16. The first thing you need to do is to determine what timers you'll use. So I used Timer A0 instead of Timer A1. By default the Timer A1 is used to set-up PWM, and the Timer A0 is used to set-up Clock Timer. So you need to update the Clock configuration in your application .cfg file to use a different Timer instead of Timer A0 for Clock operations:

Double click on *.cfg, next click on 'TI-RTOS Kernel' -> 'Clock'. Change 'Timer Id' in 'Timer Control' field, save, close the file.

Now open Board.h file and find next definition:

#define Board_PWM0                  MSP_EXP432P401R_PWM_TA1_1
#define Board_PWM1                  MSP_EXP432P401R_PWM_TA1_2

Change to:

#define Board_PWM0                  MSP_EXP432P401R_PWM_TA0_1
#define Board_PWM1                  MSP_EXP432P401R_PWM_TA0_2

If you need more PWMs, add definitions (here I'll use two additional PWMs on Timer A0):

#define Board_PWM2                  MSP_EXP432P401R_PWM_TA0_3
#define Board_PWM3                  MSP_EXP432P401R_PWM_TA0_4

Ok, next. Open MSP_EXP432P401R.h file and find next definition:

typedef enum MSP_EXP432P401R_PWMName {
    MSP_EXP432P401R_PWM_TA1_1 = 0,
    MSP_EXP432P401R_PWM_TA1_2,

    MSP_EXP432P401R_PWMCOUNT
} MSP_EXP432P401R_PWMName;

Change to:

typedef enum MSP_EXP432P401R_PWMName {
    MSP_EXP432P401R_PWM_TA0_1 = 0,
    MSP_EXP432P401R_PWM_TA0_2,

    MSP_EXP432P401R_PWMCOUNT
} MSP_EXP432P401R_PWMName;

If you need more, add:

typedef enum MSP_EXP432P401R_PWMName {
    MSP_EXP432P401R_PWM_TA0_1 = 0,
    MSP_EXP432P401R_PWM_TA0_2,
    MSP_EXP432P401R_PWM_TA0_3,
    MSP_EXP432P401R_PWM_TA0_4,

    MSP_EXP432P401R_PWMCOUNT
} MSP_EXP432P401R_PWMName;

Now toggle to MSP_EXP432P401R.c file. Find the PWM sector and change:

/*
 *  =============================== PWM ===============================
 */
/* Place into subsections to allow the TI linker to remove items properly */
#if defined(__TI_COMPILER_VERSION__)
#pragma DATA_SECTION(PWM_config, ".const:PWM_config")
#pragma DATA_SECTION(pwmTimerMSP432HWAttrs, ".const:pwmTimerMSP432HWAttrs")
#endif

#include <ti/drivers/PWM.h>
#include <ti/drivers/pwm/PWMTimerMSP432.h>

PWMTimerMSP432_Object pwmTimerMSP432Objects[MSP_EXP432P401R_PWMCOUNT];

const PWMTimerMSP432_HWAttrs pwmTimerMSP432HWAttrs[MSP_EXP432P401R_PWMCOUNT] = {
    {
        .baseAddr = TIMER_A0_BASE,
        .compareRegister = TIMER_A_CAPTURECOMPARE_REGISTER_1
    },
    {
        .baseAddr = TIMER_A0_BASE,
        .compareRegister = TIMER_A_CAPTURECOMPARE_REGISTER_2
    },
    {
        .baseAddr = TIMER_A0_BASE,
        .compareRegister = TIMER_A_CAPTURECOMPARE_REGISTER_3
    },
    {
        .baseAddr = TIMER_A0_BASE,
        .compareRegister = TIMER_A_CAPTURECOMPARE_REGISTER_4
    }
};

const PWM_Config PWM_config[] = {
    {
        .fxnTablePtr = &PWMTimerMSP432_fxnTable,
        .object = &pwmTimerMSP432Objects[0],
        .hwAttrs = &pwmTimerMSP432HWAttrs[0]
    },
    {
        .fxnTablePtr = &PWMTimerMSP432_fxnTable,
        .object = &pwmTimerMSP432Objects[1],
        .hwAttrs = &pwmTimerMSP432HWAttrs[1]
    },
    {
        .fxnTablePtr = &PWMTimerMSP432_fxnTable,
        .object = &pwmTimerMSP432Objects[2],
        .hwAttrs = &pwmTimerMSP432HWAttrs[2]
    },
    {
        .fxnTablePtr = &PWMTimerMSP432_fxnTable,
        .object = &pwmTimerMSP432Objects[3],
        .hwAttrs = &pwmTimerMSP432HWAttrs[3]
    },
    {NULL, NULL, NULL}
};

/*
 *  ======== MSP_EXP432P401R_initPWM ========
 */
void MSP_EXP432P401R_initPWM(void)
{
    /* Enable PWM output on GPIO pins */
    MAP_GPIO_setAsPeripheralModuleFunctionOutputPin(GPIO_PORT_P2,
        GPIO_PIN4 | GPIO_PIN5, GPIO_PRIMARY_MODULE_FUNCTION);

    MAP_GPIO_setAsPeripheralModuleFunctionOutputPin(GPIO_PORT_P2,
        GPIO_PIN6 | GPIO_PIN7, GPIO_PRIMARY_MODULE_FUNCTION);

    PWM_init();
}

For example, how initialize PWM in your main *.c file of project, see: View -> Resource Explorer.