pmap_ex3_singleFunctionToMultiplePins.c

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//******************************************************************************
//******************************************************************************
#include "driverlib.h"
//*****************************************************************************
//
//Refer Datasheet for Port4 Port Mapping definitions
//
//*****************************************************************************
uint8_t port_mapping[] = {
    //Port 4
    PM_TB0CCR1A,
    PM_TB0CCR2A,
    PM_TB0CCR3A,
    PM_TB0CCR4A,
    PM_TB0CCR1A,
    PM_TB0CCR2A,
    PM_TB0CCR3A,
    PM_TB0CCR4A
};
 
void main (void)
{
    //Stop WDT
    WDT_A_hold(WDT_A_BASE);
 
    //Set DCO FLL reference = REFO
    UCS_initClockSignal(
        UCS_FLLREF,
        UCS_REFOCLK_SELECT,
        UCS_CLOCK_DIVIDER_1
        );
 
    //REFO Clock Sources ACLK
    UCS_initClockSignal(
        UCS_ACLK,
        UCS_REFOCLK_SELECT,
        UCS_CLOCK_DIVIDER_1
        );
 
    //Set Ratio and Desired MCLK Frequency  and initialize DCO
    UCS_initFLLSettle(
        1048,
        32
        );
 
 
    //Setup Port Pins
    //P4.0 - P4.7 output
    //P4.0 - P4.6 Port Map functions
    GPIO_setAsPeripheralModuleFunctionOutputPin(
        GPIO_PORT_P4,
        GPIO_PIN0 + GPIO_PIN1 + GPIO_PIN2 +
        GPIO_PIN3 + GPIO_PIN4 + GPIO_PIN5 +
        GPIO_PIN6 + GPIO_PIN7 + GPIO_PIN8 +
        GPIO_PIN9 + GPIO_PIN10 + GPIO_PIN11 +
        GPIO_PIN12 + GPIO_PIN13 + GPIO_PIN14 +
        GPIO_PIN15
        );
 
    //Start Up Down Timer
    Timer_B_initUpDownModeParam initUpDownModeParam = {0};
    initUpDownModeParam.clockSource = TIMER_B_CLOCKSOURCE_ACLK;
    initUpDownModeParam.clockSourceDivider = TIMER_B_CLOCKSOURCE_DIVIDER_1;
    initUpDownModeParam.timerPeriod = 256;
    initUpDownModeParam.timerInterruptEnable_TBIE = TIMER_B_TBIE_INTERRUPT_DISABLE;
    initUpDownModeParam.captureCompareInterruptEnable_CCR0_CCIE =
        TIMER_B_CCIE_CCR0_INTERRUPT_DISABLE;
    initUpDownModeParam.timerClear = TIMER_B_SKIP_CLEAR;
    initUpDownModeParam.startTimer = true;
    Timer_B_initUpDownMode(TIMER_B0_BASE, &initUpDownModeParam);
 
    //Generate PWM 1
    Timer_B_initCompareModeParam param = {0};
    param.compareRegister = TIMER_B_CAPTURECOMPARE_REGISTER_1;
    param.compareInterruptEnable = TIMER_B_CAPTURECOMPARE_INTERRUPT_DISABLE;
    param.compareOutputMode = TIMER_B_OUTPUTMODE_TOGGLE_SET;
    param.compareValue = 192;
    Timer_B_initCompareMode(TIMER_B0_BASE, &param);
    
    //Generate PWM 2
    param.compareRegister = TIMER_B_CAPTURECOMPARE_REGISTER_2;
    param.compareInterruptEnable = TIMER_B_CAPTURECOMPARE_INTERRUPT_DISABLE;
    param.compareOutputMode = TIMER_B_OUTPUTMODE_TOGGLE_SET;
    param.compareValue = 128;
    Timer_B_initCompareMode(TIMER_B0_BASE, &param);
 
    //Generate PWM 3
    param.compareRegister = TIMER_B_CAPTURECOMPARE_REGISTER_3;
    param.compareInterruptEnable = TIMER_B_CAPTURECOMPARE_INTERRUPT_DISABLE;
    param.compareOutputMode = TIMER_B_OUTPUTMODE_TOGGLE_SET;
    param.compareValue = 64;
    Timer_B_initCompareMode(TIMER_B0_BASE, &param);
 
    //Generate PWM 4
    param.compareRegister = TIMER_B_CAPTURECOMPARE_REGISTER_4;
    param.compareInterruptEnable = TIMER_B_CAPTURECOMPARE_INTERRUPT_DISABLE;
    param.compareOutputMode = TIMER_B_OUTPUTMODE_TOGGLE_SET;
    param.compareValue = 32;
    Timer_B_initCompareMode(TIMER_B0_BASE, &param);
 
    //Initialize WDT module in timer interval mode,
    //with ACLK as source at an interval of 1sec.
    WDT_A_initIntervalTimer(WDT_A_BASE,
        WDT_A_CLOCKSOURCE_ACLK,
        WDT_A_CLOCKDIVIDER_32K);
 
    //Enable Watchdog Interupt
    SFR_clearInterrupt(WDTIE);
    SFR_enableInterrupt(WDTIE);
 
    while (1)
    {
        //CONFIGURE PORTS- pass the port_mapping array, start @ P4MAP01, initialize
        //a single port, allow run-time reconfiguration of port mapping
        PMAP_initPortsParam initPortsParam = {0};
        initPortsParam.portMapping = port_mapping;
        initPortsParam.PxMAPy = (uint8_t  *)&P4MAP01;
        initPortsParam.numberOfPorts = 1;
        initPortsParam.portMapReconfigure = PMAP_ENABLE_RECONFIGURATION;
        PMAP_initPorts(PMAP_CTRL_BASE, &initPortsParam);
 
        //Enter LPM3 w/interrupt
        __bis_SR_register(LPM3_bits + GIE);
 
        //For debugger
        __no_operation();
 
        //Rotate the port map sequence
        uint8_t tempVariable = port_mapping[0];
        uint16_t i = 0;
        for (i = 0; i < 7; i++)
        {
            //Rotate port map array
            port_mapping[i] = port_mapping[i + 1];
        }
        port_mapping[7] = tempVariable;
    }
}
 
//******************************************************************************
//
//This is the Watchdog Timer interrupt service routine
//
//******************************************************************************
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=WDT_VECTOR
__interrupt
#elif defined(__GNUC__)
__attribute__((interrupt(WDT_VECTOR)))
#endif
void watchdog_timer (void)
{
    __delay_cycles(100);
 
    //Exit LPM3
    __bic_SR_register_on_exit(LPM3_bits);
}