pmap_ex2_outputTimerBSignal.c

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//******************************************************************************
//******************************************************************************
#include "driverlib.h"
 
//*****************************************************************************
//
//Refer Datasheet for Port4 Port Mapping definitions
//
//*****************************************************************************
const uint8_t port_mapping[] = {
    //Port P4:
    PM_TB0CCR1A,
    PM_TB0CCR1A,
    PM_TB0CCR2A,
    PM_TB0CCR2A,
    PM_TB0CCR3A,
    PM_TB0CCR3A,
    PM_NONE,
    PM_NONE,
};
 
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
        );
 
    //VLO 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
        );
 
    //CONFIGURE PORTS- pass the port_mapping array, start @ P4MAP01, initialize
    //a single port, do not 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_DISABLE_RECONFIGURATION;
    PMAP_initPorts(PMAP_CTRL_BASE, &initPortsParam);
 
    //Start Up Down Timer
    Timer_B_initUpDownModeParam param1 = {0};
    param1.clockSource = TIMER_B_CLOCKSOURCE_ACLK;
    param1.clockSourceDivider = TIMER_B_CLOCKSOURCE_DIVIDER_2;
    param1.timerPeriod = 128;
    param1.timerInterruptEnable_TBIE = TIMER_B_TBIE_INTERRUPT_DISABLE;
    param1.captureCompareInterruptEnable_CCR0_CCIE =
        TIMER_B_CCIE_CCR0_INTERRUPT_DISABLE;
    param1.timerClear = TIMER_B_SKIP_CLEAR;
    param1.startTimer = true;
    Timer_B_initUpDownMode(TIMER_B0_BASE, &param1);
 
    //Generate PWM 1
    Timer_B_initCompareModeParam param2 = {0};
    param2.compareRegister = TIMER_B_CAPTURECOMPARE_REGISTER_1;
    param2.compareInterruptEnable = TIMER_B_CAPTURECOMPARE_INTERRUPT_DISABLE;
    param2.compareOutputMode = TIMER_B_OUTPUTMODE_TOGGLE_SET;
    param2.compareValue = 96;
    Timer_B_initCompareMode(TIMER_B0_BASE, &param2);
 
    //Generate PWM 2
    param2.compareRegister = TIMER_B_CAPTURECOMPARE_REGISTER_2;
    param2.compareInterruptEnable = TIMER_B_CAPTURECOMPARE_INTERRUPT_DISABLE;
    param2.compareOutputMode = TIMER_B_OUTPUTMODE_TOGGLE_SET;
    param2.compareValue = 64;
    Timer_B_initCompareMode(TIMER_B0_BASE, &param2);
 
    //Generate PWM 3
    param2.compareRegister = TIMER_B_CAPTURECOMPARE_REGISTER_3;
    param2.compareInterruptEnable = TIMER_B_CAPTURECOMPARE_INTERRUPT_DISABLE;
    param2.compareOutputMode = TIMER_B_OUTPUTMODE_TOGGLE_SET;
    param2.compareValue = 32;
    Timer_B_initCompareMode(TIMER_B0_BASE, &param2);
    
    //Enter LPM3
    __bis_SR_register(LPM3_bits);
 
    //For debugger
    __no_operation();
}