void Atomizer_Init() {
// Select shunt value based on hardware version
switch(Dataflash_info.hwVersion) {
case 101:
case 108:
Atomizer_shuntRes = 125;
break;
case 103:
case 104:
case 105:
case 106:
Atomizer_shuntRes = 110;
break;
case 107:
case 109:
Atomizer_shuntRes = 120;
break;
case 110:
case 111:
Atomizer_shuntRes = 105;
break;
case 100:
case 102:
default:
Atomizer_shuntRes = 115;
break;
}
// Setup control pins
PC1 = 0;
GPIO_SetMode(PC, BIT1, GPIO_MODE_OUTPUT);
PC3 = 0;
GPIO_SetMode(PC, BIT3, GPIO_MODE_OUTPUT);
// Both channels powered down
Atomizer_ConfigureConverters(0, 0);
// Configure 150kHz PWM
PWM_ConfigOutputChannel(PWM0, ATOMIZER_PWMCH_BUCK, 150000, 0);
PWM_ConfigOutputChannel(PWM0, ATOMIZER_PWMCH_BOOST, 150000, 0);
// Start PWM
PWM_EnableOutput(PWM0, PWM_CH_0_MASK);
PWM_EnableOutput(PWM0, PWM_CH_2_MASK);
PWM_Start(PWM0, PWM_CH_0_MASK);
PWM_Start(PWM0, PWM_CH_2_MASK);
// Set duty cycle to zero
PWM_SET_CMR(PWM0, ATOMIZER_PWMCH_BUCK, 0);
PWM_SET_CMR(PWM0, ATOMIZER_PWMCH_BOOST, 0);
Atomizer_targetVolts = 0;
Atomizer_curCmr = 0;
Atomizer_curState = POWEROFF;
// Setup 5kHz timer for negative feedback cycle
// This function should run during system init, so
// the user hasn't had time to create timers yet.
Timer_CreateTimer(5000, 1, Atomizer_TimerCallback, 0);
}
uint32_t PWM_ConfigOutputChannelf(PWM_T *pwm, uint32_t u32ChannelNum, uint32_t u32Frequency, float u32DutyCycle)
{
uint32_t u32Src;
uint32_t u32PWMClockSrc;
uint32_t i;
uint16_t u16Prescale = 1, u16CNR = 0xFFFF;
if(pwm == PWM0)
u32Src = CLK->CLKSEL2 & CLK_CLKSEL2_PWM0SEL_Msk;
else//(pwm == PWM1)
u32Src = CLK->CLKSEL2 & CLK_CLKSEL2_PWM1SEL_Msk;
if(u32Src == 0) {
//clock source is from PLL clock
u32PWMClockSrc = CLK_GetPLLClockFreq();
}
else {
//clock source is from PCLK
SystemCoreClockUpdate();
u32PWMClockSrc = SystemCoreClock;
}
for(u16Prescale = 1; u16Prescale < 0xFFF; u16Prescale++) {
i = (u32PWMClockSrc / u32Frequency) / u16Prescale;
if(i > (0x10000))
continue;
u16CNR = i;
break;
}
i = u32PWMClockSrc / ((u16Prescale + 1) * u16CNR);
PWM_SET_PRESCALER(pwm, u32ChannelNum, --u16Prescale);
/* Set Counter to upcount */
(pwm)->CTL1 = ((pwm)->CTL1 & ~(PWM_CTL1_CNTTYPE0_Msk << (2 * u32ChannelNum))) | (0UL << (2 * u32ChannelNum));
(pwm)->CTL1 &= ~(PWM_CTL1_CNTMODE0_Msk << u32ChannelNum);
if(u32DutyCycle == 100)
{
PWM_SET_CMR(pwm, u32ChannelNum, u16CNR);
PWM_SET_CNR(pwm, u32ChannelNum, --u16CNR);
}
else
{
PWM_SET_CMR(pwm, u32ChannelNum, (uint32_t)(u32DutyCycle * (u16CNR + 1) / 100 - 1));
PWM_SET_CNR(pwm, u32ChannelNum, --u16CNR);
}
(pwm)->WGCTL0 = ((pwm)->WGCTL0 & ~(PWM_WGCTL0_ZPCTL0_Msk << (u32ChannelNum * 2 + PWM_WGCTL0_ZPCTL0_Msk)))
| (PWM_OUTPUT_HIGH << (u32ChannelNum * 2 + PWM_WGCTL0_ZPCTL0_Pos));
(pwm)->WGCTL1 = ((pwm)->WGCTL1 & ~(PWM_WGCTL1_CMPUCTL0_Msk << (u32ChannelNum * 2 + PWM_WGCTL1_CMPUCTL0_Pos)))
| (PWM_OUTPUT_LOW << (u32ChannelNum * 2 + PWM_WGCTL1_CMPUCTL0_Pos));
return(i);
}
/**
* Negative feedback iteration to keep the DC/DC converters stable.
* Takes parameters an an ADC callback.
* This is an internal function.
*/
static void Atomizer_NegativeFeedback(uint16_t adcValue, uint32_t unused) {
uint16_t curVolts;
if(Atomizer_curState == POWEROFF) {
// Powered off, nothing to do
return;
}
// Calculate current voltage
curVolts = ATOMIZER_ADC_VOLTAGE(adcValue);
if(curVolts == Atomizer_targetVolts) {
// Target reached, nothing to do
return;
}
if(curVolts < Atomizer_targetVolts) {
if(Atomizer_curState == POWERON_BUCK) {
if(Atomizer_curCmr == 479) {
// Reached maximum for buck, switch to boost
Atomizer_curState = POWERON_BOOST;
Atomizer_ConfigureConverters(0, 1);
}
else {
// In buck mode, increased duty cycle = increased voltage
Atomizer_curCmr++;
}
}
else if(Atomizer_curCmr > 80) {
// Boost duty cycle must be greater than 80
// In boost mode, decreased duty cycle = increased voltage
Atomizer_curCmr--;
}
}
else {
if(Atomizer_curState == POWERON_BOOST) {
if(Atomizer_curCmr == 479) {
// Reached minimum for boost, switch to buck
Atomizer_curState = POWERON_BUCK;
Atomizer_ConfigureConverters(1, 0);
}
else {
// In boost mode, increased duty cycle = decreased voltage
Atomizer_curCmr++;
}
}
else {
if(Atomizer_curCmr <= 10) {
// Buck duty cycles below 10 are forced to zero
Atomizer_curCmr = 0;
}
else {
// In buck mode, decreased duty cycle = decreased voltage
Atomizer_curCmr--;
}
}
}
// Set new duty cycle
PWM_SET_CMR(PWM0, Atomizer_curState == POWERON_BUCK ? ATOMIZER_PWMCH_BUCK : ATOMIZER_PWMCH_BOOST, Atomizer_curCmr);
}
void PWM0_Init()
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init PWM0 */
/*---------------------------------------------------------------------------------------------------------*/
/* Set PWM0 clock prescaler */
PWM_SET_PRESCALER(PWM0, 0, 0);
/* Set up counter type */
PWM0->CTL1 &= ~PWM_CTL1_CNTTYPEn_Msk;
/* Set PWM0 timer duty */
PWM_SET_CMR(PWM0, 0, 360);
/* Set PWM0 timer period */
PWM_SET_CNR(PWM0, 0, 720);
/* PWM period point trigger DAC enable */
PWM0->DACTRGEN = 0x1 << PWM_DACTRGEN_PTEn_Pos;
/* Set waveform generation */
PWM0->WGCTL0 = 0xAAA;//PWM zero point and period point output High.
PWM0->WGCTL1 = 0x555;//PWM compare down point and compare up point output Low.
/* Enable output of all PWM0 channels */
PWM0->POEN |= PWM_POEN_POENn_Msk;
}
/**
* @brief PWM0 IRQ Handler
*
* @param None
*
* @return None
*
* @details ISR to handle PWM0 interrupt event
*/
void PWM0_IRQHandler(void)
{
static int toggle = 0;
// Update PWM0 channel 0 period and duty
if(toggle == 0)
{
PWM_SET_CNR(PWM0, 0, 99);
PWM_SET_CMR(PWM0, 0, 39);
}
else
{
PWM_SET_CNR(PWM0, 0, 399);
PWM_SET_CMR(PWM0, 0, 199);
}
toggle ^= 1;
// Clear channel 0 period interrupt flag
PWM_ClearPeriodIntFlag(PWM0, 0);
}
//=========================================================================
//----- (00005C4C) --------------------------------------------------------
__myevic__ void InitPWM()
{
PWM_ConfigOutputChannel( PWM0, BBC_PWMCH_BUCK, BBC_PWM_FREQ, 0 );
PWM_ConfigOutputChannel( PWM0, BBC_PWMCH_BOOST, BBC_PWM_FREQ, 0 );
PWM_EnableOutput( PWM0, 1 << BBC_PWMCH_BUCK );
PWM_EnablePeriodInt( PWM0, BBC_PWMCH_BUCK, 0 );
PWM_EnableOutput( PWM0, 1 << BBC_PWMCH_BOOST );
PWM_EnablePeriodInt( PWM0, BBC_PWMCH_BOOST, 0 );
PWM_Start( PWM0, 1 << BBC_PWMCH_BUCK );
PWM_Start( PWM0, 1 << BBC_PWMCH_BOOST );
BoostDuty = 0;
PWM_SET_CMR( PWM0, BBC_PWMCH_BOOST, 0 );
BuckDuty = 0;
PWM_SET_CMR( PWM0, BBC_PWMCH_BUCK, 0 );
if ( ISVTCDUAL || ISCUBOID || ISCUBO200 || ISRX200S || ISRX23 || ISRX300 )
{
PWM_ConfigOutputChannel( PWM0, BBC_PWMCH_CHARGER, BBC_PWM_FREQ, 0 );
PWM_EnableOutput( PWM0, 1 << BBC_PWMCH_CHARGER );
PWM_Start( PWM0, 1 << BBC_PWMCH_CHARGER );
ChargerDuty = 0;
PWM_SET_CMR( PWM0, BBC_PWMCH_CHARGER, 0 );
if ( ISCUBO200 || ISRX200S || ISRX23 || ISRX300 )
{
MaxChargerDuty = 512;
}
else
{
MaxChargerDuty = 256;
}
}
}
void Atomizer_Control(uint8_t powerOn) {
if((!powerOn && Atomizer_curState == POWEROFF) || (powerOn && Atomizer_curState != POWEROFF)) {
// Nothing to do
return;
}
if(powerOn) {
// Start from buck with duty cycle 10
Atomizer_curCmr = 10;
Atomizer_ConfigureConverters(1, 0);
PWM_SET_CMR(PWM0, ATOMIZER_PWMCH_BUCK, Atomizer_curCmr);
Atomizer_curState = POWERON_BUCK;
}
else {
Atomizer_curState = POWEROFF;
Atomizer_ConfigureConverters(0, 0);
}
}
void motorsSetRatio(int id, uint16_t u16PulseWidth)
{
#ifdef M451
uint32_t u32CNR = 0, u32CMR = 0;
u32CNR = PWM_GET_CNR(PWM0, id);
if(u16PulseWidth >= MAX_PULSE_WIDTH)
u32CMR = u32CNR+1;
else if(u16PulseWidth == 0)
u32CMR = 0;
else
u32CMR = (float)u16PulseWidth*ESC_FREQ_UPDATE_FREQ_DIV_1000000* u32CNR; /* Duty cycle(%)= ratio*ESC_UPDATE_FREQ/1000000 */
PWM_SET_CMR(PWM0, id, u32CMR);
//PWM_ConfigOutputChannelf(PWM0, id, ESC_UPDATE_FREQ, (float)ratio*ESC_UPDATE_FREQ/10000);/*ratio*100*490/1000000*/
#else
uint8_t u8Timer;
switch(id) {
case MOTOR_M1:
u8Timer = DRVPWM_TIMER0;
break;
case MOTOR_M2:
u8Timer = DRVPWM_TIMER1;
break;
case MOTOR_M3:
u8Timer = DRVPWM_TIMER2;
break;
case MOTOR_M4:
u8Timer = DRVPWM_TIMER3;
break;
default :
u8Timer = 0;
}
sPt.u8HighPulseRatio = ratio;
DrvPWM_SetTimerClk(u8Timer, &sPt);
#endif
}
/*---------------------------------------------------------------------------------------------------------*/
int32_t main(void)
{
/* Init System, IP clock and multi-function I/O
In the end of SYS_Init() will issue SYS_LockReg()
to lock protected register. If user want to write
protected register, please issue SYS_UnlockReg()
to unlock protected register if necessary */
/* Unlock protected registers */
SYS_UnlockReg();
/* Init System, IP clock and multi-function I/O */
SYS_Init();
/* Lock protected registers */
SYS_LockReg();
/* Init UART to 115200-8n1 for print message */
UART0_Init();
printf("\n\nCPU @ %dHz(PLL@ %dHz)\n", SystemCoreClock, PllClock);
printf("PWM1 clock is from %s\n", (CLK->CLKSEL2 & CLK_CLKSEL2_PWM1SEL_Msk) ? "CPU" : "PLL");
printf("+------------------------------------------------------------------------+\n");
printf("| PWM Driver Sample Code |\n");
printf("| |\n");
printf("+------------------------------------------------------------------------+\n");
printf(" This sample code will use PWM1 channel 2 to capture the signal from PWM1 channel 0.\n");
printf(" And the captured data is transferred by PDMA channel 0.\n");
printf(" I/O configuration:\n");
printf(" PWM1 channel 2(PC.11) <--> PWM1 channel 0(PC.6)\n\n");
printf("Use PWM1 Channel 2(PC.11) to capture the PWM1 Channel 0(PC.6) Waveform\n");
while(1)
{
printf("\n\nPress any key to start PWM Capture Test\n");
getchar();
/*--------------------------------------------------------------------------------------*/
/* Set the PWM1 Channel 0 as PWM output function. */
/*--------------------------------------------------------------------------------------*/
/* Assume PWM output frequency is 1500Hz and duty ratio is 30%, user can calculate PWM settings by follows.
duty ratio = (CMR+1)/(CNR+1)
cycle time = CNR+1
High level = CMR+1
PWM clock source frequency = PLL = 72000000
(CNR+1) = PWM clock source frequency/prescaler/PWM output frequency
= 72000000/2/1500 = 24000
(Note: CNR is 16 bits, so if calculated value is larger than 65536, user should increase prescale value.)
CNR = 23999
duty ratio = 30% ==> (CMR+1)/(CNR+1) = 30%
CMR = 7199
Prescale value is 1 : prescaler= 2
*/
/*Set counter as down count*/
PWM1->CTL1 = (PWM1->CTL1 & ~PWM_CTL1_CNTTYPE0_Msk) | 0x1;
/*Set PWM Timer clock prescaler*/
PWM_SET_PRESCALER(PWM1, 0, 1); // Divided by 2
/*Set PWM Timer duty*/
PWM_SET_CMR(PWM1, 0, 7199);
/*Set PWM Timer period*/
PWM_SET_CNR(PWM1, 0, 23999);
/* Set waveform generation */
PWM1->WGCTL0 = 0x00010000;
PWM1->WGCTL1 = 0x00020000;
/* Enable PWM Output path for PWM1 channel 0 */
PWM1->POEN |= PWM_CH_0_MASK;
/* Enable Timer for PWM1 channel 0 */
PWM1->CNTEN |= PWM_CH_0_MASK;
/*--------------------------------------------------------------------------------------*/
/* Configure PDMA peripheral mode form PWM to memory */
/*--------------------------------------------------------------------------------------*/
/* Open Channel 0 */
PDMA->CHCTL |= 0x1;
PDMA->DSCT[0].CTL &= ~(PDMA_DSCT_CTL_TXCNT_Msk | PDMA_DSCT_CTL_TXWIDTH_Msk);
/* transfer width is half word(16 bit) and transfer count is 4 */
PDMA->DSCT[0].CTL |= ((0x1 << PDMA_DSCT_CTL_TXWIDTH_Pos) | ((4 - 1) << PDMA_DSCT_CTL_TXCNT_Pos));
/* Set source address as PWM capture channel PDMA register(no increment) and destination address as g_u32Count array(increment) */
PDMA->DSCT[0].SA = (uint32_t)&PWM1->PDMACAP2_3;
PDMA->DSCT[0].DA = (uint32_t)&g_u32Count[0];
PDMA->DSCT[0].CTL &= ~(PDMA_DSCT_CTL_SAINC_Msk | PDMA_DSCT_CTL_DAINC_Msk);
PDMA->DSCT[0].CTL |= ((0x3 << PDMA_DSCT_CTL_SAINC_Pos) | (0x2 << PDMA_DSCT_CTL_DAINC_Pos));
/* Select PDMA request source as PWM RX(PWM1 channel 2 should be PWM1 pair 2) */
PDMA->REQSEL0_3 = (PDMA->REQSEL0_3 & ~PDMA_REQSEL0_3_REQSRC0_Msk) | (0xF << PDMA_REQSEL0_3_REQSRC0_Pos);
/* Select PDMA operation mode as basic mode */
PDMA->DSCT[0].CTL = (PDMA->DSCT[0].CTL & ~PDMA_DSCT_CTL_OPMODE_Msk) | 0x1;
/* Set PDMA as single request type for PWM */
PDMA->DSCT[0].CTL = (PDMA->DSCT[0].CTL & ~(PDMA_DSCT_CTL_TXTYPE_Msk)) | (0x1 << PDMA_DSCT_CTL_TXTYPE_Pos);
PDMA->INTEN |= (1 << 0);
NVIC_EnableIRQ(PDMA_IRQn);
/* Enable PDMA for PWM1 channel 2 capture function, and set capture order as falling first */
PWM1->PDMACTL &= ~(PWM_PDMACTL_CHSEL2_3_Msk | PWM_PDMACTL_CAPORD2_3_Msk);
/* Select capture mode as both rising and falling to do PDMA transfer */
PWM1->PDMACTL |= (PWM_PDMACTL_CAPMOD2_3_Msk | PWM_PDMACTL_CHEN2_3_Msk);
/*--------------------------------------------------------------------------------------*/
/* Set the PWM1 channel 2 for capture function */
/*--------------------------------------------------------------------------------------*/
/* If input minimum frequency is 1500Hz, user can calculate capture settings by follows.
Capture clock source frequency = PLL = 72000000 in the sample code.
(CNR+1) = Capture clock source frequency/prescaler/minimum input frequency
= 72000000/2/1500 = 24000
(Note: CNR is 16 bits, so if calculated value is larger than 65536, user should increase prescale value.)
CNR = 0xFFFF
(Note: In capture mode, user should set CNR to 0xFFFF to increase capture frequency range.)
*/
/*Set counter as down count*/
PWM1->CTL1 = (PWM1->CTL1 & ~PWM_CTL1_CNTTYPE2_Msk) | (0x1 << PWM_CTL1_CNTTYPE2_Pos);
/*Set PWM1 channel 2 Timer clock prescaler*/
PWM_SET_PRESCALER(PWM1, 2, 1); // Divided by 2
/*Set PWM1 channel 2 Timer period*/
PWM_SET_CNR(PWM1, 2, 0xFFFF);
/* Enable capture function */
PWM1->CAPCTL |= PWM_CAPCTL_CAPEN2_Msk;
/* Enable falling capture reload */
PWM1->CAPCTL |= PWM_CAPCTL_FCRLDEN2_Msk;
// Start
PWM1->CNTEN |= PWM_CNTEN_CNTEN2_Msk;
/* Wait until PWM1 channel 2 Timer start to count */
while((PWM1->CNT[2]) == 0);
/* Enable capture input path for PWM1 channel 2 */
PWM1->CAPINEN |= PWM_CAPINEN_CAPINEN2_Msk;
/* Capture the Input Waveform Data */
//CalPeriodTime(PWM1, 2);
CalPeriodTime();
/*---------------------------------------------------------------------------------------------------------*/
/* Stop PWM1 channel 0 (Recommended procedure method 1) */
/* Set PWM Timer loaded value(Period) as 0. When PWM internal counter(CNT) reaches to 0, disable PWM Timer */
/*---------------------------------------------------------------------------------------------------------*/
/* Set PWM1 channel 0 loaded value as 0 */
PWM1->PERIOD[0] = 0;
/* Wait until PWM1 channel 0 Timer Stop */
while((PWM1->CNT[0] & PWM_CNT_CNT_Msk) != 0);
/* Disable Timer for PWM1 channel 0 */
PWM1->CNTEN &= ~PWM_CNTEN_CNTEN0_Msk;
/* Disable PWM Output path for PWM1 channel 0 */
PWM1->POEN &= ~PWM_CH_0_MASK;
/*---------------------------------------------------------------------------------------------------------*/
/* Stop PWM1 channel 2 (Recommended procedure method 1) */
/* Set PWM Timer loaded value(Period) as 0. When PWM internal counter(CNT) reaches to 0, disable PWM Timer */
/*---------------------------------------------------------------------------------------------------------*/
/* Disable PDMA NVIC */
NVIC_DisableIRQ(PDMA_IRQn);
/* Set loaded value as 0 for PWM1 channel 2 */
PWM1->PERIOD[2] = 0;
/* Wait until PWM1 channel 2 current counter reach to 0 */
while((PWM1->CNT[2] & PWM_CNT_CNT_Msk) != 0);
/* Disable Timer for PWM1 channel 2 */
PWM1->CNTEN &= ~PWM_CNTEN_CNTEN2_Msk;
/* Disable Capture Function and Capture Input path for PWM1 channel 2*/
PWM1->CAPCTL &= ~PWM_CAPCTL_CAPEN2_Msk;
PWM1->CAPINEN &= ~PWM_CAPINEN_CAPINEN2_Msk;
/* Clear Capture Interrupt flag for PWM1 channel 2 */
PWM1->CAPIF = PWM_CAPIF_CFLIF2_Msk;
PDMA->CHCTL = 0;
}
}
int32_t main (void)
{
/* Init System, IP clock and multi-function I/O
In the end of SYS_Init() will issue SYS_LockReg()
to lock protected register. If user want to write
protected register, please issue SYS_UnlockReg()
to unlock protected register if necessary */
SYS_Init();
/* Init UART to 115200-8n1 for print message */
UART_Open(UART0, 115200);
printf("\nThis sample code will output PWM channel 0 to with different duty\n");
printf(", and enable/disable Precise Center Align function.\n");
printf("Polling 1 period interrupt flag to get PWM channel 0 output.\n");
// PWM-Timer 0 enable and Auto-reload
PWM->CTL = PWM_CTL_CNTEN0_Msk | PWM_CTL_CNTMODE0_Msk;
PWM_SET_PRESCALER(PWM, 0, 1);
PWM_SET_DIVIDER(PWM, 0, PWM_CLK_DIV_1);
// Set the PWM aligned type
PWM_SET_ALIGNED_TYPE(PWM, 0, PWM_CENTER_ALIGNED);
// Enable PWM channel 0 output
PWM_EnableOutput(PWM, BIT0);
// Start
PWM_Start(PWM, BIT0);
/*
Precise Center Align and Center Align PWM channel 0 waveform of this sample shown below:
|<- CNR-(2*(CMR+1)) ->| CNR-(2*(CMR+1) = 401 -(2*(100+1)) CLKs
|<- CNR -( 2 *( CMR + 1)) ->| CNR-(2*(CMR+1) = 402 -(2*(99+1)) CLKs
|<- 2 *(CNR-CMR) clk ->| 2 * (CNR - CMR) = 2 * (401-100) CLKs
|<- 2 * (CNR-CMR) clk ->| 2 * (CNR - CMR) = 2 * (402-99) CLKs
________ ____________ ________ ____________ ________ ____________ ________ ____________
____| 7.96us |_8.08us_| 24.08us |_8.08us_| 8.08us |_8us_| 24.24us |_8us_| 7.96us |_8.08us_| 24.08us |_8.08us_| 8.08us |_8us_| 24.24us |_8us_
*/
while(1)
{
// Enable PWM Precise Center Aligned Type
PWM->PCACTL = PWM_PCACTL_PCAEN_Msk;
// PWM Channel 0 Output : duty = 7.96u, low = 8.08u
PWM_SET_CMR(PWM, 0, 100);
PWM_SET_CNR(PWM, 0, 401);
// Polling, Wait 1 period interrupt flags
while(PWM_GetPeriodIntFlag(PWM, 0) == 0);
PWM_ClearPeriodIntFlag(PWM, 0);
// Disable PWM Precise Center Aligned Type
PWM->PCACTL &= ~(PWM_PCACTL_PCAEN_Msk);
// PWM Channel 0 Output : duty = 24.08u, low = 8.08u
PWM_SET_CMR(PWM, 0, 100);
PWM_SET_CNR(PWM, 0, 401);
// Polling, Wait 1 period interrupt flags
while(PWM_GetPeriodIntFlag(PWM, 0) == 0);
PWM_ClearPeriodIntFlag(PWM, 0);
// Enable PWM Precise Center Aligned Type
PWM->PCACTL = PWM_PCACTL_PCAEN_Msk;
// PWM Channel 0 Output : duty = 8.08u, low = 8u
PWM_SET_CMR(PWM, 0, 99);
PWM_SET_CNR(PWM, 0, 402);
// Polling, Wait 1 period interrupt flags
while(PWM_GetPeriodIntFlag(PWM, 0) == 0);
PWM_ClearPeriodIntFlag(PWM, 0);
// Disable PWM Precise Center Aligned Type
PWM->PCACTL &= ~(PWM_PCACTL_PCAEN_Msk);
// PWM Channel 0 Output : duty = 24.24u, low = 8u
PWM_SET_CMR(PWM, 0, 99);
PWM_SET_CNR(PWM, 0, 402);
// Polling, Wait 1 period interrupt flags
while(PWM_GetPeriodIntFlag(PWM, 0) == 0);
PWM_ClearPeriodIntFlag(PWM, 0);
}
}