使用STM32F334的HRTIM產生Single PWM

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福留爸爸发布时间：2017-8-26 19:35

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以下代碼我是使用設定register方式來完成,希望可以用STM32F334來實現數字電源控制，我會慢慢分享STM32F334不同PWM模式，ADC取樣，閉迴路控制的代碼!! 敬請期待!

void HRTIM_CLK_Config(void)
{
/* Initialize the HRTIM clock and DLL */
RCC_CFGR3.bits.HRTIM1SW = 1;       //PLL vco output (running up to 144 MHz)
RCC_APB2ENR.bits.HRTIM1EN = 1;    //Enable HRTIM clock

HRTIM_DLLCR.bits.CALRTE = 3;
HRTIM_DLLCR.bits.CALEN = 1;

while(!HRTIM_ISR.bits.DLLRDY);    //Wait calibration completion
}

void HRTIM_SinglePWM_Config(void)
{
HRTIM_TIMACR.bits.CKPSCx = 0;    // 144MHz * 32
HRTIM_TIMACR.bits.CONT = 1;
HRTIM_PERAR.all  = 46080;          // Switch frequency => 144MHz * 32 / 100KHz = 46080
HRTIM_CMP1AR.all = 46080/2;       // Duty = 50%
HRTIM_SETA1R.bits.PER  = 1;
HRTIM_RSTA1R.bits.CMP1 = 1;

HRTIM_MCR.bits.TACEN = 1;
HRTIM_OENR.bits.TA1OEN = 1;
}

void HRTIM_Outputs_Config(void)
{
/* Enable GPIOA clock for timer A outputs */
RCC_AHBENR.bits.IOPAEN = 1;

/* Configure HRTIM output: TA1 (PA8) */
GPIOA_MODER.bits.MODER8    = GPIO_Mode_AF;
GPIOA_OTYPER.bits.OT8          = GPIO_OType_PP;
GPIOA_OSPEEDR.bits.OSPEEDR8  = GPIO_Speed_50MHz;
GPIOA_PUPDR.bits.PUPDR8    = GPIO_PuPd_NOPULL;
GPIOA_AFRH.bits.AFR8       = GPIO_AF_13;

}

int main(void)
{
SystemInit();
HRTIM_Outputs_Config();
HRTIM_CLK_Config();
HRTIM_SinglePWM_Config();

while(1)
{

}
}