STM32F446 TIMER2 Ooutput COmpare PA3 1MHz square wave

gistfile1.txt

void HAL_AFE_Init1MHZ_Clock(void){
	
	//RCC_AHB1PeriphClockCmd(HAL_DS_AFE_CLK1MHZ_PORT_GPIO_AHB_BIT, ENABLE);
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
	GPIO_Init(HAL_DS_AFE_CLK1MHZ_PORT, (GPIO_InitTypeDef *) &HAL_DS_1MHz_CLK_GpioConfiguration);
	GPIO_PinAFConfig(HAL_DS_AFE_CLK1MHZ_PORT, HAL_DS_AFE_CLK1MHZ_AF_PINSOURCE ,GPIO_AF_TIM2);
	
	TIM_TimeBaseInitTypeDef  TIM2_TimeBaseStructure;
	TIM2_TimeBaseStructure.TIM_Period = 21;
  TIM2_TimeBaseStructure.TIM_Prescaler = 0;
  TIM2_TimeBaseStructure.TIM_ClockDivision = 0;
  TIM2_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
	TIM_TimeBaseInit(TIM2, &TIM2_TimeBaseStructure);
	
	/* Prescaler configuration */ 
  TIM_PrescalerConfig(TIM2, 1, TIM_PSCReloadMode_Immediate);
	
	TIM_OCInitTypeDef  TIM_OCInitStructure;
  /* always initialise local variables before use */
  TIM_OCStructInit (&TIM_OCInitStructure);
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Toggle;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = 1;
  TIM_OC4Init (TIM2, &TIM_OCInitStructure);
  TIM_OC4PreloadConfig(TIM2, TIM_OCPreload_Enable);

  /* TIM2 enable counter */
  TIM_Cmd(TIM2, ENABLE);
}