STM32CubeMX learning - (2) Timer

The timer interrupt function

Timer Configuration

• Select TIM6 in Timers, check Activated.
• Set parameters:
  the Prescaler = 83, the division ratio, the frequency count = APB1 / psc.
  Mode = the UP Counter,
  Counter = Period 499, auto-reload value.
  = PRELOAD reload the Enable-Auto,
  the Trigger the Event Selection = the Reset.
• Enable interrupt vector table
  check Enable NVIC Settings in.
• Modify the program
  click the generated code, modify the code. Timer configuration has been configured, simply run this program to open a timer.

HAL_TIM_Base_Start_IT(&htim6);

The foregoing is provided for the timing frequency is calculated into the interrupt 0.5ms. Specific interrupt handler as follows:

//回调函数
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
	if(htim==&htim6)
	{
		/*********APP********/
	}
}

So far timer interrupt function is complete.

Timer PWM Output Configuration

• Timers selected in TIM3, and the Channel1 Channel2 into a PWM Generation CHx mode.
• Parameter Settings set parameters:
  the Prescaler = 83, the division ratio, the frequency count = APB1 / psc.
  Mode = the UP Counter,
  Counter = Period 1000, auto-reload value.
  Master / = the Disable the Slave Mode,
  Auto-reload the Enable = PRELOAD,
  the Trigger the Event Selection = the Reset,
  the PWM Channel Generation X set:
  Mode = the PWM MODE. 1
  Pulse 0 =
  Fast Mode the Disable =
  CH Polarity = High, the output level of the polarity.
• Modify the code necessary to add the following code in the code, the PWM output opening,

	HAL_TIM_PWM_Start_IT(&htim3,TIM_CHANNEL_1);
	HAL_TIM_PWM_Start_IT(&htim3,TIM_CHANNEL_2);

Add the following code to set the duty ratio = 700/1000 = 70%.

__HAL_TIM_SetCompare(&htim3,TIM_CHANNEL_1,700);
__HAL_TIM_SetCompare(&htim3,TIM_CHANNEL_2,700);

Thus, to the corresponding output pin PWM waveform.