xloc / gist_stm32-triggered-n-pulse

About how to generate N pulses at triggering

gist: STM32 triggered N pulse

About

• how to use an advanced timer (TIM1 for F401) to generate N pulses output when receiving a trigger, and
• How to generate PWM using TIMs

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To output PWM

1. Set Mode: Channel? PWM Generation
2. Counter setting: Prescaler/Counter Period = ?
3. PWM Generation Channel ? > Pulse = ?
4. HAL_TIM_PWM_Start(&htim?, TIM_CHANNEL_?)
5. BE CAREFUL WITH GPIO max speed

To output N pulses after trigger signal

1. Slave Mode: Trigger Mode
2. Trigger Source: TI1FP1: TI1(Timer input 1) after FP(filter and polarity selection)
3. Channel 2: PWM Generation CH2
4. One Pulse Mode: Enable
5. Counter Setting > Prescaler/Counter Period = ?
6. Counter Setting > Repeatition Counter = N pulse
7. Trigger > Polarity/Filter
8. PWM Generation Channel 2 > Pulse = ?
9. HAL_TIM_PWM_Start(&htim?, TIM_CHANNEL_?)
10. BE CAREFUL WITH GPIO max speed

Reference materials

Datasheet stm32f401re.pdf

F401 resources reference manual dm00096844...

Cortex M4 Programming Manual dm00046982...