STM32 TIMer controlled pin output

[Valkan Pavlov]

Hey folks,

I need assistance with resetting an Analog Devices ADC. I need to generate high output for 1000 or 4000 ns from my Nucleo F401RE board.

As shown in the attached image, I need to set the pin low, then high for a specific duration, and then low again. I tried using TIM4 with Output Compare CH1 and One Pulse Mode, as well as other modes, but it does not seem to provide the required low-high-low sequence. At least, I was unable to achieve this.

I had slightly more success with PWM generation on CH1, where the curve appears correct, but it is repetitive. However I can stop the timer but the goes high again.

Could someone with relevant experience provide a roadmap? Any advice would be greatly appreciated.

Thanks!

[Saket_Om]

Hello @Valkan Pavlov 

Please refer to the example Projects/STM32446E_EVAL/Examples/TIM/TIM_OnePulse to generate one pule signal. 

This example shows how to use the TIM peripheral to generate a single pulse when a rising edge of an external signal is received on the timer Input pin.