Map Timer TRGO to GPIO

[freppa]

Posted on January 18, 2018 at 09:42

Is it possible to map timer trigger output signal to a GPIO pin. Typical use-case for my application is to trigger an external adc with the same signal which is used to trigger internal ADC on MCU. The MCU in question is F303.

[waclawek.jan]

Posted on January 18, 2018 at 10:22

Not directly. You can feed it as TRGI to other timer (if there's such link and the slave timer is available), and use it to trigger a one-pulse process which some of the outputs set to PWM. There will be some latency.

It may be much simpler to use those ADC triggers which are sourced in TIMx_CCy, e.g. regular EXT0 (EXTSEL = 0) triggers from TIM1_CC1 event  event.

JW