cp11 ex5 MasterSlave timer

[kekkoian]

hi, i am running example 5 of cp 11.
I have an STM32F401RE.
the example works, the led PA5 is blinking after the trigger from AVDD.
But the problem is that after i download the firmware, the led is lit ON fixed and than after the trigger it starts blinking.
I would like the led to be OFF at the beginning but i don t know how to to do it, already tried many things.
I already set filter high and pull down of GPIO PA8 for channel one of TIM1 as suggested in the book.

Many thanks

[kekkoian]

ok i fixed with HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_SET);

in MX_GPIO_Init function

but really is not clear why i need to SET the GPIO in the init function to have it OFF.

• This reply was modified 3 years, 9 months ago by kekkoian.

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