STM8S103F external interrupt

[joybox2007]

Posted on July 01, 2018 at 21:32

Hi!

I use a STM8S103F and I need to process external interrupts on PINs2,3 of PORT D by both fronts. That's my initialization code:

GPIO_Init(GPIOD, GPIO_PIN_2 | GPIO_PIN_3, GPIO_MODE_IN_PU_IT);

EXTI_SetExtIntSensitivity(EXTI_PORT_GPIOD, EXTI_SENSITIVITY_RISE_FALL);

enableInterrupts();

The problem is when I connect one of this pins to the ground the program goes to interrupt function and don't leave it while I don't release the pin. What I did wrong?

[henry.dick]

Posted on July 03, 2018 at 14:12

1. somehow it went from edge triggered to level trigger?

2. faulty switch?

3. status flag not cleared?

...

[joybox2007]

Posted on July 05, 2018 at 16:48

1. Yes, it's look like level trigger (low level). But I use flag 

EXTI_SENSITIVITY_RISE_FALL so I don't understand how it might be.

2. F

aulty switch is impossible because of I use a jumper to short pin to ground. 

3. I did't find in reference manual any status flags to be cleared in STM8S (only in STM8L)

The problem is still did't solved.