KW41Z interrupts issue

satsok_n — Sun, 17 Nov 2019 13:28:17 GMT

I am working on a project with KW41Z. I am trying to get 2 external interrupts from SW3 and SW4 buttons. When I tried this example it didn't work at all.

Sometimes I get a print on button push SW3 but it doesn't work when I push the button again. I cant understand why the same code sometimes works and sometimes doesn't.

Furthermore I saw this post Input interrupt Handler example on KW41Z and I cant get both buttons working. Shouldn't this be working if I add these lines of code (since both buttons have the same handler)?

PORT_SetPinInterruptConfig(BOARD_SW_PORT, BOARD_SW4_GPIO_PIN, kPORT_InterruptFallingEdge);

GPIO_PinInit(BOARD_SW_GPIO, BOARD_SW4_GPIO_PIN, &sw_config);

Re: KW41Z interrupts issue

Robin_Shen — Tue, 19 Nov 2019 08:12:55 GMT

Hi kostas,

Please refer the init codes of PTC4. If not the PTC5 is disable by default.

GPIO_GetPinsInterruptFlags should be use to check which SW caused interrupt, and then clear the corresponding interrupt flag.

Best Regards,

Robin

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

Kinetis Microcontrollers中的主题 KW41Z interrupts issue

KW41Z interrupts issue

Re: KW41Z interrupts issue