how to set 2 separate callbacks on the same pin, for pin raise and fall in zephyr

[ziv123]

hello Nordic

i am working with nrf52840, with zephyr 2.6.9, ncs 1.7.1

i want to have an interrupt on a pin toggle and have a callback for up and one for down

i configure the pin as follows:

ret = gpio_pin_interrupt_configure(button,
					   SW0_GPIO_PIN,
					   GPIO_INT_EDGE_BOTH);

but initialising the callback i don't see how i can create a different cb for each flag type

gpio_init_callback(&button_cb_data, button_pressed, BIT(SW0_GPIO_PIN));

any ideas as for how to achieve that without breaking the zephyr hw interface layer by using nrfx_gpio functions ?

hope to read from you soon

best regards

Ziv

[Priyanka]

Hi Ziv,

This is not possible to implement as the flags are configured per pin and not per callback. It is possible to add multiple callbacks for a single pin, but only one interrupt configuration can be used for the pin. But, you could try to use the GPIO_INT_EDGE_BOTH and check the pin state in the callback maybe.

You can take a look at few examples:

test callback

Gpio.h 

[ziv123]

hi Priyanka

Priyanka said:

you could try to use the GPIO_INT_EDGE_BOTH and check the pin state in the callback maybe.

that is what i have done but if i remember correct nrf sdk dose allow to have 2 callbacks on same pin one for ACTIVE_HIGH and one for ACTIVE_LOW 

i understand from your answer that it is not the case with zephyr

ok, thanks Priyanka