I'm using the touch pad peripheral and successfully setting up interrupts with a threshold value determined by reading the touch counter at startup. I'm initialising the peripheral with the following code:
Code: Select all
void touch_handler(void*);
...
touch_pad_init();
uint16_t val, average = 0;
const uint16_t samples = 5;
for(int ii = 0; ii < samples; ++ii) {
touch_pad_read(TOUCH_PAD_NUM7, &val);
average += val;
}
average /= samples;
touch_pad_config(TOUCH_PAD_NUM7, average * 2 / 3);
touch_pad_isr_handler_register(touch_handler, NULL, 0, NULL);
Set up like this, I get repeated interrupts about every 15ms when the pad is touched. Is it possible to get an interrupt when the pad becomes untouched? And how would you distinguish between them?
