I want to use interrupt on GPIO4 for wakeup from sleep mode.
In different example codes of ADuCM330 there are some functions defined for specific interrupts. Whenever that interrupt happens , it go to that interrupt routine. E.g.
void GP_Tmr_Int_Handler(void) is defined for GP_Timer.
void ADC_Int_Handler(void) is defined for ADC interrupt.
My questions are as follow:
1: Which function is used for GPIO4 interrupt. ?
2: Does we need to enable GPIO4 interrupt from ISER0 as well.? If yes, then how to do so.?
3: For high level, how much voltage signal we need to give to GPIO4 to wakeup.? is it 3.3V or 5V.?
4: Similarly how can we use same port as a receiving pin for UART communication. We get some example code for UART transmission but still looking for some code of UART receiving.Please share it if possible..?