I'm using an ATmega4808 32 Pin. I have 2 LEDs connected to the pins PA0 and PA1. I want to set both high. Unfortunatly only the PA1 LED is on.
I figured out the PA0 Pin could be set to EXTCLK by default. If this is the problem i can't find the solution to change the port to GPIO.
int main(int argc, char** argv) {
PORTA.DIRSET = PIN0_bm; // Config PA0 as output
PORTA.DIRSET = PIN1_bm; // Config PA1 as output
PORTA.OUTSET = PIN0_bm; // Set Pin PA0 to HIGH
PORTA.OUTSET = PIN1_bm; // Set Pin PA1 to HIGH
while(1){
}
return (EXIT_SUCCESS);
}
The configuration of PIN0 is lost by writing again to registers PORTA.DIRSET
and PORTA.OUTSET
.
Try using | (bitwise OR)
| (bitwise OR)
to not discard PIN0 config:
PORTA.DIRSET = PIN0_bm; // Config PA0 as output
PORTA.DIRSET |= PIN1_bm; // Config PA1 as output
PORTA.OUTSET = PIN0_bm; // Set Pin PA0 to HIGH
PORTA.OUTSET |= PIN1_bm; // Set Pin PA1 to HIGH
Or, to set them at the same time:
PORTA.DIRSET = PIN0_bm | PIN1_bm; // Config PA0 and PA1 as output
PORTA.OUTSET = PIN0_bm | PIN1_bm; // Set Pin PA0 and PA1 to HIGH
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