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#define USE_HSI_CLOCK 1
void setup() {
// put your setup code here, to run once:
pinMode(PA0,OUTPUT);
pinMode(PA1,OUTPUT);
}
void loop() {
// put your main code here, to run repeatedly:
digitalWrite(PA0,HIGH);
digitalWrite(PA1,HIGH);
delay(1000);
digitalWrite(PA0,LOW);
digitalWrite(PA1,LOW);
delay(1000);
}