41 lines
792 B
C
41 lines
792 B
C
|
|
// Makros for simplified single pin io access.
|
|
|
|
#define PORT_(port) PORT ## port
|
|
#define DDR_(port) DDR ## port
|
|
#define PIN_(port) PIN ## port
|
|
|
|
#define PORT(port) PORT_(port)
|
|
#define DDRR(port) DDR_(port)
|
|
#define PINN(port) PIN_(port)
|
|
|
|
#define SET_DDR(p) DDRR(p##_PORT) |= (1<<p##_BIT)
|
|
#define CLEAR_DDR(p) DDRR(p##_PORT) &= ~(1<<p##_BIT)
|
|
#define OUTPUT_ON(p) PORT(p##_PORT) |= (1<<p##_BIT)
|
|
#define OUTPUT_OFF(p) PORT(p##_PORT) &= ~(1<<p##_BIT)
|
|
#define INPUT(p) ((PINN(p##_PORT) & (1<<p##_BIT)) != 0)
|
|
|
|
|
|
/*
|
|
Use Like this:
|
|
|
|
|
|
#define LED_PORT C
|
|
#define LED_BIT 7
|
|
|
|
#define SWITCH_PORT B
|
|
#define SWITCH_BIT 0
|
|
|
|
int main(){
|
|
SET_DDR(LED); //set to output
|
|
OUTPUT_ON(SWITCH); //turn on pullup
|
|
|
|
if(INPUT(SWITCH)){
|
|
OUTPUT_ON(LED);
|
|
}else{
|
|
OUTPUT_OFF(LED);
|
|
}
|
|
}
|
|
|
|
*/
|