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