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change digitalWrite() #133

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change digitalWrite() #133

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23 changes: 10 additions & 13 deletions cores/arduino/wiring_digital.c
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Original file line number Diff line number Diff line change
Expand Up @@ -145,22 +145,19 @@ void digitalWrite(uint8_t pin, PinStatus val)
/* Get port */
PORT_t *port = digitalPinToPortStruct(pin);

/* Output direction */
if(port->DIR & bit_mask){

/* Set output to value */
if (val == LOW) { /* If LOW */
port->OUTCLR = bit_mask;
/* Set output to value */
if (val == LOW) { /* If LOW */
port->OUTCLR = bit_mask;

} else if (val == CHANGE) { /* If TOGGLE */
port->OUTTGL = bit_mask;
/* If HIGH OR > TOGGLE */
} else {
port->OUTSET = bit_mask;
}
} else if (val == CHANGE) { /* If TOGGLE */
port->OUTTGL = bit_mask;
/* If HIGH OR > TOGGLE */
} else {
port->OUTSET = bit_mask;
}

/* Input direction */
} else {
if(port->DIR & bit_mask){
/* Old implementation has side effect when pin set as input -
pull up is enabled if this function is called.
Should we purposely implement this side effect?
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