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Preserver custom pin assigments with Wire.begin(custom_sda,custom_scl) #1239

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Merged
merged 1 commit into from
Apr 6, 2018
Merged

Preserver custom pin assigments with Wire.begin(custom_sda,custom_scl) #1239

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20 changes: 14 additions & 6 deletions libraries/Wire/src/Wire.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -46,19 +46,27 @@ TwoWire::TwoWire(uint8_t bus_num)

void TwoWire::begin(int sdaPin, int sclPin, uint32_t frequency)
{
if(sdaPin < 0) {
if(sdaPin < 0) { // default param passed
if(num == 0) {
sdaPin = SDA;
if(sda==-1) sdaPin = SDA; //use Default Pin
else sdaPin = sda; // reuse prior pin
} else {
return;
if(sda==-1) {
log_e("no Default SDA Pin for Second Peripheral");
return; //no Default pin for Second Peripheral
} else sdaPin = sda; // reuse prior pin
}
}

if(sclPin < 0) {
if(sclPin < 0) { // default param passed
if(num == 0) {
sclPin = SCL;
if(scl==-1) sclPin = SCL; // use Default pin
else sclPin = scl; // reuse prior pin
} else {
return;
if(scl==-1){
log_e("no Default SCL Pin for Second Peripheral");
return; //no Default pin for Second Peripheral
} else sclPin = scl; // reuse prior pin
}
}

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