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Add Wire:setPins(sda, scl)

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Fixes: https://github.com/espressif/arduino-esp32/issues/3779
This commit is contained in:
me-no-dev 2020-07-19 02:21:15 +03:00
parent b92c58d74b
commit 4d98cea085
2 changed files with 15 additions and 0 deletions
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11
libraries/Wire/src/Wire.cpp
View File

@ -58,6 +58,17 @@ TwoWire::~TwoWire()
} }
} }
bool TwoWire::setPins(int sdaPin, int sclPin)
{
if(i2c) {
log_e("can not set pins if begin was already called");
return false;
}
sda = sdaPin;
scl = sclPin;
return true;
}
bool TwoWire::begin(int sdaPin, int sclPin, uint32_t frequency) bool TwoWire::begin(int sdaPin, int sclPin, uint32_t frequency)
{ {
if(sdaPin < 0) { // default param passed if(sdaPin < 0) { // default param passed

4
libraries/Wire/src/Wire.h
View File

@ -67,6 +67,10 @@ protected:
public: public:
TwoWire(uint8_t bus_num); TwoWire(uint8_t bus_num);
~TwoWire(); ~TwoWire();
//call setPins() first, so that begin() can be called without arguments from libraries
bool setPins(int sda, int scl);
bool begin(int sda=-1, int scl=-1, uint32_t frequency=0); // returns true, if successful init of i2c bus bool begin(int sda=-1, int scl=-1, uint32_t frequency=0); // returns true, if successful init of i2c bus
// calling will attemp to recover hung bus // calling will attemp to recover hung bus