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I2C pin settings bugfix (8266)

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* It was not possible any more to set I2C pins back to "-1", to disable I2C.
This fixes the problem.
* HW_PIN_SDA / HW_PIN_SCL may contain "-1" --> use PIN numbers directly on 8266 (I2C pins cannot be changed any way on 8266)
This commit is contained in:
Frank
2023-01-11 22:26:35 +01:00
parent 49bb9be12c
commit 1e8fcfb0aa
3 changed files with 23 additions and 7 deletions
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14
wled00/pin_manager.cpp
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@@ -523,7 +523,10 @@ bool PinManagerClass::joinWire() { // shortcut in case no parameters provided
return joinWire(i2c_sda, i2c_scl);
#else
// ESP8266: I2C pins are fixed
return joinWire(HW_PIN_SDA, HW_PIN_SCL);
if ((i2c_sda < 0) || (i2c_scl < 0))
return joinWire(i2c_sda, i2c_scl); // special case: -1 = disable i2c
else
return joinWire(4, 5); // normal case - use HW pins -> SDA = 4, SCL = 5
#endif
}
@@ -568,9 +571,10 @@ bool PinManagerClass::joinWire(int8_t pinSDA, int8_t pinSCL) {
#ifdef ARDUINO_ARCH_ESP32 // ESP32 - i2c pins can be mapped to any GPIO
wireIsOK = Wire.setPins(pinSDA, pinSCL); // this will fail if Wire is initialised already (i.e. Wire.begin() called prior)
#else // 8266 - I2C pins are fixed
if((pinSDA != HW_PIN_SDA) || (pinSCL != HW_PIN_SCL)) {
if((pinSDA != 4) || (pinSCL != 5)) { // fixed PINS: SDA = 4, SCL = 5
DEBUG_PRINT(F("PIN Manager: warning ESP8266 I2C pins are fixed. please use SDA="));
DEBUG_PRINTF("%d, SCL=%d !\n",HW_PIN_SDA, HW_PIN_SCL);
DEBUG_PRINTF("%d, SCL=%d !\n",4, 5);
return(false);
}
#endif
if (wireIsOK == false) {
@@ -583,7 +587,9 @@ bool PinManagerClass::joinWire(int8_t pinSDA, int8_t pinSCL) {
if (wireIsOK == false) {
USER_PRINTLN(F("PIN Manager: warning - wire.begin failed!"));
} else {
USER_PRINTLN(F("PIN Manager: wire.begin successfull."));
USER_PRINT(F("PIN Manager: wire.begin successfull! "));
USER_PRINT(F("I2C bus is active. SDA="));
USER_PRINTF("%d SCL=%d.\n", pinSDA, pinSCL);
}
#ifdef ARDUINO_ARCH_ESP32S3