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This code allows Wire.begin() to assign the default values of SDA, and SCL only if they have not been previously configured. Arduino libraries that use Wire() usually re-init the I2C interface in their initialization code with a call to Wire.begin(). If a user app sets custom pins assignment in setup(); These assignments will be overwritten with the default values whenever Wire.begin() is called.
Arduino core for ESP32 WiFi chip
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Contents
- Development Status
- Installation Instructions
- Decoding Exceptions
- Issue/Bug report template
- ESP32Dev Board PINMAP
Development Status
Most of the framework is implemented. Most noticable is the missing analogWrite. While analogWrite is on it's way, there are a few other options that you can use:
- 16 channels LEDC which is PWM
- 8 channels SigmaDelta which uses SigmaDelta modulation
- 2 channels DAC which gives real analog output
Installation Instructions
- Using Arduino IDE
- Using PlatformIO
- Building with make
- Using as ESP-IDF component
Decoding exceptions
You can use EspExceptionDecoder to get meaningful call trace.
Issue/Bug report template
Before reporting an issue, make sure you've searched for similar one that was already created. Also make sure to go through all the issues labelled as for reference.
Finally, if you're sure no one else had the issue, follow the ISSUE_TEMPLATE while reporting any issue.
ESP32Dev Board PINMAP
Hint
Sometimes to program ESP32 via serial you must keep GPIO0 LOW during the programming process