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Add instructions for patching i2cdev and mpu6050

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This commit is contained in:
David Todd (c0de) 2018-07-05 03:00:44 -05:00
parent 1cea035545
commit a5be50ec53
1 changed files with 28 additions and 2 deletions
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README.md
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@ -29,8 +29,34 @@ Install these to your sketchbook's `libraries` folder, usually located in `YOUR
* [i2cdevlib](https://github.com/jrowberg/i2cdevlib)
**Note** Arduino IDE was complaining about i2cdevlib being invalid as the installation instructions are a bit unclear.
I found that copying the `I2Cdev` and `MPU6050` folders to the libraries folder from the Arduino folder seems to *kinda* work.
Perhaps I have the wrong library, because I get compile errors when trying to use either `I2Cdev` or `MPU6050` from the above source.
It seems that the ESP32 is not officially supported for use with these libraries, and I had to apply a patch ([#367](https://github.com/jrowberg/i2cdevlib/pull/367)) to get no compile errors.
### Patching I2Cdev and MPU6050 Libraries
1. Download i2cdevlib and extract the zip file
2. Inside the i2cdevlib/Arduino, copy `I2Cdev` and `MPU6050` folders to your `libraries` folder
3. Edit `I2Cdev/I2Cdev.cpp`, and immedietly under `#include "I2Cdev.h"`, add the following
```
#ifdef ARDUINO_ARCH_ESP32
#define BUFFER_LENGTH I2C_BUFFER_LENGTH
#endif
```
4. Edit `MPU6050/MPU6050_6Axis_MotionApps20.h` and add the following right above the `DEBUG` section
```
#ifndef ARDUINO_ARCH_ESP32
typedef void prog_void;
typedef char prog_char;
typedef unsigned char prog_uchar;
typedef int8_t prog_int8_t;
typedef uint8_t prog_uint8_t;
typedef int16_t prog_int16_t;
typedef uint16_t prog_uint16_t;
typedef int32_t prog_int32_t;
typedef uint32_t prog_uint32_t;
#endif
```
5. Restart Arduino
There's a whole bunch of other commits in here, but this seems mostly to be a mix of: feature adding, bug fixing, and various other changes that may or may not be related. Feel free to experiment with these at your own discretion.
## Kickstarter - Success
This was a [Make100 Kickstarter](https://www.kickstarter.com/projects/idlehandsdev/pixo-pixel-an-esp32-based-iot-rgb-display-for-make) that was recently fulfilled