This library provides a good interface to access the PCA9635 chip and provides a pallete to normalize the minimum and maximum brightness for different color LED's. The example app will flash all of the output pins, then flash them one at a time in succession. To do: Add user adjustable pallets. Copyright (c) 2019 Wade Ryan
- Designed for LED’s. No resitor required for most ultra bright LED's
- Each individual LED brightness can be set via PWM settings
- PWM output can be used with LN298
- High speed 97 kHz clock which prevents LED flickering
- 7 hardware address pins allow 126 devices to be connected to the same I2C-bus
- Comes in very compact TSSOP28 package
- Cousin to pca 9685servo driver
- No DIP package; Currently only comes in TSSOP28 package
- More complex than mcp23017
- No input channels (but is that really a disadvantage?)
- No CLI (yet)
- Not for use with individually Addressable LED's
On your Raspberry Pi, please use the raspi-config program to enable the I2C interface. Then use the gpio command to make sure your i2c devices can be found.
$ sudo raspi-config
$ gpio i2cd
To compile this library, navigate into the src folder and use the make utility to compile and install the library.
$ cd [project folder]
$ cd src
$ make && sudo make install
Complie your applications using these command line arguments: -lwiringPi -lwiringPiADS1115rpi
To run the example program, nagaviate into the example folder and use make to compile the program.
$ cd ../example
$ make
$ ./flashlight -a 0f
$ initialization complete, pca9635 handle=4
$ .0123456789abcdef
$ .0123456789abcdef
$ .0123456789abcdef
$ (etc.)
https://www.nxp.com/docs/en/data-sheet/PCA9635.pdf
