1.1.2 • Published 5 years ago
raspihats v1.1.2
raspihats
Node.js package for interfacing Raspberry Pi add-on boards located at raspihats.com
Installation
$ npm install raspihats --saveI2C clock stretch timeout
It's important for the I2C clock stretch timeout to have the right value before issuing requests to a I2C-HAT, cd to 'node_modules/raspihats' and run the following command to set the right clock stretch timeout:
$ sudo npm run i2c_clks_timeoutI2C-HAT usage example
var raspihats = require('raspihats');
var DI6acDQ6rly = raspihats.i2cHats.DI6acDQ6rly;
var b = new DI6acDQ6rly(0x60);
// All the following methods will issue a request and get a response from the board over the I2C bus.
b.getName(); // reads board name
b.getFirmwareVersion(); // reads firmware version
//b.reset(); // resets the board, wait at least 1ms after reset before issuing another request
b.getStatus(); // reads status word, bits [0: power on reset, 1: software reset, 2: watchdog reset]
// Digital Inputs
b.DI.getValue(); // read all digital input channels
b.DI.getChannel(0); // read single digital input channel
// Digital Outputs
b.DQ.setValue(0x02); // write all digital output channels
b.DQ.setChannel(0, true); // write single digital output channel
b.DQ.getValue(); // read all digital output channels
b.DQ.getChannel(0); // read single digital output channelRelease History
1.0.0 Initial release
Supported functionality:
- Basic(read board name, read firmware version, read status word, reset)
- Communication WatchDog(read/write period)
- Digital Inputs(read value, read channel, read channel counter, reset channel counter)
- Digital Outputs(read/write value, read/write channel, read/write PowerOnValue, read/write SafetyValue)
Supported boards:
1.1.0 Added DQ8rly
Added boards:
1.1.1 Small fix
Modified exception message thrown if an unexpected board is found at the desired address.
1.1.2 Updated i2c-bus dependency version and small fix
Now using i2c-bus@5.2.0, and using Buffer.alloc instead of new Buffer.
License
MIT