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I2C Capability #88

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cooltrooper opened this Issue Nov 11, 2012 · 9 comments

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Add the ability for I2C communication. Probably would only allow low level communication as devices vary significantly in the commands and addresses required for use.

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rwaldron commented Apr 14, 2013

This is built-in!

this.firmata.sendI2CWriteRequest( address, bytes );

this.firmata.sendI2CReadRequest( address, bytes, callback );

Let me know if this is what you were looking for—if not we can reopen for discussion :)

@rwaldron rwaldron closed this Apr 14, 2013

devth commented Feb 21, 2014

hey @rwaldron, is there anything for controlling an I2C LCD? Saw this discussion https://gist.github.com/haugstrup/3200331 from a few years ago but looks like it was not using I2C.

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rwaldron commented Feb 21, 2014

@devth not yet, but patches welcome! The addition should follow the design pattern used here: https://github.com/rwaldron/johnny-five/blob/master/lib/sonar.js, specifically the Device object pattern. Take a look at how the exact same class is used, with the same API for both analog and I2C devices:

devth commented Feb 21, 2014

Thanks, I'll dig in and see if I can figure something out!

Owner

rwaldron commented Feb 21, 2014

Exciting!

Becareful, this will be a lot of work and will suck you in! Just ask @dtex, he spent nearly 2 months redesigning the Motor class—it's a work of art, with emphasis on work :D

devth commented Feb 21, 2014

Sounds like fun :)

Owner

rwaldron commented Jun 1, 2014

For any future readers, this.firmata has been moved to this.io

On https://github.com/jgautier/firmata#i2c it's indicated that sendI2CWriteRequest and sendI2CReadRequest functions are both deprecated. Is it also the case for johnny-five ?

Owner

rwaldron commented Mar 11, 2015

Yes, all classes will be migrating to the new API in time

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