nRF51822 I2C

RE: nRF51822 I2C

@nj@ly — Wed, 29 Jul 2015 12:23:40 GMT

I too want a sample code using TWI. Where can I find that. I am using SDK v8.1

RE: nRF51822 I2C

Mauricio Contreras — Wed, 22 Apr 2015 23:49:21 GMT

I'm reading the release notes for nRF51 SDK v8.0.0 and it says: " - Deprecated the following examples (for support, use SDK v6.x.x): * ADNS2080 Mouse Sensor Driver Application * Cherry8x16 Keyboard Application * Button Debouncer Example * nRF6350 Radio Configuration Example * PWM Analyzer Example * Motor Control Example * TWI Master Example "

I wonder if they replaced it with anything else?

RE: nRF51822 I2C

Mario — Wed, 04 Feb 2015 16:35:13 GMT

Hello,

I am trying to find the I2C example and I can't. It doesn't appear here:

developer.nordicsemi.com/.../a00038.html

And it doesn't either in my PC folder. It is possible that it was available in past SDK versions but it's not anymore?

Thank you.

RE: nRF51822 I2C

Ole Morten — Thu, 01 Aug 2013 09:45:49 GMT

To clean things up, I'd be happy if you could evaluate the answer you have received and accept it if you feel it's sufficient. If not, it might be useful to expand your question a little and provide further information.

RE: nRF51822 I2C

Ole Morten — Thu, 27 Jun 2013 11:32:04 GMT

It was originally written for a very early chip revision in which the hardware was buggy, but now there isn't really any reason to use it anymore. It's still included mostly since it has been written anyway.

RE: nRF51822 I2C

Marc Nicholas — Thu, 27 Jun 2013 10:39:38 GMT

What would be instances where the software implementation is preferable, Ole? Would it generally be when you wanted to deal with slight variances in the protocol?

-m

RE: nRF51822 I2C

Ole Morten — Thu, 27 Jun 2013 05:14:51 GMT

In addition to the twi_sw_master_example there is also a twi_hw_master_example, that uses the hardware TWI module instead of a bit-banged implementation.

Sam is however correct that the nRF51822 can only be an TWI master, not slave.

RE: nRF51822 I2C

Sam Wei Quan — Wed, 26 Jun 2013 22:38:13 GMT

nRF51822 I2C example is twi_sw_master_example. I2C also know as two wire interface(TWI). You can check nRF51 SDK documentation for nRF51822 TWI limitation like it only able to use in Master mode.