Best TWI I2C driver for the nRF52832

[Charlie Tuer]

Hi there,

I am trying to get I2C communication up and running with the nRF52832 (specifically configuring the nRF52832 as a master to communicate with 3 slave devices), and have been having some trouble. So far I have been working with the example code twi_sensor (twi_sensor_pca10040.emProject) and have tried running it with the initialy included nrf_dvr_twi functions, as well as altering it to use TWI and TWIM. I have been getting a large variety of errors and haven't really been able to narrow in on the cause. Before I spend more time on this, I want to make sure I am using the appropriate driver. Both the TWI and TWIM look as if they will work for my application, but it seems like the TWI is more complicated due to its relation with the legacy drivers? I do not need backwards compatibility so can I use TWIM as a standalone? Also, so far I've been unable to find any I2C/TWI examples using TWIM, does anyone know where I might be able to find some? Any advice would be greatly appreciated.

Thanks,

Charlie

[Nguyen Hoan Hoang]

You can find a much better driver here

https://github.com/I-SYST/EHAL/tree/master/ARM/Nordic/src 

usage example master/slave here

https://github.com/I-SYST/EHAL/tree/master/exemples/i2c

[Charlie Tuer]

Hi Nguyen,

Thank you for your reply. This driver seems great; however unfortunately I will have to integrate my project with several others coded in C, while this driver seems to be more C++ oriented. I have managed to get something running with the TWI legacy driver for now but will be sure to come back to this for future projects.

Cheers,

Charlie

[Nguyen Hoan Hoang]

It actually works for both C & C++.  For C code use the I2Cxx function counterpart.  Same driver, different wrapper.  It can also be mixed C & C++ altogether.