RE: TWI with S110 softdevice Enabled

MartinBL — Wed, 04 Mar 2015 11:15:10 GMT

The sd_twi_hw_master.c and hal_twi.c should both work with the SoftDevice.

To elaborate a bit:

In the early revisions of the nRF51822 the TWI circuitry didn't function properly and a software workaround was made called twi_sw_master.c. In the later revisions the hardware TWI works as intended, but if you are using a softdevice and the twi_hw_master.c the SD and TWI will get assigned the same PPI channel and the TWI will fail. Therefore you will have to use the sd_twi_hw_master.c to get the TWI working properly with the SD. Finally, the hal_twi.c was originally written to be used with the nRFready Smart Remote 2 and is not tested with anything else than the smart remote.

Martin

RE: TWI with S110 softdevice Enabled

asma — Thu, 26 Feb 2015 04:04:20 GMT

Hi charles Can you provide me your working example code.

RE: TWI with S110 softdevice Enabled

Charles Manning — Thu, 26 Feb 2015 00:06:32 GMT

Both the S110 and S120 stacks both work with TWI.

We have no problems reading/writing using twi_master_transfer().