Converting twi sensor example from PCA100056 to PCA10056e results in error "'TWIM1_EASYDMA_MAXCNT_SIZE' undeclared (first use in this function)"

[tomsloan]

Hello,

I am trying to convert the twi_scanner into a PCA10056e project following the conversion doc from nordic. This was the downloaded example for the TWI scanner and worked before I began the conversions on the NRF52840dk. The problem I run into is after the conversions are done I get the error:

'TWIM1_EASYDMA_MAXCNT_SIZE' undeclared (first use in this function); did you mean 'TWIM0_EASYDMA_MAXCNT_SIZE'?

Here are photos of the steps I did:

1. Change target to NRF52811_xxAA

2. Change the None files from _startup_nrf52 & system_nrf52 to nrf52811 versions

3. Change the preprocessor macros

4. Change the linker macros

5. I noticed that the other PCA10056e examples had changed the ARM FB ABI TYPE to soft and the ARM FPU TYPE to VFP (this one is actually soft in the other examples but changes to VFP after I click on the value. Soft doesn't seem to be an option). 

6. I also changed the Heap and stack values even though I read here that they are set by default.

I checked and sdk_config has NRFX_TWIM1_ENABLED set to 0. In the nrfx_twim.c there is a check to see if is one and it evaluates as true even though it is not set.

[ovrebekk]

Hi 

There is no TWIM1 interface in the nRF52811. There is only one instance of the TWIM/TWIS peripheral, with index 0. 

For more details refer to the TWIM instance table in the production specification. 

Best regards
Torbjørn

[tomsloan]

Hi

Thanks for the response. I was able to solve the problem using what you said I was able to fix the problem by disabling TWI1 and TW1_easyDMA and using this thread here. 

Thank you

[ovrebekk]

Hi

I am happy to hear you found a solution. The best of luck with your project

Best regards
Torbjørn