Where should the SPI master enable definition be set? (nRF51 SDK v9)

[puz_md]

The nRF51 SDK (version 9) documentation tells to activate SPI using the SPI_MASTER_0_ENABLE and SPI_MASTER_1_ENABLE macros. Where should these definitions be made? Other components seem to use nrf_drv_config.h for their configuration but spi_master does not include this file. Why is SPI treated differently?

Update: In the meantime, SDK version 10 was released. There, the issue has been resolved and the new SPI driver offers a very easy way of configuration and usage. Further, both synchronous (blocking) and asynchronous (callback event) SPI operations are supported an SS handling of the driver can be disabled.

[Stefan Birnir Sverrisson]

Hi

As gortok points out you enable the SPI by inserting the processor symbols in Keil

SPI_MASTER_0_ENABLE    
SPI_MASTER_1_ENABLE  

This is set in e.g. spi_master example in nRF51 SDK 9.0.0 as shown in the following screenshot

[puz_md]

Hi Stefan, thanks for the feedback. In fact, I now that I can set preprocessor symbols (I'm using GCC with makefile, though). I was just wondering why the SPI driver is treated differently (or if there is a differnet place where all drivers should be configured). For a straightforward software design, it would be nice to have all hardware configuration in the same place. Sorry for not making this clear in my initial question.

[Stefan Birnir Sverrisson]

ok, I see your point. All drivers that have nrf_drv_* prefix have been included in the nrf_drv_config.h setup. I suspect the SPI will eventually be put into the same platform. Meanwhile, it is still spi_master, but until it becomes nrf_drv_spi_master, I guess it will be enabled with a preprocessor symbol.