"NRFX_SPI0_INST_IDX" is undefined (IAR)

Question

Hi, 
 Can't get rid of compilation error about undefined NRFX_SPI0_INST_IDX after adding nrfx_spi driver. Searched the forums and found similar issues but none of the suggested actions seems to work for me. The steps taken to add the driver: 
 
 nrfx_spi.c added to project 
 #define NRFX_SPI_ENABLED 1 and #define NRFX_SPI0_ENABLED 1 in sdk_config.h 
 Include file search paths updated as far as I can tell (no complaints about missing files) 
 
 Using a very similar configuration for TWI/TWI0 which I managed to get working. I had issues with this as well but managed to solve it by defining TWI_ENABLED 1 and TWI0_ENABLED 1 as well. The corresponding thing does not work with SPI though. 
 Using IAR compiler and SDK 15.0.0, nRF52832 
 
 BR 
 /Ola

OlaHallstrom · Accepted Answer

Here is an update after a lot of head scratching and finally getting forward. Summary of things I had to do to get it compiling: Removed everything I did using NRFX_SPI and instead tried NRFX_SPIM Different instances used; TWI 0 and SPIM 1 Legacy driver c file (nrf_drv_spi.c) added to project but it compiles also without. Don't know if it makes a difference at a later stage Relevant stuff from sdk_config.h looks like this: // NRFX_SPI_ENABLED - nrfx_spi - SPI peripheral driver //========================================================== #ifndef NRFX_SPI_ENABLED #define NRFX_SPI_ENABLED 0 #endif // NRFX_SPI0_ENABLED - Enable SPI0 instance #ifndef NRFX_SPI0_ENABLED #define NRFX_SPI0_ENABLED 0 #endif // NRFX_SPI1_ENABLED - Enable SPI1 instance #ifndef NRFX_SPI1_ENABLED #define NRFX_SPI1_ENABLED 0 #endif // NRFX_SPI2_ENABLED - Enable SPI2 instance #ifndef NRFX_SPI2_ENABLED #define NRFX_SPI2_ENABLED 0 #endif // NRFX_SPIM_ENABLED - nrfx_spim - SPIM peripheral driver //========================================================== #ifndef NRFX_SPIM_ENABLED #define NRFX_SPIM_ENABLED 1 #endif // NRFX_SPIM0_ENABLED - Enable SPIM0 instance #ifndef NRFX_SPIM0_ENABLED #define NRFX_SPIM0_ENABLED 0 #endif // NRFX_SPIM1_ENABLED - Enable SPIM1 instance #ifndef NRFX_SPIM1_ENABLED #define NRFX_SPIM1_ENABLED 1 #endif // NRFX_SPIM2_ENABLED - Enable SPIM2 instance #ifndef NRFX_SPIM2_ENABLED #define NRFX_SPIM2_ENABLED 0 #endif // SPI_ENABLED - nrf_drv_spi - SPI/SPIM peripheral driver - legacy layer //========================================================== #ifndef SPI_ENABLED #define SPI_ENABLED 1 #endif // SPI1_ENABLED - Enable SPI1 instance //========================================================== #ifndef SPI1_ENABLED #define SPI1_ENABLED 1 #endif The interesting part I think is that just by using SPIM rather than SPI, doing only what is necessary for that, it seems to work. I can't think of anything else than some issue in the SDK. Haven't investigated further. Let's see what happens when starting to actually use the interface. Lots of trouble just to get through compilation...

"NRFX_SPI0_INST_IDX" is undefined (IAR)

Top Replies