Including drivers in my project

[JasonPierpont]

Development Kit: NRF52840

IDE: Segger Embedded Studios

I'm trying to use the nrf_drv_twi driver in my project. I've included the .c file in my nFR_Drivers folder. My base project is the uart_pca10056 example and I'm referencing the twi_sensor example for using TWI. When I build the project I get the error on my call to NRF_DRV_TWI_INSTANCE:

"NRF_DRV_TWI_INSTANCE_0 undeclared here (not in a function) did you mean 'NRF_DRV_TWI_INSTANCE_'?"I

I've read some discussions that I need to enable something in the sdk_config.h file but when I go to do that, I notice the file does not contain the nrf_drv_twi defines to do so.

I've tried copying the defines from the twi_sensor example into my sdk_config.h and that still does not solve the problem.

[JasonPierpont]

Hi Karl, 

Here are the contents of my User Include Directories from the Project Options.

../../../config

../../../../../../components

../../../../../../components/boards

../../../../../../components/drivers_nrf/nrf_soc_nosd

../../../../../../components/libraries/atomic

../../../../../../components/libraries/balloc

../../../../../../components/libraries/bsp

../../../../../../components/libraries/delay

../../../../../../components/libraries/experimental_section_vars

../../../../../../components/libraries/fifo

../../../../../../components/libraries/log

../../../../../../components/libraries/log/src

../../../../../../components/libraries/memobj

../../../../../../components/libraries/ringbuf

../../../../../../components/libraries/strerror

../../../../../../components/libraries/uart

../../../../../../components/libraries/util

../../../../../../components/toolchain/cmsis/include

../../..

../../../../../../external/fprintf

../../../../../../integration/nrfx

../../../../../../integration/nrfx/legacy

../../../../../../modules/nrfx

../../../../../../modules/nrfx/drivers/include

../../../../../../modules/nrfx/hal

../../../../../../modules/nrfx/mdk

../config

I tried adding these variations of the file path and still had the same error.

../../../../../../ntegration/nrfx/legacy

../../../../../../ntegration/nrfx/legacy/nrf_drv_twi

../../../../../../ntegration/nrfx/legacy/nrf_drv_twi_h

I am not intentionally using TWI instead of TWIM. I am trying to communicate with a sensor via I2C and I read that TWI was the Nordic equivalent. Is TWIM better/easier to use than TWI?

I am using the TWI0 instance. I am trying to define it like this:

#define TWI_INSTANCE_ID 0

static const nrf_drv_twi_t m_twi = NRF_DRV_TWI_INSTANCE(TWI_INSTANCE_ID); 

Thanks, 

Jason