Linking error with TWI in SAADC example code

[vidit]

Hi Nordic team,

I am trying to enable I2C driver in SAADC example which is located in examples\peripheral\saadc\pca10040\blank\arm5_no_packs

As you can see I am using Keil V5

This example is working perfectly. The issue is when I am trying to use TWI in this.

nrf_drv_twi.c, nrfx_twi.c and nrfx_twim.c are added to project.

sdk_config.h didn't have the option to enable TWI, so I added following to sdk_config.h

// <e> NRFX_TWIM_ENABLED - nrfx_twim - TWIM peripheral driver
//==========================================================
#ifndef NRFX_TWIM_ENABLED
#define NRFX_TWIM_ENABLED 1
#endif
// <q> NRFX_TWIM0_ENABLED  - Enable TWIM0 instance
 

#ifndef NRFX_TWIM0_ENABLED
#define NRFX_TWIM0_ENABLED 1
#endif

// <q> NRFX_TWIM1_ENABLED  - Enable TWIM1 instance
 

#ifndef NRFX_TWIM1_ENABLED
#define NRFX_TWIM1_ENABLED 0
#endif

// <o> NRFX_TWIM_DEFAULT_CONFIG_FREQUENCY  - Frequency
 
// <26738688=> 100k 
// <67108864=> 250k 
// <104857600=> 400k 

#ifndef NRFX_TWIM_DEFAULT_CONFIG_FREQUENCY
#define NRFX_TWIM_DEFAULT_CONFIG_FREQUENCY 26738688
#endif

// <q> NRFX_TWIM_DEFAULT_CONFIG_HOLD_BUS_UNINIT  - Enables bus holding after uninit
 

#ifndef NRFX_TWIM_DEFAULT_CONFIG_HOLD_BUS_UNINIT
#define NRFX_TWIM_DEFAULT_CONFIG_HOLD_BUS_UNINIT 0
#endif

// <o> NRFX_TWIM_DEFAULT_CONFIG_IRQ_PRIORITY  - Interrupt priority
 
// <0=> 0 (highest) 
// <1=> 1 
// <2=> 2 
// <3=> 3 
// <4=> 4 
// <5=> 5 
// <6=> 6 
// <7=> 7 

#ifndef NRFX_TWIM_DEFAULT_CONFIG_IRQ_PRIORITY
#define NRFX_TWIM_DEFAULT_CONFIG_IRQ_PRIORITY 6
#endif
// </e>

Following is being included in the code

#include "nrf_drv_twi.h"
#include "nrf_twi.h"
#include "nrf_twim.h"

I have read through a lot of topics, everywhere above two solutions are suggested but I am still getting the following errors

linking...
.\_build\nrf52832_xxaa.axf: Error: L6218E: Undefined symbol nrfx_twi_init (referred from nrf_drv_twi.o).
.\_build\nrf52832_xxaa.axf: Error: L6218E: Undefined symbol idle_state_handle (referred from i2c_control.o).
.\_build\nrf52832_xxaa.axf: Error: L6218E: Undefined symbol nrfx_twi_disable (referred from i2c_control.o).
.\_build\nrf52832_xxaa.axf: Error: L6218E: Undefined symbol nrfx_twi_enable (referred from i2c_control.o).
.\_build\nrf52832_xxaa.axf: Error: L6218E: Undefined symbol nrfx_twi_rx (referred from i2c_control.o).
.\_build\nrf52832_xxaa.axf: Error: L6218E: Undefined symbol nrfx_twi_tx (referred from i2c_control.o).
.\_build\nrf52832_xxaa.axf: Error: L6218E: Undefined symbol nrfx_twi_uninit (referred from i2c_control.o).
Not enough information to list image symbols.
Not enough information to list load addresses in the image map.
Finished: 2 information, 0 warning and 7 error messages.
".\_build\nrf52832_xxaa.axf" - 7 Error(s), 3 Warning(s).
Target not created.
Build Time Elapsed:  00:00:51

Can someone please let me know where I am going wrong?

[Amanda Hsieh]

Hi, 

According to the error messages, you miss the nrfx_twi - TWI peripheral driver. Please add the following setting in the sdk_config.h 

// <e> NRFX_TWI_ENABLED - nrfx_twi - TWI peripheral driver
//==========================================================
#ifndef NRFX_TWI_ENABLED
#define NRFX_TWI_ENABLED 1
#endif
// <q> NRFX_TWI0_ENABLED - Enable TWI0 instance

#ifndef NRFX_TWI0_ENABLED
#define NRFX_TWI0_ENABLED 1
#endif

// <q> NRFX_TWI1_ENABLED - Enable TWI1 instance

#ifndef NRFX_TWI1_ENABLED
#define NRFX_TWI1_ENABLED 0
#endif

// <o> NRFX_TWI_DEFAULT_CONFIG_FREQUENCY - Frequency

// <26738688=> 100k 
// <67108864=> 250k 
// <104857600=> 400k

#ifndef NRFX_TWI_DEFAULT_CONFIG_FREQUENCY
#define NRFX_TWI_DEFAULT_CONFIG_FREQUENCY 26738688
#endif

// <q> NRFX_TWI_DEFAULT_CONFIG_HOLD_BUS_UNINIT - Enables bus holding after uninit

#ifndef NRFX_TWI_DEFAULT_CONFIG_HOLD_BUS_UNINIT
#define NRFX_TWI_DEFAULT_CONFIG_HOLD_BUS_UNINIT 0
#endif

// <o> NRFX_TWI_DEFAULT_CONFIG_IRQ_PRIORITY - Interrupt priority

// <0=> 0 (highest) 
// <1=> 1 
// <2=> 2 
// <3=> 3 
// <4=> 4 
// <5=> 5 
// <6=> 6 
// <7=> 7

#ifndef NRFX_TWI_DEFAULT_CONFIG_IRQ_PRIORITY
#define NRFX_TWI_DEFAULT_CONFIG_IRQ_PRIORITY 6
#endif

// <e> NRFX_TWI_CONFIG_LOG_ENABLED - Enables logging in the module.
//==========================================================
#ifndef NRFX_TWI_CONFIG_LOG_ENABLED
#define NRFX_TWI_CONFIG_LOG_ENABLED 0
#endif
// <o> NRFX_TWI_CONFIG_LOG_LEVEL - Default Severity level

// <0=> Off 
// <1=> Error 
// <2=> Warning 
// <3=> Info 
// <4=> Debug

#ifndef NRFX_TWI_CONFIG_LOG_LEVEL
#define NRFX_TWI_CONFIG_LOG_LEVEL 3
#endif

// <o> NRFX_TWI_CONFIG_INFO_COLOR - ANSI escape code prefix.

// <0=> Default 
// <1=> Black 
// <2=> Red 
// <3=> Green 
// <4=> Yellow 
// <5=> Blue 
// <6=> Magenta 
// <7=> Cyan 
// <8=> White

#ifndef NRFX_TWI_CONFIG_INFO_COLOR
#define NRFX_TWI_CONFIG_INFO_COLOR 0
#endif

// <o> NRFX_TWI_CONFIG_DEBUG_COLOR - ANSI escape code prefix.

// <0=> Default 
// <1=> Black 
// <2=> Red 
// <3=> Green 
// <4=> Yellow 
// <5=> Blue 
// <6=> Magenta 
// <7=> Cyan 
// <8=> White

#ifndef NRFX_TWI_CONFIG_DEBUG_COLOR
#define NRFX_TWI_CONFIG_DEBUG_COLOR 0
#endif

// </e>

Because the i2c_control.c only uses TWI driver instead of TWIM driver, please disable it. 

// <e> NRFX_TWIM_ENABLED - nrfx_twim - TWIM peripheral driver
//==========================================================
#ifndef NRFX_TWIM_ENABLED
#define NRFX_TWIM_ENABLED 0
#endif
// <q> NRFX_TWIM0_ENABLED  - Enable TWIM0 instance
 

#ifndef NRFX_TWIM0_ENABLED
#define NRFX_TWIM0_ENABLED 0
#endif

-Amanda H.

[vidit]

Hi Amanda,

It's working now.
Thanks allot for the help.

Regards,
Vidit

[Amanda Hsieh]

Hi Vidit, 

Is it possible to change this case to the public to help people? Now it is wanting your approval. 

If you are happy with the solution, please press the "verified answer" (for public case) or close (for private case). Thank you!

-Amanda H.