RE: Add MPU6050 to FATFS example

Einar Thorsrud — Thu, 30 Aug 2018 08:41:30 GMT

Hi,

It would have been easier to answer the question if you had posted the full error message. Then we would have seen which symbol was not found by the linker. I attempted to build your project, and got the following error:

.\_build\nrf51422_xxac.axf: Error: L6218E: Undefined symbol twi_master_transfer (referred from mpu6050.o).

This tells us that you have not compiled the twi_master_transfer function, so you need to add the relevant file to your Keil project. This is twi_hw_master.c from \components\drivers_nrf\twi_master\deprecated\. Building again you now get this error:

..\..\..\..\..\..\components\drivers_nrf\twi_master\deprecated\twi_hw_master.c(42): error:  #5: cannot open source input file "twi_master_config.h": No such file or directory
  #include "twi_master_config.h"
..\..\..\..\..\..\components\drivers_nrf\twi_master\deprecated\twi_hw_master.c: 0 warnings, 1 error

Add
..\..\..\..\..\..\components\drivers_nrf\twi_master\deprecated\config to the include path to fix this last issue.

RE: Add MPU6050 to FATFS example

emircankavas — Wed, 29 Aug 2018 17:57:06 GMT

with my "mpu6050.h" file there is "mpu6050.c" file too. Did you download my SDK folder? Thanks for your answer.

RE: Add MPU6050 to FATFS example

awneil — Tue, 28 Aug 2018 19:35:10 GMT

A header is not a library: you also need to add the code of the library - ie, its implementation.