implicit declaration of function

[serzh]

i have project app_ble_uart and i want add to it functin read from mpu6050 i add to Makefile Makefile pathes and add #include "mpu6050.h" and InitMPU6050(0x68); into main main.c but i have error

./../../main.c: In function 'main':
../../../main.c:653:5: error: implicit declaration of function 'InitMPU6050' [-Werror=implicit-function-declaration]
     InitMPU6050(0x68);
     ^~~~~~~~~~~
cc1.exe: all warnings being treated as errors
make: *** [_build/nrf52832_xxaa_main.c.o] Error 1
../../../../../../components/toolchain/gcc/Makefile.common:134: recipe for target '_build/nrf52832_xxaa_main.c.o' failed

What i do wrong?

[Jørgen Holmefjord]

Hi,

Are you trying to include the MPU6050 driver that is present in the SDK? This driver does not have any functions with the name InitMPU6050. Try with mpu6050_init(0x68) instead.

If you are trying to add another MPU6050 library, you need to include the path to the correct header files in your Makefile.

Best regards,

Jørgen

[serzh]

ok it is my error

[serzh]

but i fix it and add new patchs into Makefile

  $(SDK_ROOT)/components/drivers_ext/mpu6050/mpu6050.c \
  $(SDK_ROOT)/components/drivers_nrf/twi_master/deprecated/twi_hw_master.c \
  $(SDK_ROOT)/components/drivers_nrf/twi_master/deprecated/twi_sw_master.c \
  $(SDK_ROOT)/components/libraries/uart/app_uart_fifo.c \

and

  $(SDK_ROOT)/components/drivers_nrf/twi_master/deprecated/config \
  $(SDK_ROOT)/components/drivers_nrf/twi_master/deprecated \

and i have error

../../../../../../components/drivers_nrf/twi_master/deprecated/twi_hw_master.c: In function 'twi_master_write':
../../../../../../components/drivers_nrf/twi_master/deprecated/twi_hw_master.c:81:21: error: 'NRF_TWI_Type {aka struct <anonymous>}' has no member named 'POWER'
             NRF_TWI1->POWER        = 0;
                     ^~
../../../../../../components/drivers_nrf/twi_master/deprecated/twi_hw_master.c:83:21: error: 'NRF_TWI_Type {aka struct <anonymous>}' has no member named 'POWER'
             NRF_TWI1->POWER        = 1;
                     ^~
../../../../../../components/drivers_nrf/twi_master/deprecated/twi_hw_master.c: In function 'twi_master_read':
../../../../../../components/drivers_nrf/twi_master/deprecated/twi_hw_master.c:154:21: error: 'NRF_TWI_Type {aka struct <anonymous>}' has no member named 'POWER'
             NRF_TWI1->POWER        = 0;
                     ^~
../../../../../../components/drivers_nrf/twi_master/deprecated/twi_hw_master.c:156:21: error: 'NRF_TWI_Type {aka struct <anonymous>}' has no member named 'POWER'
             NRF_TWI1->POWER        = 1;
                     ^~
../../../../../../components/toolchain/gcc/Makefile.common:134: recipe for target '_build/nrf52832_xxaa_twi_hw_master.c.o' failed
make: *** [_build/nrf52832_xxaa_twi_hw_master.c.o] Error 1

what i neуd to do?

[Jørgen Holmefjord]

Sorry, I did not know that the MPU6050 driver did use a deprecated TWI driver. I do not recommend using this. Please have a look at this thread. You should be able to rewrite the driver to work with the standard TWI master driver, without too many changes. I would also recommend you to take a look at this GitHub repository by Martin, which contains drivers and examples for various MPU models.

[serzh]

ok thank you