Initialization and operation of sensor mpu6050 with nrf52840 development board

[MRK-196]

I want to be able to read the gyro and accelerometer values from the MPU6050 sensor.

As a base start I downloaded the  NRF5 SDK V15.3.0 and modified twi_sensor_pca10056 program using editor software Kielu5 to initialize the MPU6050. My current problem is that I am not getting the correct reading values from the sensor. The problem I think is coming from the MPU6050 initialization. Because the TWI supposed to work fine since its a working project and I also tested the UART by sending some initial test strings before operating.

I modified the project by including the following MPU related libraries in the main project:

• sensor_mpu6050.h
• sensor_mpu6050.c

I am connecting the SCL and SDL to the following respective board pins:

       SCL    = MPU6050_SCL_PIN,      // PIN 0.27
       SDA    = MPU6050_SDA_PIN,     // PIN 0.26

In the main.c , I am initializing the MPU and trying to read the MPU values and displaying them on a serial  terminal window using UART.

I am attaching the current working project main program and the added mpu libraries, the complete project is inside NRF5 v15.3.0 , I left it there since there are certain libraries that are spread across the SDK.

LINK TO PROJECT DOWNLOAD

PATH LINK TO CURRENT WORKING PROJECT :     nRF5_SDK_15.3.0_59ac345\examples\peripheral\twi_sensor\pca10056\blank\arm5_no_packs

I would appreciate someone's help since I'm new to this type of technology, don't hesitate to ask for more information.

[Simonr]

Hi

I found this GitHub repository, which uses its own MPU library compatible with SDK14.2 of nRF5 series devices. Please take a look at that to see if you can find what's incorrect about your sensor settings.

Best regards,

Simon

[MRK-196]

Thanks for the reference, I'll check it out