GY-80 MODULE interfacing with nrf52840 module

[saver]

how to change the twi sensor coding to get the X,Y,Z AXIS for the position of the gy-80 module

this module has 

1.HMC5883L

2.BMP-085

3.L3G4200D

4.ADXL345

at least i need to get the HMC5883L-magnetometer readings 

please help me out 

the twi sensor is made of thingy sensor which i don't understand

the datasheet of gy-80 HMC5883L magnetometer is 

https://www.eprolabs.com/wp-content/uploads/2016/07/SEN-0025c.pdf

what and all i should modify in the twi sensor code can anyone say

[Kenneth]

First of all you should get yourself an logic analyzer (e.g. https://www.saleae.com/) such that you can observe the serial data and compare with the datasheet of the sensor.

Secondly I suggest to run these two examples as a starting point. The first example will identify the address of the sensor and ensure that the hardware is working. The second example can be used as a starting point to read and write to the sensor.

https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/twi_scanner_example.html

https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/twi_sensor_example.html

Best regards,
Kenneth