BLE accelerometer

[Karthiknk]

Greetings,

I'm using nRF52 DK to transfer LIS3DH accelerometer data in Bluetooth. I successfully managed to establish an I2C connection with my sensor, I get my XYZ values. Now I want to send the data in Bluetooth, I'm a bit confused about what to do next. Is there any example program in SDK that will help me? or if you can suggest to me some tutorial that would be helpful too. I'm a beginner, so any advice or suggestions are welcome. Thank you.

[Jørgen Holmefjord]

Hi,

It is possible to send the values as a string using Nordic UART Service (NUS). There is an example available in the SDK: UART/Serial Port Emulation over BLE

If you want to create your own custom service for sending accelerometer data, please have a look at the BLE tutorials. These should be most useful:

• Bluetooth low energy Services, a beginner's tutorial
• Bluetooth low energy Characteristics, a beginner's tutorial

Best regards,
Jørgen

[Karthiknk]

Hi,

I tried the BLE UART example to send my TWI sensor data. I'm having trouble with sdk_config. In my TWI program, im using the nrf_drv_twi legacy driver. I think it is creating some compatibility problems. So as per the article in devzone, I'm migrating from nrf_drv_twi to nrfx_twim driver. I have a doubt in it. What is this NRFX_TWIM_DESC_TX macro? I don't understand what is this descriptor means. I searched for other functions in nrfx_twim, but the functions are not advised to use. Please help me to understand this, I'm a t lost here. What are the functions or macros I need to migrate to this new nrfx_twim driver? For your information, I'm reading 3axis accelerometer LIS3DH using I2C communication. Please let me know my approach is correct.