nRF52832 and LIS3DH accelerometer

RE: nRF52832 and LIS3DH accelerometer

ovrebekk — Thu, 26 Nov 2020 08:13:43 GMT

Hi Gabriel

Happy to help, and the best of luck. If you are unable to get it working please let us know 🙂

Best regards
Torbjørn

RE: nRF52832 and LIS3DH accelerometer

Gabriel Jiro — Wed, 25 Nov 2020 14:15:43 GMT

ok, I will look at this libraries.
I thought that there was something in the Nordic SDK.

Thanks Nguyen and Torbjørn! 🙂

RE: nRF52832 and LIS3DH accelerometer

ovrebekk — Wed, 25 Nov 2020 11:38:16 GMT

Hi Gabriel

Feel free to give the IOsonata library that Nguyen recommended a go. I believe he is one of the developers, so I am sure he can help you get it running.

There are others libraries out there also, such as this one from Adafruit, and you can use a library like this for reference to develop something running on the nRF52832.

Best regards
Torbjørn

RE: nRF52832 and LIS3DH accelerometer

Nguyen Hoan Hoang — Tue, 24 Nov 2020 21:15:47 GMT

Try the IOsonata library. It is well designed and test with hundreds of devices & sensors. Current does not have driver for the LIS3DH but has many other accel that you can use as reference to read the LIS3DH registers. There are no sdk_config define junk with this library. You just tell it which pins and data rate at runtime. Then issue a read/write. The driver handle everything automatically for you.

See example code https://github.com/IOsonata/IOsonata/blob/master/exemples/sensor/mot_sensor_demo.cpp

RE: nRF52832 and LIS3DH accelerometer

Gabriel Jiro — Tue, 24 Nov 2020 18:03:21 GMT

Hi Torbjørn
Thanks for your reply.

I searched a lot in the forum about my problem, but I am still stuck.

Can you give me any starting point to develop an application (with nRF52832) that reads the accelerometer LIS3DH? 😫

RE: nRF52832 and LIS3DH accelerometer

ovrebekk — Tue, 24 Nov 2020 09:47:47 GMT

Hi Gabriel

Good luck. Please let us know if you get it to work or not 🙂

Best regards
Torbjørn

RE: nRF52832 and LIS3DH accelerometer

Gabriel Jiro — Mon, 23 Nov 2020 11:03:09 GMT

Thanks for your answer, hmolesworth

I will look for more information about the Slave address.

RE: nRF52832 and LIS3DH accelerometer

hmolesworth — Fri, 20 Nov 2020 17:28:27 GMT

"The Slave ADdress (SAD) associated to the LIS3DH is 001100xb. The SDO/SA0 pad can be used to modify the less significant bit of the device address. If the SA0 pad is connected to the voltage supply, LSb is ‘1’ (address 0011001b) else if SA0 pad is connected to ground, the LSb value is ‘0’ (address 0011000b). This solution permits to connect and address two different accelerometers to the same I2C lines"

This means that the slave address used in the example is incorrect for the LIS3DH, so it will not respond:

#define LSM6_ADD      (0XD6U >> 1)

Search this forum for LIS3DH and LIS2DH where there are multiple discussions on the usage of this part; there are also Adafruit examples on the web to go through.