mpu6050 on Nrf51822

[nick]

Hello

Is there any example or tutorial on how to use the mpu6050 library? I just started to program the nrf51822 and hope to find some helpful clues to get me going.

Any suggestion would be appreciated.

Nick

Update: I got the mpu-6050 working on keil, but without the mentioned examples. I did found some example on a chinese website. With some help of google translate i got to tweak it a little. For someone who is just a beginner most examples look difficult so i am already happy i got it working. And i can work forward from that base. For everyone who likes to use this very simple example. Here is my project; NRF51-MPU6050.rar

[MartinBL]

Hi,

UPDATE 2016.03.30:

I have uploaded some examples showing how you can use the MPU9150 and MPU9255 with the nRF51 here. The examples shows various features of the MPUs like free fall interrupts, data ready interrupts, and how to transmit MPU data over BLE.

Further on, the MPU9150 and the MPU6050 are very similar and I'm quite sure that the example should work equally well, un-altered, on both sensors. However I have not tested it with the MPU6050. Feel free to try it out and give me some feedback if something is not working correctly.

Note: The example is made for nRF51 3rd revision ICs and SDK 11.0.0 (Refer to the Compatibility Matrix. If you use older ICs it will not work. If you use a different SDK it might work, but I haven't tested it. If you use a different SDK and run into troubles please do your best to fix it yourself before you post any questions here.

Finally, there are no good tutorials from Nordic for the MPUxxxx I'm afraid, but there are a bunch of more or less useful posts here on devzone.

[dkwill]

Thanks! Just wanted to let you know this was a huge help. I just changed the board defines as you indicated (using 9150) and the SCL and SDA pins to 7 and 30 respectively and it works great. I also tried to run on a mpu6050 (changed the board defines to MPU60x0 but no luck on that one but haven't looked into it yet.

[MartinBL]

Hi. I'm glad to hear it! The MPU6050 issue might be due to an incorrect register map. At first I thought all of the maps were identical, but as it turned out I was wrong. What I did was to simply copy paste the maps and made a plan to update them later. And then I just haven't had the time. I guess I should consider removing the files and the MPU6050 support until I have updated the map. I would really appreciate it if you would let me know if you find the cause.

[MartinBL]

I had a quick look at and updated the MPU60x0 register map now. It seemed to be alright, but the config structures in mpu.h were not defined properly for MPU60x0. I tried to fix it, but I have no MPU60x0 to test with so I don't know if it works yet.

[dkwill]

I just wanted to respond back that I tried to set up w/ mpu6050 with the new changes with no luck - getting zeros for output in UART. Haven't had a chance to look at it but results for 9150 and 6050 are the same on my scope. Just wanted to let you know. If I find something, I'll respond back.

[dkwill]

So I tried a different MPU6050 and everything works! I just changed the board defines to MPU60x0. Thanks again for your work!