How to use MPU 6050 Driver?

RE: How to use MPU 6050 Driver?

Sri_guy — Fri, 28 Oct 2016 15:03:19 GMT

Hi @Martin Børs-Lind , the updated code now displays the data on the pc terminal. Thank you for fixing that. However, when I try connecting it to my phone, there is no UART detected. The phone is able to detect the service, but no data is being displayed now. Any ideas?

Thanks

RE: How to use MPU 6050 Driver?

MartinBL — Mon, 24 Oct 2016 09:30:40 GMT

Hi @Sri_guy. I have updated the example on github and your terminal issue should be fixed now. Of some reason the example used the wrong UART library. It should have used app_uart_fifo.c to be to enable the use of printf and print strings, but it didn't.

RE: How to use MPU 6050 Driver?

Sri_guy — Sun, 23 Oct 2016 01:32:09 GMT

Hi again, I tried changing the pin definitions like you suggested, but it did not seem to solve the issue. When I oppened a terminal on my computer I got this:

[1B]0 0000[1B]0000c0[1B]0 00,00[1B]00040[1B]0,000,0[1B]0 00, 0[1B]0 000 0[1B]0 0000[1B]060000[1B]0600,00[1B]040000 [1B]00x00[1B]0000 [1B]0400 00[1B]080000[1B]0,0000[1B]0 0000[1B]0,0000[1B]0,0000[1B]0,0000[1B]00000[1B]0,000,0[1B]0 000 0[1B]0,0000[1B]0000,0[1B]0,0000

It kept going on like that. I'm not sure what exactly it means.

Also, I noticed that the timer was commented out of the code for somereason.

Thanks

RE: How to use MPU 6050 Driver?

bjorn-spockeli — Tue, 11 Oct 2016 10:26:04 GMT

Have you remembered to edit #define MPU_TWI_SCL_PIN 1 and #define MPU_TWI_SDA_PIN 2to reflect this? The SDA and SDA pins are for the TWI(I2C) interface and not the UART interface. The data sent over the UART will be sent through the USB cable connected to your nRF52 to your computer. Just select the correct COM port in your terminal and you should see the data from the MPU6050.

RE: How to use MPU 6050 Driver?

Sri_guy — Sun, 02 Oct 2016 18:08:39 GMT

Hi again. I was tried using "nrf5-ble-mpu-simple" project. I successfully uploaded to the NRF52 and I was able to connect to it using my iphone. However, there is no data coming from the UART interface and the real time terminal did not seem to display anything. I connected the SCL line to P0.03 and the SDA line to P0.04 pins on the NRF52 with a buad rate of 115200. I did not connect INT to anything on the board.

Any advice?

RE: How to use MPU 6050 Driver?

Sri_guy — Sat, 01 Oct 2016 17:51:32 GMT

This really awesome and well written. Thanks. I was wondering though, does the code use an interrupt pin from the MPU6050? If so which pin would it be?

RE: How to use MPU 6050 Driver?

bjorn-spockeli — Fri, 30 Sep 2016 08:23:39 GMT

I suggest that you use the driver in this GitHub repo instead of the one in the SDK. The drivers were made by a colleauge, Martin Børs-Lind(@martinbl) and have a lot of features that the SDK driver does not have.

-Bjørn