interfacing nrf52840 with gy-521 and gy-89 sensor

RE: interfacing nrf52840 with gy-521 and gy-89 sensor

Haaris — Tue, 28 Aug 2018 09:39:30 GMT

// Declare a gryro structure variable first

gyro_values_t gyro_values;

// Call this in your main funtion.

err_code = app_mpu_read_gyro(&gyro_values);

Use the above as refernce

RE: interfacing nrf52840 with gy-521 and gy-89 sensor

mohanraj360 — Mon, 27 Aug 2018 07:01:30 GMT

i got accelrometer values and how to get gyroscope values

RE: interfacing nrf52840 with gy-521 and gy-89 sensor

mohanraj360 — Mon, 27 Aug 2018 05:18:40 GMT

"Use the following definitions in the file nrf_drv_mpu_twi/nrf_drv_mpu_spi" you mentioned like this but where this folder found in that sdk

RE: interfacing nrf52840 with gy-521 and gy-89 sensor

Simon — Fri, 24 Aug 2018 12:56:13 GMT

The breakout board gy-521, includes the MPU-6050 device (accelerometer and gyro), thus you can use this link to get it working.

Follow these steps (assuming you have keil installed):

Connect the MPU-6050 to the board in the following manner:
- Pin 27 on nrf52840 → SCL on the gy-521 board
- Pin 26 on nrf52840 → SDA on the gy-521 board
- VDD on nrf52840 → VCC on the gy-521 board
- GND on nrf52840 → GND on the gy-521 board
Enter this this link
Follow the steps in the link, under “How to use”
- You can start with the mpu-simple example for simplicity
- In your case, define MPU6050
- Use the following definitions in the file nrf_drv_mpu_twi/nrf_drv_mpu_spi
- ```
#define MPU_TWI_SCL_PIN 27
#define MPU_TWI_SDA_PIN 26
```
Enable logging in order to see the sensor data

I followed these steps using MPU9250, and it worked fine. However, the examples are not tested on MPU6050, but please ask if it doesn't work. This could be a start, and if you get it to work I can help you with the gy-89.

Best regards Simon

RE: interfacing nrf52840 with gy-521 and gy-89 sensor

Haaris — Fri, 24 Aug 2018 11:09:00 GMT

Refer the TWI Master example in the sdk for reference(SCK and SDA pins are used in TWI protocol). All the libraries are already there you just have to understand and use it.

I also found a site which may help you

https://github.com/gabriel-ns/nRF5-sensor-libraries

Now that library is made for nf51 but you're using an nrf52840 so just use this as a reference, it has BMP180 interfacing example

RE: interfacing nrf52840 with gy-521 and gy-89 sensor

mohanraj360 — Fri, 24 Aug 2018 10:43:38 GMT

CAN YOU PLEASE HELP ME HOW TO READ SENSOR VALUE THAT HAVE SCK,SDA PINS AND MONITOR IN ANY SERIAL MONITOR.

YOU CAN TELL FOR ANY SENSOR,THEN I WILL MODIFY FOR MY CODE

RE: interfacing nrf52840 with gy-521 and gy-89 sensor

mohanraj360 — Fri, 24 Aug 2018 10:42:09 GMT

BMP180

RE: interfacing nrf52840 with gy-521 and gy-89 sensor

Haaris — Fri, 24 Aug 2018 09:42:43 GMT

Let me get this straight, by gy-521 you mean mpu6050 right?