Firefly-RK3399 MPU6050

Chip Platform Rockchip
1

Hi,

MPU6050 sensor to Firefly-RK3399 board on J21 connector
7 pin - VCC3V3_SYS (MPU6050-VDD),
8 pin - GND (MPU6050-GND),
25 pins - I2C4_SDA (MPU6050_SDA),
26 pins - I2C4_SCL (MPU6050_SCL),
29 pin - SPI1_RXD (MPU6050-INT) is connected.

Attach photos and files.

  1. Firefly-RK3399 + MPU6050.jpg
  2. SensorFind.apk
    SensorFind.apk (1.48 MB)

Firefly-RK3399 MPU6050.jpg
Firefly-RK3399 MPU6050.jpg2988×5312 4.11 MB

And I installed the application (SensorFind.apk) to find the Android sensor, but it did not recognize the sensor.
I want to rotate the HDMI output screen every time the MPU6050 sensor moves.

Waiting for your help.

2

You need to add MPU6050 kernel driver and Android HAL support to get it working.

3

It is already applied to rk3399-firefly-port.dtsi file, and Android HAL support is already applied.

rk3399-firefly-port.dtsi
…
…
&i2c4 {
gsl3680: gsl3680@41 {
status = “disabled”;
compatible = “gslX680”;
reg = <0x41>;
screen_max_x = <1536>;
screen_max_y = <2048>;
touch-gpio = <&gpio1 20 IRQ_TYPE_LEVEL_LOW>;
reset-gpio = <&gpio0 12 GPIO_ACTIVE_HIGH>;
};
mpu6050:mpu@68{
status = “okay”;
compatible = “invensense,mpu6050”;
reg = <0x68>;
mpu-int_config = <0x10>;
mpu-level_shifter = <0>;
mpu-orientation = <0 1 0 1 0 0 0 0 1>;
orientation-x= <1>;
orientation-y= <1>;
orientation-z= <1>;
irq-gpio = <&gpio1 7 IRQ_TYPE_LEVEL_LOW>; /gpio1 A7/
mpu-debug = <1>;
};
};

Where do I find out where Android HAL support is applied?

4

penguin Posted at 5/30/2019 09:58
You need to add MPU6050 kernel driver and Android HAL support to get it working.

Hi penguin,

Thank you for the reply.

It is already applied to rk3399-firefly-port.dtsi file, and Android HAL support is already applied.
Where do I find out where Android HAL support is applied?

5

Hi james,

Please check to make sure that the sensor is probed and initialized correctly by inspecting the kernel log first.

6

penguin Posted at 6/5/2019 09:06
Hi james,

Please check to make sure that the sensor is probed and initialized correctly by inspec …

Hi penguin,

kernel build error

Error: arch/arm64/boot/dts/rockchip/rk3399-firefly-port.dtsi:200.11-12 syntax error
FATAL ERROR: Unable to parse input tree

rk3399-firefly-port.dtsi
…
…
&i2c4 {
mpu6500_acc@68 {
status = “okay”;
compatible = “mpu6500_acc”;
reg = <0x68>;
type = <SENSOR_TYPE_ACCEL>; // There was an error in this part. //
irq-gpio = <&gpio1 7 IRQ_TYPE_EDGE_RISING>;
mpu-int_config = <0x10>;
mpu-level_shifter = <0>;
mpu-orientation = <0 1 0 1 0 0 0 0 1>;
orientation-x= <1>;
orientation-y= <0>;
orientation-z= <0>;
mpu-debug = <1>;
};
};

I need your help.
Thank you.