12/9/2023 0 Comments Nmap pi![]() So we will write 7 in SMPLRT_DIV: i2cset -y 1 0圆8 0x19 0x07 # For 1 kHz - 8kHz /(1 + 7) According to the datasheet this is 8kHz / (1+SMPLRT_DIV). Now we can configure the sample rate divider (SMPRT_DIV). The filtering is also forced to 0: i2cset -y 1 0圆8 0x1A 0x00 There is no external signal that can be used for synchronization. Sample rate configuration with SMPRT_DIV & CONFIG registersĭata are copied from internal private register to public registers at a certain frequency. Let 1.08g ( on at 16384 LSB per g), not so bad considering I did not calibrate the sensor. In the datasheet, it is indicated that the data are on 16 bits in two’s complement, the result in decimal is 17768. The display of i2cget inverts the high and low bits, the real result is 0x4568. By holding the component horizontally, component facing upwards to measure gravity acceleration, I make a measurement by reading the 2 bits (with i2cget’s w option) in a single reading : i2cget -y 1 0圆8 0x3F w The data can be read on 2 registers 0x3F (high order bits) and 0x40 (low order bits). Now we will read the Z-axis of the accelerometer, it is perpendicular to the component, it is the easiest to handle. Here we want to provide the measuring range of the accelerometer, here are the possible options:įor this demonstration we will use the smallest range of 2g so we write 0 into the register: i2cset -y 1 0圆8 0x1C 0x00 Reading the Z-axis of the accelerometer Thus we write 0x01 in this register: i2cset -y 1 0圆8 0圆B 0x01Ĭopyright: Invensense (MPU6050 register map) Accelerometer configuration register ACCEL_CONFIG It is not recommended to use the internal oscillator, so we will use the gyroscope’s X axis PLL. It ensures that the chip is not in sleep mode and that the temperature measurement is activated. In order to read the accelerometer registers, the power supply of the MPU-60X0 (register PWR_MGMT_1, 0圆B ) must first be configured. i2cget -y 1 0圆8 0x75Ġ圆8 # Yes we know that but thanks ! Reading Acceleration Data on MPU6050 Power supply register PWR_MGMT_1 MPU6050’s default address is 0圆8, you can test it responds correctly by asking for its address. If not, check our article on the i2c bus of the Raspberry-Pi. Make sure that /dev/i2c-1 exists on your Raspberrry-Pi.
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