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I2C MPU6050 example does not provide correct intiliazation of the device #557

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sa2kaa opened this issue Sep 29, 2024 · 1 comment

sa2kaa commented Sep 29, 2024 •

edited by lurch

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Writing 80h to PWR_MGMT_1 register results in the MPU to restart in sleep mode. Instead 00h shall be written.

As shown below:

static void mpu6050_reset() {
    // Two byte reset. First byte register, second byte data
    // There are a load more options to set up the device in different ways that could be added here
//    uint8_t buf[] = {0x6B, 0x80};
    uint8_t buf[] = {0x6B, 0x00}; // Clear the SLEEP bit, do not(!) RESET the device.
      i2c_write_blocking(i2c_default, addr, buf, 2, false);
}

Contributor

lurch commented Oct 2, 2024

See also https://github.com/raspberrypi/pico-examples/issues?q=MPU6050

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