6 replies

How do I set the I2C (Mpu-6050) slave address in my application?

@Middleware & OS Hello Guys, how do I set the I2C (Mpu-6050) slave address in my application, am getting the error

Failed to acquire bus access and/or talk to slave: Input/output error

Failed to acquire bus access and/or talk to slave: Input/output error

but i have Checked the wiring and confirmed the slave device address.
here's my code below

     int addr = 0x48; // The I2C address of the slave device
     if (ioctl(file, I2C_SLAVE, addr) < 0) {
         perror("Failed to acquire bus access and/or talk to slave");
         return 1;
     }

     int addr = 0x48; // The I2C address of the slave device
     if (ioctl(file, I2C_SLAVE, addr) < 0) {
         perror("Failed to acquire bus access and/or talk to slave");
         return 1;
     }

Solution

Thanks everyone!, I didn't realize the address for the MPU-6050 was different. I changed the address to 0x68 and now my code looks like this:

int file;
if ((file = open("/dev/i2c-1", O_RDWR)) < 0) {
    perror("Failed to open the i2c bus");
    return 1;
}

int addr = 0x68; // The I2C address of the MPU-6050
if (ioctl(file, I2C_SLAVE, addr) < 0) {
    perror("Failed to acquire bus access and/or talk to slave");
    return 1;
}

int file;
if ((file = open("/dev/i2c-1", O_RDWR)) < 0) {
    perror("Failed to open the i2c bus");
    return 1;
}

int addr = 0x68; // The I2C address of the MPU-6050
if (ioctl(file, I2C_SLAVE, addr) < 0) {
    perror("Failed to acquire bus access and/or talk to slave");
    return 1;
}

I ran it with sudo and it worked! Thanks again for your help!

Jump to solution

DIIS

DevHeads IoT Integration Server•2y ago•

6 replies

Boss lady

How do I set the I2C (Mpu-6050) slave address in my application?

@Middleware & OS Hello Guys, how do I set the I2C (Mpu-6050) slave address in my application, am getting the error

Failed to acquire bus access and/or talk to slave: Input/output error

Failed to acquire bus access and/or talk to slave: Input/output error

but i have Checked the wiring and confirmed the slave device address.
here's my code below

     int addr = 0x48; // The I2C address of the slave device
     if (ioctl(file, I2C_SLAVE, addr) < 0) {
         perror("Failed to acquire bus access and/or talk to slave");
         return 1;
     }

     int addr = 0x48; // The I2C address of the slave device
     if (ioctl(file, I2C_SLAVE, addr) < 0) {
         perror("Failed to acquire bus access and/or talk to slave");
         return 1;
     }

Solution

Thanks everyone!, I didn't realize the address for the MPU-6050 was different. I changed the address to 0x68 and now my code looks like this:

int file;
if ((file = open("/dev/i2c-1", O_RDWR)) < 0) {
    perror("Failed to open the i2c bus");
    return 1;
}

int addr = 0x68; // The I2C address of the MPU-6050
if (ioctl(file, I2C_SLAVE, addr) < 0) {
    perror("Failed to acquire bus access and/or talk to slave");
    return 1;
}

int file;
if ((file = open("/dev/i2c-1", O_RDWR)) < 0) {
    perror("Failed to open the i2c bus");
    return 1;
}

int addr = 0x68; // The I2C address of the MPU-6050
if (ioctl(file, I2C_SLAVE, addr) < 0) {
    perror("Failed to acquire bus access and/or talk to slave");
    return 1;
}

I ran it with sudo and it worked! Thanks again for your help!

Jump to solution

How do I set the I2C (Mpu-6050) slave address in my application?

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