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Boss lady

•Created by Boss lady on 6/27/2024 in #middleware-and-os

How can I initialize the I2C bus on the BeagleBone Black Rev C running Embedded Linux?

Hey guys, how can I initialize the I2C bus on the BeagleBone Black Rev C running Embedded Linux? I am getting the error Failed to open the bus: No such file or directory, but I have verified that the I2C module is loaded and checked the device tree overlay. Here are the steps I took to verify the I2C module: 1. Loaded the I2C module using modprobe i2c-dev. 2. Checked that the device tree overlay for I2C is applied correctly. The error occurs when attempting to open the I2C bus

#include <linux/i2c-dev.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>

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

#include <linux/i2c-dev.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>

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

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