47 lines
1.0 KiB
C
47 lines
1.0 KiB
C
/* Autor : Siva Prakasam //
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Date : 30/12/24 //
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Title : I2C scan */
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <linux/i2c-dev.h>
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#define I2C_BUS "/dev/i2c-1" // Modify according to your bus
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int main() {
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int file;
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int addr;
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char *bus = I2C_BUS;
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// Open the I2C bus
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if ((file = open(bus, O_RDWR)) < 0) {
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perror("Failed to open I2C bus");
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exit(1);
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}
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printf("Scanning I2C bus %s...\n", bus);
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// Loop through all possible I2C addresses (0x03 to 0x77)
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for (addr = 0x03; addr < 0x78; addr++) {
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// Try to communicate with the device at the address
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if (ioctl(file, I2C_SLAVE, addr) < 0) {
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// Device not found
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continue;
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}
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// Device found, print the address
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printf("I2C device found at address 0x%02x\n", addr);
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}
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// Close the I2C bus
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close(file);
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return 0;
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}
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