commandline/i2cget.c


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#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "i2c-util.h"

int main(int argc, char **argv)
{
	int address, command;
	unsigned char ret;

	i2c_init();
	i2c_start();

	if (argc < 3) {
		fputs("Usage: vusb-i2cget <address> <register>", stderr);
		return 1;
	}

	address = atoi(argv[1]);
	command = atoi(argv[2]);
	i2c_tx_byte((address << 1) | 0);
	i2c_tx_byte(command);
	i2c_start();
	i2c_tx_byte((address << 1) | 1);
	ret = i2c_rx_byte();

	i2c_stop();
	i2c_deinit();

	printf("%i\n", ret);

	return 0;
}