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#include <linux/types.h>
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#include <linux/input.h>
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#include <linux/hidraw.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <errno.h>
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int main(int argc, char **argv)
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{
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int fd;
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int res = 0;
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char buf[256];
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if (argc != 5) {
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printf("set_led takes 4 arguments\n");
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return 1;
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}
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/* Open the Device with non-blocking reads. In real life,
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don't use a hard coded path; use libudev instead. */
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fd = open("/dev/hidraw2", O_RDWR|O_NONBLOCK);
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if (fd < 0) {
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perror("Unable to open device");
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return 1;
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}
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memset(buf, 0x0, sizeof(buf));
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if (argv[1][0] == '1') buf[2] = 0xff;
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if (argv[2][0] == '1') buf[3] = 0xff;
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if (argv[3][0] == '1') buf[4] = 0xff;
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if (argv[4][0] == '1') buf[5] = 0xff;
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/* Send a Report to the Device */
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buf[0] = 0x00; /* Report Number */
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buf[1] = 0x00; /* Report ID */
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/*buf[2] = 0x00; Buzzer 1 */
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/*buf[3] = 0x00; Buzzer 2 */
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/*buf[4] = 0x00; Buzzer 3 */
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/*buf[5] = 0x00; Buzzer 4 */
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res = write(fd, buf, 6);
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if (res < 0) {
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printf("Error: %d\n", errno);
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perror("write");
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} else {
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/*printf("write() wrote %d bytes\n", res); */
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}
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close(fd);
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return 0;
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}
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