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view dmx_usb_module/dmx_usb_test.c @ 2326:e9caffe926df
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author | drewp@bigasterisk.com |
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date | Thu, 01 Jun 2023 18:30:25 -0700 |
parents | 2b2ad8e7cb9f |
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/* * $Id: dmx_usb_test.c 40 2004-09-11 11:16:39Z erwin $ */ #include <stdio.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <unistd.h> #include <stdlib.h> int main(int argc, char* argv[]) { unsigned char buffer[513]; int fd; int res; int i; fd = open("/dev/dmx0",O_WRONLY); if (fd < 0) { perror("open"); exit(-1); } for (i = 0; i < 513;i++) { buffer[i] = i; } buffer[512] = 0x55; while(1) { res = write(fd, buffer, 513); if (res < 0){ perror("write"); exit(-1); } } close(fd); return 0; }