?? ctrl.h
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#ifndef CTRL_H#define CTRL_H#include <stdio.h>#include <stdlib.h>#include <unistd.h>#include "cmd.h"inline void print_buf(char *buf, int n) { int i = 0; for (; i<n; ++i) printf("%hhx ", buf[i]); printf("\n");}inline void copy_buf(char *dst, char *src, int n) { int i = 0; for (; i<n; ++i) *(dst++) = *(src++);}inline void ctrl_init(int fd) { int n; char buf[4]; printf("control program version %d\n", VERSION); printf("check version ...\n"); buf[0] = CLR; buf[1] = VER; if (write(fd, buf, 2) != 2) { fprintf(stderr, "write error\n"); exit(-1); } if ((n = read(fd, buf, sizeof(buf))) != 3) { if (n == -1) { perror("read"); } else { fprintf(stderr, "read error\n"); print_buf(buf, n); } exit(-1); } if (buf[1] != 3 || buf[2] != VERSION) { fprintf(stderr, "version check error\n"); print_buf(buf, 3); exit(-1); } printf("version ok\n"); printf("system init\n"); buf[0] = STOP; if (write(fd, buf, 1) != 1) { fprintf(stderr, "write error\n"); exit(-1); }}#endif?? 快捷鍵說明
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