ctrl.h

来自「足球机器人自动程序」· C头文件 代码 · 共 64 行

#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