这是蘑菇项目的message定义

message.h

#ifndef __MESSAGE__H__
#define __MESSAGE__H__

#include <inttypes.h>

const static char HEADER[] = "MUSHROOM";
const static char END = 0x13;

struct message_s {
	char header[sizeof(HEADER)];
	int32_t pb_len;   // 4 bytes
	int32_t pb_type;  // 4 bytes
	void *pb_data;
	int32_t crc;   // 4 bytes
	char end;
};

typedef struct message_s message_t;

#endif