Revert "更改协议处理部分，但是串口没反应？"

This reverts commit 705cb68764.

inc/rs485_protocol.h

@@ -13,12 +13,13 @@
 #include "fwdgt.h"
 #include <stddef.h>
 #include <stdio.h>
-#include <stdlib.h>
 #include <string.h>
 #include "ultrasonic_analog.h"
 
 /******************************************************************************/
 
+#define RX_BUFFER_SIZE            32
+
 #define PROTOCOL_PACKAGE_HEADER   0xD5
 #define PROTOCOL_BOARD_TYPE       0x04
 #define PROTOCOL_PACKAGE_LENGTH   0x02
@@ -42,16 +43,10 @@ typedef enum
     PS_PAYLOAD,
     PS_CRC,
     PS_NULL
-} packet_state_t;
+} packet_state;
 
 /******************************************************************************/
 
-#define BUF_SIZE              8
-#define MAX_CMD_SIZE          16
-#define PACKET_START_BYTE     0xD5
-
-
-bool code_seen(char code);
 // void process_command(uint8_t* cmd, size_t length);
 void process_command(void);