Ryo Iizuka / NySNICInterface

customized SNICInterface

Dependents:   MurataTypeYD_Ping

Fork of NySNICInterface by Ryo Iizuka

SNIC/SNIC_UartMsgUtil.cpp@29:6a0ba999597d, 2014-05-26 (annotated)

Committer:
kishino
Date:
Mon May 26 05:17:28 2014 +0000
Revision:
29:6a0ba999597d
Parent:
26:f2e1030964e4
Child:
31:15c22824cc46
Changed the receive logic of UART.; Changed the use area of the global buffer.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kishino 20:dd736d328de6 1 /******************* Murata Manufacturing Co.,Ltd. 2014 *****************
kishino 20:dd736d328de6 2 *
kishino 20:dd736d328de6 3 * Filename: SNIC_UartMsgUtil.cpp
kishino 20:dd736d328de6 4 *
kishino 20:dd736d328de6 5 * Purpose: This module has implementation of function for utilities
kishino 20:dd736d328de6 6 * of SNIC UART Command.
kishino 20:dd736d328de6 7 *
kishino 20:dd736d328de6 8 * $Author: kishino $
kishino 20:dd736d328de6 9 *
kishino 20:dd736d328de6 10 * $Date: 2014/03/26 $
kishino 20:dd736d328de6 11 *
kishino 20:dd736d328de6 12 * $Revision: 0.0.0.1 $
kishino 20:dd736d328de6 13 * ***********************************************************************/
kishino 20:dd736d328de6 14 #include "SNIC_UartMsgUtil.h"
kishino 20:dd736d328de6 15
kishino 20:dd736d328de6 16 C_SNIC_UartMsgUtil::C_SNIC_UartMsgUtil()
kishino 20:dd736d328de6 17 {
kishino 20:dd736d328de6 18 }
kishino 20:dd736d328de6 19
kishino 26:f2e1030964e4 20 C_SNIC_UartMsgUtil::~C_SNIC_UartMsgUtil()
kishino 26:f2e1030964e4 21 {
kishino 26:f2e1030964e4 22 }
kishino 26:f2e1030964e4 23
kishino 20:dd736d328de6 24 unsigned short C_SNIC_UartMsgUtil::makePayload( unsigned int cmd_len, unsigned char *cmd_p, unsigned char *payload_p )
kishino 20:dd736d328de6 25 {
kishino 20:dd736d328de6 26 unsigned short payload_len = 0;
kishino 20:dd736d328de6 27 int i;
kishino 20:dd736d328de6 28
kishino 20:dd736d328de6 29 for( i = 0; i < cmd_len; i++, payload_p++, payload_len++ )
kishino 20:dd736d328de6 30 {
kishino 20:dd736d328de6 31 /* check Escape code */
kishino 20:dd736d328de6 32 if( ( cmd_p[i] == UART_CMD_SOM ) || ( cmd_p[i] == UART_CMD_EOM ) || ( cmd_p[i] == UART_CMD_ESC ) )
kishino 20:dd736d328de6 33 {
kishino 20:dd736d328de6 34 /* Add ESC */
kishino 20:dd736d328de6 35 *payload_p = UART_CMD_ESC;
kishino 20:dd736d328de6 36 payload_len++;
kishino 20:dd736d328de6 37
kishino 20:dd736d328de6 38 payload_p++;
kishino 20:dd736d328de6 39 *payload_p = (0x80 | cmd_p[i]);
kishino 20:dd736d328de6 40 }
kishino 20:dd736d328de6 41 else
kishino 20:dd736d328de6 42 {
kishino 20:dd736d328de6 43 *payload_p = cmd_p[i];
kishino 20:dd736d328de6 44 }
kishino 20:dd736d328de6 45 }
kishino 20:dd736d328de6 46
kishino 20:dd736d328de6 47 return payload_len;
kishino 20:dd736d328de6 48 }
kishino 20:dd736d328de6 49
kishino 20:dd736d328de6 50 unsigned int C_SNIC_UartMsgUtil::makeRequest( unsigned char cmd_id,unsigned char *payload_p
kishino 20:dd736d328de6 51 , unsigned short payload_len, unsigned char *uart_command_p )
kishino 20:dd736d328de6 52 {
kishino 20:dd736d328de6 53 unsigned char check_sum = 0; // Check Sum
kishino 20:dd736d328de6 54 unsigned int uart_cmd_len = 0;
kishino 20:dd736d328de6 55 int i;
kishino 20:dd736d328de6 56
kishino 20:dd736d328de6 57 // set SOM
kishino 20:dd736d328de6 58 *uart_command_p = UART_CMD_SOM;
kishino 20:dd736d328de6 59 uart_command_p++;
kishino 20:dd736d328de6 60 uart_cmd_len++;
kishino 20:dd736d328de6 61
kishino 20:dd736d328de6 62 // set payload length L0
kishino 20:dd736d328de6 63 *uart_command_p = (0x80 | (payload_len & 0x007f));
kishino 20:dd736d328de6 64 check_sum += *uart_command_p;
kishino 20:dd736d328de6 65 uart_command_p++;
kishino 20:dd736d328de6 66 uart_cmd_len++;
kishino 20:dd736d328de6 67
kishino 20:dd736d328de6 68 // set payload length L1
kishino 20:dd736d328de6 69 *uart_command_p = (0x80 | ( (payload_len >> 7) & 0x003f));
kishino 20:dd736d328de6 70 check_sum += *uart_command_p;
kishino 20:dd736d328de6 71 uart_command_p++;
kishino 20:dd736d328de6 72 uart_cmd_len++;
kishino 20:dd736d328de6 73
kishino 20:dd736d328de6 74 // set Command ID
kishino 20:dd736d328de6 75 *uart_command_p = (0x80 | cmd_id);
kishino 20:dd736d328de6 76 check_sum += *uart_command_p;
kishino 20:dd736d328de6 77 uart_command_p++;
kishino 20:dd736d328de6 78 uart_cmd_len++;
kishino 20:dd736d328de6 79
kishino 20:dd736d328de6 80 // set Payload
kishino 20:dd736d328de6 81 for( i = 0; i < payload_len; i++, uart_command_p++, uart_cmd_len++ )
kishino 20:dd736d328de6 82 {
kishino 20:dd736d328de6 83 *uart_command_p = payload_p[i];
kishino 20:dd736d328de6 84 check_sum += *uart_command_p;
kishino 20:dd736d328de6 85 }
kishino 20:dd736d328de6 86
kishino 20:dd736d328de6 87 // set Check sum
kishino 20:dd736d328de6 88 *uart_command_p = (0x80 | check_sum);
kishino 20:dd736d328de6 89 uart_command_p++;
kishino 20:dd736d328de6 90 uart_cmd_len++;
kishino 20:dd736d328de6 91
kishino 20:dd736d328de6 92 // set EOM
kishino 20:dd736d328de6 93 *uart_command_p = UART_CMD_EOM;
kishino 20:dd736d328de6 94 uart_cmd_len++;
kishino 20:dd736d328de6 95
kishino 20:dd736d328de6 96 return uart_cmd_len;
kishino 20:dd736d328de6 97 }
kishino 20:dd736d328de6 98
kishino 20:dd736d328de6 99 unsigned int C_SNIC_UartMsgUtil::getResponsePayload( unsigned int recvdata_len, unsigned char *recvdata_p
kishino 20:dd736d328de6 100 , unsigned char *command_id_p, unsigned char *payload_p )
kishino 20:dd736d328de6 101 {
kishino 20:dd736d328de6 102 unsigned short payload_len = 0;
kishino 20:dd736d328de6 103 unsigned int response_len = 0;
kishino 20:dd736d328de6 104 unsigned char *buf = NULL;
kishino 20:dd736d328de6 105 bool isESC = false;
kishino 20:dd736d328de6 106 int i;
kishino 20:dd736d328de6 107
kishino 20:dd736d328de6 108 // get payload length
kishino 20:dd736d328de6 109 payload_len = ( ( (recvdata_p[1] & ~0x80) & 0xff) | ( ( (recvdata_p[2] & ~0xC0) << 7) & 0xff80) );
kishino 20:dd736d328de6 110
kishino 20:dd736d328de6 111 // get Command ID
kishino 20:dd736d328de6 112 *command_id_p = (recvdata_p[3] & ~0x80);
kishino 20:dd736d328de6 113
kishino 20:dd736d328de6 114 buf = &recvdata_p[4];
kishino 20:dd736d328de6 115
kishino 20:dd736d328de6 116 // get payload data
kishino 20:dd736d328de6 117 for( i = 0; i < payload_len; i++, buf++ )
kishino 20:dd736d328de6 118 {
kishino 20:dd736d328de6 119 if( isESC )
kishino 20:dd736d328de6 120 {
kishino 20:dd736d328de6 121 *payload_p = (*buf & ~0x80);
kishino 20:dd736d328de6 122 payload_p++;
kishino 20:dd736d328de6 123 response_len++;
kishino 20:dd736d328de6 124 isESC = false;
kishino 20:dd736d328de6 125 }
kishino 20:dd736d328de6 126 else
kishino 20:dd736d328de6 127 {
kishino 20:dd736d328de6 128 // Check Escape code
kishino 20:dd736d328de6 129 if( *buf == UART_CMD_ESC )
kishino 20:dd736d328de6 130 {
kishino 20:dd736d328de6 131 isESC = true;
kishino 20:dd736d328de6 132 continue;
kishino 20:dd736d328de6 133 }
kishino 20:dd736d328de6 134 else
kishino 20:dd736d328de6 135 {
kishino 20:dd736d328de6 136 *payload_p = *buf;
kishino 20:dd736d328de6 137 payload_p++;
kishino 20:dd736d328de6 138 response_len++;
kishino 20:dd736d328de6 139 }
kishino 20:dd736d328de6 140 }
kishino 20:dd736d328de6 141 }
kishino 20:dd736d328de6 142
kishino 20:dd736d328de6 143 return response_len;
kishino 20:dd736d328de6 144 }