📄 xmodem.lst
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C51 COMPILER V8.16 XMODEM 02/05/2010 12:14:15 PAGE 1
C51 COMPILER V8.16, COMPILATION OF MODULE XMODEM
OBJECT MODULE PLACED IN xmodem.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE xmodem.c LARGE BROWSE DEBUG OBJECTEXTEND
line level source
1 #include <c8051f310.h>
2 #include <intrins.h>
3 #include <string.h>
4 #include <stdio.h>
5 #include "bootloader.h"
6 #include "flash.h"
7 #include "xmodem.h"
8
9 /*
10 Xmodem Frame form: <SOH><blk><255-blk><--128 data bytes--><CRC hi><CRC lo>
11 1K-Xmodem Frame form: <SOH><blk><255-blk><--1024 data bytes--><CRC hi><CRC lo>
12 */
13 //#define XMODEM_SOH 0x01
14 //#define XMODEM_STX 0x02
15 #define XMODEM_EOT 0x04
16 #define XMODEM_ACK 0x06
17 #define XMODEM_NAK 0x15
18 #define XMODEM_CAN 0x18 // Cancel
19
20
21 #define USE_1K_XMODEM 0 /* 1 for use 1k_xmodem, 0 for xmodem */
22
23 #if (USE_1K_XMODEM) //for 1K xmodem protocol
#define XMODEM_DATA_SIZE 1024
#define XMODEM_HEAD 0x02
#else //for Xmodem protocol
28 #define XMODEM_DATA_SIZE 128
29 #define XMODEM_HEAD 0x01
30
31 #endif
32
33
34
35 UI8_T xdata frame_data[128];
36 UI8_T pack_counter;
37 UI16_T real_pack_counter;
38 // Table of CRC constants - implements x^16+x^12+x^5+1
39 UI16_T code crc16_tab[] = {
40 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
41 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
42 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
43 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
44 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
45 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
46 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
47 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
48 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
49 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
50 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
51 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
52 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
53 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
54 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
55 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
C51 COMPILER V8.16 XMODEM 02/05/2010 12:14:15 PAGE 2
56 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
57 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
58 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
59 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
60 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
61 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
62 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
63 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
64 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
65 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
66 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
67 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
68 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
69 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
70 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
71 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0,
72 };
73
74
75
76 // 从串口接收一字节
77 UI8_T serial_get_char(void)
78 {
79 1 UI8_T cTm;
80 1
81 1 while(!RI0);
82 1 cTm = SBUF0;
83 1 RI0 = 0;
84 1 return cTm;
85 1 }
86
87 // 向串口发送一字节
88 void serial_put_char(UI8_T c)
89 {
90 1 while(!TI0);
91 1 TI0 = 0;
92 1 SBUF0 = c;
93 1 }
94
95 // 等串口有数据
96 // 返回0=无数据,1=有数据
97 I8_T WaitChar(int tn)
98 {
99 1 unsigned long ulTmo;
100 1 while(tn--)
101 1 {
102 2 for (ulTmo=0; ulTmo<40000; ulTmo++)
103 2 {
104 3 if (RI0)return 1;
105 3 }
106 2
107 2 }
108 1 return 0;
109 1 }
110
111
112
113 // 接收数据帧
114 int GetRecord(unsigned char blocknum, unsigned char *dest)
115 {
116 1 UI8_T nextChar;
117 1 I16_T size;
C51 COMPILER V8.16 XMODEM 02/05/2010 12:14:15 PAGE 3
118 1 UI16_T chk;
119 1
120 1 nextChar = serial_get_char();
121 1 if (nextChar != (255-blocknum))
122 1 {
123 2 return 0;
124 2 }
125 1 chk = 0;
126 1 for (size = 0; size < XMODEM_DATA_SIZE; ++size)
127 1 {
128 2 nextChar = serial_get_char();
129 2 chk = crc16_tab[((chk>>8) ^ nextChar) & 0xFF] ^ (chk << 8);
130 2 dest[size] = nextChar;
131 2 }
132 1 nextChar = serial_get_char();
133 1 if (nextChar != ((chk >> 8) & 0xFF)) return 0;
134 1 nextChar = serial_get_char();
135 1 if (nextChar != (chk& 0xFF)) return 0;
136 1 return 1;
137 1 }
138
139
140 #define INVALID_STATE 0
141 #define WAITING_START 1
142 #define WAIT_SOH 2
143 #define RX_PACKET 3
144 #define RX_EOT 4
145 #define SEND_NAK 5
146
147 // xmodem协议接收文件
148 I8_T xmodem_rx(void)
149 {
150 1 I8_T ntry;
151 1 I8_T state;
152 1 UI8_T nextChar;
153 1 UI16_T i;
154 1
155 1 ntry = 0;
156 1 pack_counter = 1;
157 1 real_pack_counter = 1;
158 1 state = WAITING_START;
159 1
160 1 while(1)
161 1 {
162 2 switch(state)
163 2 {
164 3 case WAITING_START: // 请求传送
165 3 serial_put_char('C'); // 发送请求符
166 3
167 3 if (WaitChar(3))
168 3 {
169 4 nextChar = serial_get_char(); // 接收帧头
170 4 if (nextChar == XMODEM_HEAD)
171 4 {
172 5 state = RX_PACKET; // 收到帧头
173 5 }
174 4 }
175 3 break;
176 3
177 3 case WAIT_SOH: // 等帧头
178 3 nextChar = serial_get_char(); // 收帧头
179 3 if (nextChar == XMODEM_HEAD)
C51 COMPILER V8.16 XMODEM 02/05/2010 12:14:15 PAGE 4
180 3 {
181 4 state = RX_PACKET;
182 4 }
183 3
184 3 else if (nextChar == XMODEM_EOT) // 收到终止符
185 3 {
186 4 state = RX_EOT;
187 4 serial_put_char(XMODEM_ACK); // 回送应答符
188 4 return (1); // 结束
189 4 }
190 3
191 3 else if (nextChar == XMODEM_CAN) // 取消
192 3 {
193 4 return (0); //by gjk 当取消时修改成0 默认返回1
194 4 }
195 3 break;
196 3
197 3 case RX_PACKET: // 收帧
198 3 nextChar = serial_get_char(); // 收帧计数
199 3 if (nextChar != pack_counter) // 帧计数是否正确
200 3 {
201 4 serial_put_char(XMODEM_CAN); // 不正确,取消传送
202 4 serial_put_char(XMODEM_CAN);
203 4 serial_put_char(XMODEM_CAN);
204 4 serial_put_char(XMODEM_CAN);
205 4 return (-1);
206 4 }
207 3 if (GetRecord(pack_counter, frame_data)) //收数据
208 3 {
209 4 //处理接收到的数据
210 4 //可写空间0x1000 - 0x3dff
211 4 if(real_pack_counter >32 && real_pack_counter <= 124){
212 5 for(i = 0; i < XMODEM_DATA_SIZE; i++){
213 6 FLASH_ByteWrite (128*(real_pack_counter - 1) + i, frame_data[i]);
214 6 }
215 5 }
216 4
217 4 ++pack_counter;
218 4 ++real_pack_counter; // 计数加1
219 4 ntry = 0;
220 4 state = WAIT_SOH; // 等下一个帧
221 4 serial_put_char(XMODEM_ACK); // 发送应答
222 4 }
223 3 else // 收数据错误
224 3 {
225 4 if (++ntry >9) // 错误次数超出限制
226 4 {
227 5 serial_put_char(XMODEM_CAN); // 取消传送
228 5 serial_put_char(XMODEM_CAN);
229 5 serial_put_char(XMODEM_CAN);
230 5 serial_put_char(XMODEM_CAN);
231 5 return (-1);
232 5 }
233 4 state = WAIT_SOH;
234 4 serial_put_char(XMODEM_NAK); // 请求重传
235 4 }
236 3 break;
237 3
238 3 default:
239 3 break;
240 3 }
241 2 }
C51 COMPILER V8.16 XMODEM 02/05/2010 12:14:15 PAGE 5
242 1 return 0;
243 1 }
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 659 ----
CONSTANT SIZE = 512 ----
XDATA SIZE = 131 19
PDATA SIZE = ---- ----
DATA SIZE = ---- ----
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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