📄 uart.lst
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C51 COMPILER V8.00 UART 04/23/2009 15:56:14 PAGE 1
C51 COMPILER V8.00, COMPILATION OF MODULE UART
OBJECT MODULE PLACED IN .\out_sst89e564\uart.obj
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE source\uart.c LARGE BROWSE ORDER NOAREGS DEBUG OBJECTEXTEND PRINT(.\uart.ls
-t) OBJECT(.\out_sst89e564\uart.obj)
line level source
1 //////////////////////////////////////////////
2 // uart.c //
3 // 设置波特率（需要晶振频率支持） //
4 // 晶振频率：11m0592,12m0,18m0,24m0 //
5 // design by: 刘俐训 //
6 //////////////////////////////////////////////
7
8 #include<reg52.h>
9 #include"uart.h"
10 #include"stimer.h"
11 #include"ascii.h"
12 #include <v51rx2.h>
13
14 #include "intrsc.h"
15
16 #ifndef BUF_SIZE
17 #define BUF_SIZE 32
18 #define OBUF_SIZE 16
19 #endif
20
21 #ifndef enable
#define enable() EA=1
#define disable() EA=0
#endif
25
26 #define StartSend() TI=1
27
28 static bit SbufWorking=0;
29
30 static unsigned char idata InputBuf[BUF_SIZE];
31 static unsigned char xdata OutputBuf[OBUF_SIZE];
32 static unsigned int InputOutTime=0;
33 static unsigned int OutputOutTime=0;
34
35 #if (BUF_SIZE>256)
static unsigned int data IBufGetIdx=0;
static unsigned int data IBufPutIdx=0;
#else
39 static unsigned char data IBufGetIdx=0;
40 static unsigned char data IBufPutIdx=0;
41 #endif
42 #if (OBUF_SIZE>256)
static unsigned int data OBufGetIdx=0;
static unsigned int data OBufPutIdx=0;
#else
46 static unsigned char data OBufGetIdx=0;
47 static unsigned char data OBufPutIdx=0;
48 #endif
49
50 static bit PutInputData( void );
51 static int GetInputData( void );
52 static bit PutOutputData( unsigned char abyte );
53 static bit GetOutputData( void );
54 #define EnterCrtcl() ES = 0
C51 COMPILER V8.00 UART 04/23/2009 15:56:14 PAGE 2
55 #define LeaveCrtcl() ES = 1
56
57 void InterruptCom(void) interrupt SIO_VECTOR using 1
58 {
59 1 if(RI)
60 1 {
61 2 RI=0;
62 2 PutInputData();
63 2 }
64 1
65 1 if(TI)
66 1 {
67 2 TI=0;
68 2 GetOutputData();
69 2 }
70 1 }
71
72 bit PutInputData( void )
73 {
74 1 #if (BUF_SIZE!=256)
75 1 if( IBufGetIdx ==0 )
76 1 {
77 2 if( IBufPutIdx == BUF_SIZE-1 )
78 2 return 0;
79 2 }
80 1 #endif
81 1
82 1 if(IBufPutIdx == IBufGetIdx-1)
83 1 {
84 2 return 0;
85 2 }
86 1 InputBuf[IBufPutIdx] = SBUF;
87 1 IBufPutIdx++;
88 1
89 1 #if (BUF_SIZE != 256)
90 1 if(IBufPutIdx==BUF_SIZE)
91 1 IBufPutIdx=0;
92 1 #endif
93 1
94 1 return 1;
95 1 }
96
97 int GetInputData( void )
98 {
99 1 unsigned char tmp;
100 1
101 1 EnterCrtcl();
102 1 if( IBufGetIdx == IBufPutIdx )
103 1 {
104 2 LeaveCrtcl();
105 2 return -1;
106 2 }
107 1
108 1 tmp = InputBuf[IBufGetIdx++];
109 1
110 1 #if (BUF_SIZE != 256)
111 1 if(IBufGetIdx==BUF_SIZE)
112 1 IBufGetIdx=0;
113 1 #endif
114 1
115 1 LeaveCrtcl();
116 1 return tmp;
C51 COMPILER V8.00 UART 04/23/2009 15:56:14 PAGE 3
117 1 }
118
119 bit GetOutputData( void )
120 {
121 1 if( OBufPutIdx == OBufGetIdx )
122 1 {
123 2 SbufWorking=0;
124 2 return 0;
125 2 }
126 1
127 1 SBUF = OutputBuf[OBufGetIdx];
128 1 OBufGetIdx++;
129 1 #if (OBUF_SIZE != 256)
130 1 if(OBufGetIdx==OBUF_SIZE)
131 1 OBufGetIdx=0;
132 1 #endif
133 1 return 1;
134 1 }
135
136 bit PutOutputData( unsigned char abyte )
137 {
138 1 EnterCrtcl();
139 1 #if (OBUF_SIZE!=256)
140 1 if( OBufGetIdx ==0 )
141 1 if( OBufPutIdx == OBUF_SIZE-1 )
142 1 {
143 2 LeaveCrtcl();
144 2 return 0;
145 2 }
146 1 #endif
147 1
148 1 if( OBufPutIdx == OBufGetIdx-1 )
149 1 {
150 2 LeaveCrtcl();
151 2 return 0;
152 2 }
153 1
154 1 OutputBuf[OBufPutIdx++] = abyte;
155 1
156 1 #if (OBUF_SIZE != 256)
157 1 if(OBufPutIdx==OBUF_SIZE)
158 1 OBufPutIdx=0;
159 1 #endif
160 1
161 1 if(!SbufWorking)
162 1 {
163 2 SbufWorking = 1;
164 2 StartSend();
165 2 }
166 1 LeaveCrtcl();
167 1
168 1 return 1;
169 1 }
170
171 void ComOpen(unsigned long clk, unsigned long baudrate)
172 {
173 1 unsigned char tmp;
174 1
175 1 if(baudrate >= 9000)
176 1 {
177 2 PCON |= SMOD_;
178 2 tmp = (clk >> 4) / baudrate;
C51 COMPILER V8.00 UART 04/23/2009 15:56:14 PAGE 4
179 2 }
180 1 else
181 1 {
182 2 PCON &= ~SMOD_;
183 2 tmp = (clk >> 5) / baudrate;
184 2 }
185 1
186 1 SetIntPri(SIO_VECTOR, 1);
187 1
188 1 TI = RI = 0;
189 1 SCON = 0x50;
190 1 TMOD &= 0x0F;
191 1 TMOD |= 0x20;
192 1 TR1 = 1;
193 1 TH1 = 256 - tmp;
194 1 enable();
195 1 ES=1;
196 1 }
197
198 unsigned int ComWrite( unsigned char *buf, unsigned int len )
199 {
200 1 unsigned int i;
201 1 unsigned int starttime;
202 1
203 1 for(i=0; i<len; i++)
204 1 {
205 2 starttime = GetTickCount();
206 2 while( !PutOutputData(buf[i]) )
207 2 {
208 3 if(OutputOutTime==0 || (GetTickCount() - starttime >= OutputOutTime))
209 3 return i;
210 3 }
211 2 }
212 1 return i;
213 1 }
214
215 unsigned int ComRead( unsigned char *buf, unsigned int len )
216 {
217 1 unsigned int i;
218 1 unsigned int starttime;
219 1 int tmp;
220 1
221 1 for(i=0; i<len; i++)
222 1 {
223 2 starttime = GetTickCount();
224 2 while((tmp = GetInputData()) < 0)
225 2 {
226 3 if(InputOutTime==0 || (GetTickCount() - starttime >= InputOutTime))
227 3 return i;
228 3 }
229 2 buf[i] = (unsigned char)tmp;
230 2 }
231 1 return i;
232 1 }
233
234 void ComSetTimeOut(unsigned int iouttime, unsigned int oouttime)
235 {
236 1 InputOutTime=iouttime;
237 1 OutputOutTime=oouttime;
238 1 }
239
240 unsigned int ComIBufBytesTell( void )
C51 COMPILER V8.00 UART 04/23/2009 15:56:14 PAGE 5
241 {
242 1 unsigned int ii;
243 1
244 1 if(IBufPutIdx>=IBufGetIdx)
245 1 {
246 2 ii=(unsigned int)(IBufPutIdx-IBufGetIdx);
247 2 }
248 1 else
249 1 {
250 2 ii=(unsigned int)(BUF_SIZE-IBufGetIdx+IBufPutIdx);
251 2 }
252 1 return ii;
253 1 }
254
255 void ComClear( unsigned char flag )
256 {
257 1 if( flag & 0x01 ) IBufGetIdx = IBufPutIdx;
258 1 if( flag & 0x02 ) OBufGetIdx = OBufPutIdx;
259 1 }
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 741 ----
CONSTANT SIZE = ---- ----
XDATA SIZE = 20 29
PDATA SIZE = ---- ----
DATA SIZE = 4 ----
IDATA SIZE = 32 ----
BIT SIZE = 1 ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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