-
Notifications
You must be signed in to change notification settings - Fork 1
/
spi.LST
298 lines (286 loc) · 10.9 KB
/
spi.LST
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
C51 COMPILER V7.20 SPI 06/11/2009 12:00:43 PAGE 1
C51 COMPILER V7.20, COMPILATION OF MODULE SPI
OBJECT MODULE PLACED IN spi.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.exe spi.c DB OE LARGE OT(0,SPEED)
line level source
1 //------------------------------------------------------------------------------------
2 // Includes
3 //------------------------------------------------------------------------------------
4 #include "c8051f3xx.h"
5 #include "spi.h"
6 #include "delay.h"
7
8
9 //------------------------------------------------------------------------------------
10 // Global VARIABLES
11 //------------------------------------------------------------------------------------
12 bdata unsigned char dummy_bit;
13 sbit dummy_bit7 = dummy_bit^7;
14 sbit dummy_bit6 = dummy_bit^6;
15 sbit dummy_bit5 = dummy_bit^5;
16 sbit dummy_bit4 = dummy_bit^4;
17 sbit dummy_bit3 = dummy_bit^3;
18 sbit dummy_bit2 = dummy_bit^2;
19 sbit dummy_bit1 = dummy_bit^1;
20 sbit dummy_bit0 = dummy_bit^0;
21
22
23 //------------------------------------------------------------------------------------
24 // Function PROTOTYPES
25 //------------------------------------------------------------------------------------
26 void spi_init(void);
27 //unsigned char spi_read_byte(void);
28 //void spi_write_byte(unsigned char data_in);
29 unsigned char spi_transfer(unsigned char data_in);
30 unsigned char spi_read_eeprom(unsigned int addr);
31 void spi_write_eeprom(unsigned int addr, unsigned char data_in);
32 unsigned char spi_read_sensor(unsigned char addr);
33 void spi_write_sensor(unsigned char addr, unsigned char data_in);
34
35
36 //------------------------------------------------------------------------------------
37 // InitSeq
38 //------------------------------------------------------------------------------------
39 void spi_init(void)
40 {
41 1 EA = 0;
42 1 NCS = 1;
43 1 SCLK = 1;
44 1 MISO = 1;
45 1 MOSI = 1;
46 1 EE_NCS = 1;
47 1 P0MDOUT = 0x5A;
48 1 EA = 1;
49 1 }
50
51
52 //------------------------------------------------------------------------------------
53 // Functions
54 //------------------------------------------------------------------------------------
55 /*
C51 COMPILER V7.20 SPI 06/11/2009 12:00:43 PAGE 2
56 unsigned char spi_read_byte(void)
57 {
58 SCLK = 0; delay1();
59 SCLK = 1; delay1();
60 dummy_bit7 = MISO;
61
62 SCLK = 0; delay1();
63 SCLK = 1; delay1();
64 dummy_bit6 = MISO;
65
66 SCLK = 0; delay1();
67 SCLK = 1; delay1();
68 dummy_bit5 = MISO;
69
70 SCLK = 0; delay1();
71 SCLK = 1; delay1();
72 dummy_bit4 = MISO;
73
74 SCLK = 0; delay1();
75 SCLK = 1; delay1();
76 dummy_bit3 = MISO;
77
78 SCLK = 0; delay1();
79 SCLK = 1; delay1();
80 dummy_bit2 = MISO;
81
82 SCLK = 0; delay1();
83 SCLK = 1; delay1();
84 dummy_bit1 = MISO;
85
86 SCLK = 0; delay1();
87 SCLK = 1; delay1();
88 dummy_bit0 = MISO;
89
90 return dummy_bit;
91 }
92 */
93
94
95 /*
96 void spi_write_byte(unsigned char data_in)
97 {
98 // P0MDOUT |= 0x08;
99 dummy_bit = data_in;
100
101 SCLK = 0;
102 MOSI = dummy_bit7; delay1();
103 SCLK = 1; delay1();
104
105 SCLK = 0;
106 MOSI = dummy_bit6; delay1();
107 SCLK = 1; delay1();
108
109 SCLK = 0;
110 MOSI = dummy_bit5; delay1();
111 SCLK = 1; delay1();
112
113 SCLK = 0;
114 MOSI = dummy_bit4; delay1();
115 SCLK = 1; delay1();
116
117 SCLK = 0;
C51 COMPILER V7.20 SPI 06/11/2009 12:00:43 PAGE 3
118 MOSI = dummy_bit3; delay1();
119 SCLK = 1; delay1();
120
121 SCLK = 0;
122 MOSI = dummy_bit2; delay1();
123 SCLK = 1; delay1();
124
125 SCLK = 0;
126 MOSI = dummy_bit1; delay1();
127 SCLK = 1; delay1();
128
129 SCLK = 0;
130 MOSI = dummy_bit0; delay1();
131 SCLK = 1; delay1();
132
133 // P0MDOUT &= ~0x08;
134 MOSI = 1;
135 }
136 */
137
138
139 unsigned char spi_transfer(unsigned char data_in)
140 {
141 1 dummy_bit = data_in;
142 1 MOSI = dummy_bit7;
143 1 SCLK = 0; delay1();
144 1 SCLK = 1; delay1();
145 1 dummy_bit7 = MISO;
146 1
147 1 MOSI = dummy_bit6;
148 1 SCLK = 0; delay1();
149 1 SCLK = 1; delay1();
150 1 dummy_bit6 = MISO;
151 1
152 1 MOSI = dummy_bit5;
153 1 SCLK = 0; delay1();
154 1 SCLK = 1; delay1();
155 1 dummy_bit5 = MISO;
156 1
157 1 MOSI = dummy_bit4;
158 1 SCLK = 0; delay1();
159 1 SCLK = 1; delay1();
160 1 dummy_bit4 = MISO;
161 1
162 1 MOSI = dummy_bit3;
163 1 SCLK = 0; delay1();
164 1 SCLK = 1; delay1();
165 1 dummy_bit3 = MISO;
166 1
167 1 MOSI = dummy_bit2;
168 1 SCLK = 0; delay1();
169 1 SCLK = 1; delay1();
170 1 dummy_bit2 = MISO;
171 1
172 1 MOSI = dummy_bit1;
173 1 SCLK = 0; delay1();
174 1 SCLK = 1; delay1();
175 1 dummy_bit1 = MISO;
176 1
177 1 MOSI = dummy_bit0;
178 1 SCLK = 0; delay1();
179 1 SCLK = 1; delay1();
C51 COMPILER V7.20 SPI 06/11/2009 12:00:43 PAGE 4
180 1 dummy_bit0 = MISO;
181 1
182 1 return dummy_bit;
183 1 }
184
185
186 unsigned char spi_read_eeprom(unsigned int addr)
187 {
188 1 unsigned char temp;
189 1 EE_NCS = 0;
190 1 if((addr & 0x0100) == 0x0100)
191 1 {
192 2 temp = (READ_DATA | 0x08);
193 2 }
194 1 else
195 1 {
196 2 temp = READ_DATA;
197 2 }
198 1 spi_transfer(temp);
199 1 spi_transfer((unsigned char)addr);
200 1 temp = spi_transfer(0xff);
201 1 EE_NCS = 1;
202 1
203 1 return temp;
204 1 }
205
206
207 void spi_write_eeprom(unsigned int addr, unsigned char data_in)
208 {
209 1 unsigned char temp;
210 1
211 1 EE_NCS = 0;
212 1 delay1();
213 1 spi_transfer(WRITE_ENABLE);
214 1 EE_NCS = 1;
215 1
216 1 delay_us(300);
217 1
218 1 EE_NCS = 0;
219 1 delay1();
220 1 if((addr & 0x0100) == 0x0100)
221 1 {
222 2 temp = (WRITE_DATA | 0x08);
223 2 }
224 1 else
225 1 {
226 2 temp = WRITE_DATA;
227 2 }
228 1 spi_transfer(temp);
229 1 delay1();
230 1 spi_transfer((unsigned char)addr);
231 1 delay1();
232 1 spi_transfer(data_in);
233 1 delay1();
234 1 EE_NCS = 1;
235 1 }
236
237
238 unsigned char spi_read_sensor(unsigned char addr)
239 {
240 1 unsigned char temp;
241 1 NCS = 0;
C51 COMPILER V7.20 SPI 06/11/2009 12:00:43 PAGE 5
242 1 delay1();
243 1 spi_transfer(addr);
244 1 delay_us(100);
245 1 temp = spi_transfer(0xff);
246 1 delay_us(120);
247 1 NCS = 1;
248 1
249 1 return temp;
250 1 }
251
252
253 void spi_write_sensor(unsigned char addr, unsigned char data_in)
254 {
255 1 NCS = 0;
256 1 delay1();
257 1 spi_transfer(addr | 0x80);
258 1 delay_us(50);
259 1 spi_transfer(data_in);
260 1 delay_us(30);
261 1 NCS = 1;
262 1 }
263
264
265
266
267
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 444 ----
CONSTANT SIZE = ---- ----
XDATA SIZE = 12 ----
PDATA SIZE = ---- ----
DATA SIZE = 1 ----
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)