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d8fa6a36 L |
1 | program RTCDemo;\r |
2 | {$C- } {Sonst funktioniert 'keypressed' nicht}\r | |
3 | \r | |
4 | {---------------------------------------------------------------------\r | |
5 | AVRCPM \r | |
6 | Test und Demonstration des I2C-Interface\r | |
7 | I2C Uhrenchip PCF8583 \r | |
8 | Zeit und Datum lesen und schreiben\r | |
9 | \r | |
10 | Moegliche Erweiterung (TODO:):\r | |
11 | - Control/Status-Register und Alarmregister lesen/schreiben\r | |
12 | - RAM lesen/schreiben\r | |
13 | \r | |
14 | $Id$\r | |
15 | ----------------------------------------------------------------------}\r | |
16 | \r | |
17 | const\r | |
18 | I2CCMD = 5; {adr of I2C Command Port (1=read, 2=write)}\r | |
19 | I2CMSGLEN = 6; {Transferpuffergroesse}\r | |
20 | I2CADRL = 7; {Transferpufferadresse low/high}\r | |
21 | I2CADRH = 8;\r | |
22 | \r | |
23 | I2C_CMD_Read = 1; {I2C Read Command}\r | |
24 | I2C_CMD_Write = 2; {I2C Write Command}\r | |
25 | \r | |
26 | { TP Delay Loop }\r | |
27 | T100ms = 100; {20MHz AVR + Config fuer 3 MHz Z80 (TINST)}\r | |
28 | {T100ms = 75;} {20MHz AVR + Config fuer 4 MHz Z80 (TINST default)}\r | |
29 | \r | |
30 | type\r | |
31 | I2CBufLen = 0..16;\r | |
32 | \r | |
33 | CalTime = record\r | |
34 | sec: 0..59;\r | |
35 | min: 0..59;\r | |
36 | hrs: 0..23;\r | |
37 | day: 1..31;\r | |
38 | month: 1..12;\r | |
39 | year: integer;\r | |
40 | end;\r | |
41 | \r | |
42 | DTinput = array [1..3] of integer;\r | |
43 | \r | |
44 | var\r | |
45 | msgbuf : array[0..16] of Byte; {TODO: Transferbuffer nicht global}\r | |
46 | \r | |
47 | Time : CalTime;\r | |
48 | Done: boolean;\r | |
49 | \r | |
50 | {---------------------------------------------------------------------\r | |
51 | Debugging: Print 16 byte RAM ab adr \r | |
52 | ----------------------------------------------------------------------}\r | |
53 | procedure hexdump(adr: integer);\r | |
54 | var\r | |
55 | i: integer;\r | |
56 | c: byte;\r | |
57 | \r | |
58 | function hexdigit(c: byte): char;\r | |
59 | begin\r | |
60 | if c < 10 then\r | |
61 | hexdigit := char(c + $30)\r | |
62 | else\r | |
63 | hexdigit := char(c - 10 + $41);\r | |
64 | end;\r | |
65 | \r | |
66 | {TODO: print adr }\r | |
67 | begin\r | |
68 | for i := 0 to 15 do\r | |
69 | begin\r | |
70 | c := Mem[adr+i];\r | |
71 | write(hexdigit(c shr 4), hexdigit(c and $f), ' ');\r | |
72 | end;\r | |
73 | writeln;\r | |
74 | end;\r | |
75 | \r | |
76 | {---------------------------------------------------------------------\r | |
77 | I2C - Routinen\r | |
78 | ----------------------------------------------------------------------}\r | |
79 | procedure i2c_init;\r | |
80 | var\r | |
81 | i: integer;\r | |
82 | begin\r | |
83 | msgbuf[0] := $A0; {I2C-Adresse des RTC-Chips}\r | |
84 | \r | |
85 | Port[I2CADRH] := Hi(Addr(msgbuf));\r | |
86 | Port[I2CADRL] := Lo(Addr(msgbuf));\r | |
87 | end;\r | |
88 | \r | |
89 | procedure i2c_write(len:Byte);\r | |
90 | begin\r | |
91 | Port[I2CMSGLEN] := len;\r | |
92 | Port[I2CCMD] := I2C_CMD_Write;\r | |
93 | end;\r | |
94 | \r | |
95 | procedure i2c_read(len:Byte);\r | |
96 | begin\r | |
97 | Port[I2CMSGLEN] := len;\r | |
98 | Port[I2CCMD] := I2C_CMD_Read;\r | |
99 | end;\r | |
100 | \r | |
101 | \r | |
102 | function BCDtoBINbyte(i: byte): byte;\r | |
103 | begin\r | |
104 | BCDtoBINbyte := (i div 16) * 10 + (i and $F);\r | |
105 | end;\r | |
106 | \r | |
107 | function BINtoBCDbyte(i: byte): byte;\r | |
108 | begin\r | |
109 | BINtoBCDbyte := (i div 10) * 16 + (i mod 10);\r | |
110 | end;\r | |
111 | \r | |
112 | procedure ReadRTC(var t: CalTime);\r | |
113 | begin\r | |
114 | msgbuf[1] := 2;\r | |
115 | i2c_write(2);\r | |
116 | i2c_read(6);\r | |
117 | with t do\r | |
118 | begin\r | |
119 | sec := BCDtoBINbyte(msgbuf[1]);\r | |
120 | min := BCDtoBINbyte(msgbuf[2]);\r | |
121 | hrs := BCDtoBINbyte(msgbuf[3] and $3F);\r | |
122 | end;\r | |
123 | msgbuf[1] := $10;\r | |
124 | i2c_write(2);\r | |
125 | i2c_read(3);\r | |
126 | with t do\r | |
127 | begin\r | |
128 | day := BCDtoBINbyte(msgbuf[4] and $3F);\r | |
129 | month:= BCDtoBINbyte(msgbuf[5] and $1F);\r | |
130 | year := msgbuf[1] + 256*msgbuf[2];\r | |
131 | while Lo(year) and $3 <> (msgbuf[4] shr 6) do\r | |
132 | year := year + 1;\r | |
133 | end;\r | |
134 | end;\r | |
135 | \r | |
136 | \r | |
137 | procedure WriteRTC(t: CalTime);\r | |
138 | begin\r | |
139 | with t do begin\r | |
140 | msgbuf[1] := 1; {register address}\r | |
141 | msgbuf[2] := 0; {hundredth of sec}\r | |
142 | msgbuf[3] := BINtoBCDbyte(sec);\r | |
143 | msgbuf[4] := BINtoBCDbyte(min);\r | |
144 | msgbuf[5] := BINtoBCDbyte(hrs);\r | |
145 | msgbuf[6] := BINtoBCDbyte(day) + (Lo(year) shl 6);\r | |
146 | msgbuf[7] := BINtoBCDbyte(month); {TODO: weekdays}\r | |
147 | end;\r | |
148 | i2c_write(8);\r | |
149 | \r | |
150 | msgbuf[1] := $10; {register address}\r | |
151 | with t do begin\r | |
152 | msgbuf[2] := Lo(year);\r | |
153 | msgbuf[3] := Hi(year);\r | |
154 | end;\r | |
155 | i2c_write(4);\r | |
156 | end;\r | |
157 | \r | |
158 | {---------------------------------------------------------------------\r | |
159 | Dialog Routinen\r | |
160 | ----------------------------------------------------------------------}\r | |
161 | \r | |
162 | procedure PrintTime(t: CalTime);\r | |
163 | begin\r | |
164 | with t do {TODO: Fuehrende '0' statt ' '}\r | |
165 | begin\r | |
166 | write('Zeit: ', hrs:2, ':',min:2, ':',sec:2, ' ',\r | |
167 | 'Datum: ', day, '.', month, '.', year);\r | |
168 | end;\r | |
169 | end;\r | |
170 | \r | |
171 | procedure PrintMenu;\r | |
172 | begin\r | |
173 | ClrScr;\r | |
174 | writeln('Menu:');\r | |
175 | writeln(' T) Zeit setzen');\r | |
176 | writeln(' D) Datum setzen');\r | |
177 | writeln(' Q) Quit');\r | |
178 | writeln('> ');\r | |
179 | end;\r | |
180 | \r | |
181 | function GetKey: char;\r | |
182 | var\r | |
183 | c: char;\r | |
184 | begin\r | |
185 | Read(Kbd, c);\r | |
186 | GetKey := c;\r | |
187 | end;\r | |
188 | \r | |
189 | {Daemliche input routine ohne Fehlerpruefung (TODO:)}\r | |
190 | procedure GetDateTime(var a: DTinput; sep: char);\r | |
191 | var\r | |
192 | line: String[80];\r | |
193 | s: String[4];\r | |
194 | i,j,k: integer;\r | |
195 | rc: integer;\r | |
196 | \r | |
197 | begin\r | |
198 | readln(line);\r | |
199 | line := line + sep;\r | |
200 | j := 1;\r | |
201 | for i := 1 to 3 do\r | |
202 | begin\r | |
203 | k := 1;\r | |
204 | while line[k+j] in ['0'..'9'] do\r | |
205 | k := k + 1;\r | |
206 | s := Copy(line, j, k);\r | |
207 | val(s, a[i], rc);\r | |
208 | j := j + k + 1;\r | |
209 | end;\r | |
210 | end;\r | |
211 | \r | |
212 | procedure SetTime;\r | |
213 | var\r | |
214 | a: DTinput;\r | |
215 | \r | |
216 | begin\r | |
217 | write('Zeit (hh:mm:ss): ');\r | |
218 | a[1] := -1;\r | |
219 | GetDateTime(a, ':');\r | |
220 | { writeln('intime:', a[1], ':', a[2], ':', a[3]);\r | |
221 | }\r | |
222 | if (a[1] in [0..24]) and (a[2] in [0..59]) and (a[3] in [0..59]) then\r | |
223 | begin\r | |
224 | ReadRTC(Time);\r | |
225 | Time.hrs := a[1];\r | |
226 | Time.min := a[2];\r | |
227 | Time.sec := a[3];\r | |
228 | WriteRTC(Time);\r | |
229 | end else\r | |
230 | begin\r | |
231 | writeln('Fehler in Eingabe.');\r | |
232 | end;\r | |
233 | end;\r | |
234 | \r | |
235 | procedure SetDate;\r | |
236 | var\r | |
237 | a: DTinput;\r | |
238 | \r | |
239 | begin\r | |
240 | write('Datum (TT.MM.JJJJ): ');\r | |
241 | a[1] := -1;\r | |
242 | GetDateTime(a, '.');\r | |
243 | { writeln('indate:', a[1], '.', a[2], '.', a[3]);\r | |
244 | }\r | |
245 | if (a[1] in [1..31]) and (a[2] in [1..12]) and (a[3] > 0) and (a[3] <= 2076) then\r | |
246 | begin\r | |
247 | ReadRTC(Time);\r | |
248 | Time.day := a[1];\r | |
249 | Time.month:= a[2];\r | |
250 | Time.year := a[3];\r | |
251 | WriteRTC(Time);\r | |
252 | end else\r | |
253 | begin\r | |
254 | writeln('Fehler in Eingabe.');\r | |
255 | end;\r | |
256 | end;\r | |
257 | \r | |
258 | procedure CleanConsolebuffer;\r | |
259 | var\r | |
260 | c: char;\r | |
261 | begin\r | |
262 | while keypressed do c := GetKey;\r | |
263 | end;\r | |
264 | \r | |
265 | {---------------------------------------------------------------------\r | |
266 | main\r | |
267 | ----------------------------------------------------------------------}\r | |
268 | \r | |
269 | begin\r | |
270 | PrintMenu;\r | |
271 | i2c_init;\r | |
272 | \r | |
273 | writeln;\r | |
274 | Done := False;\r | |
275 | repeat\r | |
276 | Delay(T100ms);\r | |
277 | ReadRTC(Time);\r | |
278 | GotoXY(35,1); PrintTime(Time); ClrEol;\r | |
279 | gotoXY(2,5); ClrEol;\r | |
280 | \r | |
281 | if keypressed then\r | |
282 | begin\r | |
283 | gotoXY(1,7); ClrEol;\r | |
284 | gotoXY(1,6); ClrEol;\r | |
285 | case UpCase(GetKey) of\r | |
286 | 'T': SetTime;\r | |
287 | 'D': SetDate;\r | |
288 | 'Q': Done := True;\r | |
289 | end;\r | |
290 | end;\r | |
291 | until Done;\r | |
292 | CleanConsolebuffer;\r | |
293 | end.\r | |
294 | \1a\1a\1a\1a\1a\1a\1a\1a\1a\1a\1a\1a |