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comparison code_part1/OSTC_code_asm_part1/valconv.asm @ 0:96a35aeda5f2

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Initial setup
author heinrichsweikamp
date Tue, 12 Jan 2010 15:05:59 +0100
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children e8756eba54ee
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1 ; OSTC - diving computer code
2 ; Copyright (C) 2008 HeinrichsWeikamp GbR
3
4 ; This program is free software: you can redistribute it and/or modify
5 ; it under the terms of the GNU General Public License as published by
6 ; the Free Software Foundation, either version 3 of the License, or
7 ; (at your option) any later version.
8
9 ; This program is distributed in the hope that it will be useful,
10 ; but WITHOUT ANY WARRANTY; without even the implied warranty of
11 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 ; GNU General Public License for more details.
13
14 ; You should have received a copy of the GNU General Public License
15 ; along with this program. If not, see <http://www.gnu.org/licenses/>.
16
17
18 ; converts hex values to dez values
19 ; written by: Matthias Heinrichs, info@heinrichsweikamp.com
20 ; written: 13/10/07
21 ; last updated: 5/11/07
22 ; known bugs:
23 ; ToDo: clean up!!!
24
25
26 output_16_3 macro ; displays only last three figures from a 16Bit value (0-999)
27 clrf ignore_digits
28 incf ignore_digits,F
29 clrf temp4
30 bsf show_last3
31 movf temp4,W ; Temp4 stores position for decimal point
32 call output16
33 endm
34
35 output_16dp macro temp4 ; 16Bit with decimal point
36 movlw temp4 ; Temp4 stores position for decimal point
37 call output16
38 endm
39
40 output_16 macro ; 16Bit Normal
41 clrf ignore_digits
42 incf ignore_digits,F
43 clrf temp4
44 movf temp4,W ; Temp4 stores position for decimal point
45 call output16
46 endm
47
48 output_8 macro ; 8 Bit Normal
49 clrf ignore_digits
50 incf ignore_digits,F
51 clrf temp4
52 call output8
53 endm
54
55 output_99 macro ; displays only last two figures from a 8Bit value (0-99)
56 clrf ignore_digits
57 incf ignore_digits,F
58 clrf temp4
59 call output99
60 endm
61
62 output_99x macro ; displays only last two figures from a 8Bit value with leading zero (00-99)
63 clrf ignore_digits
64 incf ignore_digits,F
65 clrf temp4
66 call output99x
67 endm
68
69 output99:
70 movlw d'99'
71 cpfslt lo
72 movwf lo ; Limit to 99
73 movff lo, lo_temp
74 clrf hi_temp
75 bcf pre_zero_flag ; do not display leading zeros
76
77 LCD_val99_2:
78 movlw b'00001010' ; 10
79 movwf temp2
80 clrf temp3
81 rcall DEC2ASCII
82
83 movlw b'00000001' ; 1
84 movwf temp2
85 clrf temp3
86 bsf pre_zero_flag ; last figure, display zero (0)
87 rcall DEC2ASCII
88 RETURN
89
90 output99x:
91 movff lo, lo_temp
92 clrf hi_temp
93 bsf pre_zero_flag ; display leading zeros
94 bra LCD_val99_2
95
96 output8
97 movff lo, lo_temp
98 clrf hi_temp
99 bcf pre_zero_flag ; do not display leading zeros
100
101 movlw b'01100100' ; 100
102 movwf temp2
103 clrf temp3
104 rcall DEC2ASCII
105 bra LCD_val99_2
106
107 output16
108 bcf all_zeros_flag ; do not display any zero from here unless there was at least one figure /zero
109
110 movwf temp4
111
112 bsf leading_zeros
113 incf temp4,1
114 decfsz temp4,F
115 bcf leading_zeros
116
117 bsf DP_done2
118 incf temp4,1
119 decfsz temp4,F
120 bcf DP_done2 ; decimal point not yet set
121
122 movff lo, lo_temp
123 movff hi, hi_temp
124 bcf pre_zero_flag ; do not display leading zeros
125
126 movlw b'00010000' ; 10000s
127 movwf temp2
128 movlw b'00100111'
129 movwf temp3
130 btfss show_last3 ; display only last three figures?
131 rcall DEC2ASCII
132
133 movlw b'11101000' ; 1000s
134 movwf temp2
135 movlw b'00000011'
136 movwf temp3
137 btfsc DP_done2 ; Is there a decimal point at all?
138 bra output16_2 ; no, use normal display mode
139
140 btfsc all_zeros_flag ; display any zero from here
141 bra output16_1 ; there was a figure /zero already
142
143 bsf pre_zero_flag ; display figure if zero?
144 decfsz temp4,W
145 bcf pre_zero_flag ; No
146
147 output16_1:
148 btfsc DP_done ; Decimal point set already?
149 bsf pre_zero_flag ; Yes, so display the rest
150 output16_2:
151 btfss show_last3 ; display only last three figures?
152 rcall DEC2ASCII
153 bcf show_last3 ; No, so display the rest
154
155 movlw b'01100100' ; 100s
156 movwf temp2
157 clrf temp3
158
159 btfsc ignore_digit3 ; Ignore 3rd-5th digit?
160 bra output16_5 ; Yes, skip the rest
161
162 btfsc DP_done2 ; Is there a decimal point at all?
163 bra output16_3 ; no, use normal display mode
164
165 btfsc all_zeros_flag ; display any zero from here
166 bra output16_2_1 ; there was a figure /zero already
167
168 bsf pre_zero_flag ; display figure if zero?
169 decfsz temp4,W
170 bcf pre_zero_flag ; No
171
172 output16_2_1:
173 btfsc DP_done ; Decimal point set already?
174 bsf pre_zero_flag ; Yes, so display the rest
175 btfsc DP_done2 ; Is there a decimal point at all?
176 bsf pre_zero_flag ; No, so display the rest
177 output16_3:
178 rcall DEC2ASCII
179
180 movlw b'00001010' ; 10s
181 movwf temp2
182 clrf temp3
183 btfsc DP_done2
184 bra output16_4
185
186 btfsc all_zeros_flag ; display any zero from here
187 bra output16_3_1 ; there was a figure /zero already
188
189 bsf pre_zero_flag
190 decfsz temp4,W
191 bcf pre_zero_flag
192
193 output16_3_1:
194 btfsc DP_done
195 bsf pre_zero_flag
196 btfsc DP_done2
197 bsf pre_zero_flag
198 output16_4:
199 btfsc ignore_digit4 ; Ignore 4-5th digit?
200 bra output16_5 ; Yes, skip the rest
201 rcall DEC2ASCII
202
203 movlw b'00000001' ; 1s
204 movwf temp2
205 clrf temp3
206 bsf pre_zero_flag
207 btfss ignore_digit5 ; Ignore 5th digit?
208 rcall DEC2ASCII ; No!
209 bcf ignore_digit5 ; yes, and clear flag
210 output16_5:
211 bcf ignore_digit3 ; Clear flag
212 clrf ignore_digits
213 incf ignore_digits,F
214 bcf DP_done
215 RETURN
216
217 DEC2ASCII clrf temp1 ; converts into ASCII code
218 DEC2ASCII_2 movf temp3,W
219 subwf hi_temp,0
220 btfss STATUS,C
221 bra DEC2ASCII_4
222 bnz DEC2ASCII_3
223
224 movf temp2,W
225 subwf lo_temp,0
226 btfss STATUS,C
227 bra DEC2ASCII_4
228
229 DEC2ASCII_3 movf temp3,W
230 subwf hi_temp,1
231 movf temp2,W
232 subwf lo_temp,1
233 btfss STATUS,C
234 decf hi_temp,1
235 incf temp1,1
236 bsf pre_zero_flag
237 bra DEC2ASCII_2
238
239 DEC2ASCII_4
240 decfsz ignore_digits,F
241 return
242 incf ignore_digits,F
243 movlw '0' ; Offset for Ascii-value
244 addwf temp1,0
245 btfsc pre_zero_flag ; is this a leading zero?
246 bra DEC2ASCII_4_1 ; no
247 btfsc leftbind
248 bra DEC2ASCII_6
249 movlw ' ' ; instead of leading zeros a space!
250 bra DEC2ASCII_5
251
252 DEC2ASCII_4_1:
253 bsf all_zeros_flag ; display any zero from here
254 DEC2ASCII_5
255 movwf POSTINC2
256 DEC2ASCII_6
257 decfsz temp4,F ; Set decimal point?
258 RETURN ; No
259 movlw "." ; Yes
260 movwf POSTINC2
261 bsf DP_done
262 RETURN