Mercurial > public > mk2
annotate code_part1/OSTC_code_asm_part1/math.asm @ 591:2966548fbe70
move clib.lib into /lib
author | heinrichsweikamp |
---|---|
date | Mon, 28 May 2012 09:08:43 +0200 |
parents | e3ffc6d62a63 |
children | c50296c3059e |
rev | line source |
---|---|
0 | 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 ; Math routines | |
161
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
19 ; history: |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
20 ; 2005-10-30: Written by Matthias Heinrichs, info@heinrichsweikamp.com |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
21 ; 2007-06-21: MH last updated |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
22 ; 2011-01-19: Clean up of isr variante. |
0 | 23 ; known bugs: |
24 ; ToDo: clean up! | |
25 | |
88 | 26 |
0 | 27 convert_time: ; converts hi:lo in minutes to hours (hi) and minutes (lo) |
28 movff lo,xA+0 ; divide by 60... | |
29 movff hi,xA+1 ; | |
30 movlw d'60' ; | |
31 movwf xB+0 ; | |
32 clrf xB+1 ; | |
33 rcall div16x16 ; xA/xB=xC with xA as remainder | |
34 movff xC+0,hi ; Hours | |
35 movff xA+0,lo ; =remaining minutes (0.....59) | |
36 return | |
37 | |
38 div16: | |
39 ; divA=divA/2^divB (divB: 8Bit only!) | |
40 bcf STATUS,C | |
41 rrcf divA+1 | |
42 rrcf divA | |
43 decfsz divB | |
44 bra div16 | |
45 return | |
46 | |
544 | 47 sub16: ; sub_c = sub_a - sub_b (with signed values) |
0 | 48 bcf neg_flag |
74 | 49 movf sub_b+0, W ; Get Value to be subtracted |
50 subwf sub_a+0, W ; Do the High Byte | |
51 movwf sub_c+0 | |
52 movf sub_b+1, W ; Get the Value to be Subbed | |
53 subwfb sub_a+1, W | |
54 movwf sub_c+1 | |
342
06299199dfb9
Fix bad max depth value (fix sub16 to avoid trashing sub_b).
JeanDo
parents:
161
diff
changeset
|
55 |
354 | 56 btfss STATUS,N ; Negativ result ? |
57 return ; NO: result positive done. | |
342
06299199dfb9
Fix bad max depth value (fix sub16 to avoid trashing sub_b).
JeanDo
parents:
161
diff
changeset
|
58 |
354 | 59 bsf neg_flag ; MARK result negative |
342
06299199dfb9
Fix bad max depth value (fix sub16 to avoid trashing sub_b).
JeanDo
parents:
161
diff
changeset
|
60 |
06299199dfb9
Fix bad max depth value (fix sub16 to avoid trashing sub_b).
JeanDo
parents:
161
diff
changeset
|
61 comf sub_c+1 ; 16bit sign change. |
06299199dfb9
Fix bad max depth value (fix sub16 to avoid trashing sub_b).
JeanDo
parents:
161
diff
changeset
|
62 negf sub_c+0 |
06299199dfb9
Fix bad max depth value (fix sub16 to avoid trashing sub_b).
JeanDo
parents:
161
diff
changeset
|
63 btfsc STATUS,C ; Carry to propagate ? |
06299199dfb9
Fix bad max depth value (fix sub16 to avoid trashing sub_b).
JeanDo
parents:
161
diff
changeset
|
64 incf sub_c+1,F ; YES: do it. |
06299199dfb9
Fix bad max depth value (fix sub16 to avoid trashing sub_b).
JeanDo
parents:
161
diff
changeset
|
65 |
0 | 66 return |
67 | |
544 | 68 subU16: ; sub_c = sub_a - sub_b (with UNSIGNED values) |
426 | 69 bcf neg_flag |
70 movf sub_b+0, W ; Get Value to be subtracted | |
71 subwf sub_a+0, W ; Do the High Byte | |
72 movwf sub_c+0 | |
73 movf sub_b+1, W ; Get the Value to be Subbed | |
74 subwfb sub_a+1, W | |
75 movwf sub_c+1 | |
76 | |
77 btfsc STATUS,C ; Borrow to propagate ? (B == /CARRY) | |
78 return ; NO: result positive done. | |
79 | |
80 bsf neg_flag ; MARK result negative | |
81 | |
82 comf sub_c+1 ; 16bit sign change. | |
83 negf sub_c+0 | |
84 btfsc STATUS,C ; Carry to propagate ? | |
85 incf sub_c+1,F ; YES: do it. | |
86 | |
87 return | |
88 | |
476 | 89 ;============================================================================= |
90 | |
105 | 91 mult16x16: ;xA*xB=xC |
0 | 92 clrf xC+2 ; Clear the High-Order Bits |
93 clrf xC+3 | |
94 movf xA, w ; Do the "L" Multiplication first | |
95 mulwf xB | |
96 movf PRODL, w ; Save result | |
97 movwf xC | |
98 movf PRODH, w | |
99 movwf xC+1 | |
100 movf xA, w ; Do the "I" Multiplication | |
101 mulwf xB+1 | |
102 movf PRODL, w ; Save the Most Significant Byte First | |
103 addwf xC+1, f | |
104 movf PRODH, w | |
105 addwfc xC+2, f ; Add to the Last Result | |
106 movf xA+1, w ; Do the "O" Multiplication | |
107 mulwf xB | |
108 movf PRODL, w ; Add the Lower Byte Next | |
109 addwf xC+1, f | |
110 movf PRODH, w ; Add the High Byte First | |
111 addwfc xC+2, f | |
112 btfsc STATUS, C ; Add the Carry | |
113 incf xC+3, f | |
114 movf xA+1, w ; Do the "F" Multiplication | |
115 mulwf xB+1 | |
116 movf PRODL, w | |
117 addwf xC+2, f | |
118 movf PRODH, w | |
119 addwfc xC+3, f | |
120 return | |
121 | |
476 | 122 ;============================================================================= |
0 | 123 |
124 div16x16: ;xA/xB=xC with xA as remainder | |
125 ;uses divB as temp variable | |
126 clrf xC+0 | |
127 clrf xC+1 | |
128 MOVF xB+0,W ; Check for zero | |
129 IORWF xB+1,W ; | |
130 BTFSC STATUS,Z ; Check for zero | |
131 RETLW H'FF' ; return 0xFF if illegal | |
132 MOVLW 1 ; Start count at 1 | |
133 MOVWF divB ; Clear Count | |
134 div16x16_1 | |
135 BTFSC xB+1,7 ; High bit set ? | |
136 bra div16x16_2 ; Yes then continue | |
137 INCF divB,F ; Increment count | |
138 | |
139 bcf STATUS,C | |
140 rlcf xB+0,F | |
141 rlcf xB+1,F | |
142 bra div16x16_1 | |
143 div16x16_2: | |
144 ; Shift result left | |
145 bcf STATUS,C | |
146 rlcf xC+0,F | |
147 rlcf xC+1,F | |
148 | |
149 ; Reduce Divisor | |
150 | |
151 MOVF xB,W ; Get low byte of subtrahend | |
152 SUBWF xA,F ; Subtract DST(low) - SRC(low) | |
153 MOVF xB+1,W ; Now get high byte of subtrahend | |
154 BTFSS STATUS,C ; If there was a borrow, rather than | |
155 INCF xB+1,W ; decrement high byte of dst we inc src | |
156 SUBWF xA+1,F ; Subtract the high byte and we're done | |
157 | |
158 | |
159 BTFSC STATUS, C ; Did it reduce? | |
160 bra div16x16_3 ; No, so it was less than | |
161 | |
162 movf xB+0,W ; Reverse subtraction | |
163 addwf xA+0,F | |
164 movf xB+1,W | |
165 addwfc xA+1,F | |
166 | |
167 bra div16x16_4 ; Continue the process | |
168 div16x16_3: | |
169 BSF xC+0,0 ; Yes it did, this gets a 1 bit | |
170 div16x16_4: | |
171 DECF divB,F ; Decrement N_COUNT | |
172 BTFSC STATUS,Z ; If its not zero then continue | |
173 return | |
174 | |
175 bcf STATUS,C | |
176 rrcf xB+1,F | |
177 rrcf xB+0,F | |
178 | |
179 bra div16x16_2 ; Next bit. | |
180 | |
476 | 181 ;============================================================================= |
182 | |
0 | 183 div32x16: ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder |
184 ; Setup | |
185 movlw .32 ; setup shift counter | |
186 movwf divB | |
187 movf xC+3,W ; move ACCb to ACCf | |
188 movwf xA+1 | |
189 movf xC+2,W | |
190 movwf xA+0 | |
191 movf xC+1,W ; move ACCc to ACCe | |
192 movwf sub_a+1 | |
193 movf xC+0,W | |
194 movwf sub_a+0 | |
195 clrf xC+3 | |
196 clrf xC+2 | |
197 clrf xC+1 | |
198 clrf xC+0 | |
199 clrf sub_b+1 | |
200 clrf sub_b+0 | |
201 div32x16_2 | |
202 bcf STATUS,C | |
203 rlcf sub_a+0,F | |
204 rlcf sub_a+1,F | |
205 rlcf xA+0,F | |
206 rlcf xA+1,F | |
207 rlcf sub_b+0,F | |
208 rlcf sub_b+1,F | |
209 movf xB+1,W | |
210 subwf sub_b+1,W ; check if a>d | |
211 btfss STATUS,Z | |
476 | 212 bra div32x16_3 |
0 | 213 movf xB+0,W |
214 subwf sub_b+0,W ; if msb equal then check lsb | |
215 div32x16_3 | |
216 btfss STATUS,C ; carry set if d>a | |
476 | 217 bra div32x16_4 |
0 | 218 movf xB+0,W ; d-a into d |
219 subwf sub_b+0,F | |
220 btfss STATUS,C | |
221 decf sub_b+1,F | |
222 movf xB+1,W | |
223 subwf sub_b+1,F | |
224 bsf STATUS,C ; shift a 1 into b (result) | |
225 div32x16_4 | |
226 rlcf xC+0,F | |
227 rlcf xC+1,F | |
228 rlcf xC+2,F | |
229 rlcf xC+3,F | |
230 decfsz divB,F ; loop until all bits checked | |
476 | 231 bra div32x16_2 |
0 | 232 return |
233 | |
161
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
234 ;============================================================================= |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
235 ; u16 * u16 --> 32bit multiply (xA * xB --> xC) |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
236 ; Used in interupt service routines, to compute temperature and pressure. |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
237 ; |
0 | 238 isr_mult16x16: |
239 clrf isr_xC+2 ; Clear the High-Order Bits | |
240 clrf isr_xC+3 | |
241 movf isr_xA, w ; Do the "L" Multiplication first | |
242 mulwf isr_xB | |
243 movf PRODL, w ; Save result | |
161
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
244 movwf isr_xC+0 |
0 | 245 movf PRODH, w |
246 movwf isr_xC+1 | |
161
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
247 movf isr_xA+0, w ; Do the "I" Multiplication |
0 | 248 mulwf isr_xB+1 |
249 movf PRODL, w ; Save the Most Significant Byte First | |
250 addwf isr_xC+1, f | |
251 movf PRODH, w | |
252 addwfc isr_xC+2, f ; Add to the Last Result | |
253 movf isr_xA+1, w ; Do the "O" Multiplication | |
254 mulwf isr_xB | |
255 movf PRODL, w ; Add the Lower Byte Next | |
256 addwf isr_xC+1, f | |
257 movf PRODH, w ; Add the High Byte First | |
258 addwfc isr_xC+2, f | |
259 btfsc STATUS, C ; Add the Carry | |
260 incf isr_xC+3, f | |
261 movf isr_xA+1, w ; Do the "F" Multiplication | |
262 mulwf isr_xB+1 | |
263 movf PRODL, w | |
264 addwf isr_xC+2, f | |
265 movf PRODH, w | |
266 addwfc isr_xC+3, f | |
267 return | |
161
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
268 |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
269 ;============================================================================= |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
270 ; 24bit shift, repeted WREG times. |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
271 ; Because we shift less than 8bits, and keep only C[2:1], we don't care what |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
272 ; bit is inserted... |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
273 ; |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
274 isr_shift_C31: |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
275 rrcf isr_xC+3,F ; Shift the three bytes... |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
276 rrcf isr_xC+2,F |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
277 rrcf isr_xC+1,F |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
278 decfsz WREG |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
279 bra isr_shift_C31 |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
280 return |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
281 |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
282 ;============================================================================= |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
283 ; s16 * s16 --> 32bit multiply (xA * xB --> xC) |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
284 ; Signed multiplication. |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
285 ; Code from... the Pic18F documentation ;-) |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
286 isr_unsigned_mult16x16: |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
287 MOVF isr_xA+0, W ; Lowest is simply a[0] * b[0] |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
288 MULWF isr_xB+0 |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
289 MOVFF PRODL, isr_xC+0 |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
290 MOVFF PRODH, isr_xC+1 |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
291 ; |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
292 MOVF isr_xA+1, W ; And highest a[1] * b[1] |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
293 MULWF isr_xB+1 |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
294 MOVFF PRODL, isr_xC+2 |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
295 MOVFF PRODH, isr_xC+3 |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
296 ; |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
297 MOVF isr_xA+0, W ; Intermediates do propagate: |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
298 MULWF isr_xB+1 |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
299 MOVF PRODL, W |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
300 ADDWF isr_xC+1, F ; Add cross products |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
301 MOVF PRODH, W |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
302 ADDWFC isr_xC+2, F ; with propagated carry |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
303 CLRF WREG |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
304 ADDWFC isr_xC+3, F ; on the three bytes. |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
305 ; |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
306 MOVF isr_xA+1, W ; And the second one, similarly. |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
307 MULWF isr_xB+0 |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
308 MOVF PRODL, W |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
309 ADDWF isr_xC+1, F ; Add cross products |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
310 MOVF PRODH, W |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
311 ADDWFC isr_xC+2, F |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
312 CLRF WREG |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
313 ADDWFC isr_xC+3, F |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
314 return |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
315 |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
316 isr_signed_mult16x16: |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
317 rcall isr_unsigned_mult16x16 |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
318 |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
319 ; Manage sign extension of operand B |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
320 BTFSS isr_xB+1,7 ; Is B negatif ? |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
321 BRA isr_signed_mult_checkA ; No: check ARG1 |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
322 MOVF isr_xA+0, W ; Yes: add -65536 * A |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
323 SUBWF isr_xC+2, F |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
324 MOVF isr_xA+1, W |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
325 SUBWFB isr_xC+3, F |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
326 ; And of operand A |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
327 isr_signed_mult_checkA |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
328 BTFSS isr_xA+1, 7 ; Is A negatif ? |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
329 RETURN ; No: done |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
330 MOVF isr_xB+0, W |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
331 SUBWF isr_xC+2, F |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
332 MOVF isr_xB+1, W |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
333 SUBWFB isr_xC+3, F |
8d6aca08f66b
Use signed arithmetic for pressure/temperature compensation.
JeanDo
parents:
105
diff
changeset
|
334 RETURN |