📄 dps2spc3.lst
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215 2
216 2 for(i = step; i < count; i++)
217 2 {
218 3 if(aux_len[0] < lensx[i])
219 3 {
220 4 aux_len[0] = lensx[i];
221 4 }
222 3 }
223 2 aux_len[0] = aux_len[0]*(count - step + 1);
224 2 /* determine total len for AUX-buffer 2;关于AUX-buf见PDF29*/
225 2 aux_len[1] = 0;
226 2
227 2 for(i = 0; i < step; i++)
228 2 {
229 3 if(aux_len[1] < lensx[i])
230 3 {
231 4 aux_len[1] = lensx[i];
232 4 }
233 3 }
234 2 aux_len[1] = aux_len[1] * (step + 1);
235 2
236 2 if((aux_len[0] + aux_len[1]) < min_len)
237 2 {
238 3 /* neue Minimal-Laenge gefunden */
239 3 min_len = aux_len[0] + aux_len[1];
240 3 min_step = step;
C51 COMPILER V7.02b DPS2SPC3 11/01/2004 20:51:04 PAGE 5
241 3 }
242 2 }
243 1
244 1 /*calculation of len for AUX-buffer 1;计算AUX-buffer 1长度 *
245 1 aux_len[0] = 0;
246 1
247 1 for(i = min_step; i < count; i++)
248 1 {
249 1 if(aux_len[0] < lensx[i])
250 1 {
251 1 aux_len[0] = lensx[i];
252 1 }
253 1 }
254 1 /* setup lens for AUX-buffer 1 */
255 1 for(i = min_step; i < count; i++)
256 1 {
257 2 lens[pos[i]] = aux_len[0];
258 2 }
259 1 /* calculation of len for AUX-buffer 2;计算AUX-buffer 2长度*/
260 1 aux_len[1] = 0;
261 1
262 1 for(i = 0; i < min_step; i++)
263 1 {
264 2 if(aux_len[1] < lensx[i])
265 2 {
266 3 aux_len[1] = lensx[i];
267 3 }
268 2 }
269 1 /* setup lens for AUX-buffer 2 */
270 1 /* setup assignment-list */
271 1 *assign = 0; /* $initial all buffers assigned to AUX-buffer 1 */
272 1
273 1 for(i = 0; i < min_step; i++)
274 1 {
275 2 lens[pos[i]] = aux_len[1];
276 2 *assign |= 0x01 << pos[i];/*左移pos[i];即与AUX-buffer 2相关的标上1*/
277 2 }
278 1 return min_len;/*返回总长度值*/
279 1 }
280 /* Ende assign_aux_buf */
281
282 #ifdef _C166
#pragma global
#endif
285
286 /*~
287 dps2_calculate_inp_outp_len()
288 主调user_dps_reset 见.U*/
289 /*
290 +------------------------------------------------------------------------+
291 | Funktion: d p s 2 _ c a l c u l a t e _ i n p _ o u t p _ l e n $ |
292 +------------------------------------------------------------------------+
293 | Description: |
294 | This function calculates the Input/Outputdata-lens based on the |
295 | specified config-data and returns a pointer to the calculated lens. |
296 |(original from DPS).根据特定组态数据计算I/O数据长度,并返回算出的长度指针|
297 +------------------------------------------------------------------------+
298 | parameters: |
299 | -cfg_ptr: pointer to config-data 组态数据指针 |
300 | -cfg_len: config-data len 组态数据长度 |
301 | |
302 | return value: |
C51 COMPILER V7.02b DPS2SPC3 11/01/2004 20:51:04 PAGE 6
303 | -pointer to lens |
304 +------------------------------------------------------------------------+
305 */
306 DPS2_IO_DATA_LEN SPC3_DATA_ATTR *dps2_calculate_inp_outp_len (UBYTE
307 SPC3_PTR_ATTR* cfg_ptr, UWORD cfg_len)/* 返回值类型.Hp5 */
308 {
309 1 UBYTE temp_inp_data_len;
310 1 UBYTE temp_outp_data_len;
311 1 UBYTE length;
312 1 UBYTE count;
313 1 UBYTE specific_data_length;
314 1 UBYTE result_ok;
315 1
316 1 result_ok = TRUE;
317 1 temp_inp_data_len = 0;
318 1 temp_outp_data_len = 0;
319 1
320 1 count=1 ; /* $ 添加 */
321 1 if ((cfg_len > 0) && (cfg_len <= dps2_binit.cfg_buf_len))
322 1 {
323 2 for ( ; (cfg_len > 0) && result_ok; cfg_len -= count)
324 2 {
325 3 count = 0;
326 3
327 3 if (*cfg_ptr & DPS_CFG_IS_BYTE_FORMAT)/* DPS_CFG_IS_BYTE_FORMAT即30H */
328 3 {
329 4 count++;
330 4
331 4 /* cfg_ptr points to ID-byte, CFG_BF means "CFG_IS_BYTE_FORMAT" */
332 4 length = (UBYTE)((*cfg_ptr & DPS_CFG_BF_LENGTH) + 1);/* DPS_…即0FH */
333 4
334 4 if (*cfg_ptr & DPS_CFG_LENGTH_IS_WORD_FORMAT)/*DPS_CFG…为40H*/
335 4 {
336 5 length *= 2;
337 5 }
338 4 if (*cfg_ptr & DPS_CFG_BF_OUTP_EXIST) /* DPS_CFG_BF_OUTP_EXIST为20H */
339 4 {
340 5 temp_outp_data_len = temp_outp_data_len + length;
341 5 }
342 4 if (*cfg_ptr & DPS_CFG_BF_INP_EXIST) /* DPS_CFG_BF_INP_EXIST为10H */
343 4 {
344 5 temp_inp_data_len = temp_inp_data_len + length;
345 5 }
346 4 cfg_ptr++;
347 4 }
348 3 else
349 3 {
350 4 /* cfg_ptr points to the headerbyte of special ID-format */
351 4 /* CFG_SF means "CFG_IS_SPECIAL_FORMAT" 特殊参数模式*/
352 4 if (*cfg_ptr & DPS_CFG_SF_OUTP_EXIST) /* DPS_CFG_SF_OUTP_EXIST为80H */
353 4 {
354 5 count++; /* next byte contains the length of outp_data */
355 5
356 5 length = (UBYTE)((*(cfg_ptr + count) & DPS_CFG_SF_LENGTH) +1);
357 5 /* DPS_CFG_SF_LENGTH为3fH */
358 5
359 5 if (*(cfg_ptr + count) & DPS_CFG_LENGTH_IS_WORD_FORMAT)
360 5 { /* DPS_CFG_LENGTH_IS_WORD_FORMAT为40H */
361 6 temp_outp_data_len = temp_outp_data_len + (UBYTE)(2*length);
362 6 }
363 5 else
364 5 {
C51 COMPILER V7.02b DPS2SPC3 11/01/2004 20:51:04 PAGE 7
365 6 temp_outp_data_len = temp_outp_data_len + length;
366 6 }
367 5 }
368 4 if (*cfg_ptr & DPS_CFG_SF_INP_EXIST) /*DPS_CFG_SF_INP_EXIST为40H*/
369 4 {
370 5 count++; /* next byte contains the length of inp_data */
371 5
372 5 length = (UBYTE)((*(cfg_ptr + count) & DPS_CFG_SF_LENGTH) +1); /* DPS_CFG_SF_LENGTH为3fH
- */
373 5
374 5 if (*(cfg_ptr + count) & DPS_CFG_LENGTH_IS_WORD_FORMAT)
375 5 { /* DPS_CFG_LENGTH_IS_WORD_FORMAT为40H */
376 6 temp_inp_data_len = temp_inp_data_len + (UBYTE)(2*length);
377 6 }
378 5 else
379 5 {
380 6 temp_inp_data_len = temp_inp_data_len + length;
381 6 }
382 5 }
383 4 specific_data_length = (UBYTE)(*cfg_ptr & DPS_CFG_BF_LENGTH);
384 4 /* DPS_CFG_BF_LENGTH为0fH */
385 4 if (specific_data_length != 15)
386 4 {
387 5 count = (UBYTE)(count + 1 + specific_data_length);
388 5 cfg_ptr = cfg_ptr + count;
389 5 }
390 4 else
391 4 {
392 5 result_ok = FALSE;
393 5 }
394 4 }
395 3 }
396 2
397 2 if ( (cfg_len != 0) ||
398 2 (
399 2 (((UWORD)temp_inp_data_len + 7) & 0xfff8 +
400 2 ((UWORD)temp_outp_data_len + 7) & 0xfff8)
401 2 > dps2_binit.din_dout_buf_len) )
402 2 {
403 3 result_ok = FALSE;
404 3 }
405 2 }
406 1 else
407 1 {
408 2 result_ok = FALSE;
409 2 }
410 1 if (result_ok)
411 1 {
412 2 io_data_len.inp_data_len = temp_inp_data_len;
413 2 io_data_len.outp_data_len = temp_outp_data_len;
414 2 return (&io_data_len);
415 2 }
416 1 else
417 1 {
418 2 return ((DPS2_IO_DATA_LEN *) 0);
419 2 }
420 1 }
421
422
423 /*~
424 dps2_buf_init() 主调.Hp8 图Z3
425 ~*/
C51 COMPILER V7.02b DPS2SPC3 11/01/2004 20:51:04 PAGE 8
426 /*
427 +------------------------------------------------------------------------+
428 | Function: d p s 2 _ b u f _ i n i t ( ) |
429 +------------------------------------------------------------------------+
430 | Description: |
431 | The specified lens are checked. If they are ok, the neccesarry |
432 | memory is calculated. If there is enough memory, the buffers are |
433 | armed.(检查设定参数,计算所需存储空间;如空间足够,存储buf定位设置完成) |
434 | In dps2_buf_len the amount of used Memory is stored. |
435 | （dps2_buf_len储存使用的总空间, ） |
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