📄 hpi32.lst
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222 1 ThisFile.FatSectorPointer=0;
223 1 ThisFile.pointer=0;
224 1
225 1 Response.len=32;
226 1 return TRUE;
227 1 }
228
229
230 unsigned char ReadFile32(unsigned long readLength,unsigned char *pBuffer)
231 {
232 1
233 1 unsigned int len,i;
234 1 unsigned int tlen;
235 1 unsigned long blen;
236 1
237 1 if(!bFlags.bits.SLAVE_IS_ATTACHED)
238 1 return FALSE;
239 1 if(!ThisFile.bFileOpen)
240 1 return FALSE;
241 1
C51 COMPILER V7.00 HPI32 01/15/2008 09:38:32 PAGE 5
242 1 blen=readLength;
243 1 tlen=0;
244 1 if(readLength>MAX_READ_LENGTH)
245 1 return FALSE;
246 1
247 1 if(readLength+ThisFile.pointer>ThisFile.LengthInByte)
248 1 return FALSE;
249 1
250 1 ////////////////////////////////////////////
251 1 while(readLength>0)
252 1 {
253 2 if(ThisFile.SectorofCluster>=DeviceInfo.BPB_SecPerClus)
254 2 {
255 3 ThisFile.SectorofCluster=0;
256 3 ThisFile.ClusterPointer=GetNextClusterNum32(ThisFile.ClusterPointer);
257 3 if(ThisFile.ClusterPointer>DeviceInfo.TotCluster)
258 3 return FALSE;
259 3 ThisFile.SectorPointer=FirstSectorofCluster32(ThisFile.ClusterPointer);
260 3 }
261 2
262 2 if(readLength+ThisFile.OffsetofSector>DeviceInfo.BPB_BytesPerSec)
263 2 len=DeviceInfo.BPB_BytesPerSec;
264 2 else
265 2 len=readLength+ThisFile.OffsetofSector;
266 2
267 2 //////////////////////////////////////////////////////
268 2 if(ThisFile.OffsetofSector>0)
269 2 {
270 3 if(SdReadSector(ThisFile.SectorPointer,1,DBUF))
271 3 {
272 4
273 4 len=len-ThisFile.OffsetofSector;
274 4 for(i=0;i<len;i++)
275 4
276 4 *(pBuffer+i)=DBUF[ThisFile.OffsetofSector+i];
277 4 ThisFile.OffsetofSector=ThisFile.OffsetofSector+len;
278 4 }
279 3 else
280 3 return FALSE;
281 3 }
282 2 else
283 2 {
284 3 if(!SdReadSector(ThisFile.SectorPointer,1,pBuffer+tlen))
285 3 return FALSE;
286 3 ThisFile.OffsetofSector=len;
287 3 }
288 2 ////////////////////////////////////////////////////////////
289 2 readLength-=len;
290 2 tlen+=len;
291 2
292 2 /////////////////////////////////////////////////////////
293 2 if(ThisFile.OffsetofSector>=DeviceInfo.BPB_BytesPerSec)
294 2 {
295 3 ThisFile.OffsetofSector-=DeviceInfo.BPB_BytesPerSec;
296 3 ThisFile.SectorofCluster+=1;
297 3
298 3 ThisFile.SectorPointer+=1;
299 3 }
300 2 //////////////////////////////////////////////////////////////////
301 2 }//end while
302 1
303 1 ThisFile.bFileOpen=1;
C51 COMPILER V7.00 HPI32 01/15/2008 09:38:32 PAGE 6
304 1 ThisFile.pointer+=tlen;
305 1 //////////////////////////////////////////////
306 1 Response.len=blen;
307 1
308 1 return TRUE;
309 1 }
310
311 unsigned char SetFilePointer32(unsigned long pointer)
312 {
313 1 if(!bFlags.bits.SLAVE_IS_ATTACHED)
314 1 return FALSE;
315 1 if(!ThisFile.bFileOpen)
316 1 return FALSE;
317 1 ///////////////////////////////////////////////////////////
318 1 ThisFile.pointer=pointer;
319 1 if(ThisFile.pointer>ThisFile.LengthInByte)
320 1 return FALSE;
321 1
322 1 if(!GoToPointer32(ThisFile.pointer))
323 1 {
324 2 ThisFile.bFileOpen=0;
325 2 return FALSE;
326 2 }
327 1 //////////////////////////////////////////////
328 1 return TRUE;
329 1 }
330
331 unsigned char CreateFile32(unsigned long len,unsigned char *pBuffer,unsigned char *pName)
332 {
333 1 unsigned int sector,i,j,DirCount;
334 1 unsigned long cnum;
335 1 unsigned char xdata bstop,InByte,bwrite;
336 1 unsigned long ClusterPointer;
337 1
338 1 if(!bFlags.bits.SLAVE_IS_ATTACHED)
339 1 return FALSE;
340 1 if((len%32)!=0)
341 1 return FALSE;
342 1 if((len+32)>DeviceInfo.BPB_BytesPerSec)
343 1 return FALSE;
344 1
345 1 ThisFile.bFileOpen=0;
346 1
347 1 cnum=GetFreeCusterNum32();
348 1 if(cnum<0x02)
349 1 return FALSE;
350 1
351 1 pBuffer[21]=(unsigned char)(cnum>>24);
352 1 pBuffer[20]=(unsigned char)(cnum>>16);
353 1 pBuffer[27]=(unsigned char)(cnum>>8);
354 1 pBuffer[26]=(unsigned char)(cnum);
355 1
356 1 pBuffer[28]=0;pBuffer[29]=0;pBuffer[30]=0;pBuffer[31]=0;
357 1 bstop=0;
358 1
359 1 NowCluster32=DirStartCluster32;
360 1 do
361 1 {
362 2 NowSector=FirstSectorofCluster32(NowCluster32);
363 2 ClusterPointer=NowCluster32;
364 2 for(sector=0;sector<DeviceInfo.BPB_SecPerClus;sector++)
365 2 {
C51 COMPILER V7.00 HPI32 01/15/2008 09:38:32 PAGE 7
366 3 if(!SdReadSector(NowSector+sector,1,DBUF))
367 3 return FALSE;
368 3 DirCount=0;bwrite=0;
369 3
370 3 for(i=0;i<DeviceInfo.BPB_BytesPerSec;i=i+32)
371 3 {
372 4 if(len==0)
373 4 {
374 5 if((DBUF[i]==0x00)||(DBUF[i]==0xE5))
375 5 {
376 6 for(j=0;j<32;j++)
377 6 DBUF[i+j]=*(pBuffer+j);
378 6 if(!SdWriteSector(NowSector+sector,1,DBUF))
379 6 return FALSE;
380 6 bstop=1;
381 6 break;
382 6 }
383 5 }
384 4 else
385 4 {
386 5 if(DirCount==0)
387 5 InByte=i;
388 5 if(DBUF[i]==0xE5)
389 5 DirCount++;
390 5 else if(DBUF[i]==0x00)
391 5 {
392 6 DirCount++;
393 6 DBUF[i]=0xE5;
394 6 bwrite=1;
395 6 }
396 5 else
397 5 DirCount=0;
398 5
399 5 if((DirCount*32)>=(len+32))
400 5 {
401 6 for(j=0;j<len;j++)
402 6 DBUF[InByte+j]=*(pName+j);
403 6 for(j=0;j<32;j++)
404 6 DBUF[InByte+len+j]=*(pBuffer+j);
405 6 if(!SdWriteSector(NowSector+sector,1,DBUF))
406 6 return FALSE;
407 6 bstop=1;
408 6 break;
409 6 }
410 5 }
411 4 }
412 3 if(bstop==1)break;
413 3
414 3 if((len!=0)&&(bwrite==1))
415 3 {
416 4 if(!SdWriteSector(NowSector+sector,1,DBUF))
417 4 return FALSE;
418 4 }
419 3 }
420 2 if(bstop==1)break;
421 2
422 2 NowCluster32=GetNextClusterNum32(NowCluster32);
423 2 if(NowCluster32>DeviceInfo.TotCluster)
424 2 {
425 3 NowCluster32=CreateClusterLink32(ClusterPointer);
426 3 if(NowCluster32==0x00)
427 3 return FALSE;
C51 COMPILER V7.00 HPI32 01/15/2008 09:38:32 PAGE 8
428 3 NowSector=FirstSectorofCluster32(NowCluster32);
429 3 for(i=0;i<DeviceInfo.BPB_BytesPerSec;i++) DBUF[i]=0x00;
430 3 for(sector=0;sector<DeviceInfo.BPB_SecPerClus;sector++)
431 3 {
432 4 if(!SdWriteSector(NowSector+sector,1,DBUF))
433 4 return FALSE;
434 4 }
435 3 }
436 2 }while(NowCluster32<=DeviceInfo.TotCluster);
437 1 ////////////////////////////////////////////////////////////////
438 1
439 1 ThisFile.StartCluster=cnum;
440 1 ThisFile.LengthInByte=0;
441 1 ThisFile.ClusterPointer=ThisFile.StartCluster;
442 1 ThisFile.SectorPointer=FirstSectorofCluster32(ThisFile.StartCluster);
443 1 ThisFile.OffsetofSector=0;
444 1 ThisFile.SectorofCluster=0;
445 1 ThisFile.bFileOpen=1;
446 1 ThisFile.pointer=0;
447 1 ThisFile.FatSectorPointer=0;
448 1
449 1 return TRUE;
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