📄 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 V8.02 HPI32 04/29/2007 12:48:53 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(readLength+ThisFile.OffsetofSector>DeviceInfo.BPB_BytesPerSec)
254 2 len=DeviceInfo.BPB_BytesPerSec;
255 2 else
256 2 len=readLength+ThisFile.OffsetofSector;
257 2
258 2 //////////////////////////////////////////////////////
259 2 if(ThisFile.OffsetofSector>0)
260 2 {
261 3 if(SdReadSector(ThisFile.SectorPointer,1,DBUF))
262 3 {
263 4
264 4 len=len-ThisFile.OffsetofSector;
265 4 for(i=0;i<len;i++)
266 4
267 4 *(pBuffer+i)=DBUF[ThisFile.OffsetofSector+i];
268 4 ThisFile.OffsetofSector=ThisFile.OffsetofSector+len;
269 4 }
270 3 else
271 3 return FALSE;
272 3 }
273 2 else
274 2 {
275 3 if(!SdReadSector(ThisFile.SectorPointer,1,pBuffer+tlen))
276 3 return FALSE;
277 3 ThisFile.OffsetofSector=len;
278 3 }
279 2 ////////////////////////////////////////////////////////////
280 2 readLength-=len;
281 2 tlen+=len;
282 2
283 2 /////////////////////////////////////////////////////////
284 2 if(ThisFile.OffsetofSector>DeviceInfo.BPB_BytesPerSec-1)
285 2 {
286 3 ThisFile.OffsetofSector-=DeviceInfo.BPB_BytesPerSec;
287 3 ThisFile.SectorofCluster+=1;
288 3 if(ThisFile.SectorofCluster>DeviceInfo.BPB_SecPerClus-1)
289 3 {
290 4 ThisFile.SectorofCluster=0;
291 4 ThisFile.ClusterPointer=GetNextClusterNum32(ThisFile.ClusterPointer);
292 4 if(ThisFile.ClusterPointer>DeviceInfo.TotCluster)
293 4 return FALSE;
294 4 ThisFile.SectorPointer=FirstSectorofCluster32(ThisFile.ClusterPointer);
295 4 }
296 3 else
297 3 ThisFile.SectorPointer=ThisFile.SectorPointer+1;
298 3 }
299 2 //////////////////////////////////////////////////////////////////
300 2 }//end while
301 1
302 1 ThisFile.bFileOpen=1;
303 1 ThisFile.pointer+=tlen;
C51 COMPILER V8.02 HPI32 04/29/2007 12:48:53 PAGE 6
304 1 //////////////////////////////////////////////
305 1 Response.len=blen;
306 1
307 1 return TRUE;
308 1 }
309
310 unsigned char SetFilePointer32(unsigned long pointer)
311 {
312 1 if(!bFlags.bits.SLAVE_IS_ATTACHED)
313 1 return FALSE;
314 1 if(!ThisFile.bFileOpen)
315 1 return FALSE;
316 1 ///////////////////////////////////////////////////////////
317 1 ThisFile.pointer=pointer;
318 1 if(ThisFile.pointer>ThisFile.LengthInByte)
319 1 return FALSE;
320 1
321 1 if(!GoToPointer32(ThisFile.pointer))
322 1 {
323 2 ThisFile.bFileOpen=0;
324 2 return FALSE;
325 2 }
326 1 //////////////////////////////////////////////
327 1 return TRUE;
328 1 }
329
330 unsigned char CreateFile32(unsigned long len,unsigned char *pBuffer,unsigned char *pName)
331 {
332 1 unsigned int sector,i,j,DirCount;
333 1 unsigned long cnum;
334 1 unsigned char xdata bstop,InByte,bwrite;
335 1 unsigned long ClusterPointer;
336 1
337 1 if(!bFlags.bits.SLAVE_IS_ATTACHED)
338 1 return FALSE;
339 1 if((len%32)!=0)
340 1 return FALSE;
341 1 if((len+32)>DeviceInfo.BPB_BytesPerSec)
342 1 return FALSE;
343 1
344 1 ThisFile.bFileOpen=0;
345 1
346 1 cnum=GetFreeCusterNum32();
347 1 if(cnum<0x02)
348 1 return FALSE;
349 1
350 1 pBuffer[21]=(unsigned char)(cnum>>24);
351 1 pBuffer[20]=(unsigned char)(cnum>>16);
352 1 pBuffer[27]=(unsigned char)(cnum>>8);
353 1 pBuffer[26]=(unsigned char)(cnum);
354 1
355 1 pBuffer[28]=0;pBuffer[29]=0;pBuffer[30]=0;pBuffer[31]=0;
356 1 bstop=0;
357 1
358 1 NowCluster32=DirStartCluster32;
359 1 do
360 1 {
361 2 NowSector=FirstSectorofCluster32(NowCluster32);
362 2 ClusterPointer=NowCluster32;
363 2 for(sector=0;sector<DeviceInfo.BPB_SecPerClus;sector++)
364 2 {
365 3 if(!SdReadSector(NowSector+sector,1,DBUF))
C51 COMPILER V8.02 HPI32 04/29/2007 12:48:53 PAGE 7
366 3 return FALSE;
367 3 DirCount=0;bwrite=0;
368 3
369 3 for(i=0;i<DeviceInfo.BPB_BytesPerSec;i=i+32)
370 3 {
371 4 if(len==0)
372 4 {
373 5 if((DBUF[i]==0x00)||(DBUF[i]==0xE5))
374 5 {
375 6 for(j=0;j<32;j++)
376 6 DBUF[i+j]=*(pBuffer+j);
377 6 if(!SdWriteSector(NowSector+sector,1,DBUF))
378 6 return FALSE;
379 6 bstop=1;
380 6 break;
381 6 }
382 5 }
383 4 else
384 4 {
385 5 if(DirCount==0)
386 5 InByte=i;
387 5 if(DBUF[i]==0xE5)
388 5 DirCount++;
389 5 else if(DBUF[i]==0x00)
390 5 {
391 6 DirCount++;
392 6 DBUF[i]=0xE5;
393 6 bwrite=1;
394 6 }
395 5 else
396 5 DirCount=0;
397 5
398 5 if((DirCount*32)>=(len+32))
399 5 {
400 6 for(j=0;j<len;j++)
401 6 DBUF[InByte+j]=*(pName+j);
402 6 for(j=0;j<32;j++)
403 6 DBUF[InByte+len+j]=*(pBuffer+j);
404 6 if(!SdWriteSector(NowSector+sector,1,DBUF))
405 6 return FALSE;
406 6 bstop=1;
407 6 break;
408 6 }
409 5 }
410 4 }
411 3 if(bstop==1)break;
412 3
413 3 if((len!=0)&&(bwrite==1))
414 3 {
415 4 if(!SdWriteSector(NowSector+sector,1,DBUF))
416 4 return FALSE;
417 4 }
418 3 }
419 2 if(bstop==1)break;
420 2
421 2 NowCluster32=GetNextClusterNum32(NowCluster32);
422 2 if(NowCluster32>DeviceInfo.TotCluster)
423 2 {
424 3 NowCluster32=CreateClusterLink32(ClusterPointer);
425 3 if(NowCluster32==0x00)
426 3 return FALSE;
427 3 NowSector=FirstSectorofCluster32(NowCluster32);
C51 COMPILER V8.02 HPI32 04/29/2007 12:48:53 PAGE 8
428 3 for(i=0;i<DeviceInfo.BPB_BytesPerSec;i++) DBUF[i]=0x00;
429 3 for(sector=0;sector<DeviceInfo.BPB_SecPerClus;sector++)
430 3 {
431 4 if(!SdWriteSector(NowSector+sector,1,DBUF))
432 4 return FALSE;
433 4 }
434 3 }
435 2 }while(NowCluster32<=DeviceInfo.TotCluster);
436 1 ////////////////////////////////////////////////////////////////
437 1
438 1 ThisFile.StartCluster=cnum;
439 1 ThisFile.LengthInByte=0;
440 1 ThisFile.ClusterPointer=ThisFile.StartCluster;
441 1 ThisFile.SectorPointer=FirstSectorofCluster32(ThisFile.StartCluster);
442 1 ThisFile.OffsetofSector=0;
443 1 ThisFile.SectorofCluster=0;
444 1 ThisFile.bFileOpen=1;
445 1 ThisFile.pointer=0;
446 1 ThisFile.FatSectorPointer=0;
447 1
448 1 return TRUE;
449 1 }
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