?? twowire.lst
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299 1 if (Send_Byte(cDevAddr | 0x01)) // Read address
300 1 return 0;
301 1 cResult = Read_Byte(1);
302 1
C51 COMPILER V7.06 TWOWIRE 12/28/2004 10:14:02 PAGE 6
303 1 StopCondition();
304 1 return cResult;
305 1 }
306
307
308 uCHAR I2CWriteByte(uCHAR cDevAddr, uCHAR cReg, uCHAR cData)
309 {
310 1
311 1
312 1 /* start condition */
313 1 StartCondition();
314 1 cDevAddr &= 0xFE; // Force WRITE address
315 1 /* send device ID and write data */
316 1 if(!Send_Byte(cDevAddr))
317 1 {
318 2 if(!Send_Byte(cReg))
319 2 {
320 3 if(!Send_Byte(cData))
321 3 {
322 4 StopCondition();
323 4 return(0); /* success */
324 4 }
325 3 }
326 2 }
327 1 StopCondition();
328 1 return(1);
329 1 }
330 //--------------------------------------------------
331 // 041901, Added for TWD Burst Write
332 // 1. PT8655X_Wr_Burst_A (Start + Slave_ID + Address)
333 // 2. PT8655X_Wr_Burst_D (Data)
334 // 3. PT8655X_Wr_Burst_P (stop)
335 //--------------------------------------------------
336 uCHAR twdWr_Burst_A(uCHAR cReg)
337 {
338 1 StartCondition();
339 1 if(!Send_Byte(TW101))
340 1 {
341 2 if(!Send_Byte(cReg))
342 2 {
343 3 return(0); //
344 3 }
345 2 }
346 1 return(1); //
347 1 }
348
349 #ifdef TW100K
void twdWr_Burst_D(uCHAR cData)
{
uCHAR ix;
for(ix = 0; ix < 8; ix++)
{
Set_SCL_Low;
if(cData&0x80)Set_SDA_High;
else Set_SDA_Low;
cData<<=1;
Set_SCL_High;
}
Set_SCL_Low;
Set_SDA_High; /* release data line for acknowledge */
Set_SCL_High; /* Send a clock for Acknowledge */
C51 COMPILER V7.06 TWOWIRE 12/28/2004 10:14:02 PAGE 7
// if(SDA_High) cAcknowledge = 1; /* No Acknowledge */
Set_SCL_Low; /* Finish Acknoledge */
// return(cAcknowledge);
}
#else
373 void twdWr_Burst_D(uCHAR cData)
374 {
375 1 uCHAR ix;
376 1 //uCHAR cAcknowledge;
377 1 // uCHAR cTWtrytime=0;
378 1 // cAcknowledge = 0;
379 1
380 1 for(ix = 0; ix < 8; ix++)
381 1 {
382 2 Set_SCL2Low;
383 2 if(cData&0x80)Set_SDA2High;
384 2 else Set_SDA2Low;
385 2 cData<<=1;
386 2 Set_SCL2High;
387 2 }
388 1 Set_SCL2Low;
389 1 Set_SDA2High; /* release data line for acknowledge */
390 1 Set_SCL2High; /* Send a clock for Acknowledge */
391 1 // if(SDA_High) cAcknowledge = 1; /* No Acknowledge */
392 1 Set_SCL2Low; /* Finish Acknoledge */
393 1
394 1 // return(cAcknowledge);
395 1
396 1 }
397 #endif
398
399 void twdWr_Burst_P(void)
400 {
401 1 StopCondition();
402 1 }
403
404 //twdWriteTable() is used for burst write for
405 //any I2C standar device
406 #if VIDEO_AVAILABLE
407 #ifdef VIDEO_SAA7114
#define EOT -1
BOOL twdWriteTable(uCHAR cDevAddr, char *pString)
{
uCHAR cReg=0;
uCHAR cNum=0;
while(*pString != EOT)
{
cReg = *pString++;
cNum = *pString++;
if(!I2CWriteBytes(cDevAddr, cReg, cNum, pString))
break;
else
pString += cNum;
}
}
#endif
424 #endif
425 //--------------------------------------------------
426 // Write Multiple Bytes to Device
C51 COMPILER V7.06 TWOWIRE 12/28/2004 10:14:02 PAGE 8
427 //--------------------------------------------------
428
429
430 #if 0
BOOL I2CWriteBytes(uCHAR cDevAddr, uCHAR cReg, uCHAR cNum, char *cData)
{
/* start condition */
StartCondition();
/* send device ID and write data */
if(!Send_Byte(cDevAddr))
{
if(!Send_Byte(cReg))
{
while(cNum--)
{
if(Send_Byte(*cData++)) //If false: release line and return
{
StopCondition();
return(0); /* unsuccess */
}
}
StopCondition();
return(1);
}
}
StopCondition();
return(0); /* fail */
}
#endif
457 //--------------------------------------------------
458 // Read Multiple Bytes to Device
459 //--------------------------------------------------
460 BOOL I2CReadBytes(uCHAR cDevAddr, uCHAR cReg, uCHAR *pString, uCHAR cNum)
461 {
462 1 /* write reg offset */
463 1 StartCondition();
464 1 if(Send_Byte(cDevAddr))
465 1 return 0; // Write address
466 1 if(Send_Byte(cReg))
467 1 return 0;
468 1
469 1 /* read data */
470 1 StartCondition();
471 1 if (Send_Byte(cDevAddr | 0x01)) // Read address
472 1 return 0;
473 1 while(cNum)
474 1 {
475 2 *pString++ = Read_Byte(cNum);
476 2 cNum--;
477 2 }
478 1
479 1 StopCondition();
480 1 return 1;
481 1 }
482
483
484 void twdDelay(uWORD wLoops)
485 {
486 1 uWORD wTemp;
487 1
488 1 while (wLoops--) {
C51 COMPILER V7.06 TWOWIRE 12/28/2004 10:14:02 PAGE 9
489 2 wTemp = 1000/6; // one loop below takes about 11 us
490 2 while (wTemp--);
491 2 }
492 1 }
493
494
495 // OSD config register Write
496 void OSDCfgWr(uCHAR index,uCHAR dat)
497 {
498 1 I2CWriteByte(TW101,OSD_CFG_INDEX,index);
499 1 I2CWriteByte(TW101,OSD_CFG_DATA,dat);
500 1 }
501
502 #ifdef TV
503 uCHAR TunerReadByte(uCHAR cDevAddr) //uCHAR cReg)
504 {
505 1 uCHAR cResult = 0;
506 1
507 1 #ifdef TWO_TW_BUS
gbTwBusSel=0;
#endif
510 1 /* read data */
511 1 StartCondition();
512 1 if (Send_Byte(cDevAddr | 0x01)) // Read address
513 1 return 0;
514 1 cResult = Read_Byte(1);
515 1
516 1 StopCondition();
517 1 return cResult;
518 1 }
519 //--------------------------------------------------
520 // Write Byte to Device
521 //--------------------------------------------------
522
523 #ifdef PAL
#define STEPCODE 0xC8 //Step:50KHz
#endif
526 #ifdef NTSC
527 #define STEPCODE 0xCE //Step:62.5KHz
528 #endif
529
530 uCHAR TunerWriteByte1(uCHAR cDevAddr, uCHAR cDecH, uCHAR cDecL,uCHAR bData, uCHAR cData)
531 {
532 1 cDevAddr &= 0xFE; // Force WRITE address
533 1
534 1 // start condition
535 1 StartCondition();
536 1
537 1 // send device ID and write data
538 1 if(!Send_Byte(cDevAddr))
539 1 {
540 2 if(!Send_Byte(cDecH))
541 2 {
542 3 if(!Send_Byte(cDecL))
543 3 {
544 4 if(!Send_Byte(bData))
545 4 {
546 5 if(!Send_Byte(cData))
547 5 {
548 6 StopCondition();
549 6 return(0); // success
550 6 }
C51 COMPILER V7.06 TWOWIRE 12/28/2004 10:14:02 PAGE 10
551 5 }
552 4 }
553 3 }
554 2 }
555 1 StopCondition();
556 1 return(1); // fail
557 1 }
558
559 uCHAR TunerWriteByte(uCHAR cDevAddr, uCHAR cDecH, uCHAR cDecL, uCHAR cData)
560 {
561 1 cDevAddr &= 0xFE; // Force WRITE address
562 1
563 1 // start condition
564 1 StartCondition();
565 1
566 1 // send device ID and write data
567 1 if(!Send_Byte(cDevAddr))
568 1 {
569 2 if(!Send_Byte(cDecH))
570 2 {
571 3 if(!Send_Byte(cDecL))
572 3 {
573 4 if(!Send_Byte(STEPCODE))
574 4 {
575 5 if(!Send_Byte(cData))
576 5 {
577 6 StopCondition();
578 6 return(0); // success
579 6 }
580 5 }
581 4 }
582 3 }
583 2 }
584 1 StopCondition();
585 1 return(1); // fail
586 1 }
587 #endif
588
589
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 762 ----
CONSTANT SIZE = ---- ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = ---- 18
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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