Lpc2000

Here is an extraction from my program:
/******************************************************************/
/* Program *data to flash_addr. number of bytes specified by size */
/* Return:  IAP error code (0 when OK)                            */
/******************************************************************/
UINT32 gIAPProgram (void *flash_addr, void *data, UINT32 size)
{
  struct iap_in  iap;                      // IAP input parameters
  UINT32 result[16];                       // IAP results

  WDMOD=0x00;                              // stop watchdog
  VICIntEnClr = 0xFFFFFFFF;                // disable all interrupts

  iap.cmd = FLASH_CMD_PREP_SEC;                            // IAP 
Command: Prepare Sectors for Write
  iap.par[0] = get_secnum (flash_addr);    // start sector
  iap.par[1] = iap.par[0];                 // end Sektor
  iap_entry (&iap, result);                // call IAP function
  if (result[0]==CMD_SUCCESS)              // an error occured?
     {
       iap.cmd = FLASH_CMD_CPY_RAM_TO_FLASH;                            
// IAP Command: Copy RAM to Flash
       iap.par[0] = (UINT32) flash_addr;  // destination-addr
       iap.par[1] = (UINT32) data;        // source-addr
       iap.par[2] = size;                       // number of bytes
       iap.par[3] = CCLK;                       // CPU clock
       iap_entry (&iap, result);                // call IAP function
     }

  gInit_Watchdog();
  VICIntEnable = gEnabledInterrupts;
  gCopySram32ToSram32BufferBinary(result,gIAP_Results,0x0000,16);
  return (result[0]);
}

UINT8 gIAP_DataBuffer[512];
//somewhere in IAP MainLoop
{
     ...

#ifdef DEBUG_INFO
CplPortPin(PORT0,Port0_06);
#endif
                  i=gIAPErase(FlashSector01_START, FlashSector14_END);// 
erasing time is ~100ms, independant if 1 or more sectors
#ifdef DEBUG_INFO
CplPortPin(PORT0,Port0_06);
#endif
     ...
#endif
#ifdef DEBUG_INFO
CplPortPin(PORT0,Port0_07);
#endif
                  i=gIAPProgram 
((FlashSector01_START+OffsetProgrammedData), gIAP_DataBuffer, sizeof 
(gIAP_DataBuffer));
#ifdef DEBUG_INFO
CplPortPin(PORT0,Port0_07);
#endif
     ...
}

Times are measured with scope on portpins
Ralf

sig5534 schrieb:

> > Erase sector 1-14: 100ms
> > Program 512 bytes starting from adress 0x2200: 250\ufffds
>
> Well I'm confused now.  I am seeing 400mS to erase one sector and prog
> 1K of flash.  Are you waiting to see if the prog is actually done?  I
> am doing that, and the IAP_BUSY status does not go down until 400mS.
>
> I can also verify that if the power goes down in 300mS the programming
> does not get completed.  The erase does, but not the prog.
>
> So my 1024 bytes to prog is certainly taking much longer than 500uS as
> you suggest.
>
> Any ideas?
>
> Thanks,  Chris.
>
>
>
>
>
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-- 

Mit freundlichen Gr\ufffd\ufffden / Best regards
Ralf Knorr
___________________________________________________________________________________________ 

* Author: *
Dipl.-Ing. Ralf Knorr (FH)
Development: Area leader Software
Bury GmbH & Co KG
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