Lpc2000

I forgot to mention that IAP commands may take a while to complete. 
From the below code example (IAR), I think you'll have to 
continually call the IAP and check the the status flag for 
completion.


//for (;;)
//{
//  iap_entry(cmd, status);
//    ret = status[0];
//    if (ret != STATUS_BUSY)
//    {
//      return ret; //or anything else that exits
//    }
//}








--- In lpc2000@yahoogroups.com, "mobilsiten" <petertholander@h...> 
wrote:
> 
> Now I have changed the code to this:
> 
> 	IAP iap_entry;
> 		
> 	iap_entry = (IAP) IAP_LOCATION; 
> 
> 	//Prepare sector 
> 	command[0] = 50;		// Command
> 	command[1] = 7;			// Start sector
> 	command[2] = 7;			// Stop sector
> 	iap_entry(command,result);
> /*
> 	//Erase sector 
> 	command[0] = 52;		// Command
> 	command[1] = 7;			// Start sector
> 	command[2] = 7;			// Stop sector
> 	command[3] = 60000;  	// System clock frekquency in (CCLK) 
KHz
> 	iap_entry(command,result);
> 
> 	//Prepare sector 
> 	command[0] = 50;		// Command
> 	command[1] = 7;			// Start sector
> 	command[2] = 7;			// Stop sector
> 	iap_entry(command,result);
> */
> 
> 	//Write
> 	command[0] = 51;			// Command
> 	command[1] = 0x0000E000; 	// Start adress
> 	command[2] = source;		// Data
> 	command[3] = 512;			// Size of data 512 
| 1024 | 4096 | 8192	  	
> 	command[4] = 60000;  		// System clock frekquency 
in (CCLK) KHz
> 	iap_entry(command,result);
> 
> 
> But it still dosent work. If i try to erase it seems like I mess ut
> the interrupt vector and if I try "copy to ram" I get 
SRC_ADDR_NOT_MAPPED.
>  
> 
> --- In lpc2000@yahoogroups.com, "Leighton Rowe" 
<leightonsrowe@y...>
> wrote:
> > 
> > > This is the iap function:
> > >  
> > > void iap (unsigned *cmd,unsigned *rslt,unsigned entry)
> > > {
> > >  asm("mov r15,r2");
> > > }
> > 
> > You're overwriting the PC (program counter) which is one of the 
> > scariest things u can do. Usually this results in prefetch 
aborts. 
> > You can to branch to the IAP bootloader address location by 
using a 
> > function pointer.
> > 
> > 
> > The code below is some example code taken from the User Manual 
for 
> > the lpc you are using.
> > 
> > #define IAP_LOCATION 0x7ffffff1    //address of IAP BL
> > 
> > unsigned long command[5];
> > unsigned long result[2];
> > 
> > typedef void (*IAP)(unsigned int [],unsigned int[]); //function 
ptr
> > 
> > IAP iap_entry;   
> > iap_entry=(IAP) IAP_LOCATION;  // function pointer declared and 
set 
> > to address location
> > 
> > iap_entry (command, result);   //done