Lpc2000

Hi!

I'm pretty new on this and I think i screwed it up really good directly

I made this code and tried it:

void writeToFlash()
{
	command[0] = 54; 
	iap(command,result,0x7FFFFFF0);
		
	command[0] = 55;
	iap(command,result,0x7FFFFFF0);

	//Prepare sector 
	command[0] = 50;		// Command
	command[1] = 8;			// Start sector
	command[2] = 8;			// Stop sector
	iap(command,result,0x7FFFFFF0);

	//Erase sector 
	command[0] = 52;		// Command
	command[1] = 8;			// Start sector
	command[2] = 8;			// Stop sector
	iap(command,result,0x7FFFFFF0);

}

Offcourse it didnt work because I forgot to set the CCLK in the erase
part. 
But this was not all, after this I cant access the CPU again. I get
this error message: "Memory Missmatch Adress: 0x00000000 Value = 0x00
Expected = 0x18". 
Have I screwed up the CPU totally or is there anything I can do to
make it work again?

Please can someone help me?

Thanks

hold the BL pin then try to connect using philips utility over the 
serial port. If you can't chip is useless.

Gus

--- In lpc2000@yahoogroups.com, "mobilsiten" <petertholander@h...> 
wrote:
> 
> Hi!
> 
> I'm pretty new on this and I think i screwed it up really good 
directly
> 
> I made this code and tried it:
> 
> void writeToFlash()
> {
> 	command[0] = 54; 
> 	iap(command,result,0x7FFFFFF0);
> 		
> 	command[0] = 55;
> 	iap(command,result,0x7FFFFFF0);
> 
> 	//Prepare sector 
> 	command[0] = 50;		// Command
> 	command[1] = 8;			// Start sector
> 	command[2] = 8;			// Stop sector
> 	iap(command,result,0x7FFFFFF0);
> 
> 	//Erase sector 
> 	command[0] = 52;		// Command
> 	command[1] = 8;			// Start sector
> 	command[2] = 8;			// Stop sector
> 	iap(command,result,0x7FFFFFF0);
> 
> }
> 
> Offcourse it didnt work because I forgot to set the CCLK in the 
erase
> part. 
> But this was not all, after this I cant access the CPU again. I get
> this error message: "Memory Missmatch Adress: 0x00000000 Value = 
0x00

> Expected = 0x18". 
> Have I screwed up the CPU totally or is there anything I can do to
> make it work again?
> 
> Please can someone help me?
> 
> Thanks

> void writeToFlash()
> {
> 	command[0] = 54; 
> 	iap(command,result,0x7FFFFFF0);
> 		
> 	command[0] = 55;
> 	iap(command,result,0x7FFFFFF0);


I'd really like to see how u defined your iap function pointer.

Regardless, ensure that the IAP function pointer switches to thumb 
mode and takes 'only' 2 arguments (Command & Result).  Note that 
function pointer must go to address 0x7ffffff1 (not 0x7ffffff0). 

Look closely at the "IAP Command" section in "Flash Memory System & 
Programming" in your User Manual.

Leighton

This is the iap function:
 
void iap (unsigned *cmd,unsigned *rslt,unsigned entry)
{
 asm("mov r15,r2");
}

Its taken from Keils "exercises"

Peter



--- In lpc2000@yahoogroups.com, "Leighton Rowe" <leightonsrowe@y...>
wrote:

> 
> > void writeToFlash()
> > {
> > 	command[0] = 54; 
> > 	iap(command,result,0x7FFFFFF0);
> > 		
> > 	command[0] = 55;
> > 	iap(command,result,0x7FFFFFF0);
> 
> 
> I'd really like to see how u defined your iap function pointer.
> 
> Regardless, ensure that the IAP function pointer switches to thumb 
> mode and takes 'only' 2 arguments (Command & Result).  Note that 
> function pointer must go to address 0x7ffffff1 (not 0x7ffffff0). 
> 
> Look closely at the "IAP Command" section in "Flash Memory System & 
> Programming" in your User Manual.
> 
> Leighton

Ok, thanks this solved the problem. Still I would like to know how
this could totally messup the CPU....

Can someone tell me??

Peter

--- In lpc2000@yahoogroups.com, "Gus" <gus_is_working@y...> wrote:

> 
> hold the BL pin then try to connect using philips utility over the 
> serial port. If you can't chip is useless.
> 
> Gus
> 
> --- In lpc2000@yahoogroups.com, "mobilsiten" <petertholander@h...> 
> wrote:
> > 
> > Hi!
> > 
> > I'm pretty new on this and I think i screwed it up really good 
> directly
> > 
> > I made this code and tried it:
> > 
> > void writeToFlash()
> > {
> > 	command[0] = 54; 
> > 	iap(command,result,0x7FFFFFF0);
> > 		
> > 	command[0] = 55;
> > 	iap(command,result,0x7FFFFFF0);
> > 
> > 	//Prepare sector 
> > 	command[0] = 50;		// Command
> > 	command[1] = 8;			// Start sector
> > 	command[2] = 8;			// Stop sector
> > 	iap(command,result,0x7FFFFFF0);
> > 
> > 	//Erase sector 
> > 	command[0] = 52;		// Command
> > 	command[1] = 8;			// Start sector
> > 	command[2] = 8;			// Stop sector
> > 	iap(command,result,0x7FFFFFF0);
> > 
> > }
> > 
> > Offcourse it didnt work because I forgot to set the CCLK in the 
> erase
> > part. 
> > But this was not all, after this I cant access the CPU again. I get
> > this error message: "Memory Missmatch Adress: 0x00000000 Value = 
> 0x00
> > Expected = 0x18". 
> > Have I screwed up the CPU totally or is there anything I can do to
> > make it work again?
> > 
> > Please can someone help me?
> > 
> > Thanks

> 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

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

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

Sorry, still dosent work I directly get the error code SRC_ADDR_NOT_MAPPED

I dont dissable the interrupts (because I have not manage to solve
this eighter...)
But I dont think there can be any interrupts because this is the only
code in the application,,,as long as the cpu dosent create any own
interrupts...

--- In lpc2000@yahoogroups.com, "Leighton Rowe" <leightonsrowe@y...>
wrote:

> 
> 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

> 	//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

It looks like everything but the write command is ok. Just for 
clarity, what you're using for the variable "source"?

--- In lpc2000@yahoogroups.com, "Leighton Rowe" <leightonsrowe@y...> 
wrote:
> 
> > 	//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
> 
> It looks like everything but the write command is ok. Just for 
> clarity, what you're using for the variable "source"?

source is a pointer to a char array with the data i want to write to 
the flash in this case the famous "Hello world" :-)

Ah, finally its solved. 
Thanks for all the help!

--- In lpc2000@yahoogroups.com, "mobilsiten" <petertholander@h...> wrote:

> 
> --- In lpc2000@yahoogroups.com, "Leighton Rowe" <leightonsrowe@y...> 
> wrote:
> > 
> > > 	//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
> > 
> > It looks like everything but the write command is ok. Just for 
> > clarity, what you're using for the variable "source"?
> 
> source is a pointer to a char array with the data i want to write to 
> the flash in this case the famous "Hello world" :-)

I´ve got the same problem.
If I want to erase the sector, an undef interrupt occurs, if I want to
write to a sector, A SRC_ADDR_ERROR occurs.

Could you tell me what did you do?
Thanks.


--- In lpc2000@yahoogroups.com, "mobilsiten" <petertholander@...> wrote:
>
> 
> 
> Ah, finally its solved. 
> Thanks for all the help!
> 
> --- In lpc2000@yahoogroups.com, "mobilsiten" <petertholander@h...>
wrote:

> > 
> > --- In lpc2000@yahoogroups.com, "Leighton Rowe" <leightonsrowe@y...> 
> > wrote:
> > > 
> > > > 	//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
> > > 
> > > It looks like everything but the write command is ok. Just for 
> > > clarity, what you're using for the variable "source"?
> > 
> > source is a pointer to a char array with the data i want to write to 
> > the flash in this case the famous "Hello world" :-)
>