Lpc2000

I have a EVBA7 with a 144 pin adapter with a LPC2214 chip. The 
adapter has 1MB of RAM which I think starts at 0x80000000. I also 
belived it is hardware straped to startup in 32bit data bus mode.

I can't seem to write anything into this memory. Even if I use the 
JTAG and IAR debugger to set any memory location above 0x8000000 it 
stays set to zero which makes it appear to not be working at all or 
incorrectly addressed.

Anyone have any ideas?

Thanks
Rick

Rick,

The 144 Pin Adapter has 1 Mbyte of RAM which is organized as 256K x 
32 ( Two 16 bit RAM chips). The start address of the external RAM is 
0x81000000 ( Bank 1, EMC )

The following registers must be initialized to enable the 
read/write/execute access.

   /* Connect A2 - A19, WE and CS1 */
   *pinsel2 = 0xC6009E4;
   /* Initialize Bank1 config in EMC, 32 bit with minimum waits */
   *bcfg1 = 0x20000400;

V18A(143), V3A(14),VSSA(139) and VSSA_PLL(138) power supply pins are 
not connected on the adapter. These pins needs to be connected if you 
are using the PLL and ADC.

Philips Apps

--- In lpc2000@yahoogroups.com, "helicopterproject2003" 
<helicopterproject2003@y...> wrote:

> I have a EVBA7 with a 144 pin adapter with a LPC2214 chip. The 
> adapter has 1MB of RAM which I think starts at 0x80000000. I also 
> belived it is hardware straped to startup in 32bit data bus mode.
> 
> I can't seem to write anything into this memory. Even if I use the 
> JTAG and IAR debugger to set any memory location above 0x8000000 it 
> stays set to zero which makes it appear to not be working at all or 
> incorrectly addressed.
> 
> Anyone have any ideas?
> 
> Thanks
> Rick

I guess this means there is no way to use the ext RAM to load 
program code for debugging purposes as you would the on-board RAM 
because it is not available at reset.

My program has grown larger than the onboard 16K of memory. I was 
hoping to use the ext RAM for testing and debugging by loading the 
program code into this RAM by the JTAG. This would allow for many 
more breakpoints than loading the program into flash.

Am I understanding your answer correctly that this is not possible?

Rick

--- In lpc2000@yahoogroups.com, "philips_apps" <philips_apps@y...> 
wrote:
> Rick,
> 
> The 144 Pin Adapter has 1 Mbyte of RAM which is organized as 256K 
x 
> 32 ( Two 16 bit RAM chips). The start address of the external RAM 
is 
> 0x81000000 ( Bank 1, EMC )
> 
> The following registers must be initialized to enable the 
> read/write/execute access.
> 
>    /* Connect A2 - A19, WE and CS1 */
>    *pinsel2 = 0xC6009E4;
>    /* Initialize Bank1 config in EMC, 32 bit with minimum waits */
>    *bcfg1 = 0x20000400;
> 
> V18A(143), V3A(14),VSSA(139) and VSSA_PLL(138) power supply pins 
are 
> not connected on the adapter. These pins needs to be connected if 
you 
> are using the PLL and ADC.
> 
> Philips Apps
> 
> --- In lpc2000@yahoogroups.com, "helicopterproject2003" 
> <helicopterproject2003@y...> wrote:
> > I have a EVBA7 with a 144 pin adapter with a LPC2214 chip. The 
> > adapter has 1MB of RAM which I think starts at 0x80000000. I 
also 
> > belived it is hardware straped to startup in 32bit data bus mode.
> > 
> > I can't seem to write anything into this memory. Even if I use 
the 
> > JTAG and IAR debugger to set any memory location above 0x8000000 
it 
> > stays set to zero which makes it appear to not be working at all 
or 

> > incorrectly addressed.
> > 
> > Anyone have any ideas?
> > 
> > Thanks
> > Rick

Rick:

If you have access to JTAG, built-in on EVBA7, then just use the 
supplied PathFinder debugger to manually set-up the external RAM, 
then load the code at that address.  Or, of course allow the flash to 
hold the code that initiallises the external RAM, or ...

Regards,

Ian

--- In lpc2000@yahoogroups.com, "helicopterproject2003" 
<helicopterproject2003@y...> wrote:
> I guess this means there is no way to use the ext RAM to load 
> program code for debugging purposes as you would the on-board RAM 
> because it is not available at reset.
> 
> My program has grown larger than the onboard 16K of memory. I was 
> hoping to use the ext RAM for testing and debugging by loading the 
> program code into this RAM by the JTAG. This would allow for many 
> more breakpoints than loading the program into flash.
> 
> Am I understanding your answer correctly that this is not possible?
> 
> Rick
> 
> --- In lpc2000@yahoogroups.com, "philips_apps" <philips_apps@y...> 
> wrote:
> > Rick,
> > 
> > The 144 Pin Adapter has 1 Mbyte of RAM which is organized as 256K 
> x 
> > 32 ( Two 16 bit RAM chips). The start address of the external RAM 
> is 
> > 0x81000000 ( Bank 1, EMC )
> > 
> > The following registers must be initialized to enable the 
> > read/write/execute access.
> > 
> >    /* Connect A2 - A19, WE and CS1 */
> >    *pinsel2 = 0xC6009E4;
> >    /* Initialize Bank1 config in EMC, 32 bit with minimum waits */
> >    *bcfg1 = 0x20000400;
> > 
> > V18A(143), V3A(14),VSSA(139) and VSSA_PLL(138) power supply pins 
> are 
> > not connected on the adapter. These pins needs to be connected if 
> you 
> > are using the PLL and ADC.
> > 
> > Philips Apps
> > 
> > --- In lpc2000@yahoogroups.com, "helicopterproject2003" 
> > <helicopterproject2003@y...> wrote:
> > > I have a EVBA7 with a 144 pin adapter with a LPC2214 chip. The 
> > > adapter has 1MB of RAM which I think starts at 0x80000000. I 
> also 
> > > belived it is hardware straped to startup in 32bit data bus 
mode.
> > > 
> > > I can't seem to write anything into this memory. Even if I use 
> the 
> > > JTAG and IAR debugger to set any memory location above 
0x8000000 
> it 
> > > stays set to zero which makes it appear to not be working at 
all 

> or 
> > > incorrectly addressed.
> > > 
> > > Anyone have any ideas?
> > > 
> > > Thanks
> > > Rick