Lpc2000

FreeRTOS has been ported to the LPC2106:

http://www.freertos.org/

Leon

Now that is good news!

Shannon

On Wednesday, June 30, 2004, at 12:27 PM, leon_heller wrote:

> FreeRTOS has been ported to the LPC2106:
>
> http://www.freertos.org/
>
> Leon
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>

The only problem is I can not reach it. Has lpc2000 done the
equivalent of a slashdotting? :)

--- In lpc2000@yahoogroups.com, Shannon Holland <holland@l...> wrote:

> Now that is good news!
> 
> Shannon
> 
> On Wednesday, June 30, 2004, at 12:27 PM, leon_heller wrote:
> 
> > FreeRTOS has been ported to the LPC2106:
> >
> > http://www.freertos.org/
> >
> > Leon
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >

Just two quick questions.

The LPC2106 doesnt have an eeprom onboard, is it possible to access the
flash in regular operation or is it only when
the bootloader is enabled that this is possible (for instance)

flash unsigned char storage[50];
unsigned char some_stuff;

void main (void)
{
	while (1)
	{
	some_stuff = do_stuff();

		if ( some_stuff )
		{
		storage[0] = 1;
		some_stuff = 0;
		}
		else
		{
		storage[0] = 0;
		some_stuff = 0;
		}
	}
}

???

The Bootloader uses UART without the modem interface, can i connect this
uart to a Cygnal CP2101 seriel to USB converter
(this device only has a 512 byte buffer as far as i remember so what i dont
know is if the bootloader waits for some
character and then resumes operation like XON/XOFF sw flow control or if it
just bursts all the data out ?)

Best regards
Lasse Madsen

On Jul 1, 2004, at 2:04 AM, Lasse Madsen wrote:

> The Bootloader uses UART without the modem interface, can i connect 
> this
> uart to a Cygnal CP2101 seriel to USB converter
> (this device only has a 512 byte buffer as far as i remember so what i 
> dont
> know is if the bootloader waits for some
> character and then resumes operation like XON/XOFF sw flow control or 
> if it
> just bursts all the data out ?)
>

I think if you read the flash section of the user manual you will find 
the answers to your questions. There is a response from the bootloader 
for each section of flash image you download so flow control should not 
be a problem. To get into bootloader mode though you need to hold P0.14 
low at reset. So you either need GPIO and serial from your usb->serial 
converter or have some other way to hold that line low.

If you can drive some of the modem control lines on the CP2101 then you 
could have it manage reset and P0.14.

Shannon

Hi Shannon.

Thanks for your reply !

I dont think I'll use the CP2101's control pins
(you'd probertly never know if an interfacing application would drive them)
:)

But many thanks for the suggestion !

Regards
Lasse

-----Oprindelig meddelelse-----
Fra: Shannon Holland [mailto:holland@...]
Sendt: 1. juli 2004 17:40
Til: lpc2000@yahoogroups.com
Emne: Re: [lpc2000] Flash access & bootloader question ?



On Jul 1, 2004, at 2:04 AM, Lasse Madsen wrote:

> The Bootloader uses UART without the modem interface, can i connect
> this
> uart to a Cygnal CP2101 seriel to USB converter
> (this device only has a 512 byte buffer as far as i remember so what i
> dont
> know is if the bootloader waits for some
> character and then resumes operation like XON/XOFF sw flow control or
> if it
> just bursts all the data out ?)
>

I think if you read the flash section of the user manual you will find
the answers to your questions. There is a response from the bootloader
for each section of flash image you download so flow control should not
be a problem. To get into bootloader mode though you need to hold P0.14
low at reset. So you either need GPIO and serial from your usb->serial
converter or have some other way to hold that line low.

If you can drive some of the modem control lines on the CP2101 then you
could have it manage reset and P0.14.

Shannon





Yahoo! Groups Links

Hi folks, 

I'm having a rather worrying difficulty getting hold of a couple of samples of 
the 2294 for my prototype boards. Has anyone managed to get hold of any? I'm 
in the UK and have tried Eurodisney, Arrow and Silca, none of whom have any 
and seem to think samples can't obtained for another twenty weeks! 

Cheers,

Rob

--- In lpc2000@yahoogroups.com, Robert Wood <robert.wood@a...> wrote:
> Hi folks, 
> 
> I'm having a rather worrying difficulty getting hold of a couple of 
samples of 
> the 2294 for my prototype boards. Has anyone managed to get hold of 
any? I'm 
> in the UK and have tried Eurodisney, Arrow and Silca, none of whom 
have any 
> and seem to think samples can't obtained for another twenty weeks! 

Can't help with supply of the chips, but you could test some of the 
functionality of your boards with a different chip with a similar 
pinout.

Leon