Lpc2000

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