Lpc2000

> I'm looking for routines that enables my lpc2129 to safely read a
> .hex data file through the serial port into temporary RAM. Any
> ideas or code examples?
 
> Although the LPCs operate at high frequencies, I'm a bit
> concerened about just sending hex data just like an ordinary
> ASCII string because of possible problems which can cause data
> loss...for example, reading 1 ASCII value into memory too slowly
> between uart (RDA) interrupts.

What are you going to do with the HEX data? If you are going to 
turn it back into binary, just reduce to binary before sending. 
If you send it with (say) 128-byte Xmodem, overrun can be 
prevented by using a 131 byte serial buffer and enabling the 
FIFOs to reduce interrupt overhead. We run our USB Stamps this 
way and have no problems - I *never* see the retry counter go 
up. We process the incoming data before sending the block 
acknowledgement, so flow control is automatic. This is done on 
an LPC2106 at 60MHz with MAM fully enabled. The 2129 should be 
the same.

Stephen

--
Stephen Pelc, stephen@...
MicroProcessor Engineering Ltd - More Real, Less Time
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