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Sonsivri
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AVR, 8051 Family and ARM Area
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lpc2129 problem
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riteshjain_82
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lpc2129 problem
«
on:
May 25, 2009, 11:11:39 11:11 »
Hello
i have design a lpc2129 board in which i have facing problem in ISP.
while debugging i found the after sending '?' char on serial terminal it send "Synchronized<CR><LF>" properly but after i again send "Synchronized<CR><LF>" back it send garbage value and communicate disturb so ISP couldn't perform can anyone help where is the problem
i am using crystal of 12MHZ and using the max232 chip (notmax3232) where i pulled up the rx line by 10k
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cat53
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Re: lpc2129 problem
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Reply #1 on:
July 31, 2009, 01:48:01 01:48 »
Could you send the complete input/output ?
Did you receive string "Synchronized<CR><LF>" literally ? I didn't see any where in User manual of LPC21xx (ISP) section mentions of "Synchronized" string or any return code equivalent.
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riteshjain_82
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Re: lpc2129 problem
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Reply #2 on:
July 31, 2009, 11:36:22 11:36 »
Yes
this is done by the bootloder inside the arm
now my problem was also solved it is fault os max232 chip
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