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No. 44 Re: about EZL-80C UART transmission qusetion 2005-09-27

1st Problem:

In ATC mode, EZL-80c echo the AT command by default.
So you saw the message what you wrote.

If you input ATE0 command, the the echo messsage will be disappeared.
(ATE1: echo enable, ATE0: echo disable)


2nd Problem:
I think there are some problems.
For example:
1. PC is too slow or out of order
2. the Ground signal is not connected
3. voltage level problem(EZL-80c is 3.3V level)

(We checked it but there is no problem)

> Jason wrote:
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~
> I have a system including 8051(philp p89lpc922fn) EZL-80C,WLAN card.
> Now i have some problem.I connect
> (8051's TXD to ZEL80C's RXD and 8051's RXD to ZEL80C's TXD),when i input "AT+PRIP=192.192.70.23",but the ZEL80C responsed "AT+PRIP=192.192.70.23
> OK".
> Unfortunately the ezl-80c user's manual only put down in writing "OK",so i don't know why do they have this situation?
> Sometimes they have another situation.I use the super terminal to check the 8051's TXD output which is "AT+PRIP=192.192.70.23",but it often lost some words,example:"AT+PIP=192.12.70.23" or "A+PRIP=92.192.0.23",so i don't overcome this situation.Could you tell me how to do overcome these problems.

Writer Sollae Systems Company