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nokia 3210

From: Joris van Zwieten
Subject: nokia 3210
Date: Mon, 16 Dec 2002 01:48:26 +0100 (CET)

Hi all,

This question may not be directly related to gnokii, but I hope one of you
could help me out. I'm trying to connect my nokia 3210 to a AT90S2313
microcontroller. So far, everything works fine. I'm connecting to the
phone via MBUS version 2. For the moment, I just want to simulate a
key press.  The Data Link Layer part seems to be working fine. When I send
a frame requesting a keypress, I receive an ACK frame from the phone. So
it seems that checksum/sequence number/ etc. is ok. But:

1) nothing happens ( I don't see the key on the LCD of the phone )
2) I don't get an Application Layer Acknowledgement, ie.
   a frame from the phone with function 0x0c, subfunction 0x43

Any ides what could be wrong? Is there some initialization sequence
required to be able to sent keypress messages? For clarity, these are the
exact messages I'm transmitting:

.db  0x1f, 0x00, 0x1d, 0x0c, 0x00, 0x07, 0x00, 0x01,
     0x00, 0x42, 0x01, 0x0a, 0x01, 0x01, 0x41

.db  0x1f, 0x00, 0x1d, 0x0c, 0x00, 0x07, 0x00, 0x01,
     0x00, 0x42, 0x02, 0x0a, 0x01, 0x02, 0x41



'He who hurries through life, hurries to his grave.'
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