Quote:
Originally Posted by knc1
Tell us a bit more detail on your setup please.
What did you do about the:
RTS, CTS function connections on the board?
How did you set the board for 1v8 I/O interface level?
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I used only the following 4 (four) connections
Kindle<----------> UART-Adapter (my post #42)
RX <----------> TX
TX <-----------> RX
GND <-----------> Gnd
1.8 V <------------> VIO
I took 1.8v like showed on a picture from your "exposed" thread. checked it forehand with a multimeter and got 1.8v
I took the ground from a pin near the SIM.
Strange:
RX and TX LED on the board are permanent on (or blinking very fast, cant' tell).
When I disconnect the Kindle-Batterie, the "modem noise" got more (don't understand, where the "signals" are coming from)
Maybe I killed the RX pad on the Kindle Mobo, my soldering equipement isn't for SMD. So I'm not shure, if there is a good contact with the wire (I use 0,14mm2).