Hello everyone,
I'm trying to find any information regarding interfacing the RI-RFM-007b/RI-RFM-008b.
I appreciate if soemone can guide me to find this information.
I plan to control these modules with an Arduino board.
Thanks in advance for any information..
Yigal
Yigal -
for controlling the RI-RFM-007B with any MCU, you need to reference the document (hyperlinked below) and adhere to the tag specific timings to write the code required for it.
for simple half duplex (HDX) read only transponder operations, for example in there you will find that you need to drop the TXCT line for 50mSec to make the Transmitter put out pulse long enough to activate the transponder, then raise it (which turns off the transmitter) and expect the tag response (which is ~20mSec long) - the response will be prebits, start byte, serial number and stop byte and end bits - you will need to decode start, serial # and stop bytes.
it will look something like this (this was taken from TMS3705, so you will see amplitude is much smaller than what -007B is capable of and SCIO is referenced, in -007B usage, this would be the RXDT (synced with RXCK):
