Which Spi pins do I need on the LoRa module?
Hello,
I would like to use this LoRa module, but I don't quite know how.
I know Sck but NIQR, Sdio, Csb and Fcsb mean nothing to me.
I would like to use this module with an Arduino.
Thanks in advance.
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What is the name of the built-in transceiver chip, or who is manufacturer of the module?
Idr gives a data sheet where you can read what these pins are at the end and what their meaning is.
If there is none, the part defacto is unusable anyway.
The chip is the cmt2300a
In this case, you should be able to find out how to connect the module with the data sheet and the manufacturer's indication.
Unfortunately, the terms of the module manufacturer do not correspond entirely to the terms of the manufacturer. Presumably, the SDIO-designed pin is the SDA Pin at the CMT2300A, with which you should already be able to realize the control.
But only as an info of the CMT2300A supports only FKS, MSK and OOK but no Lora.
http://www.cmostek.com/download/CMT2300A-EN-Rev0.7.pdf
Look at the data sheet, it's all in it anyway.
Supply voltage is 1.8V to 3.6V so you take 3.3V for supply and as IO voltage.
The manufacturer also has an example project. However, the SPI interface seems to be relatively special and I can only imagine that you only get it with a small hack or bit banging. You have to write code like that.
Okay, good to know, but should fit.
The problem is how to connect and whether it is 3.3 or 5 volt logic level
https://www.tme.eu/Document/ff6f63367594d7dfc3acfb9bd3461da3/CMT2300A.pdf