Hello. I have one question. If I have one Arduino Uno and I want to use a RFID module (with tags) and a wireless Transciver, and both are working just on SPI, how can I connect them to the same Arduino, because an Uno has just one pair of MISO, MOSI, SS, ...... Thank You!
You wire them to the same pins. Only each device needs it's own enable pin, this can be any pin available.
if the devices are on a shield and both use the same pin, use the force and bend the enable pin of the upper shield.
The devices are not on a shield. But which is the enable pin? Does the enable pin belong to Arduino or to devices?
But which is the enable pin?
You tell me the device and a link to the data sheet and I might be able to tell you. Otherwise how can you expect anyone to know.
Does the enable pin belong to Arduino or to devices?
The device.
An SPI device has Clock, Data in, Data out, and Enable.
I assume that the enable pin has the same name for each spi device. Is SS the enable pin? Here is my device http://4.bp.blogspot.com/-bXNhv7EkrX4/USOMhSEHZyI/AAAAAAAACz8/Y5nJ13C9Atw/s1600/nRF24L01PA-LNA.png
Is SS the enable pin? Here is my device
Yes.In nrf24L01 module it is the pin 4(CSN).