Two devices using SPI Communications pins on UNO 10, 11, 12, 13 ?
i wanting project using arduino uno r3, ethernet shield , rfid reader ethernet shield , rfid both show use pins 10, 11, 12, , 13 spi communications uno. there way can redirect rfid use different set of pins or can use 1 of these devices.
any ideas?
thanks steve
any ideas?
thanks steve
you need 3 shared pins (clk, miso, mosi) plus 1 ss (slave select) each device on spi bus.
to communicate device set appropriate ss high , others low.p
to communicate device set appropriate ss high , others low.p
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