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by javierfeto
Sat Sep 26, 2015 10:26 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: STICKY: Optional interfaces (I2C, I2S, SPI) and Device Tree
Replies: 128
Views: 152038

Re: Optional interfaces (I2C, I2S, SPI) and Device Tree

Hi, I have a problem usin RFID card reader (RC522) through SPI.
I need to manage 4 Card reader but the raspberry pi 2 onlyhave 2 CE pins, so it only allow to manage 2 card reader.
How can i fix this problem?? is there any card expansion??

Thanks and sorry my english
by javierfeto
Sat Aug 01, 2015 7:58 pm
Forum: Automation, sensing and robotics
Topic: Raspberry PI 2 and RC522 Problem reading data
Replies: 41
Views: 33792

Re: Raspberry PI 2 and RC522 Problem reading data

Hello dzasa,

i followed you instructions and now i can read tags!!!
Thanks very much

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