MFRC522 Multiple SPI

[kita]

#MFRC522  Multi SPI

Connect SPI communication (MISO / MOSI / SCK / SS) with the microcomputer
I would like to do multi-control,
When multiple units are connected,
Even if you select the device you want to communicate with the SS terminal,
Other If the MISO port of the device is output "Low"
If the selected MISO output level goes down and the communication
It will not be possible.

Is MFRC 522 supported only 1: 1 SPI?

[Kan_Li · Accepted solution]

Yes, MFRC522 supports only one SPI interface.

Have a great day,
Kan

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[kita]

Hello,

Thank you for answering.

◆When MFRC 522 is used in 1 (Master): N (Slave)
I plan to communicate by switching the SS terminal and MISO port to the device I want to communicate with.
Is there not a problem?

※N (Slave) unit　MOSI / SCK / RST ports share.

◆Does MFRC-630 support 1 (Master): N (Slave) communication?

Best Regards,

Kan_Li