#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?
Solved! Go to Solution.
Yes, MFRC522 supports only one SPI interface.
Have a great day,
Kan
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Yes, MFRC522 supports only one SPI interface.
Have a great day,
Kan
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Note: If this post answers your question, please click the Correct Answer button. Thank you!
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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