Differences

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--- cvend [2026-03-15 04:06 UTC (3 weeks ago)] – Remove extra embed at top of page penguinowl
+++ cvend [2026-03-17 20:08 UTC (2 weeks ago)] (current) – [Card reader flow] penguinowl
@@ Line 83: / Line 83: @@
 <- - Reader to Host
-==== Card reader flow ====
+==== Sample reader flow ====
   - Host enables desired card type with ''ProxCardFunction''.
   - Reader acknowledges with ''ProxCardFunctionReply''.
-  - Reader waits for card, will go to sleep without any stimuli. Can reawaken it with any host command (e.g. ''Status''.
+  - Reader waits for card, seems like it eventually goes to sleep without any stimuli. Might have to keep it awake by sending packets occasionally (e.g. ''Status'').
   - When card is scanned, reader sends the corresponding read packet if the card type is enabled (e.g. ''DESFireRead'' for DESFire). If type is not enabled, sends ''UnhandledCard''.
-  - Card data can then be queried by sending the equivalent command packets. Example for reading a page off a DESFire (commands documented in {{ 0:m075031_desfire.pdf }} (all of the following packets are of type ''DESFireCommand'' and ''DESFireCommandReply''):
+  - Card data can then be queried by sending the equivalent command packets. DESFire commands are documented in {{ 0:m075031_desfire.pdf }}. Example for reading a page off a DESFire ( all of the following packets are of type ''DESFireCommand'' and ''DESFireCommandReply''):
-  - Host sets DESFire application (e.g. packet type ''DESFireCommand'' with body ''0x5AF210E0'' for application ID ''0xE010F2''). **NOTE:** The application ID will vary between issuer/agency. For example, the stock software uses application ID ''F9C32B'' while Portland's TriMet uses the one in the example. You can check this for you card with an NFC reader or app.
+  - Host sets DESFire application (e.g. packet type ''DESFireCommand'' with body ''0x5AF210E0'' for application ID ''0xE010F2''). **NOTE:** The application ID will vary between issuer/agency. For example, the stock software uses application ID ''F9C32B'' while Portland's TriMet uses the one in the example. You can check this for your card with an NFC reader or app.
   - Reader responds with a status code in accordance with the documentation. This comes in the form of a ''DESFireCommandReply'' packet.
   - Host sends read command. To read the full contents of file 0x00, the body is ''0xBD00000000000000''.