Hi, Ladies and Gentalments,
I am using PN7462 CCID example with USB selective suspend and remote wakeup features.
When the device is entering suspend mode and insert a smart card, the card reader could be wakeup and work fine.
But it doesn't work if I am using nfc cards. The system will keep in the suspend state.
Becasue of the power consuption consideration, I am trying following solutions
1. RFLD: From the datasheet, PN7462 can detect RF level during sleep/standby mode. I am trying to change the wakeup config in the example code, but it doesn;t work for me. Does NXP have any document/examples to explain how to config RFLD to make system wakeup.
2. LPCD: From the documents, it says Low Power Card Detection function can save power by donfig the polling time. When I set the PHAC_DISCLOOP_CONFIG_ENABLE_LPCD feature to true in phExCcid_Clif.c and measuring the polling signal from anntena, the polling time is the same as the PHAC_DISCLOOP_CONFIG_ENABLE_LPCD was set to false. How dshould I do to enable LPCD feature on PN7462?
Any recommendation will be appreciated.