Card Detection Issue

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Card Detection Issue

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Contributor II

Hi, 

I am working on the PN7462 card reader with "phExCcid" example.

Whenever I restart the PC with PN7462-reader having contact card connected into it is not detecting card which is already present in reader.

So, Can you please provide the support for the detecting the card after restarting the system.

Looking forward for the support ...

Thanks in advance.

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NXP TechSupport
NXP TechSupport

Hi  ,

my recommendation would be you check the section 6.2 of the ISO 7816-3

here is an explanation about the activation, cold and warm reset, basically what happens is that if there is no answer  between 400 and 40000 clock cycles after rising the edge of the signal on RST ( at time Tb +Tc) , the device shall perform an deactivation 

to deactivate the card, you should do it the following order,

RDT shall be put to L

CLK  shall be put to L

I/O shall be put to L 

VCC shall be deactivated.

Section 6.4 of the ISO 7816-3

BR

Jonathan

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Contributor II

Hi @Jonathan,

I understand your point for the card activation & deactivation as per the section 6.2 of the ISO 7816-3.

But what if we enable the usb suspend macros :

1. #define PH_EXCCID_USB_IF_USB_SUSPEND_RESUME_FTR 0 /**< Suspend Feature Value = 1 Feature Enabled Value = 0 Feature disabled */
2. #define PH_EXCCID_USB_IF_USB_REMOTE_WAKEUP_FTR 0 /**< Remote Wake up Value = 1 Feature Enabled Value = 0 Feature disabled */

In "APP_NxpBuild.h" file, then it should need detect right ?

Basically I am not able to detect the CT card whenever I make enable the above macros from 0 to 1 and restart the PC for the card operations(RD/WR).

So, Can you please let know how can I detect the CT card after restarting the PC using "phExccid" example.

Looking forward for your response. 

Thanks & Regards

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Contributor II

Hi @Jonathan,

Can we implement it without using interrupt mechanism.

Means without using any PRESN pin(for interrupt) and queuing.

So, Can you please provide me your support for the same.

Regards

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