Modify CWI & BWI on A22CR?
Posted: Wed Jul 06, 2016 2:42 pm
Hi all,
I working on a simple EMV test/example card. I'm using a modified openEMV implementation.
I've instaled everything on a A22CR card using global platform pro with default settings.
When I use the pyAPDU tool to send individual commands to the card everything works perfectly as expected. But when I use an EMV compliant test terminal it fails to even get to the application selection step.
The issue appears to be that the ATR does not respond in a way as expected by EMV book 1. It seems TB3=9F, and the maximum value is 45. Is there a way to change the CWI and BWI of the A22CR? And if yes, how do I do this?
Thanks!
I working on a simple EMV test/example card. I'm using a modified openEMV implementation.
I've instaled everything on a A22CR card using global platform pro with default settings.
When I use the pyAPDU tool to send individual commands to the card everything works perfectly as expected. But when I use an EMV compliant test terminal it fails to even get to the application selection step.
The issue appears to be that the ATR does not respond in a way as expected by EMV book 1. It seems TB3=9F, and the maximum value is 45. Is there a way to change the CWI and BWI of the A22CR? And if yes, how do I do this?
Thanks!