sim card atr
Hi,
I'm working on a smart card interface driver that sends APDU commands to a SIM card
and receives data from the same. This interaction happens at ISO 7816-3 level. At the
moment, the driver resets the SIM card by sending RESET signal and the card responds
to the signal by sending following ATR:
3B 3F 11 00 80 69 AF 03 30 04 B4 01 00 00 0E 83 08 9F 16
After receiving ATR, I set clock frequency of the interface device accordingly and transmit
an APDU command. But my problem is:
I never ever receive response from the SIM card post ATR.
Unfortunately, there's no technical manual provided with the card. I've tried some random
commands used in other cards in vain. I was hoping that the card will at least respond with
"invalid class/command" status bytes. There's absolutely no response from the card
post ATR. I would really appreciate if anybody can provide insight into this.
Thanks,
Rahul