Dear all,
Can you help me up with the problem that i encountered. Follow are the questions.
- For command that only deal with the reader, it uses T0 protocol where all the response byte will be received within 1 second period. If the response is not received within those period of work waiting time=1second, that mean there is some error occurred and we need to resent the command to the reader. Example of command: Startup command, Set Parameter command and Set Baud Rate command are commands that deal with reader only.
By default WI=10 (since TC2 byte is not in ATR)
Work Waiting Time = 960xWIx(F/fi) second
= 960x10x(372/4M)=0.8928 second. (less than 1 second)
Is that right?
- For T1 protocol command that sent from MCU to the reader, will the reader check for command packet checksum validity first then only sent the command to the card if it is valid. If the checksum is not valid, then the reader will not sent the command to the card but an ACK byte back to the MCU indicate checksum error and the MCU need to resent the command to the reader.True?
- If a T1 Protocol response from the card consist of 10 bytes where the first 5 byte is received within the BWT and CWT by the reader. However, the 6th byte of the response byte is not received within CWT, so will the card continue sending the rest of the response byte or stop there and ignore all the response that havent sent to the reader.
- Do we need to take into consideration the response packet transmission time delay between the reader and the host in the calcution of the Work Waiting Time. Since the BWT and CWT is time between the card and reader not card and host.
Thanks for helping.
Regards,
Jackie Wong
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