test iclass sniff output

pm3 --> hf iclass sniff
#db# Snooping buffers initialized:
#db#   Trace: 39936 bytes
#db#   Reader -> tag: 32 bytes
#db#   tag -> Reader: 32 bytes
#db#   DMA: 256 bytes
....
....  actual sniffing... button pressed...
....
#db# Sniff statistics:
#db#  maxDataLen=0, Uart.state=0, Uart.byteCnt=0
#db#  Tracelen=1034, Uart.output[0]=0
#db# reader:
#db# ff ff ff ff ff ff ff ff
#db# ff ff ff ff ff ff ff ff
#db# ff ff ff ff ff ff ff ff
#db# ff ff ff ff ff ff f0 00
#db# 00 00 00 00 00 00 00 00
#db# 00 00 00 00 00 00 0f 3b
#db# 00 f0 b0 00 00 00 00 00
#db# 00 00 00 00 00 00 03 10
#db# 00 00 00 00 00 00 06 00
#db# 0a f2 00 00 00 00 00 00
#db# 00 00 00 00 00 00 00 00
#db# 00 00 00 00 00 00 00 00
#db# 00 00 00 00 00 00 00 00
#db# 00 00 00 00 00 00 00 00
#db# 00 00 00 00 00 00 00 00
#db# 00 00 00 00 00 00 00 00
#db# tag:
#db# 00 00 00 00 00 00 00 00
#db# 00 00 00 00 00 00 00 00
#db# 00 00 00 00 00 00 00 00
#db# 00 00 00 00 00 00 00 00
#db# 00 00 00 00 00 00 00 00
#db# 00 00 00 00 00 00 0a 3b
#db# 03 f4 b0 00 00 00 00 00
#db# 00 00 00 00 00 00 04 00
#db# 00 00 00 00 02 00 0a 10
#db# 02 80 00 00 00 00 00 00
#db# 00 00 00 00 00 00 00 00
#db# 00 00 00 00 00 00 00 00
#db# 00 00 00 00 00 00 00 00
#db# 00 00 00 00 00 00 00 00
#db# 00 00 00 00 00 00 00 00
#db# 00 00 00 00 00 00 00 00