How to interpret card data? #34
Description
Sorry, I am new to NFC, and I'm trying to use this library to identify cards.
However, not sure how to use the data that your code examples spit out.
When I press a simple plastic NFC card against the reader, I get the following output:
{ deviceID: 'pn532_uart:/dev/ttyS0',
name: 'pn532_uart:/dev/ttyS0',
uid: '19:bf:1e:28',
type: 4,
tag: 'mifare-classic' }
[ { type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 255, len: 7, value: '8069ffffffffff' },
{ type: 255, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 1920 } ]
And for my phone:
{ deviceID: 'pn532_uart:/dev/ttyS0',
name: 'pn532_uart:/dev/ttyS0',
uid: '01:02:03:04',
type: 4,
tag: 'mifare-classic',
}
[ { type: 110, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 110, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 110, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 110, len: 0 },
{ type: 0, len: 0 },
{ type: 0, len: 0 },
{ type: 255, len: 7, value: '8069ffffffffff' },
{ type: 255,
len: 110,
value: '0000000000000000000000000000006e0000000000000000000000000000006e0000000000000000000000000000006e0000000000ff078069ffffffffffff6e0000000000000000000000000000006e0000000000000000000000000000006e0000000000000000000000000000' },
{ type: 0,
len: 110,
value: '0000000000ff078069ffffffffffff6e0000000000000000000000000000006e0000000000000000000000000000006e0000000000000000000000000000006e0000000000ff078069ffffffffffff6e0000000000000000000000000000006e0000000000000000000000000000' },
{ type: 0,
len: 110,
value: '0000000000000000000000000000006e0000000000ff078069ffffffffffff6e0000000000000000000000000000006e0000000000000000000000000000006e0000000000000000000000000000006e0000000000ff078069ffffffffffff6e0000000000000000000000000000' },
{ type: 0,
len: 110,
value: '0000000000000000000000000000006e0000000000000000000000000000006e0000000000ff078069ffffffffffff6e0000000000000000000000000000006e0000000000000000000000000000006e0000000000000000000000000000006e0000000000ff078069ffffffffff' },
{ type: 255,
len: 110,
value: '0000000000000000000000000000006e0000000000000000000000000000006e0000000000000000000000000000006e0000000000ff078069ffffffffffff6e0000000000000000000000000000006e0000000000000000000000000000006e0000000000000000000000000000' },
{ type: 0,
len: 110,
value: '0000000000ff078069ffffffffffff6e0000000000000000000000000000006e0000000000000000000000000000006e0000000000000000000000000000006e0000000000ff078069ffffffffffff6e0000000000000000000000000000006e0000000000000000000000000000' },
{ type: 0,
len: 110,
value: '0000000000000000000000000000006e0000000000ff078069ffffffffffff6e0000000000000000000000000000006e0000000000000000000000000000006e0000000000000000000000000000006e0000000000ff078069ffffffffffff6e0000000000000000000000000000' },
{ type: 0,
len: 110,
value: '0000000000000000000000000000006e0000000000000000000000000000006e0000000000ff078069ffffffffffff6e0000000000000000000000000000006e0000000000000000000000000000006e0000000000000000000000000000006e0000000000ff078069ffffffffff' },
{ type: 255 } ]
As the value 8069ffffffffff appears in both of the data arrays, I don't think that's the one.
The uid might be what I need, but why does my phone report 01:02:03:04. That can't be correct either.
Any thoughts?
Could you clarify the readme as to what this data format represents and how it's structured?