Tell me more ×
Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. It's 100% free, no registration required.
up vote 0 down vote favorite

Recently I bought a 32320 Smart Card Reader. I had no trouble making the circuit, but I could not figure out what command to use to tell if the card is in or not. Any ideas?

share|improve this question
No, because we don't know what a "32320" is! – Federico Russo May 24 '12 at 16:12
1  
Do you have a link to the datasheet? (and no, the linked document is not a datasheet) – Kellenjb May 24 '12 at 16:18
4  
In the linked document, you have the CD pin. Did you try using it? It should provide card presence information. – AndrejaKo May 24 '12 at 16:25
4  
Pin 2 = CD = Card Detect changes when card is inserted. Read it. – Russell McMahon May 24 '12 at 16:28

1 Answer

up vote 1 down vote

The code examples for the card reader is well hidden on their site. Nice products. hard to find docs. Look for the smart card code examples.
enter image description here

And dont worry if you dont give us enough information, It was hard for me to find it too.

**'' Define Smart Card connections  
' allows non-contiguous pin usage  
  cd := cdpin 
 dira[cd] := 0 
 pub detect | ok 
'' Detects insertion and presence of Smart Card  
  if (ina[cd] == 1)               ' inserted?  
    start                         ' check card  
   ok := (write($A0) == ACK)  
   stop  
  else  
  ok := false  
 return ok  *

http://obex.parallax.com/objects/649/

enter image description here http://www.parallax.com/Portals/0/Downloads/docs/prod/rf/32320-SmartCardReader-v1.0.pdf

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.