Hi all,
I'm playing around with some SLE4442 SmartCards, the same used here :
http://hackaday.com/2008/11/25/how-to-read-a-fedex-kinkos-smart-card-sle4442/Datasheet for SLE4442:
http://www.smartcardsupply.com/PDF/DS_sle4432_42_0795.pdf The interface is similar to I2C but not exactly the same. I need to send a clock pulse together with every bit I send to the SmartCard. I want to use the built in I2C ( or TWI as Atmel calls it) on the Axon to talk with the SmartCard. However, I2C bytes are 9 bits( one acknowledge bit), not 8 bits - I need 8 bits.
Very simply, I want to know how to use the built in I2C/TWI on the Axon to send clock pulses together with every bit , for bytes with a size of 8 bits
I also attached a part of the datasheet that deals with Resetting the SmartCard. It involves applying power to the Vcc Pin, Pulling the reset pin high, sending one clock pulse, pulling reset line low, and then sending out clock pulses to keep on receiving bits for a total of 32 bits or 8 bytes.
Thanks in Advance!