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DEVELOPING A USB SMARTCARD READER WITH ST7SCR

– CommandSize is the size of the buffer in bytes.

– ProtocolType is 0 (for T=0) or 1 (for T=1). This variable is used to set a flag tested in the

interrupt process at transmission and reception levels.

This function will return one of the following error codes:

– Slot_No_Error

– SlotError_ICC_Mute (if transfer not completed)

s

unsigned char ICC_ReceiveAnswerAsync(unsigned char * pReceiveBuffer, unsigned

int * pAnswerSize)

This function will receive a packet of bytes from the ICC with its waiting time already pro-

grammed.

– pReceiveBuffer is the address of the buffer to fill with the received data.

– pAnswerSize is the address of the data containing:

– Input: the size of the ReceiveBuffer in bytes.

– Output: the length in bytes of the received data written in the ReceiveBuffer.

This function will return one of the following error codes:

– Slot_No_Error

– SlotError_XFR_Overrun

– SlotError_ICC_Mute