Maxim-integrated 73S12xxF Software Manual do Utilizador descarregar pdf (Página 39)

UG_12xxF_016 73S12xxF Software User Guide

Rev. 1.50 39

Return Codes

ICC_OK The SmartCard is present and active.

ICC_ERR_PRESENT_INACTIVE The SmartCard is present but inactive.

ICC_ERR_NO_CARD The SmartCard is not present.

This API is part of the support for Synchronous cards.

ICC_Clk_Restart()

Purpose Restarts an ICC’s clock.

Synopsis ICC_Clk_Restart ( IN int nIccDelayIO );

Parameters nIccDelayIO: Input parameter

Delay in clock cycles after restart of the clock before allowing I/O.

Return Codes

ICC_OK Successful operation. IccLen bytes have been received from the SmartCard.

ICC_ERR_PRESENT_INACTIVE The SmartCard is present but inactive.

ICC_ERR_REMOVED The SmartCard is removed.

The hardware TIMER1 is used by this routine, making it unavailable to the application. This

approach helps support lower power consumption.

ICC_Clk_Stop()

Purpose Stops an ICC’s clock.

Synopsis ICC_RC ICC_Clk_Stop ( IN Boolean bIccClkStop, IN int nIccDelayStop );

Parameters bIccClkStop: Input parameter

Specifies whether to stop the IccClk when HIGH (TRUE) or when LOW (FALSE).

nIccDelayStop: Input parameter

Delay in clock cycles before stopping clock.

Return Codes ICC_OK Successful operation.

ICC_ERR_PRESENT The SmartCard is present but inactive.

ICC_ERR_REMOVED The SmartCard is removed

The hardware TIMER1 is used by this routine, making it unavailable to the application. This

approach helps support lower power consumption.

4.2.6 SERIAL (RS232) Driver API – Available with all 73S12xxF Devices

The Serial Driver API manages the RS232 interface (Serial Channel 0). It may be used to communicate

through the UART with any host that supports an RS232 interface. The API includes:

• Serial_Init() (page 40)

• Serial_Tx() (page 40)

• Serial_CTx() (page 41)

• Serial_TxLen() (page 41)

• Serial_TxByte () (page 41 )

• Serial_Rx() (page 41)

• Serial_CRx() (page 42)

• Serial_RxLen() (page 42)

• Serial_RxByte () (page 42)

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Maxim-integrated 73S12xxF Software Manual do Utilizador Página 39