The MCUXpresso SDK provides a peripheral drivers for the UART-ISO7816 and EMVSIM/USIM modules of MCUXpresso SDK devices.
Smart Card driver provides the necessary functions to access and control integrated circuit cards. The driver controls communication modules (UART/EMVSIM/USIM) and handles special ICC sequences, such as the activation/deactivation (using EMVSIM/USIM IP or external interface chip). The Smart Card driver consists of two IPs (SmartCard_Uart and SmartCard_EmvSim drivers) and three PHY drivers (smartcard_phy_emvsim, smartcard_phy_tda8035, and smartcard_phy_gpio drivers). These drivers can be combined, which means that the Smart Card driver wraps one IP (transmission) and one PHY (interface) driver.
The driver provides asynchronous functions to communicate with the Integrated Circuit Card (ICC). The driver contains RTOS adaptation layers which use semaphores as synchronization objects of synchronous transfers. The RTOS driver support also provides protection for multithreading.
SmartCard Driver Initialization
The Smart Card Driver is initialized by calling the SMARTCARD_Init() and SMARTCARD_PHY_Init() functions. The Smart Card Driver initialization configuration structure requires these settings:
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Smart Card voltage class
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Smart Card Interface options such as the RST, IRQ, CLK pins, and so on.
The driver also supports user callbacks for assertion/de-assertion Smart Card events and transfer finish event. This feature is useful to detect the card presence or for handling transfer events, for example, in RTOS. The user should initialize the Smart Card driver, which consist of IP and PHY drivers.
SmartCard Call diagram
Because the call diagram is complex, the detailed use of the Smart Card driver is not described in this section. For details about using the Smart Card driver, see the Smart Card driver example which describes a simple use case.
PHY driver
The Smart Card interface driver is initialized by calling the function SMARTCARD_PHY_Init(). During the initialization phase, Smart Card clock is configured and all hardware pins for IC handling are configured.
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| enum | {
kStatus_SMARTCARD_Success = MAKE_STATUS(kStatusGroup_SMARTCARD, 0),
kStatus_SMARTCARD_TxBusy = MAKE_STATUS(kStatusGroup_SMARTCARD, 1),
kStatus_SMARTCARD_RxBusy = MAKE_STATUS(kStatusGroup_SMARTCARD, 2),
kStatus_SMARTCARD_NoTransferInProgress = MAKE_STATUS(kStatusGroup_SMARTCARD, 3),
kStatus_SMARTCARD_Timeout = MAKE_STATUS(kStatusGroup_SMARTCARD, 4),
kStatus_SMARTCARD_Initialized,
kStatus_SMARTCARD_PhyInitialized,
kStatus_SMARTCARD_CardNotActivated = MAKE_STATUS(kStatusGroup_SMARTCARD, 7),
kStatus_SMARTCARD_InvalidInput,
kStatus_SMARTCARD_OtherError = MAKE_STATUS(kStatusGroup_SMARTCARD, 9)
} |
| | Smart card Error codes. More...
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| enum | _smartcard_control |
| | Control codes for the Smart card protocol timers and misc. More...
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| enum | _smartcard_card_voltage_class |
| | Defines Smart card interface voltage class values.
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| enum | _smartcard_transfer_state |
| | Defines Smart card I/O transfer states.
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| enum | _smartcard_reset_type |
| | Defines Smart card reset types.
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| enum | _smartcard_transport_type |
| | Defines Smart card transport protocol types.
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| enum | _smartcard_parity_type |
| | Defines Smart card data parity types.
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| enum | _smartcard_card_convention |
| | Defines data Convention format.
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| enum | _smartcard_interface_control |
| | Defines Smart card interface IC control types.
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| enum | _smartcard_direction |
| | Defines transfer direction. More...
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| struct _smartcard_card_params |
Data Fields |
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uint16_t | Fi |
| | 4 bits Fi - clock rate conversion integer
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uint8_t | fMax |
| | Maximum Smart card frequency in MHz.
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uint8_t | WI |
| | 8 bits WI - work wait time integer
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uint8_t | Di |
| | 4 bits DI - baud rate divisor
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uint8_t | BWI |
| | 4 bits BWI - block wait time integer
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uint8_t | CWI |
| | 4 bits CWI - character wait time integer
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uint8_t | BGI |
| | 4 bits BGI - block guard time integer
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uint8_t | GTN |
| | 8 bits GTN - extended guard time integer
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uint8_t | IFSC |
| | Indicates IFSC value of the card.
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| uint8_t | modeNegotiable |
| | Indicates if the card acts in negotiable or a specific mode. More...
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uint8_t | currentD |
| | 4 bits DI - current baud rate divisor
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uint8_t | status |
| | Indicates smart card status.
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bool | t0Indicated |
| | Indicates ff T=0 indicated in TD1 byte.
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bool | t1Indicated |
| | Indicates if T=1 indicated in TD2 byte.
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bool | atrComplete |
| | Indicates whether the ATR received from the card was complete or not.
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bool | atrValid |
| | Indicates whether the ATR received from the card was valid or not.
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bool | present |
| | Indicates if a smart card is present.
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bool | active |
| | Indicates if the smart card is activated.
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bool | faulty |
| | Indicates whether smart card/interface is faulty.
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smartcard_card_convention_t | convention |
| | Card convention, kSMARTCARD_DirectConvention for direct convention, kSMARTCARD_InverseConvention for inverse convention.
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| uint8_t _smartcard_card_params::modeNegotiable |
| struct _smartcard_timers_state |
Data Fields |
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volatile bool | adtExpired |
| | Indicates whether ADT timer expired.
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volatile bool | wwtExpired |
| | Indicates whether WWT timer expired.
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volatile bool | cwtExpired |
| | Indicates whether CWT timer expired.
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volatile bool | bwtExpired |
| | Indicates whether BWT timer expired.
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volatile bool | initCharTimerExpired |
| | Indicates whether reception timer
for initialization character (TS) after the RST has expired
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| struct _smartcard_interface_config |
Data Fields |
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uint32_t | smartCardClock |
| | Smart card interface clock [Hz].
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uint32_t | clockToResetDelay |
| | Indicates clock to RST apply delay [smart card clock cycles].
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uint8_t | clockModule |
| | Smart card clock module number.
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uint8_t | clockModuleChannel |
| | Smart card clock module channel number.
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uint8_t | clockModuleSourceClock |
| | Smart card clock module source clock [e.g., BusClk].
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smartcard_card_voltage_class_t | vcc |
| | Smart card voltage class.
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uint8_t | controlPort |
| | Smart card PHY control port instance.
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uint8_t | controlPin |
| | Smart card PHY control pin instance.
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uint8_t | irqPort |
| | Smart card PHY Interrupt port instance.
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uint8_t | irqPin |
| | Smart card PHY Interrupt pin instance.
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uint8_t | resetPort |
| | Smart card reset port instance.
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uint8_t | resetPin |
| | Smart card reset pin instance.
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uint8_t | vsel0Port |
| | Smart card PHY Vsel0 control port instance.
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uint8_t | vsel0Pin |
| | Smart card PHY Vsel0 control pin instance.
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uint8_t | vsel1Port |
| | Smart card PHY Vsel1 control port instance.
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uint8_t | vsel1Pin |
| | Smart card PHY Vsel1 control pin instance.
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uint8_t | dataPort |
| | Smart card PHY data port instance.
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uint8_t | dataPin |
| | Smart card PHY data pin instance.
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uint8_t | dataPinMux |
| | Smart card PHY data pin mux option.
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uint8_t | tsTimerId |
| | Numerical identifier of the External HW timer for Initial character detection.
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| uint8_t* _smartcard_xfer::buff |
| size_t _smartcard_xfer::size |
| struct _smartcard_context |
| uint8_t* _smartcard_context::xBuff |
| volatile size_t _smartcard_context::xSize |
| volatile bool _smartcard_context::xIsBusy |
| uint8_t _smartcard_context::txFifoEntryCount |
| uint8_t _smartcard_context::rxFifoThreshold |
| void* _smartcard_context::interfaceCallbackParam |
| void* _smartcard_context::transferCallbackParam |
| bool _smartcard_context::abortTransfer |
| Enumerator |
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| kStatus_SMARTCARD_Success |
Transfer ends successfully.
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| kStatus_SMARTCARD_TxBusy |
Transmit in progress.
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| kStatus_SMARTCARD_RxBusy |
Receiving in progress.
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| kStatus_SMARTCARD_NoTransferInProgress |
No transfer in progress.
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| kStatus_SMARTCARD_Timeout |
Transfer ends with time-out.
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| kStatus_SMARTCARD_Initialized |
Smart card driver is already initialized.
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| kStatus_SMARTCARD_PhyInitialized |
Smart card PHY drive is already initialized.
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| kStatus_SMARTCARD_CardNotActivated |
Smart card is not activated.
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| kStatus_SMARTCARD_InvalidInput |
Function called with invalid input arguments.
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| kStatus_SMARTCARD_OtherError |
Some other error occur.
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