範例序列

以下是智慧卡資源管理員中的 IOCTL 範例序列：

啟動順序

1. 使用 DevObj 或 CfgMgr API 搭配智慧卡存取裝置介面 GUID 來探索 NFC 設備驅動器的名稱，並將其與 CreateFile 搭配使用，以開啟裝置句柄。

2. Initialize thread pool.

3. 判斷讀取器名稱。

   • IOCTL_SMARTCARD_GET_ATTRIBUTE on SCARD_ATTR_VENDOR_NAME, SCARD_ATTR_VENDOR_IFD_TYPE, and SCARD_ATTR_DEVICE_UNIT

4. 判斷讀取器特性。

   • IOCTL_SMARTCARD_GET_ATTRIBUTE on SCARD_ATTR_CHARACTERISTICS

5. 啟動卡片狀態監視器。

   • IOCTL_SMARTCARD_IS_PRESENT – To wait for a smart card arrival.

   • IOCTL_SMARTCARD_IS_ABSENT – To wait for the smart card departure.

因為我們不支援SCARD_SWALLOWED和SCARD_POWERED狀態，所以電源重設無關緊要。

Connect sequence

1. Start of loop.

2. IOCTL_SMARTCARD_GET_STATE

   • Case SCARD_UNKNOWN and SCARD_ABSENT, do nothing

   • Case SCARD_PRESENT, swallow card

   • Case SCARD_SWALLOWED, cold reset

   • Case SCARD_POWERED, warm reset

   • Case SCARD_NEGOTIABLE, determine the card ATR

   • Case SCARD_SPECIFIC, determine the card ATR and protocol

3. IOCTL_SMARTCARD_SET_PROTOCOL

Disconnect sequence

1. Power-down timeout starts.

2. Start of loop.

3. IOCTL_SMARTCARD_GET_STATE

   • Case SCARD_SPECIFIC, SCARD_NEGOTIABLE, SCARD_POWERED, set power down

   • Case SCARD_SWALLOWED, SCARD_PRESENT, do nothing

   • Case SCARD_ABSENT, SCARD_UNKNOWN, do nothing

相關主題

• NFC 設備驅動器介面 （DDI） 概觀
• Smart card DDI and command reference