Win 10 IoT Core specify USART on our device (Export Serial.sys COM ports) 實作 COM 在自家板子上

English
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I use Bay-trail platform device to implement the COM with MBM image.

1. Connect to target device by SSH connection.

2. Check currently available USART interface by using "devcon" command.

ssh> devcon status *pnp0501

ACPI\PNP0501\0

    Name: Communications Port

    Driver is running.
ACPI\PNP0501\1

    Name: Communications Port

    Driver is running.

2 matching device(s) found.

3. Specify USART interface. (In below command, I try to assign port 0 be named "SER1:")

ssh> reg add "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\enum\acpi\pnp0501\0\Device Parameters" /v PortName /t REG_SZ /d "SER1"

The operation completed successfully.

4. Set USART interfaces as removable.

ssh> reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceOverrides\*PNP0501\LocationPaths\*" /v Removable /t REG_DWORD /d 1

The operation completed successfully.

5. Reboot system to make above settings effective.

ssh> shutdown /r

6. Use GitHub sample code to check the USART are correct.

中文
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使用 Bay-trail 平台的板子，使用 MBM image，實作 COM 的初始化。

1. 使用 SSH 連線至 device

2. 輸入"devcon status *pnp0501"

ssh> devcon status *pnp0501

ACPI\PNP0501\0

    Name: Communications Port

    Driver is running.
ACPI\PNP0501\1

    Name: Communications Port

    Driver is running.

2 matching device(s) found.

3. 新增以下機碼去註冊 COM port (以下機碼是初始化 port 0 並命名為"SER1")

ssh> reg add "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\enum\acpi\pnp0501\0\Device Parameters" /v PortName /t REG_SZ /d "SER1"

The operation completed successfully.

4. 新增以下機碼，設定為可卸除式裝置

ssh> reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\DeviceOverrides\*PNP0501\LocationPaths\*" /v Removable /t REG_DWORD /d 1

The operation completed successfully.

5. 重開機讓設定啟動

ssh> shutdown /r

6. 使用 GitHub 上的範例程式去測試是否成功掃到 COM ports。