UART串口作为最为常用的工业设备接口之一被广泛且大量的应用，本文就基于Toradex ARM平台设备为例介绍WinCE下UART配置。 我们采用Colibri ARM核心板产品搭配Colibri开发板来进行测试，OS为Toradex官方发布的最新版WinCE，其中Colibri系列默认定义了三个串口，UART A, UART B和UART C，其中UART A用作调试串口使用，下面就分别针对不同SoC产品进行说明。 1). 基于NXP i.MX6Solo/DualLite的Colibri i.MX6产品 系统默认定义COM 1 – UART A (调试串口，全功能)；COM 2 – UART B (支持Flow control)；COM 3 – UART C；另外还支持额外的两个串口UART D和UART E，默认没有使能；所有串口默认均为DTE模式。 ./ 使能UART D方法，请在注册表中添加下面内容并保存 ----------------------------- [HKEY_LOCAL_MACHINEDriversBuiltInCOM4] "Order"=dword:00000002 "IoLen"=dword:000000d4 "IoBase"=dword:021f0000 "Index"=dword:00000004 "DeviceArrayIndex"=dword:00000003 "Prefix"="COM" "Dll"="csp_serial.dll"   [HKEY_LOCAL_MACHINEDriversBuiltInCOM4Unimodem] "DevConfig"=hex:10,00,00,00,05,00,00,00,10,01,00,00,00,4B,00,00,00,00,08,00,00,00,00,00,00 "DeviceType"=dword:00000000 "Tsp"="Unimodem.dll" "FriendlyName"="COM4 UNIMODEM"   [HKEY_LOCAL_MACHINEDriversBuiltInCOM4Pinout_Default] "colibripin_165"="altfn=3" "colibripin_167"="altfn=3" ----------------------------- ./ 使能UART E方法，请在注册表中添加下面内容并保存 ----------------------------- [HKEY_LOCAL_MACHINEDriversBuiltInCOM5] "Order"=dword:00000002 "IoLen"=dword:000000d4 "IoBase"=dword:021f4000 "Index"=dword:00000005 "DeviceArrayIndex"=dword:00000004 "Prefix"="COM" "Dll"="csp_serial.dll"   [HKEY_LOCAL_MACHINEDriversBuiltInCOM5Unimodem] "DevConfig"=hex:10,00,00,00,05,00,00,00,10,01,00,00,00,4B,00,00,00,00,08,00,00,00,00,00,00 "DeviceType"=dword:00000000 "Tsp"="Unimodem.dll" "FriendlyName"="COM5 UNIMODEM"   [HKEY_LOCAL_MACHINEDriversBuiltInCOM5Pinout_Default] "colibripin_169"="altfn=3" "colibripin_171"="altfn=3" ----------------------------- 2). 基于NXP Vybrid的Colibri VF50/VF61产品 系统默认定义COM 1 – UART A (调试串口，全功能控制引脚需使用GPIO)；COM 2 – UART B (支持Flow control)；COM 3 – UART C；另外还支持额外的两个串口UART D和UART E，默认没有使能。 ./ 使能UART D方法，请在注册表中添加下面内容并保存 ----------------------------- [HKEY_LOCAL_MACHINEDriversBuiltInUARTD] "DeviceArrayIndex"=dword:00000003 "Index"=dword:00000004 "Prefix"="COM" "Dll"="vybrid_serial.dll" "Order"=dword:00000001 "TXPIN"=dword:00000017 "TXAF"=dword:00000006 "RXPIN"=dword:0000001f "RXAF"=dword:00000006 ----------------------------- ./ 使能UART E方法，由于管脚和Colibir默认定义的SDHC接口冲突，因此需先关闭SDHC功能，请在注册表中修改下面内容并保存 ----------------------------- [HKEY_LOCAL_MACHINEDriversBuiltInESDHC] "Dll"="_esdhc.dll"   [HKEY_LOCAL_MACHINEDriversBuiltInUARTE] "DeviceArrayIndex"=dword:00000004 "Index"=dword:00000005 "Prefix"="COM" "Dll"="vybrid_serial.dll" "Order"=dword:00000001 "TXPIN"=dword:00000033 "TXAF"=dword:00000004 "RXPIN"=dword:00000035 "RXAF"=dword:00000004 ----------------------------- 3). 基于nVidia Tegra的Colibri T20/T30产品 系统默认定义COM 1 – UART A (UART 1,调试串口,全功能串口)；COM 2 – UART B (UART 4, 支持Flow control)；COM 3 – IrDA (WinCE6) 或UART C (WEC7)(UART2)；另外还支持额外的两个串口UART 3和UART 5，默认没有使能。 ./ WinCE6下COM 3 设置为普通串口方法，注册表如下修改 ----------------------------- [HKLMDriversBuiltInSerial3] " IrConnected"=dword:00000000   [HKLMCommIRSIR] " ImagePath "=" _irsir.dll " ----------------------------- ./ UART3 Pin脚定义 SODIMM Pin 115 (GMI_A2) – UART3 TxD SODIMM Pin 117(GMI_A3) – UART3 RxD ./ 使能UART 3方法，请在注册表中添加下面内容并保存 ----------------------------- [HKEY_LOCAL_MACHINEDriversBuiltInSerial4] "DeviceArrayIndex"=dword:00000083 "Prefix"="COM" "Dll"="libnvuart.dll" "Order"=dword:00000004 "Index"=dword:00000004 "IClass"=hex(7):7b,00,41,00,33,00,32,00,39,00,34,00,32,00,42,00,37,00,2d,00,39,00,32,00,30,   00,43,00,2d,00,34,00,38,00,36,00,62,00,2d,00,42,00,30,00,45,00,36,00,2d,00,   39,00,32,00,41,00,37,00,30,00,32,00,41,00,39,00,39,00,42,00,33,00,35,00,7d,   00,00,00,00,00   [HKEY_LOCAL_MACHINEDriversBuiltInSerial4Unimodem] "Tsp"="Unimodem.dll" "DeviceType"=dword:00000000 "FriendlyName"="Serial on COM4:" "DevConfig"=hex:10,00,00,00,05,00,00,00,10,01,00,00,00,4b,00,00,00,00,08,00,00,00,00,00,00 ----------------------------- ./ UART5 Pin脚定义 SODIMM Pin 192 – UART5 TxD SODIMM Pin 49 – UART5 RxD ./ 使能UART 5方法，由于管脚和Colibir默认定义的SDIO接口冲突，因此需先关闭SDIO功能，请在注册表中修改下面内容并保存 ----------------------------- [HKEY_LOCAL_MACHINEDriversBuiltInSDIO] "Dll"="_libnvsdio.dll"   [HKEY_LOCAL_MACHINEDriversBuiltInSerial5] "DeviceArrayIndex"=dword:00000084 "Prefix"="COM" "Dll"="libnvuart.dll" "Order"=dword:00000004 "Index"=dword:00000005 "IClass"=hex(7):7b,00,41,00,33,00,32,00,39,00,34,00,32,00,42,00,37,00,2d,00,39,00,32,00,30,   00,43,00,2d,00,34,00,38,00,36,00,62,00,2d,00,42,00,30,00,45,00,36,00,2d,00,   39,00,32,00,41,00,37,00,30,00,32,00,41,00,39,00,39,00,42,00,33,00,35,00,7d,   00,00,00,00,00   [HKEY_LOCAL_MACHINEDriversBuiltInSerial5Unimodem] "Tsp"="Unimodem.dll" "DeviceType"=dword:00000000 "FriendlyName"="Serial on COM5:" "DevConfig"=hex:10,00,00,00,05,00,00,00,10,01,00,00,00,4b,00,00,00,00,08,00,00,00,00,00,00 ----------------------------- 4). 关于UART更详细的说明请见这里，另外如何调用Lib库来访问UART请见这里。