昨天，胡sir问我如何把FL2440 的调试串口改为普通串口，我答应他晚上回去看看，晕，昨晚忘记带笔记本电源回去了。所以现在立即补上——我没有在平台上试过，不过我看了一下BSP，我觉得应该是按照如下步骤改的
一、看F:\开发板光盘\FL24402010.01.28\FL2440\Wince\BSP源码包\SMDK2440A_091112\SMDK2440A\Src\Kernel\Oal 下的debug.c文件有：
//------------------------------------------------------------------------------
// Defines
#define DEBUG_SERIAL_UART0 1
//#define DEBUG_SERIAL_UART1 1
#ifdef DEBUG_SERIAL_UART0
#define FEILING_DEBUG 1
#elif DEBUG_SERIAL_UART1
#define FEILING_DEBUG 1
#else
#define FEILING_DEBUG 0
#endif
//------------------------------------------------------------------------------
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如上说明FL2440 采用了 uart0作为 debug 串口。
再看F:\开发板光盘\FL24402010.01.28\FL2440\Wince\BSP源码包\SMDK2440A_091112\SMDK2440A 下的SMDK2440A.bat文件有
@REM DEBUG SERIAL PORT
@REM You also need to change the macro definition in debug.c
REM set DEBUG_SERIAL=
set DEBUG_SERIAL=SERIAL_UART0
REM set DEBUG_SERIAL=SERIAL_UART1
呵呵，正好和debug.c对应。
再来看F:\开发板光盘\FL24402010.01.28\FL2440\Wince\BSP源码包\SMDK2440A_091112\SMDK2440A\Files 下的platform.reg
; @CESYSGEN IF CE_MODULES_SERIAL
IF BSP_NOSERIAL !
IF BSP_NOUART0 !
IF BSP_KITL != SERIAL_UART0
IF DEBUG_SERIAL != SERIAL_UART0 ；这个宏定义造成uart0的驱动没有被加载成普通串口，呵呵，若要做普通串口，在SMDK2440A.bat把这个环境变量去掉
;=============== UART0 (physical COM1 connector P1) (Serial) ===============
[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial]
"DeviceArrayIndex"=dword:0
"Irq"=dword:1c
"MemBase"=dword:50000000
"MemLen"=dword:2C
"InterruptBitsShift"=dword:0 ; UART 0 Interrupt Sub Register shift bit.
"ISTTimeouts"=dword:200 ; every 512 ticks checking Modem status.
"Prefix"="COM"
"Index"=dword:1
"Dll"="serial_smdk2440.dll"
"Order"=dword:4
"Priority"=dword:0
"Port"="COM1:"
"DeviceType"=dword:0
"FriendlyName"=LOC_DISPLAYNAME_COM1
"Tsp"="unimodem.dll"
"IClass"="{CC5195AC-BA49-48a0-BE17-DF6D1B0173DD}"
"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
ENDIF
ENDIF
ENDIF
IF BSP_NOUART1 !
IF BSP_KITL != SERIAL_UART1
IF DEBUG_SERIAL != SERIAL_UART1
;=============== UART1 (physical COM2 connector P2) (Serial) ===============
[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial1]
"DeviceArrayIndex"=dword:1
"Irq"=dword:17
"MemBase"=dword:50004000
"MemLen"=dword:2C
"InterruptBitsShift"=dword:3 ; UART 1 Interrupt Sub Register shift bit.
"ISTTimeouts"=dword:200 ; every 512 ticks checking Modem status.
"Prefix"="COM"
"Index"=dword:2
"Dll"="serial_smdk2440.dll"
"Order"=dword:4
"Priority"=dword:0
"Port"="COM2:"
"DeviceType"=dword:0
"FriendlyName"=LOC_DISPLAYNAME_COM2
"Tsp"="unimodem.dll"
"IClass"="{CC5195AC-BA49-48a0-BE17-DF6D1B0173DD}"
"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
ENDIF
ENDIF
ENDIF
IF BSP_NOUART2 !
IF BSP_KITL != SERIAL_UART2
;=============== UART2 (physical COM3 connector P2) (Serial) ===============
[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial2]
"DeviceArrayIndex"=dword:1
"Irq"=dword:f
"MemBase"=dword:50008000
"MemLen"=dword:2C
"InterruptBitsShift"=dword:6 ; UART 2 Interrupt Sub Register shift bit.
"ISTTimeouts"=dword:200 ; every 512 ticks checking Modem status.
"Prefix"="COM"
"Index"=dword:3
"Dll"="serial_smdk2440.dll"
"Order"=dword:4
"Priority"=dword:0
"Port"="COM3:"
"DeviceType"=dword:0
"FriendlyName"="Serial Cable on COM3";LOC_DISPLAYNAME_COM3
"Tsp"="unimodem.dll"
"IClass"="{CC5195AC-BA49-48a0-BE17-DF6D1B0173DD}"
"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
ENDIF
ENDIF
IF BSP_NOIRDA !
; S2440 IrDA(UART2)
[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\IRDA2440]
"DeviceArrayIndex"=dword:2
"Irq"=dword:f
"MemBase"=dword:50008000
"MemLen"=dword:2C
"InterruptBitsShift"=dword:6 ; UART 2 Interrupt Sub Register shift bit.
;"ISTTimeouts"=dword:200 ; every 512 ticks checking Modem status.
"Prefix"="COM"
"Index"=dword:4
"Dll"="serial_smdk2440.Dll"
"Order"=dword:4
"Priority"=dword:0
"Port"="COM4:"
"DeviceType"=dword:0 ; IRDA modem, 0 -> null modem
"FriendlyName"=LOC_DISPLAYNAME_RAWIR
"IClass"="{CC5195AC-BA49-48a0-BE17-DF6D1B0173DD}"
"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
ENDIF
[HKEY_LOCAL_MACHINE\Comm\Irsir1\Parms]
"Port"=dword:4
; 0 = Use external dongle, 1 = Use internal IR
"IntIR"=dword:1
; 0 - internal transceiver, 1 - Extended Systems JetEye dongle.
"TransceiverType"=dword:0
ENDIF BSP_NOSERIAL !
;=========== End of UART(Serial) ===============
; @CESYSGEN ENDIF CE_MODULES_SERIAL
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从上面可以看出，Fl2440 已经有了三个串口作为普通串口驱动注册表信心，甚至红外也保留了。
现在来看最后一步，看看串口驱动的源码F:\开发板光盘\FL24402010.01.28\FL2440\Wince\BSP源码包\SMDK2440A_091112\SMDK2440A\Src\Drivers\Serial\ser_smdk2440.cpp
CSerialPDD * CreateSerialObject(LPTSTR lpActivePath, PVOID pMdd,PHWOBJ pHwObj, DWORD DeviceArrayIndex)
{
CSerialPDD * pSerialPDD = NULL;
switch (DeviceArrayIndex) {
case 0:
pSerialPDD = new CPdd2440Serial1(lpActivePath,pMdd, pHwObj);
break;
case 1:
pSerialPDD = new CPdd2440Serial2(lpActivePath,pMdd, pHwObj);
break;
case 2:
pSerialPDD = new CPdd2440Serial3(lpActivePath,pMdd, pHwObj);
break;
}
if (pSerialPDD && !pSerialPDD->Init()) {
delete pSerialPDD;
pSerialPDD = NULL;
}
return pSerialPDD;
}
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这个说明FL2440 已经完全具备三串口驱动，所以大家放心，调试串口很容易修改的。下面是修改结论：
一、F:\开发板光盘\FL24402010.01.28\FL2440\Wince\BSP源码包\SMDK2440A_091112\SMDK2440A\Src\Kernel\Oal 下的debug.c
中的#define DEBUG_SERIAL_UART0 1 屏蔽（//#define DEBUG_SERIAL_UART0 1）
二、F:\开发板光盘\FL24402010.01.28\FL2440\Wince\BSP源码包\SMDK2440A_091112\SMDK2440A 下的SMDK2440A.bat文件 的
set DEBUG_SERIAL=SERIAL_UART0 屏蔽（@set DEBUG_SERIAL=SERIAL_UART0） 即可，重新编译整个BSP，打包，我想这样com1 就可以当普通串口用了。呵呵。
本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/gooogleman/archive/2010/06/20/5680858.aspx#1515003
