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wince 串口驱动详解  

2011-06-21 12:34:14|  分类: WINCE |  标签: |举报 |字号 订阅

  下载LOFTER 我的照片书  |

1、(oalintr.h)注册串口中断
//SP-A1
/*
打开oalintr.h文件,我们添加一个新的串口,并定义中断号。
添加:
//SP-A8没什么说的就是注册中断
#define SYSINTR_SERIAL1  (SYSINTR_FIRMWARE+19)


这里,我们可以看到SYSINTR_SERIAL1定义到16+19=35=0x23,与注册表中一致。
然后修改下这个地方:
MapIrq2SysIntr(DWORD _Irq)
{
   if( _Irq<=19 )
       return ( SYSINTR_FIRMWARE + _Irq );
   else
       return (0xffffffff);

*/

2、(armint.c)在ISR中进行中断判断,中断使能
//SP-A2
/*
//SP-A9其中IntPendVal= s2410INT->rINTOFFSET
//INTOFFSET是中断偏移寄存器,显示中断请求源,跟SRCPND一样//在IRQ模式中,该寄存器显示INTPND寄存器中的中断请求

搜索:else if(IntPendVal == INTSRC_UART0)
在其后面添加:

 //SP-A10此处进行中断请求源的判断。INTSRC_UART1被定义为UART1的中断号,即SRCPND==23
 else if(IntPendVal == INTSRC_UART1)
 {
   //SP-A11 SUBSRCPND中包含一些中断请求的细节,对于串口就是INT_ERR、INT_RXD、INT_TXD
   //用于进一步判断中断类型
   SubIntPendVal = s2410INT->rSUBSRCPND;

   // Note that we only mask the sub source interrupt - the serial driver will clear the
   // sub source pending register.
   //
   //SP-A11.1如果是ERR1则该位置0,解除该位中断屏蔽INTSUBMSK
   if(SubIntPendVal & INTSUB_ERR1)
   {
     s2410INT->rINTSUBMSK |= INTSUB_ERR1;
   }
   else if(SubIntPendVal & INTSUB_RXD1)  //SP-A11.2 RXD1,解除该位中断屏蔽INTSUBMSK
   {
     s2410INT->rINTSUBMSK |= INTSUB_RXD1;
   }
   else if(SubIntPendVal & INTSUB_TXD1)  //SP-A11.3 TXD1,
   {
     s2410INT->rINTSUBMSK |= INTSUB_TXD1;
   }
   else
   {
     return(SYSINTR_NOP);   //SP-A11.4什么都没发生
   }
 
   // NOTE: Don't clear INTSRC:UART1 here - serial driver does that.
   //
   //SP-A12解放对应位的总中断屏蔽,此时中断请求IRQ已经传达给CPU
   s2410INT->rINTMSK |= BIT_UART1;

   //SP-A13 INTPND显示哪个中断处于非屏蔽且等待服务的状态,即“该中断被确定了(asserted 1)”,“相对于pending(待定)”
   //现在判断完成,即“该中断被确定了,所以向它发1,将之置0,清除中断请求
   if (s2410INT->rINTPND & BIT_UART1) s2410INT->rINTPND  = BIT_UART1;

   //SP-A14向Wince发出对应的逻辑中断处理请求
   return(SYSINTR_SERIAL1);
  
 }
*/

3、(cfw.c)在IST中进行对应中断的使能和禁止
/*
//SP-A15此处是串行中断初始化,将所有串行中断屏蔽unmask,将所有串行中断残留pending清除。
BOOL
OEMInterruptEnable(DWORD  idInt,  // @parm Interrupt ID to be enabled. See <l Interrupt ID's.Interrupt ID's>  for a list of possble values.
          LPVOID pvData,  // @parm ptr to data passed in in the <f InterruptInitialize> call
              DWORD  cbData)  // @parm Size of data pointed to be <p pvData>
找到这一句:case SYSINTR_SERIAL:
在其后面添加:

 case SYSINTR_SERIAL1:  // Serial port1.
   s2410INT->rSUBSRCPND  = (INTSUB_RXD1 | INTSUB_TXD1 | INTSUB_ERR1);
   s2410INT->rINTSUBMSK &= ~INTSUB_RXD1;    
   s2410INT->rINTSUBMSK &= ~INTSUB_TXD1;
   s2410INT->rINTSUBMSK &= ~INTSUB_ERR1;
   s2410INT->rSRCPND     = BIT_UART1;    
   // S3C2410X Developer Notice (page 4) warns against writing a 1 to a 0 bit in the INTPND register.
   if (s2410INT->rINTPND & BIT_UART1) s2410INT->rINTPND = BIT_UART1;
   s2410INT->rINTMSK    &= ~BIT_UART1;    
   break;

//SP-A16此处是串行中断禁止,即屏蔽所有串行中断位
搜索:
void
OEMInterruptDisable(DWORD idInt)  // @parm Interrupt ID to be disabled. See <t Interrupt ID's>
还是这一句:case SYSINTR_SERIAL:
在其后面添加:

 case SYSINTR_SERIAL1:
   s2410INT->rINTMSK    |= BIT_UART1;
   s2410INT->rINTSUBMSK |= INTSUB_RXD1;
   s2410INT->rINTSUBMSK |= INTSUB_TXD1;
   s2410INT->rINTSUBMSK |= INTSUB_ERR1;
   break;

//SP-A17解除屏蔽?
搜索:
void
OEMInterruptDone(DWORD idInt)  // @parm Interrupt ID. See <t Interrupt ID's>
依旧找到case SYSINTR_SERIAL:
在其后面添加:

 case SYSINTR_SERIAL1:
   s2410INT->rINTMSK    &= ~BIT_UART1;
   s2410INT->rINTSUBMSK &= ~INTSUB_RXD1;
   break;

*/

4、(ser2410_hw.c)驱动程序进行处理
//SP-A4
/*
打开串口源文件中ser2410_hw.c文件。
搜索:
S2410_SetSerialIOP(
      PVOID   pHead // @parm points to device head
      )
将其函数改为:

{
 //SP-A18 2410串口信息结构体
 PS2410_UART_INFO   pHWHead   = (PS2410_UART_INFO)pHead;
 PSER_INFO     pHWHead1  = (PSER_INFO)pHead;

 RETAILMSG(DEBUGMODE, (TEXT("S2410_SetSerialIOP \r\n")));
 if(pHWHead1->dwIOBase == 0x50004000)  //SP-UART1 LINE CONTROL
 {
 #if USEVIRTUAL
   EnterCriticalSection(&(pHWHead->RegCritSec));
   v_pIOPregs->rGPHCON &= ~(0x3<<8 | 0x3<<10 /*| 0x3<<12 | 0x3<<14*/); // clear uart 1 - rx, tx
   v_pIOPregs->rGPHCON |= (0x2<<8 | 0x2<<10 /*| 0x1<<12 | 0x0<<14*/);
   v_pIOPregs->rGPHCON |= (0x2<<0 | 0x2<<2 );
   v_pIOPregs->rGPHUP  |= 0x03;
   pHWHead->rDTRport = (volatile unsigned int *)&(v_pIOPregs->rGPHDAT);
   pHWHead->rDSRport = (volatile unsigned int *)&(v_pIOPregs->rGPHDAT);
   pHWHead->DtrPortNum = 0;
   pHWHead->DsrPortNum = 1;
 #else
   volatile IOPreg *s2410IOP;
   s2410IOP   = (volatile IOPreg *)IOP_BASE;
 
   EnterCriticalSection(&(pHWHead->RegCritSec));
   //SP-A19 IO口设置
   s2410IOP->rGPHCON &= ~(0x3<<8 | 0x3<<10/* | 0x3<<12 | 0x3<<14*/); // clear uart 1 - rx, tx
   s2410IOP->rGPHCON |= (0x2<<8 | 0x2<<10 /*| 0x1<<12 | 0x0<<14*/);
   s2410IOP->rGPHCON |= (0x2<<0 | 0x2<<2 );
   s2410IOP->rGPHUP  |= 0x03;
   pHWHead->rDTRport = (volatile unsigned int *)(IOP_BASE+0x74); //s2410IOP->rGPHDAT
   pHWHead->rDSRport = (volatile unsigned int *)(IOP_BASE+0x74);
   pHWHead->DtrPortNum = 0;
   pHWHead->DsrPortNum = 1;
 #endif
 }
 else if(pHWHead1->dwIOBase == 0x50008000)  //SP-UART2 LINE CONTROL
 {
 #if USEVIRTUAL
   EnterCriticalSection(&(pHWHead->RegCritSec));
   v_pIOPregs->rGPHCON &= ~( 0x3<<12 | 0x3<<14); // clear uart 2 - rx, tx
   v_pIOPregs->rGPHCON |= ( 0x2<<12 | 0x2<<14);
   v_pIOPregs->rGPHCON |= (0x2<<0 | 0x2<<2 );
   v_pIOPregs->rGPHUP  &= ~0xc0;
   pHWHead->rDTRport = (volatile unsigned int *)&(v_pIOPregs->rGPHDAT);
   pHWHead->rDSRport = (volatile unsigned int *)&(v_pIOPregs->rGPHDAT);
   pHWHead->DtrPortNum = 0;
   pHWHead->DsrPortNum = 1;
 #else
   volatile IOPreg *s2410IOP;
   s2410IOP   = (volatile IOPreg *)IOP_BASE;
 
   EnterCriticalSection(&(pHWHead->RegCritSec));
   s2410IOP->rGPHCON &= ~(0x3<<12 | 0x3<<14); // clear uart 2 - rx, tx
   s2410IOP->rGPHCON |= ( 0x02<<12 | 0x02<<14);
   s2410IOP->rGPHCON |= (0x2<<0 | 0x2<<2 );
   s2410IOP->rGPHUP  &= ~0xc0;
   pHWHead->rDTRport = (volatile unsigned int *)(IOP_BASE+0x74); //s2410IOP->rGPHDAT
   pHWHead->rDSRport = (volatile unsigned int *)(IOP_BASE+0x74);
   pHWHead->DtrPortNum = 0;
   pHWHead->DsrPortNum = 1;
 #endif   
 }
 else       //SP-UART? LINE CONTROL
 {
 #if USEVIRTUAL
   EnterCriticalSection(&(pHWHead->RegCritSec));
   v_pIOPregs->rGPHCON &= ~(0x3<<0 | 0x3<<2 | 0x3<<4 | 0x3<<6/* | 0x3<<12 | 0x3<<14*/); // clear uart 0 - rx, tx
   v_pIOPregs->rGPHCON |= (0x2<<4 | 0x2<<6/* | 0x1<<12 | 0x0<<14*/);
   v_pIOPregs->rGPHCON |= (0x2<<0 | 0x2<<2 );
   v_pIOPregs->rGPHUP  |= 0x03;
   pHWHead->rDTRport = (volatile unsigned int *)&(v_pIOPregs->rGPHDAT);
   pHWHead->rDSRport = (volatile unsigned int *)&(v_pIOPregs->rGPHDAT);
   pHWHead->DtrPortNum = 0;
   pHWHead->DsrPortNum = 1;
 #else
   volatile IOPreg *s2410IOP;
   s2410IOP   = (volatile IOPreg *)IOP_BASE;
 
   EnterCriticalSection(&(pHWHead->RegCritSec));
   s2410IOP->rGPHCON &= ~(0x3<<0 | 0x3<<2 | 0x3<<4 | 0x3<<6 /*| 0x3<<12 | 0x3<<14*/); // clear uart 0 - rx, tx
   s2410IOP->rGPHCON |= (0x2<<4 | 0x2<<6 /*| 0x1<<12 | 0x0<<14*/);
   s2410IOP->rGPHCON |= (0x2<<0 | 0x2<<2 );
   s2410IOP->rGPHUP  |= 0x03;
   pHWHead->rDTRport = (volatile unsigned int *)(IOP_BASE+0x74); //s2410IOP->rGPHDAT
   pHWHead->rDSRport = (volatile unsigned int *)(IOP_BASE+0x74);
   pHWHead->DtrPortNum = 0;
   pHWHead->DsrPortNum =1;
 #endif
 }
 LeaveCriticalSection(&(pHWHead->RegCritSec));
}


接着搜索:
SL_Init(
      PVOID   pHead, // @parm points to device head
      PUCHAR  pRegBase, // Pointer to 16550 register base
      UINT8   RegStride, // Stride amongst the 16550 registers
      EVENT_FUNC EventCallback, // This callback exists in MDD
      PVOID   pMddHead,   // This is the first parm to callback
      PLOOKUP_TBL   pBaudTable  // BaudRate Table
      )
在PS2410_UART_INFO   pHWHead   = (PS2410_UART_INFO)pHead;这一句后面添加:

PSER_INFO     pHWHead1  = (PSER_INFO)pHead;


再搜索:
 if ( pHWHead->UseIrDA )
 {
   pHWHead->bINT = BIT_UART2;
   pHWHead->bTxINT = INTSUB_TXD2;
   pHWHead->bRxINT = INTSUB_RXD2;
   pHWHead->bErrINT = INTSUB_ERR2;
#if USEVIRTUAL
   pHWHead->s2410SerReg = (S2410_UART_REG *)v_pUART2regs;
   pRegBase = (PUCHAR)pHWHead->s2410SerReg;
#else   
   pRegBase = (PUCHAR)UART2_BASE;
   pHWHead->s2410SerReg = (S2410_UART_REG *)pRegBase;
#endif
 }
 else
 {
 把这其中的代码修改为以下代码
 }

   if(pHWHead1->dwIOBase == 0x50004000)
   {
     pHWHead->bINT = BIT_UART1;
     pHWHead->bTxINT = INTSUB_TXD1;
     pHWHead->bRxINT = INTSUB_RXD1;
     pHWHead->bErrINT = INTSUB_ERR1;
   #if USEVIRTUAL
     pHWHead->s2410SerReg = (S2410_UART_REG *)v_pUART1regs;
     pRegBase = (PUCHAR)pHWHead->s2410SerReg;
   #else   
     pRegBase = (PUCHAR)UART1_BASE;
     pHWHead->s2410SerReg = (S2410_UART_REG *)pRegBase;
   #endif
    
   }
   else if(pHWHead1->dwIOBase == 0x50008000)
   {
     pHWHead->bINT = BIT_UART2;
     pHWHead->bTxINT = INTSUB_TXD2;
     pHWHead->bRxINT = INTSUB_RXD2;
     pHWHead->bErrINT = INTSUB_ERR2;
   #if USEVIRTUAL
     pHWHead->s2410SerReg = (S2410_UART_REG *)v_pUART2regs;
     pRegBase = (PUCHAR)pHWHead->s2410SerReg;
   #else   
     pRegBase = (PUCHAR)UART2_BASE;
     pHWHead->s2410SerReg = (S2410_UART_REG *)pRegBase;
   #endif
   }
   else
   {
    
     pHWHead->bINT = BIT_UART0;
     pHWHead->bTxINT = INTSUB_TXD0;
     pHWHead->bRxINT = INTSUB_RXD0;
     pHWHead->bErrINT = INTSUB_ERR0;
   #if USEVIRTUAL
     pHWHead->s2410SerReg = (S2410_UART_REG *)v_pUART0regs;
     pRegBase = (PUCHAR)pHWHead->s2410SerReg;
   #else   
     pRegBase = (PUCHAR)UART0_BASE;
     pHWHead->s2410SerReg = (S2410_UART_REG *)pRegBase;
   #endif
   }


再搜索:
 if ( pHWHead->UseIrDA )
 {
   pHWHead->pUFTXH = (volatile unsigned char *)&(v_pUART2regs->rUTXH);
   pHWHead->pUFRXH = (volatile unsigned char *)&(v_pUART2regs->rURXH);   
 }
 else
 {
 把这其中的代码修改为以下代码
 }

   if(pHWHead1->dwIOBase == 0x50004000)
   {
     pHWHead->pUFTXH = (volatile unsigned char *)&(v_pUART1regs->rUTXH);
     pHWHead->pUFRXH = (volatile unsigned char *)&(v_pUART1regs->rURXH);
   }
   else if(pHWHead1->dwIOBase == 0x50008000)
   {
     pHWHead->pUFTXH = (volatile unsigned char *)&(v_pUART2regs->rUTXH);
     pHWHead->pUFRXH = (volatile unsigned char *)&(v_pUART2regs->rURXH);      
   }
   else
   {
     pHWHead->pUFTXH = (volatile unsigned char *)&(v_pUART0regs->rUTXH);
     pHWHead->pUFRXH = (volatile unsigned char *)&(v_pUART0regs->rURXH);   
   }

*/

5、(ser2410_ser.c)驱动程序进一步处理
//SP-A4
*/
搜索:
const HWOBJ IoObj = {
 THREAD_AT_INIT,
 SYSINTR_SERIAL,
 (PHW_VTBL) &IoVTbl
};
在其后面添加:

const HWOBJ Io1Obj = {
 THREAD_AT_INIT,
 SYSINTR_SERIAL1,
 (PHW_VTBL) &IoVTbl
};

const HWOBJ Io2Obj = {
 THREAD_AT_INIT,
 SYSINTR_IR,
 (PHW_VTBL) &IoVTbl
};


接着搜索:
const PCHWOBJ HWObjects[] = {
 &IoObj,
 &IrObj
};
将其修改为:

const PCHWOBJ HWObjects[] = {
 &IoObj,
 &Io1Obj,
 &Io2Obj
};


再搜索:
GetSerialObject(
              DWORD DeviceArrayIndex
              )
将其函数改为:

{
 PHWOBJ pSerObj;

 DEBUGMSG(DEBUGMODE,(TEXT("GetSerialObject : DeviceArrayIndex = %d\r\n"), DeviceArrayIndex));

 // Now return this structure to the MDD.
 if ( DeviceArrayIndex == 2 )
 { 
   RETAILMSG(1,(TEXT("GetSerialObject Io2Obj\r\n")));
   pSerObj = (PHWOBJ)(&Io2Obj);
 }
 else if(DeviceArrayIndex == 1)
   pSerObj = (PHWOBJ)(&Io1Obj);
 else
   pSerObj = (PHWOBJ)(&IoObj);

 return (pSerObj);
}
*/

6、在CEC中增加特性
//SP-A6
/*
添加UART1这个feature。
搜索
ComponentType
(
 Name ( "Serial" )
 GUID ( {6563AD6C-E71C-11D4-B892-0050FC049781} )
 MaxResolvedImpsAllowed( 999 )
 Implementations
 (
   Implementation
   (
     Name ( "S32410 Serial UART" )
在其后面添加:

   Implementation 
   (
     Name ( "S32410 Serial UART1" )
     GUID ( {7C4427A5-286C-4C7A-B687-4E3B364D079B} )
     Description ( "Samsung S32410 serial UART controller." )
     BSPPlatformDir ( "smdk2410" )
     Version ( "5.0.0.0" )
     Locale ( 0409 )
     Vendor ( "Microsoft" )
     Date ( "2003-1-13" )
     SizeIsCPUDependent( 1 )
     BuildMethods
     (
       BuildMethod
       (
         GUID ( {07DA2083-6261-4ED6-B5BB-70CF4D930D68} )
         Step ( BSP )
         CPU ( "ARMV4" )
         CPU ( "ARMV4I" )
         Action ( '#BUILD(SOURCES,"$(_WINCEROOT)\PLATFORM\SMDK2410\drivers\serial")')
        )
     )
   )
*/

7、修改注册表
//SP-A7
/*
打开platform.reg文件,这个是WinCE注册表文件,在这里,我们要修改并添加串口。
搜索:[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\SER2410],这就是串口1。
将其下面的键值改为:

[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\SER2410]
  "DeviceArrayIndex"=dword:0
  "Irq"=dword:13
  "IoBase"=dword:50000000
  "IoLen"=dword:2C
  "Prefix"="COM"
  "Dll"="SER2410.Dll"
  "Order"=dword:0
  "Priority"=dword:0
  "Port"="COM1:"
  "DeviceType"=dword:0
  "FriendlyName"="Serial Cable on COM1:"
  "Tsp"="Unimodem.dll"
  "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


再在其后面添加串口2:

[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\SER2410_2]
  "DeviceArrayIndex"=dword:1
  "Irq"=dword:23
  "IoBase"=dword:50004000
  "IoLen"=dword:2C
  "Prefix"="COM"
  "Dll"="SER2410.Dll"
  "Order"=dword:1
  "Priority"=dword:0
  "Port"="COM2:"
  "DeviceType"=dword:0
  "FriendlyName"="Serial Cable on COM2:"
  "Tsp"="Unimodem.dll"
  "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

[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\SER2410_2\Unimodem]
  "Tsp"="Unimodem.dll"
  "DeviceType"=dword:0
  "FriendlyName"="SER2410_2 UNIMODEM"
  "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


再搜索:[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\IRDA2410],这个是红外,也要修改下:

[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\IRDA2410]
  "DeviceArrayIndex"=dword:2
  "Irq"=dword:19
  "IoBase"=dword:50008000
  "IoLen"=dword:2C
  "Prefix"="COM"
  "Dll"="IRDA2410.Dll"
  "Order"=dword:0
  "Priority"=dword:0
  "Port"="COM3:"
  "DeviceType"=dword:0  ; IRDA modem, 0 -> null modem
  "FriendlyName"="S2410 IRDA2410"
  "Index"=dword:2
  "IClass"="{A32942B7-920C-486b-B0E6-92A702A99B35}"


好了,注册表就改到这里,以上要特别注意Irq的值,要和oalintr.h里面的中断定义对应,并且注意Order的顺序,DeviceArrayIndex的值以及IoBase,后面串口源代码中要用到该值作判断。

*/

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