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Wince 串口驱动详解-转载
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
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; //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
{ 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; 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; }
else if(pHWHead1->dwIOBase == 0x50008000) //SP-UART2 LINE CONTROL
{ 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; 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; }
else //SP-UART? LINE CONTROL
{ 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; 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; }
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; pHWHead->s2410SerReg = (S2410_UART_REG *)v_pUART2regs;
pRegBase = (PUCHAR)pHWHead->s2410SerReg; pRegBase = (PUCHAR)UART2_BASE;
pHWHead->s2410SerReg = (S2410_UART_REG *)pRegBase; }
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; }
else if(pHWHead1->dwIOBase == 0x50008000)
{
pHWHead->bINT = BIT_UART2;
pHWHead->bTxINT = INTSUB_TXD2;
pHWHead->bRxINT = INTSUB_RXD2;
pHWHead->bErrINT = INTSUB_ERR2; }
else
{ } 再搜索:
if ( pHWHead->UseIrDA )
{
pHWHead->pUFTXH = (volatile unsigned char )&(v_pUART2regs->rUTXH);
pHWHead->pUFRXH = (volatile unsigned char )&(v_pUART2regs->rURXH); 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); */ 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 )
{ 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 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。 */
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; if USEVIRTUAL
else
endif
if USEVIRTUAL
else
endif
if USEVIRTUAL
else
endif
if USEVIRTUAL
else
endif
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
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
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
}
else
{
把这其中的代码修改为以下代码
}
}
else
{
pHWHead->pUFTXH = (volatile unsigned char )&(v_pUART0regs->rUTXH);
pHWHead->pUFRXH = (volatile unsigned char )&(v_pUART0regs->rURXH);
}
RETAILMSG(1,(TEXT("GetSerialObject Io2Obj\r\n")));
pSerObj = (PHWOBJ)(&Io2Obj);
}
else if(DeviceArrayIndex == 1)
pSerObj = (PHWOBJ)(&Io1Obj);
else
pSerObj = (PHWOBJ)(&IoObj);
(
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")')
)
)
)
*/
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