WINCE6 GPIO 驱动

// GPI.cpp : Defines the entry point for the DLL application. // #include "GPI.h" #include <windows.h> #include <memory.h> #include <nkintr.h> #include <ceddk.h> #include <winioctl.h> #pragma comment(lib,"ceddk.lib") #define GIO_VENDOR CTL_CODE(FILE_DEVICE_SERIAL_PORT, 2090, METHOD_BUFFERED, FILE_ANY_ACCESS) static UCHAR * virGpioMemBase = NULL; /************************************************************************** * 基础函数定义 * **************************************************************************/ /************************************************************ * OutPortByte * * 向特定GPIO地址输出字节 */ static void OutPortByte(WORD wAddr,byte bValue) { if(NULL != virGpioMemBase) { if( W83627_EFER == wAddr) { WRITE_PORT_UCHAR(virGpioMemBase,bValue); } else { WRITE_PORT_UCHAR(virGpioMemBase+1,bValue); } RETAILMSG(TRUE, (TEXT(">>Liu wenlong-OutPortByte: Add:0x%x, Val:0x%x\r\n"),wAddr,bValue)); } else { RETAILMSG(TRUE, (TEXT(">>Liu wenlong-OutPortByte return for virGpioMemBase NULL\r\n"))); } } /************************************************************ * InPortByte * * 从特定GPIO地址读取字节 */ static byte InPortByte(WORD wAddr) { byte tmpRtnVal = 0xFF; if(NULL != virGpioMemBase) { if( W83627_EFER == wAddr) { tmpRtnVal = READ_PORT_UCHAR(virGpioMemBase); } else { tmpRtnVal = READ_PORT_UCHAR(virGpioMemBase+1); } RETAILMSG(TRUE, (TEXT(">>--Liu wenlong-InPortByte, Add:0x%x Val:0x%x!\r\n"),wAddr,tmpRtnVal)); } else { RETAILMSG(TRUE, (TEXT(">>Liu wenlong-InPortByte return for virGpioMemBase NULL\r\n"))); } return tmpRtnVal; } /************************************************************ * W83627Set * * 设定W8362 PIO A 值 */ static void W83627Set(byte ucParaVal) { RETAILMSG(TRUE, (TEXT(">>++Liu wenlong-W83627Set Val:0x%x!\r\n"),ucParaVal)); //enter the extended function mode，two successive writes of 0x87 must be applied to //Extended Function Enable Registers(EFERs，i.e. 2Eh) OutPortByte(W83627_EFER,0x87); OutPortByte(W83627_EFER,0x87); //CRF1(GP10-GP17 data register Default 0x00) //if a port is programmed to be an output port，then its respective bit can be read/write //if a port is programmed to be an input port，then its respective bit can only be read OutPortByte(W83627_EFIR,0x07); OutPortByte(W83627_EFDR,0x08); //实际写值到对应的寄存器 OutPortByte(W83627_EFIR ,0xF1); OutPortByte(W83627_EFDR ,ucParaVal); //exit extended function mode OutPortByte(W83627_EFER,0xAA); Sleep(1); } /************************************************************ * W83627Set * * 读取W8362 PIO A 值 */ static byte W83627Get() { byte tmpVal = 0; //enter the extended function mode，two successive writes of 0x87 must be applied to //Extended Function Enable Registers(EFERs，i.e. 2Eh) OutPortByte(W83627_EFER,0x87); OutPortByte(W83627_EFER,0x87); //Configurate the configuration registers //configure logical device 7(gp10-gp17)，configuration register CRF0，CRF1，CRF2 //select logical device 7 OutPortByte(W83627_EFIR,0x07); OutPortByte(W83627_EFDR,0x08); //CRF1(GP10-GP17 data register Default 0x00) //if a port is programmed to be an output port，then its respective bit can be read/write //if a port is programmed to be an input port，then its respective bit can only be read OutPortByte(W83627_EFIR,0xF1); tmpVal = InPortByte(W83627_EFDR); //exit extended function mode OutPortByte(W83627_EFER,0xAA); Sleep(1); RETAILMSG(TRUE, (TEXT(">>++Liu wenlong-W83627Get4 Val:0x%x!\r\n"),tmpVal)); return (byte)(tmpVal); } /************************************************************ * W83627VendorIdGet * * 读取W8362 部分厂家编号 */ static byte W83627VendorIdGet() { byte tmpVal = 0; //enter the extended function mode，two successive writes of 0x87 must be applied to //Extended Function Enable Registers(EFERs，i.e. 2Eh) OutPortByte(W83627_EFER,0x87); OutPortByte(W83627_EFER,0x87); //Configurate the configuration registers OutPortByte(W83627_EFER,0x20); tmpVal = InPortByte(W83627_EFDR); //exit extended function mode OutPortByte(W83627_EFER,0xAA); Sleep(1); RETAILMSG(TRUE, (TEXT(">>++Liu wenlong-W83627VendorIdGet:0x%x\r\n"),tmpVal)); return (byte)(tmpVal); } /************************************************************ * W83627GPIInit * * 初始化W83627GPI A 相关的寄存器 */ static void W83627GPIInit() { //enter the extended function mode，two successive writes of 0x87 must be applied to //Extended Function Enable Registers(EFERs，i.e. 2Eh) OutPortByte(W83627_EFER,0x87); OutPortByte(W83627_EFER,0x87); //Configurate the configuration registers OutPortByte(W83627_EFIR ,0x2a); //EFIR write control register index to EFIR OutPortByte(W83627_EFDR ,0x01); //GPIO20 119S //Configurate the configuration registers OutPortByte(W83627_EFIR ,0x2b); //EFIR write control register index to EFIR OutPortByte(W83627_EFDR ,0xFF); //GPIO21~GPIO27 //configure logical device 7(gp10-gp17)，configuration register CRF0，CRF1，CRF2 //select logical device 7 OutPortByte(W83627_EFIR,0x07); OutPortByte(W83627_EFDR,0x08); OutPortByte(W83627_EFIR,0x30); OutPortByte(W83627_EFDR,0x01); //CRF0(GP10-GP17 I/O selection register Default 0xff) //when set to a ’1’， respective GPIO port is programmed as an input port //when set to a ’0’， respective GPIO port is programmed as an output port OutPortByte(W83627_EFIR,0xF0); OutPortByte(W83627_EFDR,0x00); //GPIO10,11,12,13输入，14，15，16，17，输出 //CRF2(GP10-GP17 inversion register Default 0x00) //when set to a ’1’，the imcoming/outgoing port value is inverted //when set to a ’0’，the imcoming/outgoing port value is the same as in data register OutPortByte(W83627_EFIR,0xF2); OutPortByte(W83627_EFDR,0x00); //CRF1(GP10-GP17 data register Default 0x00) //if a port is programmed to be an output port，then its respective bit can be read/write //if a port is programmed to be an input port，then its respective bit can only be read OutPortByte(W83627_EFIR,0xF1); OutPortByte(W83627_EFDR,0x00); //exit extended function mode OutPortByte(W83627_EFER,0xAA); Sleep(10); RETAILMSG(TRUE, (TEXT(">>++Liu wenlong-W83627GPIInit\r\n"))); } BOOL APIENTRY DllMain( HANDLE hModule, DWORD ul_reason_for_call, LPVOID lpReserved ) { switch (ul_reason_for_call) { case DLL_PROCESS_ATTACH: case DLL_THREAD_ATTACH: case DLL_THREAD_DETACH: case DLL_PROCESS_DETACH: break; default: break; } return TRUE; } GPI_API DWORD GPI_Init(LPCTSTR pContext,DWORD dwBusContext) { PHYSICAL_ADDRESS IoAddress; IoAddress.LowPart = W83627_EFER;//硬件地址 IoAddress.HighPart = 0; virGpioMemBase = ( UCHAR *)MmMapIoSpace( IoAddress , 2 , FALSE ); if(NULL != virGpioMemBase) { RETAILMSG(TRUE, (TEXT(">>Liu wenlong-OutPortByte:MmMapIoSpace return:0x%x\r\n"),virGpioMemBase)); } else { RETAILMSG(TRUE, (TEXT(">>Liu wenlong-OutPortByte,MmMapIoSpace return NULL\r\n")));