OK210开发板使用感想续之亲自设计红外驱动

好了硬件准备完毕，现在开始写驱动。 1. 包含的头文件： //made in 2013-6-7 by mr wang #include "stdafx.h" #include #include #include #include #include #include #include "pmplatform.h" #include "Pkfuncs.h" #include #include #include "gpioentry_reg.h" #include typedef enum { EINT_SIGNAL_LOW_LEVEL = 0, EINT_SIGNAL_HIGH_LEVEL, EINT_SIGNAL_FALL_EDGE, EINT_SIGNAL_RISE_EDGE, EINT_SIGNAL_BOTH_EDGE }EINT_SIGNAL_METHOD; typedef enum { EINT_FILTER_DISABLE = 0, EINT_FILTER_DELAY, EINT_FILTER_DIGITAL }EINT_FILTER_METHOD; static volatile GPIO_REG* g_pGPIOReg = NULL; static DWORD g_dwSysIntrHS38= SYSINTR_UNDEFINED; static HANDLE g_hEventHS38= NULL; static HANDLE g_hEventResetBtn= NULL; static HANDLE g_hThreadHS38= NULL; static BOOL g_bExitThread= FALSE; static BOOL pwstatus=TRUE; void Delay_us(int n);// 延时 us BOOLIRS_date(void);// 判断遥控低电平 static void InitInterrupt(void);// 中断初始化 void IRS_port_init(void); // 引脚初始化 void IRS_enable_interrupt(void);// 使能中断 void IRS_disable_interrupt(void);// 不使能中断 void IRS_clear_interrupt_pending(void);// 清楚中断屏蔽位 BOOLIRS_set_filter_method(EINT_FILTER_METHOD eMethod, unsignedint uiFilterWidth);// 选择中断的 filter 方式 BOOLIRS_set_interrupt_method(EINT_SIGNAL_METHOD eMethod);// 设置中断方式 2. 解码线程： INTWINAPI HS38Thread(void) { int i,j; byte ircode[4];// 四位编码 while(!g_bExitThread) { WaitForSingleObject(g_hEventHS38,INFINITE); if(g_bExitThread) { break; } IRS_disable_interrupt(); // 禁止中断 IRS_clear_interrupt_pending(); // 清除中断标志位 InterruptDone(g_dwSysIntrHS38); // 中断完成，开始解码 Delay_us(8000);// 延时掉 ms 的低电平， while(IRS_date()); Delay_us(4000);//4.5ms 高电平 while(!IRS_date()); for(j=0;j<4;j++) { for(i=0;i<8;i++) { while(IRS_date()); Delay_us(700); if(IRS_date())// send 0 { ircode[j]=ircode[j]>>1; } else { ircode[j]=ircode[j]|0x80; ircode[j]=ircode[j]>>1; Delay_us(1200); } } } Sleep(100); RETAILMSG(1,(TEXT("******* ircode[3] = %x
"),ircode[3]));// 打印第三组操作码，便是按键的键码 IRS_enable_interrupt(); } return 0; } 3. 微妙延时函数 void Delay_us(int n) { LARGE_INTEGER litmp; LONGLONG QPart1,QPart2; doubledfMinus, dfFreq, dfTim; if(QueryPerformanceFrequency(&litmp)==FALSE) { return; } dfFreq = (double)litmp.QuadPart; QueryPerformanceCounter(&litmp); QPart1 = litmp.QuadPart; do { QueryPerformanceCounter(&litmp); QPart2=litmp.QuadPart; dfMinus=(double)(QPart2-QPart1); dfTim=dfMinus/dfFreq; }while(dfTim<0.000001*n); } 4. 其他流驱动接口函数 // 设置寄存器地址 BOOLHS38_initialize_register_address(void*pGPIOReg)//,void *pHSReg) { if(pGPIOReg == NULL) { returnFALSE; } else { g_pGPIOReg = (GPIO_REG *)pGPIOReg; } returnTRUE; } // 初始化 void IRS_port_init(void) { Set_PinFunction(g_pGPIOReg,GPH06_EXT_INT_6); Set_PinPullUD(g_pGPIOReg,GPH06_EXT_INT_6, sgip_PULL_UP); } // 使能引脚中断 void IRS_enable_interrupt(void) { Unmask_EXTINT(g_pGPIOReg, EXT_INT_6); } // 禁止引脚中断 void IRS_disable_interrupt(void) { Mask_EXTINT(g_pGPIOReg, EXT_INT_6); } // 清除引脚中断 void IRS_clear_interrupt_pending(void) { Clear_EXTINT(g_pGPIOReg, EXT_INT_6); } // 设置中断方式 BOOLIRS_set_interrupt_method(EINT_SIGNAL_METHOD eMethod) { BOOL Ret = TRUE; switch(eMethod) { caseEINT_SIGNAL_LOW_LEVEL: Set_EXTINT_TRLVL(g_pGPIOReg,EXT_INT_6, sgip_LOW_LEVEL); break; caseEINT_SIGNAL_HIGH_LEVEL: Set_EXTINT_TRLVL(g_pGPIOReg,EXT_INT_6, sgip_HIGH_LEVEL); break; caseEINT_SIGNAL_FALL_EDGE: Set_EXTINT_TRLVL(g_pGPIOReg,EXT_INT_6, sgip_FALLING_EDGE); break; caseEINT_SIGNAL_RISE_EDGE: Set_EXTINT_TRLVL(g_pGPIOReg,EXT_INT_6, sgip_RISING_EDGE); break; caseEINT_SIGNAL_BOTH_EDGE: Set_EXTINT_TRLVL(g_pGPIOReg,EXT_INT_6, sgip_BOTH_EDGE); break; default: Ret = FALSE; break; } returnRet; } // 设置中断 filter 方式 BOOLIRS_set_filter_method(EINT_FILTER_METHOD eMethod, unsignedint uiFilterWidth) { BOOL Ret =TRUE; switch(eMethod) { caseEINT_FILTER_DISABLE: Clr_EXTINT_FILTER(g_pGPIOReg,EXT_INT_6); break; caseEINT_FILTER_DELAY: Set_EXTINT_FILTER(g_pGPIOReg,EXT_INT_6, sgip_DELAY_FLT, 0); break; caseEINT_FILTER_DIGITAL: Set_EXTINT_FILTER(g_pGPIOReg,EXT_INT_6, sgip_DIGITAL_FLT, uiFilterWidth); break; default: Ret = FALSE; break; } returnRet; } // 判断遥控接收引脚低电平，返回 true BOOLIRS_date(void) { if(Get_PinData(g_pGPIOReg,GPH06_EXT_INT_6)) { returnFALSE; // LowActive Switch (Pull-up switch) } else { returnTRUE; } } static BOOL AllocResources(void) { DWORD dwIRQ; PHYSICAL_ADDRESS ioPhysicalBase = {0,0}; //------------------ // GPIOController SFR //------------------ ioPhysicalBase.LowPart =BASE_REG_PA_GPIO; g_pGPIOReg = (GPIO_REG*)MmMapIoSpace(ioPhysicalBase, sizeof(GPIO_REG),FALSE); if(g_pGPIOReg == NULL) { returnFALSE; } dwIRQ = IRQ_EINT6; g_dwSysIntrHS38 = SYSINTR_UNDEFINED; g_hEventHS38 = NULL; if(!KernelIoControl(IOCTL_HAL_REQUEST_SYSINTR, &dwIRQ, sizeof(DWORD), &g_dwSysIntrHS38, sizeof(DWORD), NULL)) { g_dwSysIntrHS38 =SYSINTR_UNDEFINED; returnFALSE; } g_hEventHS38 = CreateEvent(NULL, FALSE,FALSE, NULL); if(NULL== g_hEventHS38) { returnFALSE; } if(!(InterruptInitialize(g_dwSysIntrHS38, g_hEventHS38, 0, 0))) { returnFALSE; } returnTRUE; } static voidReleaseResources(void) { if(g_pGPIOReg != NULL) { MmUnmapIoSpace((PVOID)g_pGPIOReg, sizeof(GPIO_REG)); g_pGPIOReg = NULL; } if(g_dwSysIntrHS38 != SYSINTR_UNDEFINED) { InterruptDisable(g_dwSysIntrHS38); } if(g_hEventHS38 != NULL) { CloseHandle(g_hEventHS38); } if(g_dwSysIntrHS38 != SYSINTR_UNDEFINED) { KernelIoControl(IOCTL_HAL_RELEASE_SYSINTR,&g_dwSysIntrHS38, sizeof(DWORD), NULL, 0,NULL); } g_pGPIOReg = NULL; g_dwSysIntrHS38 = SYSINTR_UNDEFINED; g_hEventHS38 = NULL; } static void InitInterrupt(void) { // 禁止中断 IRS_disable_interrupt(); // I 初始化端口 IRS_port_init(); // 设置中断模式 IRS_set_interrupt_method(EINT_SIGNAL_BOTH_EDGE); IRS_set_filter_method(EINT_FILTER_DELAY,0); // 清除中断标志位 IRS_clear_interrupt_pending(); // 使能中断 IRS_enable_interrupt(); } BOOLWINAPI DllEntry(HANDLE hinstDLL, DWORD dwReason, LPVOID /* lpvReserved */) { switch(dwReason) { caseDLL_PROCESS_ATTACH: DEBUGREGISTER((HINSTANCE)hinstDLL); returnTRUE; caseDLL_THREAD_ATTACH: break; caseDLL_THREAD_DETACH: break; caseDLL_PROCESS_DETACH: break; #ifdef UNDER_CE caseDLL_PROCESS_EXITING: break; caseDLL_SYSTEM_STARTED: break; #endif } returnTRUE; } BOOLIRS_Deinit(DWORD hDeviceContext) { g_bExitThread = TRUE; if(g_hThreadHS38) // Make Sure if thread is exist { IRS_disable_interrupt(); IRS_clear_interrupt_pending(); //Signal Thread to Finish SetEvent(g_hEventHS38); // Waitfor Thread to Finish WaitForSingleObject(g_hThreadHS38,INFINITE); CloseHandle(g_hThreadHS38); g_hThreadHS38 = NULL; } ReleaseResources(); //RETAILMSG(1,(TEXT("USERLED:IRS_Deinit
"))); returnTRUE; } DWORDIRS_Init(DWORD dwContext) { RETAILMSG(1,(TEXT("Key_Gpio_Setting----
"))); if(AllocResources() == FALSE) { gotoCleanUp; } HS38_initialize_register_address((void *)g_pGPIOReg); InitInterrupt(); g_hThreadHS38 = CreateThread(NULL, 0,(LPTHREAD_START_ROUTINE) HS38Thread, NULL, 0, NULL); if(g_hThreadHS38 == NULL ) { gotoCleanUp; } returnTRUE; CleanUp: IRS_Deinit(0); returnFALSE; } //----------------------------------------------------------------------------- //----------------------------------------------------------------------------- BOOLIRS_IOControl(DWORD hOpenContext, DWORD dwCode, PBYTE pBufIn, DWORD dwLenIn, PBYTE pBufOut, DWORD dwLenOut, PDWORD pdwActualOut) { returnTRUE; } //----------------------------------------------------------------------------- //----------------------------------------------------------------------------- DWORDIRS_Open(DWORD hDeviceContext, DWORD AccessCode, DWORD ShareMode) { RETAILMSG(0,(TEXT("USERLED: IRS_Open
"))); returnTRUE; } //----------------------------------------------------------------------------- //----------------------------------------------------------------------------- BOOLIRS_Close(DWORD hOpenContext) { RETAILMSG(0,(TEXT("USERLED: IRS_Close
"))); returnTRUE; } //----------------------------------------------------------------------------- //----------------------------------------------------------------------------- void IRS_PowerDown(DWORD hDeviceContext) { RETAILMSG(0,(TEXT("USERLED: IRS_PowerDown
"))); } //----------------------------------------------------------------------------- //----------------------------------------------------------------------------- void IRS_PowerUp(DWORD hDeviceContext) { RETAILMSG(0,(TEXT("USERLED: IRS_PowerUp
"))); } //----------------------------------------------------------------------------- //----------------------------------------------------------------------------- DWORDIRS_Read(DWORD hOpenContext, LPVOID pBuffer, DWORD Count) { RETAILMSG(0,(TEXT("USERLED: IRS_Read
"))); returnTRUE; } //----------------------------------------------------------------------------- //----------------------------------------------------------------------------- DWORDIRS_Seek(DWORD hOpenContext, long Amount, DWORDType) { RETAILMSG(0,(TEXT("USERLED: IRS_Seek
"))); return 0; } //----------------------------------------------------------------------------- //----------------------------------------------------------------------------- DWORDIRS_Write(DWORD hOpenContext, LPCVOID pSourceBytes, DWORD NumberOfBytes) { RETAILMSG(0,(TEXT("USERLED: IRS_Write
"))); return 0; } 6. 实验结果，当你按下遥控器上的按键时， dnw 或超级终端上会显示相应的按键码如下：

长时间按某一个按键，会显示同一个键值如下：

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