CE6 操作GPIO方法

来源：互联网发布：二手已备案域名编辑：程序博客网时间：2024/06/06 09:16

转载请标明:作者 menuconfig

分为两部分应用和驱动

驱动部分在IOControl中实现

static volatile S3C6410_GPIO_REG *v_pIOPregs ;

DWORD LED_Init(LPCTSTR pContext, LPCVOID lpvBusContext) {
//Virtual address mapping
v_pIOPregs = (volatile S3C6410_GPIO_REG*)DrvLib_MapIoSpace(S3C6410_BASE_REG_PA_GPIO,
sizeof(S3C6410_GPIO_REG),
FALSE);
return 1;
}

BOOL LED_Deinit(DWORD hDeviceContext) {
VirtualFree((PVOID)v_pIOPregs, 0, MEM_RELEASE);
v_pIOPregs = NULL;
return TRUE;
}

BOOL LED_IOControl(DWORD Handle,
          DWORD dwIoControlCode,
          PBYTE pInBuf,
          DWORD nInBufSize,
          PBYTE pOutBuf,
          DWORD nOutBufSize,
          PDWORD pBytesReturned) {
switch (dwIoControlCode) {

case IOCTL_LED_CASHDRAWER_OPEN:                                       //CASHDRAWER_OPEN
  v_pIOPregs->GPMCON&=(~(0x0f<<4));
  v_pIOPregs->GPMCON|=0x1<<4;
  v_pIOPregs->GPMDAT|=(0x01<<1);
  OutputDebugString(L"CASHDRAWER_OPEN IO Control/n");
  break;
case IOCTL_LED_CASHDRAWER_CLOSE:                                       //CASHDRAWER_OPEN
  v_pIOPregs->GPMCON&=(~(0x0f<<4));
  v_pIOPregs->GPMCON|=0x1<<4;
  v_pIOPregs->GPMDAT&=~(0x01<<1);
  OutputDebugString(L"IOCTL_LED_CASHDRAWER_CLOSE IO Control/n");

}

return TRUE;
}

应用部分

#define IOCTL_LED_CASHDRAWER_OPEN           0x04001092
#define IOCTL_LED_CASHDRAWER_CLOSE           0x04001093
void OpenDrawer(void)
{
DWORD dwReturn = 0;
HANDLE hLed;
hLed = CreateFile(TEXT("LED1:"),GENERIC_READ|GENERIC_WRITE,0,NULL,OPEN_EXISTING,0,NULL);
if (hLed != INVALID_HANDLE_VALUE)
{
   DeviceIoControl(hLed,
        IOCTL_LED_CASHDRAWER_OPEN,
        NULL,
        sizeof(DWORD),
        NULL,
        0,
        &dwReturn,
        NULL);

   DeviceIoControl(hLed,
        IOCTL_LED_CASHDRAWER_CLOSE,
        NULL,
        sizeof(DWORD),
        NULL,
        0,
        &dwReturn,
        NULL);

   Sleep(200);
   RETAILMSG (1, (TEXT("APP CASHDRAWER_OPEN OK!/r/n"))) ;
}
else
{
   RETAILMSG (1, (TEXT("APP CASHDRAWER_OPEN false!/r/n"))) ;
}
CloseHandle(hLed);
}