wince 3.5寸屏开关背光

最新推荐文章于 2022-10-31 13:30:21 发布

SVS4414

最新推荐文章于 2022-10-31 13:30:21 发布

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CC 4.0 BY-SA版权

本文链接：https://blog.youkuaiyun.com/SVS4414/article/details/38732229

1，在led的驱动添加

BOOL GIO_IOControl(DWORD hOpenContext, DWORD dwCode, PBYTE pBufIn, DWORD dwLenIn, PBYTE pBufOut, DWORD dwLenOut, PDWORD pdwActualOut)
{
switch(dwCode)
{
case IO_CTL_GPIO_1_ON:
  v_pGPIORegs->GPEDAT &= ~(0x1<<13);
  break;
case IO_CTL_GPIO_2_ON:
  v_pGPIORegs->GPEDAT &= ~(0x1<<12);
  break;
case IO_CTL_GPIO_3_ON:
  v_pGPIORegs->GPLDAT &= ~(1<<13);
  break;
case IO_CTL_GPIO_4_ON:
  v_pGPIORegs->GPEDAT &= ~(0x1<<11);
  break;
case IO_CTL_GPIO_5_ON:
  v_pGPIORegs->GPGDAT &= ~(1<<2);
  break;
case IO_CTL_GPIO_6_ON:
  //v_pGPIORegs->GPADAT &= ~(1<<15);
  break;
case BACKLIGHT_ON: //开背光
  v_pGPIORegs->GPBCON = v_pGPIORegs->GPBCON & ~(0x3<<0) | (0x1<<0);
  v_pGPIORegs->GPBDAT = v_pGPIORegs->GPBDAT | 0x1;
  break;
case BACKLIGHT_OFF://关背光
  v_pGPIORegs->GPBCON = v_pGPIORegs->GPBCON & ~(0x3<<0) | (0x1<<0);
  v_pGPIORegs->GPBDAT = v_pGPIORegs->GPBDAT &(~0x1);
  break;
case IO_CTL_GPIO_ALL_ON:
  v_pGPIORegs->GPEDAT &= ~((0x1<<13)|(0x1<<12)|(0x1<<11));
  v_pGPIORegs->GPLDAT &= ~(1<<13);
  v_pGPIORegs->GPGDAT &= ~(1<<2);
  //v_pGPIORegs->GPADAT &= ~(1<<15);
  break;

2，在led应用程添加

void CledDlg::OnBnClickedButton7()
{ Ledbk=CreateFile(_T("GIO1:"),GENERIC_WRITE | GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL);
DeviceIoControl(Ledbk,BACKLIGHT_ON,NULL,0,NULL,0,NULL,NULL);
// TODO: 在此添加控件通知处理程序代码
//DeviceIoControl(Led6,IO_CTL_GPIO_6_ON,NULL,0,NULL,0,NULL,NULL);
//CloseHandle(Led6);
}

void CledDlg::Onbklightoff()
{
DeviceIoControl(Ledbk,BACKLIGHT_OFF,NULL,0,NULL,0,NULL,NULL);
CloseHandle(Led6);
// TODO: 在此添加控件通知处理程序代码
}