Icop PDX-057T-D5A, Руководство пользователя

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PDX-057T
DM&P Vortex86DX

Panel PC with 5.7” VGA TFT LCD
22
void BackLightON()
{
// Set register 4AH bit1 to 0 to enable GPIOB
outportb(0x3d4, 0x4a);
unsigned c = inport(0x3d5) & 0xfd;
outportb(0x3d4, 0x4a);
outportb(0x3d5, c);
// Set register 48H bit1
outportb(0x3d4, 0x48);
c = inport(0x3d5) | 0x02;
outportb(0x3d4, 0x48);
outportb(0x3d5, c);
}
void BackLightOFF()
{
// Set register 4AH bit1 to 0 to enable GPIOB
outportb(0x3d4, 0x4a);
unsigned c = inport(0x3d5) & 0xfd;
outportb(0x3d4, 0x4a);
outportb(0x3d5, c);
// Clear register 48H bit1
outportb(0x3d4, 0x48);
c = inport(0x3d5) & 0xfd;
outportb(0x3d4, 0x48);
outportb(0x3d5, c);
}