Hardware Header [LCD Init]

Pokitto Programming
1

Hi,

A friend of me (a great coder) is actually writing an really cool lib for the pokitto.

We actually need the hardware LCD init, write pixel ect…
We don’t want to loose time re-write LCD init ect…(the doc seem clear but why lossing time setup something that
you have allready done and tested working on hardware).

Could upload the hardware code for the pokitto on github ?
(actually only the simulator part is upload not the hardware code)

thanks

2

Hardware code is going to be available soon. But I need to focus on exactly the right stuff at the moment - so I am not putting up the WIP HW library until I am 100% done with it. I am so short on time.

Here is the init code for the display:

void Pokitto::lcdInit() {
initBacklight();

SET_RESET;
wait_ms(10);
CLR_RESET;
wait_ms(10);
SET_RESET;
wait_ms(10);
//************* Start Initial Sequence **********//
write_command(0x01); // driver output control, this also affects direction
write_data(0x11C); // originally: 0x11C 100011100 SS,NL4,NL3,NL2
// NL4…0 is the number of scan lines to drive the screen !!!
// so 11100 is 1c = 220 lines, correct
// test 1: 0x1C 11100 SS=0,NL4,NL3,NL2 -> no effect
// test 2: 0x31C 1100011100 GS=1,SS=1,NL4,NL3,NL2 -> no effect
// test 3: 0x51C 10100011100 SM=1,GS=0,SS=1,NL4,NL3,NL2 -> no effect
// test 4: 0x71C SM=1,GS=1,SS=1,NL4,NL3,NL2
// test 5: 0x
// seems to have no effect… is this perhaps only for RGB mode ?

write_command(0x02); // LCD driving control
write_data(0x0100); // INV = 1

write_command(0x03); // Entry mode... lets try if this affects the direction
write_data(0x1030); // originally 0x1030 1000000110000 BGR,ID1,ID0
                    // test 1: 0x1038 1000000111000 BGR,ID1,ID0,AM=1 ->drawing DRAM horizontally
                    // test 4: am=1, id0=0, id1=0, 1000000001000,0x1008 -> same as above, but flipped on long
                    // test 2: am=0, id0=0, 1000000100000, 0x1020 -> flipped on long axis
                    // test 3: am=0, id1=0, 1000000010000, 0x1010 -> picture flowed over back to screen

write_command(0x08); // Display control 2
write_data(0x0808); // 100000001000 FP2,BP2

write_command(0x0C); // RGB display interface
write_data(0x0000); // all off

write_command(0x0F); // Frame marker position
write_data(0x0001); // OSC_EN

write_command(0x20);  // Horizontal DRAM Address
write_data(0x0000);  // 0

write_command(0x21);  // Vertical DRAM Address
write_data(0x0000); // 0

//*************Power On sequence ****************//
write_command(0x10);
write_data(0x0000);

write_command(0x11);
write_data(0x1000);
wait_ms(10);

//------------------------ Set GRAM area --------------------------------//
write_command(0x30); // Gate scan position
write_data(0x0000); // if GS=0, 00h=G1, else 00h=G220

write_command(0x31); // Vertical scroll control
write_data(0x00DB); // scroll start line 11011011 = 219

write_command(0x32); // Vertical scroll control
write_data(0x0000); // scroll end line 0

write_command(0x33); // Vertical scroll control
write_data(0x0000); // 0=vertical scroll disabled

write_command(0x34); // Partial screen driving control
write_data(0x00DB); // db = full screen (end)

write_command(0x35); // partial screen
write_data(0x0000); // 0 = start

write_command(0x36); // Horizontal and vertical RAM position
write_data(0x00AF); //end address 175

write_command(0x37);
write_data(0x0000); // start address 0

write_command(0x38);
write_data(0x00DB); //end address 219

write_command(0x39); // start address 0
write_data(0x0000);
wait_ms(10);
write_command(0xff); // start gamma register control
write_data(0x0003);

// ----------- Adjust the Gamma Curve ----------//
write_command(0x50);
write_data(0x0203);

write_command(0x051);
write_data(0x0A09);

write_command(0x52);
write_data(0x0005);

write_command(0x53);
write_data(0x1021);

write_command(0x54);
write_data(0x0602);

write_command(0x55);
write_data(0x0003);

write_command(0x56);
write_data(0x0703);

write_command(0x57);
write_data(0x0507);

write_command(0x58);
write_data(0x1021);

write_command(0x59);
write_data(0x0703);

write_command(0xB0);
write_data(0x2501);

write_command(0xFF);
write_data(0x0000);

write_command(0x07);
write_data(0x1017);
wait_ms(200);
write_command(0x22);

lcdClear();

}

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