CFAG320240CX-TFHTTS show blank screen

[andy78]

The display runs in 8080 Mode (0R change from J68 to J80)
The code is from Crystalfontz and I have the same MCU and have change the pins for my layout.

I use no external Contrast.
PIN DISPLOFF NC
PIN WAIT NC
PIN 18 NC
PIN 3 NC

The Display come not up.
MCU have 16MHZ.

View attachment main.txt

The pins are connected to MCU MCU works with 5V.

Best thanks

Crystalfontz LCD Blog

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[andy78]

Hello

I have use´now this LIB http://en.radzio.dxp.pl/sed1335/
All works fine but the Problem is drawing lines and circles and rectangles.


I think the Problem is here
void GLCD_SetPixel(unsigned int x,unsigned int y, int color)
{
unsigned char tmp = 0;
unsigned int address = SED1335_GRAPHICSTART + (40 * y) + (x/8);
GLCD_SetCursorAddress(address);

GLCD_WriteCommand(SED1335_MREAD);
tmp = GLCD_ReadData();

if(color)
tmp |= (1 << (SED1335_FX - (x % 8)));
else
tmp &= ~(1 << (SED1335_FX - (x % 8)));

GLCD_SetCursorAddress(address);
GLCD_WriteCommand(SED1335_MWRITE);
GLCD_WriteData(tmp);
}

unsigned char GLCD_ReadData(void)
{
unsigned char tmp;
SED1335_CONTROL1_PORT &= ~(SED1335_CS);
SED1335_CONTROL_PORT &= ~(SED1335_RD);
asm("nop");
SED1335_DATA_DIR = 0x00;
asm("nop");
tmp = SED1335_DATA_PIN;
SED1335_CONTROL1_PORT |= (SED1335_CS);
SED1335_CONTROL_PORT |= (SED1335_RD);
return tmp;
}

When i will set 3 pixel x=1-3;Y=2 Color=1 then I have spaces between pixel Pixel 1 is set 1,2 pixel2 ist set 3,2 pixel3 is set 8 9 10 ,2 (. . ..)


Has the 13700 other instructions for read???

Best thanks