I'm new on this forum and also in the uC world. Still I start a project with an LCD display 320x240 (RG320240A1-BIW-V manufactured by Raystar) controlled by RA8835(AP3N). I have connected an ATMEGA32 as follows: PORTC is data port(PINC0->DB0, ..., PINC7->DB7) and PORTD is control port (PIND0->A0, PIND1->WR, PIND2->RD, PIND3->CS, PIND4->RES). The display was factory set in mode 6800 but I have change it to 8080 mode. As I am beginner in uC and C programing I took some drivers and libraries for SED1335 from Internet as I found that SED1335 and RA8835 are compatible. I've spent tens of hours reading forums and documentation for this display and controller but still not working so decided to open this new topic. I know there are many others... There is nothing on display except some vertical white lines (is a negative display). I can adjust contrast but no more. I do not know if something else should be added in the connection diagram, should I use an external oscillator(xtal)?
Please somebody experienced with these displays/controllers help as I am really stuck.
I am using STK500 and AVR Studio 4.19 (AVR GCC) for programing the uC. Code is attached. On the AVR simulator seems that is working but nothing appears on display.
Please help with some ideas. Thanks in advance.