320 x 240 Monochrome display Inilization problem.

[mandar_mahajan]

Hi Everybody, I intend to use a 320 x 240 Monochrome display. the controller on the board is RAIO RA8835. I am using the attached file for initializing the same. If u look in my main.c file, I just call a function to display a text msg.
But I am not getting any results an display. Also during this process one display was damaged. I am frigthened to loose my 2nd one. I have checked the connections, they are right. PLZ SOMEBODY HELP ME. IS THERE IS ANY PROBLEM IN MY INILIZATION CODE??

My controller is 32 bit LPC2148.

Regards Mandar.

 

[mandar_mahajan]

can Somebody help me in this issue.

 

[bobcat1]

Hi

LPC2148 is a bit faster machine for the MONO-LCD you have to use lot of delay when writing to the LCD

Before starting with the driver check whether the physical connection to the lcd is working, by writing some data (any data like 0x55) to a read /write register on the LCD and read it back - if you read back the same data you write - it is working OK and you may continue ,other wise stop and fix the problem

All the best

Bobi

The microcontroller specialist

 

[mandar_mahajan]

Hi Bobi,
The problem is solved. Thanks for the reply. Actually in all the write command & write data instructions, the LCD BUSY STATUS must be checked. OR one may add a random delay. In my case, i checked the busy status of LCD as below:
while(1)
{
if(!(GLCD_ReadStatus() & 0x40))
break;
}

Now I can write Text as well as Graphic on my display.


Thanks & Regards
Mandar

 

[shalts]

Dear Mandar,

Can you please send me the working (last version) of your SED1335.c and your example file ? I have problem with my LCD however I searched and tried everyway mentioned in the forums.. desperate..