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Attached my project. It's only for testing if I can get the TFT working...
In the meantime I did some experiments with resistive pull up/down the data lines but no result.
I hope you can help!
Seems to be a hard question...
Maybe it has something to do with timing? I found that it makes no difference when I change the clock fequency on the input of the Cy module.
Has anyone experiences with the Grafhic LCD 8-bit parallel interface module with or w/o the emWin files?
I have only one project with Grafhic LCD 8-bit parallel interface module for WG240128_5LP.zip here for WG240128R-TFH
I did not use EmWin library from Segger:
- I read: emWin license frozen
- It seemed to me that this too cumbersome and redundant, especially for PSoC4
- I could not find drivers from segger for my displays but found a lot of ready-made private decisions.
But this is just the problem of my qualifications.
Thanks for info. When I was looking at your set-up, I realized that it was quite the same as mine. So the problem must be in the hardware. And it was....
Self-willed as I am, I found that it should be possible to control the lcd with an 8-bits interface. But I forgot that this display had an other possibility for 8-bits control, namely by using a 8-bits 74HC573 latch, activated by a adding a resistor. And that was the solution.
Before I could start testing, I had to set the Cy interface back to 16-bits, add a LE line in the design to control the latch and modified the original source to split the 16 bits data to 2 times 8-bits, write the low byte into the latch, latched it and write the high byte. Then clocked it into the LCD controller. The 8-bits data from the PsoC is connected to D10-D17 of the LCD module.
On the attached picture you can see the result. Maybe it’s an idea for Cypress to add an new 8-bit Graphic LCD module using a latch, because these kind of GLCD is also very popular.
B.t.w. I had no problem using the (old..) emWin files in my PSoC5 envirement.
Could you please post updated example project. What is your screen resolution and max update rate?
Can you please post the updated project file?
Hi odissey1 and majed,
Attached my test project.
I made a new module based on the original Graphic LCD Parallel Interface where I modified the .c file to change the Write function into the one that handles the 8-bit interface with latch.
I added to the project the emWin files including the colorbar test file as well.
I just downloaded your test project but GUI.h file not found. Can you upload again ?