Color LCD project

[wilson]

Hi,
I am planning to do some GUI using PIC32 with TFT LCD, anyone have suggestion?
I have found a source with video from
http://www.lelong.com.my/tft-lcd-module ... Sale-P.htm

But it is using STM32. Is PIC32 sufficient to draw LCD?

Thanks for help.

[takao21203]

Sure it is but use a PIC with a larger FLASH- 128K or more.

Because number of instructions = FLASH kbytes/4.

The 80MHz PICs are very fast actually.

[wilson]

Sure it is but use a PIC with a larger FLASH- 128K or more.

Because number of instructions = FLASH kbytes/4.

The 80MHz PICs are very fast actually.

But Stm32F4 series is up to 180MHz my worry is refreshing color LCD will be slow and reduce response. Thanks.

[takao21203]

I would worry about that at all. What do you want to display?

[wilson]

I want to use color lcd to display text that received from Bluetooth, meanwhile, also need to draw a graphics meter to represent angle sensor position, that mean, when angle change, meter will move.

[Brian Griffin]

Do you have the datasheet for the LCD? These LCDs often contain a "Vertical Sync" pulse pin, so you can update the frame (display) by microcontroller everytime the Vertical Sync pin is up.

For a lot more speed, you have to use the DMA (Direct Memory Access) modules in the ARM/PIC32 processors. The DMA streams (moves) blocks of data without CPU intervention into the GPIOs where these will be connected to the data lines for the LCD.

[wilson]

Thanks for your suggestion. I have datasheet, but not familiar with DMA anyway i will try.