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Topics - b2mishra

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Discussion - EVE / Updating basic text on screen while Erasing Flash

« on: June 03, 2020, 02:41:03 PM »

Display: Matrix Orbital EVE3

I am trying to update the Flash on the display from my MCU.
Erasing and Writing seem to work fine.

My problem is, it is a 16MB flash, and takes more than 1 minute to erase.
While erasing, I can not update anything on the screen to show that Erasing is in progress.
Is there a way to speed up this process, or do erases in smaller blocks instead of a full flash erase, so that I can update basic text on the display?

Discussion - EVE / Displays with EVE3

« on: January 13, 2020, 09:38:51 PM »

I am looking for a list of display manufacturers using BT815/6. I found Riverdi, and Matrix Orbital.
Are there any other manufacturers?

Discussion - EVE / Displaying Video

« on: November 04, 2019, 04:27:16 PM »

HI,

I am trying to display a small video as part of my splash screen. I used EVE Asset Builder to convert my video, and loaded it in to flash.
The sample C code generated looks a little confusing.
Do I need anything other than the following code to display the video?
I think I am missing some initialization.

Code: [Select]

/* Switch Flash to FULL Mode */
	Gpu_CoCmd_FlashHelper_SwitchFullMode(&host);
	Gpu_Hal_Wr32(phost, REG_PLAY_CONTROL, 1);
	Gpu_CoCmd_Dlstart(phost);
	App_WrCoCmd_Buffer(phost, CLEAR(1, 1, 1));
	App_WrCoCmd_Buffer(phost, COLOR_RGB(255, 255, 255));

	Gpu_CoCmd_FlashSource(phost, ADDR_VIDEO);
	App_WrCoCmd_Buffer(phost, CMD_PLAYVIDEO);
	App_WrCoCmd_Buffer(phost, OPT_FLASH | OPT_SOUND | OPT_NOTEAR);
	App_Flush_Co_Buffer(phost);
	Gpu_Hal_WaitCmdfifo_empty(phost);

Discussion - EVE / EVE Asset Builder Image Converter Sample Code

« on: September 18, 2019, 01:58:36 PM »

The sample code generated by EVE Asset Builder after converting an image, works only for ASTC format. It does not work with other formats.
As per the programming guide (Section 4.12):

Quote

However, only bitmap data of ASTC specific format can be rendered directly from flash memory. For the bitmap data of any non-ASTC specific format in flash memory, CMD_FLASHREAD is required to copy the data from flash into RAM_G so that EVE can render it correctly.