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Messages - vdc

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31
Discussion - EVE / EVE4 1024 x 600 resolution with EVE Asset Builder Image Convert
« on: March 18, 2021, 06:18:05 PM »
Hi all.

I just got a new EVE4 from Riverdi (RVT70HSBNWC00-B) with 1024 x 600 resolution.

I tried to convert an image to RGB565 bitmap with EVE Asset Builder and I got message that the size of the .raw file from the 1024x600 images is exceeds 1MB. I guess because the RAM_G only have 1MB.

Is there any possible way to convert 1024x600 image file to bitmap that less than 1MB so it can be able to use Gpu_CoCmd_FlashRead to display an image from the flash with this resolution.

I think about other format like PALETTED565 but I found that the RGB565 give the best resolution on my project.

RGB565 is good because it easy to run on MCU code

---------------------------------------------------
Screen_PreCode();

Gpu_CoCmd_FlashRead(phost, RAM_G, 4096, 768000);
Gpu_CoCmd_SetBitmap(phost, RAM_G, RGB565, 800, 480);
App_WrCoCmd_Buffer(phost, BEGIN(BITMAPS));
App_WrCoCmd_Buffer(phost, VERTEX2II(0, 0, 0, 0));
App_WrCoCmd_Buffer(phost, END());

Screen_PostCode();
---------------------------------------------------

This code work perfect for 800x480 since the image I converted to bitmap is less than 1MB.

Any suggestion for 1024x600 resolution? I do see Riverdi also released an 1280x800 resolution on EVE4.



Best regards,

32
Discussion - EVE / Re: BT816 Read CRC Flash
« on: February 11, 2021, 05:56:10 PM »
Hi Rudolph,

You know what is the best way to get the CRC-32 for the entire Flash?

Currently, I can only read 1 MB (1048576 bytes) from Attach Flash to the RAM_G and do the MEMCRC from the RAM_G. And then I use the MEMCRC to get the CRC-32 from the RAM_G, but this only give me the CRC-32 from 1 MB of the Flash. I'm having 16MB now, so I will need to read it 16 time and get 16 difference CRC-32 values.

I use the HxD to calculate the whole .bin file and get one CRC-32 value for the .bin file that will be download to the attach flash.

Is there any other way to add all the CRC-32 that I got from MEMCRC so that final value will equal to the CRC-32 from .bin file?

I have been searching on google but no success.

I'm thinking about reading every bytes from RAM_G and manual do the CRC-32 but I think this will take too long since I can only read 32-bits at one with rd32 command from MCU.


Here is my code from Tiva C
=====================
    Gpu_CoCmd_FlashRead(phost, RAM_G, 0, 1048576);  // Read 1MB from Flash to RAM_G
    while(EVE_busy());  // Wait until transfer is complete

    cmdoffset = Gpu_Hal_Rd16(phost, REG_CMD_WRITE);
    Gpu_CoCmd_MemCrc(phost, RAM_G, 1048576, 0);
    while(EVE_busy()); //wait till the command is complete

    read = Gpu_Hal_Rd32(phost, RAM_CMD + cmdoffset + 12); //RAM_CMD
    UARTprintf("CRC: 0x%08x\r\n", read);
======================



Best regards,

33
Discussion - EVE / Re: BT816 Read CRC Flash
« on: February 10, 2021, 02:06:17 PM »
Hi Rudolph,

I just find out that I don't have the EVE_busy function that why the first byte I read I incorrect.

However, I have one question. I look at your EVE_busy function, I see that you use REG_CMDB_SPACE for check the busy.

Why you use that?

I'm using the Gpu libary from BRT which they have a function call Gpu_Hal_WaitCmdfifo_empty

==================
void Gpu_Hal_WaitCmdfifo_empty(Gpu_Hal_Context_t *host)
{
    while(Gpu_Hal_Rd16(host,REG_CMD_READ) != Gpu_Hal_Rd16(host,REG_CMD_WRITE));

    host->cmd_fifo_wp = Gpu_Hal_Rd16(host,REG_CMD_WRITE); // update fifo to 0
}
===================

This also will check if the EVE is busy.

I just wonder why you use difference way to check the EVE busy by REG_CMDB_SPACE  and REG_COPRO_PATCH_DTR?

Best regards,


34
Discussion - EVE / Re: BT816 Read CRC Flash
« on: February 05, 2021, 02:42:55 PM »
Hi  Rudolph,

Thank you for the reply.

based on your code, I have able to read the data from the Flash. Just somehow the first byte I read is 0xFF

My bin file that I create from the Asset Builder that contain the .blob and .raw file.
unified.blob                             : 0    : 4096
B_colorpulse_j84cnclv_800x480_RGB565.raw : 4096 : 768000

I use the Hex Editor to read the HEX value from the bin file.
0x00: 70 df fb 92 1e 01 00 00 e8 a6 30 00 18 01 10 00
0x1F: 00 00 f8 da 4a a7 2a ff ff ff ff ff ff ff ff ff

Code from my MCU

===============================
    Gpu_CoCmd_FlashRead(phost, 0, 0, 4*4);  // read first 16 bytes from the Flash

    for(i = 0; i < 20; i++) {
        // read 1 byte from RAM_G
        read = Gpu_Hal_Rd8(phost, RAM_G + i);
        UARTprintf("%d: 0x%02x\r\n", i, read);
    }
===============================

And I got

0: 0xff
1: 0xdf
2: 0xfb
3: 0x92
4: 0x1e
5: 0x01
6: 0x00
7: 0x00
8: 0xe8
9: 0xa6
10: 0x30
11: 0x00
12: 0x18
13: 0x01
14: 0x10
15: 0x00
16: 0xff
17: 0xff
18: 0xff
19: 0xff


It is correct from the 2nd byte. But I don't know why the first byte is 0xFF, it should be 0x70. Not sure where I did wrong.

Also, for the MEMCRC command. It say that it can computes a block of memory. I use the winbond flash. And 1 block = 64Kb.

EVE_cmd_memcrc(0x1E0000,65535);  ---> will it do the job?

Thank you so much.

35
Discussion - EVE / BT816 Read CRC Flash
« on: February 03, 2021, 07:29:16 PM »
Hi all,

Is there any way that I can read the CheckSum from the Flash on EVE3 module?

Right now, I'm storing all the image, custom font on the FLash on EVE3 module. But I need to find a way to verify that the data on the flash is correct version with my MCU program. Otherwise, it will display wrong information that I want.

Best regards,

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