Hi,

I am trying to draw some pictures on another background (white/black color) on another background picture. However I am not able to make the overlaying picture with its background  being transparent.

The closest result I obtain with :
1. draw background image (ACTS),
2. BLEND_FUNC(ONE, ONE)
3. draw overlaying picrute.

But a problem is that the second picture is only visible with some transparency on dark areas of background image.

Can anyone advise how to achieve it?

Thanks in advance

Hello,

In my recent project I use Riverdi RVT70HSBNWC00 (BT817Q), Arduino Maga and modified old Bridgetek FT800 library.

The problem I am facing now is reading the touch Tag when EVE is feed from the external crystal (HostCommand(FT_CLKEXT) followed by HostCommand(FT_ACTIVE) - w/o freq adjustment).
There is no a such problem when the internal clock is used (HostCommand(FT_CLKINT) followed by HostCommand(FT_ACTIVE) ).

The display behaves as normal, just the touch does not.

Any idea what could be the problem/fix?

Thanks in advance

Thank you for your replies.

I am trying to put it into fast mode. However I have two questions:

1. I try to put into fast mode straight after EVE inits and a check the state of external flash as basic mode. In the manual I can see that this is (probably the only one) command that reads back a result - Command layout:
+0 CMD_FLASHFAST (0xFFFF FF4A)
+4 result
so I build it as (looking at Matrix's code):
  void EVE_FlashFast(void)
  {
    Send_CMD(CMD_FLASHFAST);
    Send_CMD(0);
  }
The manual is not that clear how to execute this and only says: "When the host MCU calls CMD_FLASHFAST".
I tried two ways of sending this command:
- both subcommands transmitted as Host Memory Write (section 4.1.4 in data sheet) format,
- first as write and second as read.

But either way this command causes that EVE crashes, by meaning of REG_CMD_READ gives 4095 (although reading RAM_ERR_REPORT gives only zeros).

2. Does the flash need to be detached, attached back and then put into fast mode? Can it not be put into fast mode straight after initialization (and eventually checked if is in basic mode)?

 

Hi Rudolph,

thanks for your reply.


Maybe calling it a "cold start" is not best description for this problem, but this one came to my mind as first.

I use Riverdi setup (https://riverdi.com/product/rvt70aqffwr00/ + https://riverdi.com/product/arduino-riverdi-tft-shield/) and oryginal arduino mega board.
and their demo sketch:
https://github.com/riverdi/riverdi-eve-arduino
as well as Matrix orbital demo:
https://github.com/MatrixOrbital/Basic-EVE-Demo-Arduino
with mods of
function FT81x_Init:
  wr16(REG_HCYCLE + RAM_REG, 1056L);         // Set H_Cycle to 548
  wr16(REG_HOFFSET + RAM_REG, 46L);       // Set H_Offset to 43
  wr16(REG_HSYNC0 + RAM_REG, 0L);         // Set H_SYNC_0 to 0
  wr16(REG_HSYNC1 + RAM_REG, 10L);         // Set H_SYNC_1 to 41
  wr16(REG_VCYCLE + RAM_REG, 525L);         // Set V_Cycle to 292
  wr16(REG_VOFFSET + RAM_REG, 23L);       // Set V_OFFSET to 12
  wr16(REG_VSYNC0 + RAM_REG, 0L);         // Set V_SYNC_0 to 0
  wr16(REG_VSYNC1 + RAM_REG, 10L);         // Set V_SYNC_1 to 10
  wr8(REG_SWIZZLE + RAM_REG, 0L);        // Set SWIZZLE to 0
  wr8(REG_PCLK_POL + RAM_REG, 1L);      // Set PCLK_POL to 1
  wr16(REG_HSIZE + RAM_REG, 800L);           // Set H_SIZE to 480
  wr16(REG_VSIZE + RAM_REG, 480L);           // Set V_SIZE to 272

and pin defs:
#define EveChipSelect_PIN     10  // PB1
#define EveAudioEnable_PIN    1  // PD1
#define EvePDN_PIN           8  // PB2
#define SDChipSelect_PIN      5  // PD3
#define Button1_PIN           4  // PD5
#define Button2_PIN           3  // PD6
#define Button3_PIN           2  // PD7
#define SDCardDetect_PIN      6  // PD4

and one more demo sketch, but can't find it now...


EDIT:
a strange thing..
using the same code from Riverdi github (#define EVE_3 + #define RTP_43) with different hardware:
oryginal adruino Leonardo + ftf shield + https://riverdi.com/product/ritft43resfr/ gives opposite effect: it does not work after flashing, but works after disconnecting and then reconnecting of USB cable....

I am trying to check your code but it's not that straightforward to make adjustements for pin defs  and LCD type and can't find a good guide what and where to change...
pin def:
CS to D10 would be eve_target.h-> line 1148 -> #define EVE_CS       10
LDC type within eve_config.h -> line 151 -> #define EVE_RVT43H
still not working something else?

I am just a beginner with EVE. Of course I use CMD button.
I was expecting ready to use commands to be the most optimal to use in every respect especially comparing to bitmaps....
I'd say the programming manual is very poor regarding such info (regarding what's more or less efficient way to use), or even most info...

Thank you Rudolph a lot, I will try to use something less resource consuming.
BTW: OPT_FLAT makes buttons using ways less lines.

Maybe it could be an idea for developers to add more OPTs for widgets to make them more fancy or less resource consuming.

Regarding EVE SE the code generated is such overloaded with unnecessary lines for other than FT/BT platforms that cleaning this up takes more time than writing code ourselves. Maybe there could be an option for exporting the code for just "other MCU". That's why I found this app unusable.