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Topics - T.Pierret

Pages: [1]
1
Discussion - EVE / Image corruption
« on: June 23, 2020, 08:36:57 AM »
Hi,

I wrote a small application for tests of an EVE-controlled screen. The result was not too bad till I added a splash screen as a JPEG image. Afterwards all the icons just changed to garbage.
I'm doing something wrong !
Here is the canvas :
1°/ Load the JPEG image for the splash screen
Code: [Select]
uint16_t sentSize = 0u, len;
const uint16_t MaxLen = 512u;

cmdOffset = ft_wait4CoproReady()
ft_write32( RAM_CMD + cmdOffset, CMD_LOADIMAGE );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, RAM_G );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, OPT_NODL );
ft_incCmdOffset( 4u );
while ( sentSize < splash.data_size )
{
  len = splash.data_size - sentSize;
  if ( len > MaxLen ) len = MaxLen;
  /* Wait for space to write the next chunk */
  while ( !ft_checkFreeSpaceInFifo( len ) );
  ft_writeMem( RAM_CMD + cmdOffset, &splash.data[sentSize], len );
  ft_incCmdOffset( len );
  sentSize += len;
  ft_write16( REG_CMD_WRITE, cmdOffset );
}
2°/ Display the JPEG image
Code: [Select]
cmdOffset = ft_wait4CoproReady()
ft_write32( RAM_CMD + cmdOffset, CMD_DLSTART );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, SAVE_CONTEXT() );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, CMD_SETBITMAP );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, RAM_G );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset,
                    (((uint32_t) splash.width << 16) | ((uint32_t) RGB565 & 0xFFFFU)) );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, (uint32_t) splash.height );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, BEGIN(BITMAPS) );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, VERTEX2II(0, 0, 0, 0) );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, END() );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, RESTORE_CONTEXT() );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, DISPLAY() );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, CMD_SWAP );
ft_incCmdOffset( 4u );
ft_write16( REG_CMD_WRITE, cmdOffset );
3°/ Load the icon (compressed ARGB2 image):
Code: [Select]
address = RAM_G + ( (uint32_t) splash.width * (uint32_t) splash.height * 2U );
cmdOffset = ft_wait4CoproReady()
ft_write32( RAM_CMD + cmdOffset, CMD_INFLATE );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, address );
ft_incCmdOffset( 4u );
while ( sentSize < icon.data_size )
{
  len = icon.data_size - sentSize;
  if ( len > MaxLen ) len = MaxLen;
  /* Wait for space to write the next chunk */
  while ( !ft_checkFreeSpaceInFifo( len ) );
  ft_writeMem( RAM_CMD + cmdOffset, &icon.data[sentSize], len );
  ft_incCmdOffset( len );
  sentSize += len;
  ft_write16( REG_CMD_WRITE, cmdOffset );
}
ft_wait4CoproReady();
ft_write32( RAM_CMD + cmdOffset, CMD_GETPTR );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, 0U );
ft_incCmdOffset( 4u );
ft_write16( REG_CMD_WRITE, cmdOffset );
ft_read32( RAM_CMD + cmdOffset - 4U, &address);
4°/ Display the icon:
Code: [Select]
ft_wait4CoproReady();
ft_write32( RAM_CMD + cmdOffset, CMD_DLSTART );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, CLEAR_COLOR_RGB(10, 10, 60) );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, CLEAR(1 ,1 ,1) );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, SAVE_CONTEXT() );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, BITMAP_SOURCE( address ) );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, BITMAP_LAYOUT( ARGB2, icon.stride, icon.height ) );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, BITMAP_SIZE( NEAREST, BORDER, BORDER, icon.width, icon.height ) );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, BEGIN( BITMAPS ) );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, VERTEX2F( x * 16, y * 16 ) );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, END() );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, DISPLAY() );
ft_incCmdOffset( 4u );
ft_write32( RAM_CMD + cmdOffset, CMD_SWAP );
ft_incCmdOffset( 4u );
ft_write16( REG_CMD_WRITE, cmdOffset );
If the step 2 (display splash) is not executed, the icon is correctly display. If displayed, the icon is changed into garbage.

Could someone explain this behaviour ?

Thanks in advance.
Regards.

2
Discussion - EVE / Tag value of an area with content
« on: June 17, 2020, 08:18:19 AM »
Hi,
In order to create a "slidable" area with texts and images content, I first drew the content:
Code: [Select]
CLEAR_COLOR_RGB()
CLEAR(1 ,1 ,1)
CLEAR_TAG( 0 )
...
BITMAP_SOURCE()
BITMAP_LAYOUT()
BITMAP_SIZE()
BEGIN( BITMAPS )
...
CMD_TEXT()
...
Then I defined the area where the touch shall be used for scrolling :
Code: [Select]
COLOR_MASK(0 ,0 ,0 ,0)
TAG( value )
BEGIN(RECTS)
...
Touching the scrolling area, I expected to get the defined tag value. However, if the touch happens on a text or an image, the tag value 0 is obtained.
Is there a way to not get the tag value 0 and obtain the tag of the content area ?

Thanks in advance for any support.
Best regards

3
Discussion - EVE / Capacitive touch screen calibration
« on: June 10, 2020, 04:22:24 PM »
Hi,

Am I wrong if I say that the Capacitive Touch Engine does not need a calibration in extended mode ?

Currently, we only own and tested resistive touch screens. The calibration process appears as a big constraint for a "mass" production.

Thanks in advance for any answer.

Regards.

4
Discussion - EVE / How to inflate large image
« on: June 05, 2020, 04:41:38 PM »
Hi,

I would like to inflate a compressed image (ARGB1555) larger than the circular buffer. Is there a way to do that ?

Thanks in advance for any support.

Regards.
Thierry Pierret

5
New Member Introductions / New to EVE2 controller
« on: June 05, 2020, 04:25:32 PM »
Hi,

I just connected to the forum, so here is a small introduction.

I'm currently evaluating the EVE2 controller abilities for future new products of my company. The test platform is made of a STM32 MCU development boards and some NewHaven boards.
The race is still opened, but the EVE2-based screen sounds to be a winning choice.

Regards.

Pages: [1]