FTDI FT800 LCD TFT display + LPC1769 - some problems with graphic commands

lpcware — Wed, 15 Jun 2016 17:18:15 GMT

Content originally posted in LPCWare by teslabox on Wed May 11 13:07:22 MST 2016
Hi guys,

I am dealing with FT800 FTDI LCD TFT 5 inches display.
I run it via SPI0/SSP0 at 10 MHz with my LPCXpresso LPC1769 Rev. C and I am using FT800.h library with mapped memory of FT800
and I run some ANSI C example code from FTDI website for ARM:
- http://www.ftdichip.com/Support/SoftwareExamples/FT800_Projects.htm#ARM
- http://www.ftdichip.com/Support/SoftwareExamples/EVE/AN_312.zip
- http://www.ftdichip.com/Support/Documents/AppNotes/AN_312%20FT800%20Example%20with%20ARM.pdf

I modified a bit ANSI C code from example to run with my LPC1769 C code libraries and I run example proggram - toggling a point on the backgraound.
It works great but I want more... and I try do display some button.

In according to FT800 Proggraming Guide I composed/wrote some C code to display button (just button)
- http://www.ftdichip.com/Support/Documents/ProgramGuides/FT800%20Programmers%20Guide.pdf
but there is something wrong... the display is not running...

My C code for button displaying is shown below:

There is:
- Header of Display list
- First method of button displaying (does not work),
- Second method of button displaying (does not work),
- Displaying the toggle point (works OK),
- Ending of Display list

// HEADER OF DISPLAY LIST START - BEGIN
ft800memWrite32 (RAM_CMD + cmdOffset, (CMD_DLSTART));// Start the display list
cmdOffset = incCMDOffset (cmdOffset, 4);// Update the command pointer

ft800memWrite32 (RAM_CMD + cmdOffset, (DL_CLEAR_RGB | BackgroundColor));// Set the default clear color to black
cmdOffset = incCMDOffset (cmdOffset, 4);// Update the command pointer

ft800memWrite32 (RAM_CMD + cmdOffset, (DL_CLEAR | CLR_COL | CLR_STN | CLR_TAG));// Clear the screen - this and the previous prevent artifacts between lists
// Attributes are the color, stencil and tag buffers
cmdOffset = incCMDOffset (cmdOffset, 4);// Update the command pointer
// HEADER OF DISPLAY LIST START - END

#if (CREATE_BUTTON_METHOD_NUMBER == 0)
// BUTTON - BEGIN
// Command Button
// Address 0-3; 4 bytes
ft800memWrite32 (RAM_CMD + cmdOffset, (CMD_BUTTON));
cmdOffset = incCMDOffset (cmdOffset, 4);// Update the command pointer

// X-coordinate of button top-left, in pixels; Address 4-5; 2 bytes
// Y-coordinate of button top-left, in pixels; Address 6-7; 2 bytes
ft800memWrite32 (RAM_CMD + cmdOffset, ( (100 << 16) | (100) ));
cmdOffset = incCMDOffset (cmdOffset, 4);// Update the command pointer

// Width of button, in pixels;  Address 8-9; 2 byte
// Height of button, in pixels; Address 10-11; 2 bytes
ft800memWrite32 (RAM_CMD + cmdOffset, ( (50 << 16) | (25) ));
cmdOffset = incCMDOffset (cmdOffset, 4);// Update the command pointer

// Font of button;    Address 12-13; 2 bytes
// Options of button; Address 14-15; 2 bytes
//
ft800memWrite32 (RAM_CMD + cmdOffset, ( (31 << 16) | (0) ));
cmdOffset = incCMDOffset (cmdOffset, 4);// Update the command pointer

// Text of button - "OK": "O" + "K" + "NULL"
// Address 16-19; 4 byte
ft800memWrite32 (RAM_CMD + cmdOffset, ( (0x4F << 24) | (0x4B << 16) | (0x00 << 8) | (0x00 << 0)));
cmdOffset = incCMDOffset (cmdOffset, 4);// Update the command pointer
// BUTTON - END
#endif

#if (CREATE_BUTTON_METHOD_NUMBER == 1)
// BUTTON - BEGIN
// Command Button
// Address 0-3; 4 bytes
ft800memWrite32 (RAM_CMD + cmdOffset, (CMD_BUTTON));
cmdOffset = incCMDOffset (cmdOffset, 4);// Update the command pointer

// X-coordinate of button top-left, in pixels
// Address 4-5; 2 bytes
ft800memWrite16 (RAM_CMD + cmdOffset, 100);
cmdOffset = incCMDOffset (cmdOffset, 2);// Update the command pointer

// Y-coordinate of button top-left, in pixels
// Address 6-7; 2 bytes
ft800memWrite16 (RAM_CMD + cmdOffset, 100);
cmdOffset = incCMDOffset (cmdOffset, 2);// Update the command pointer

// Width of button, in pixels
// Address 8-9; 2 byte
ft800memWrite16 (RAM_CMD + cmdOffset, 50);
cmdOffset = incCMDOffset (cmdOffset, 2);// Update the command pointer

// Height of button, in pixels
// Address 10-11; 2 bytes
ft800memWrite16 (RAM_CMD + cmdOffset, 25);
cmdOffset = incCMDOffset (cmdOffset, 2);// Update the command pointer

// Font of button
// Address 12-13; 2 bytes
ft800memWrite16 (RAM_CMD + cmdOffset, 31);
cmdOffset = incCMDOffset (cmdOffset, 2);// Update the command pointer

// Options of button
// Address 14-15; 2 bytes
ft800memWrite16 (RAM_CMD + cmdOffset, 0);
cmdOffset = incCMDOffset (cmdOffset, 2);// Update the command pointer

// Text of button - "OK": "O"
// Address 16; 1 byte
ft800memWrite8 (RAM_CMD + cmdOffset, 0x4F);
cmdOffset = incCMDOffset (cmdOffset, 1);// Update the command pointer

// Text of button - "OK": "K"
// Address 17; 1 byte
ft800memWrite8 (RAM_CMD + cmdOffset, 0x4B);
cmdOffset = incCMDOffset (cmdOffset, 1);// Update the command pointer

// String terminated with null character, i.e. '\0'
ft800memWrite8 (RAM_CMD + cmdOffset, 0x00);
cmdOffset = incCMDOffset (cmdOffset, 1);// Update the command pointer
// BUTTON - END
#endif

#if (CREATE_TOGGLE_POINT == 1)
// DRAW POINT - BEGIN
ft800memWrite32 (RAM_CMD + cmdOffset, (DL_COLOR_RGB | color));// Set the color of the following item(s) - toggle red/white from above
cmdOffset = incCMDOffset (cmdOffset, 4);// Update the command pointer

ft800memWrite32 (RAM_CMD + cmdOffset, (DL_POINT_SIZE | point_size));// Select the size of the dot to draw
cmdOffset = incCMDOffset (cmdOffset, 4);// Update the command pointer

ft800memWrite32 (RAM_CMD + cmdOffset, (DL_BEGIN | FTPOINTS));// Indicate to draw a point (dot)
cmdOffset = incCMDOffset (cmdOffset, 4);// Update the command pointer

ft800memWrite32 (RAM_CMD + cmdOffset, (DL_VERTEX2F | (point_x << 15) | point_y));// Set the point center location
cmdOffset = incCMDOffset (cmdOffset, 4);// Update the command pointer

ft800memWrite32 (RAM_CMD + cmdOffset, (DL_END));// End the point
cmdOffset = incCMDOffset (cmdOffset, 4);// Update the command pointer
// DRAW POINT - END
#endif


// ENDING OF DISPLAY LIST START - BEGIN
ft800memWrite32 (RAM_CMD + cmdOffset, (DL_DISPLAY));// Instruct the graphics processor to show the list
cmdOffset = incCMDOffset(cmdOffset, 4);// Update the command pointer

ft800memWrite32 (RAM_CMD + cmdOffset, (CMD_SWAP));// Make this list active
cmdOffset = incCMDOffset (cmdOffset, 4);// Update the command pointer

ft800memWrite16 (REG_CMD_WRITE, (cmdOffset));// Update the ring buffer pointer so the graphics processor starts executing
// ENDING OF DISPLAY LIST START - END

//////////////////////////////////////////////////////////////////////////////////////
//////////////////////// DISPLAY LIST - END //////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////

In the attachements there are full ANSI C code files.

I will be very gratefull for support and help in this case.

Original Attachment has been moved to: main_24.c.zip

Original Attachment has been moved to: ssp_0.h.zip

Original Attachment has been moved to: FT800.h.zip

Original Attachment has been moved to: ssp_1.c.zip

Re: FTDI FT800 LCD TFT display + LPC1769 - some problems with graphic commands

lpcware — Sun, 19 Jun 2016 01:10:49 GMT

bump

Re: FTDI FT800 LCD TFT display + LPC1769 - some problems with graphic commands

floriangermé — Wed, 29 May 2019 08:17:15 GMT

Hi,

Have you solved your problem?

I am interested in about but with the i.MX RT1020 EVK and ft800 or bt 815

topic Re: FTDI FT800 LCD TFT display + LPC1769 - some problems with graphic commands in LPC Microcontrollers

FTDI FT800 LCD TFT display + LPC1769 - some problems with graphic commands

Re: FTDI FT800 LCD TFT display + LPC1769 - some problems with graphic commands

Re: FTDI FT800 LCD TFT display + LPC1769 - some problems with graphic commands