AN_262 FT_App_FtClocks

APPLICATION NOTE
AN_262
FT_APP_FT_CLOCKS
Version 1.1
Document Reference No.: FT_000907
Issue Date: 2013-11-01
This document is to introduce the FT Clock Demo Application. The objective of the Demo
Application is to enable users to become familiar with the usage of the FT800, the design flow, and
display list used to design the desired graphical user interface or visual effect.
Use of FTDI devices in life support and/or safety applications is entirely at the user’s risk, and the
user agrees to defend, indemnify and hold FTDI harmless from any and all damages, claims, suits
or expense resulting from such use.
Future Technology Devices International Limited (FTDI)
Unit 1, 2 Seaward Place, Glasgow G41 1HH, United Kingdom
Tel.: +44 (0) 141 429 2777 Fax: + 44 (0) 141 429 2758
Web Site: http://ftdichip.com
Copyright © 2011 Future Technology Devices International Limited
Application Note
AN_262 FT_App_FT_Clocks
Version 1.1
Document Reference No.: FT_000907 Clearance No.: FTDI# 357
Table of Contents
1
2
Introduction ................................................................................................................ 3
1.1
Overview .............................................................................................................. 3
1.2
Scope .................................................................................................................. 3
1.3
Wall Background image .......................................................................................... 4
1.4
Clock background skin ........................................................................................... 4
1.5
Date and time ....................................................................................................... 4
1.6
Audio for changing hour ......................................................................................... 4
1.7
Without SD card .................................................................................................... 5
Application Flow ........................................................................................................... 6
2.1
3
4
Flowchart ............................................................................................................. 7
Description .................................................................................................................. 8
3.1
Intialization ........................................................................................................ 11
3.2
Functionality ....................................................................................................... 13
3.2.1
Date Setting ................................................................................................ 14
3.2.2
Time Setting ................................................................................................ 14
3.2.3
Clock Skin ................................................................................................... 14
3.2.4
Wall Background .......................................................................................... 14
Contact Information ................................................................................................... 15
Appendix A– References .................................................................................................... 16
Document References .................................................................................................... 16
Acronyms and Abbreviations ........................................................................................... 16
Appendix B – List of Tables & Figures .................................................................................. 17
List of Figures ............................................................................................................... 17
Appendix C– Revision History ............................................................................................. 18
2
Copyright © 2013 Future Technology Devices International Limited
Application Note
AN_262 FT_App_FT_Clocks
Version 1.1
Document Reference No.: FT_000907 Clearance No.: FTDI# 357
1 Introduction
This design example demonstrates an interactive clock using lines, points, and Jpeg decode plus
audio playback on an FT800 platform.
In the FT_clock application, a swiss-clock graphic with major and minor segments and three clock
hands is the desired graphic. Further alternatives for the back-ground for the clock face will be
shown (plain gradient face or a face generated from a jpeg image in the case where memory
storage is readily available).The clock time can be adjusted by touching the minutes hand and
using rotary movements. FT clock is an application that demonstrates the use of FT800 graphical
primitives to construct a more complex image. This application utilizes all the features of the
FT800 i.e. touch, audio and display. Note that this clock is distinct in nature and not the clock
widget that is available in the FT800 widget library. In the FT Clock, three processes, audio
playback, image decoding and display list construction are handled. Loading of image and audio,
along with the construction of the display list will be as follow:



Image uploading : Via the CMD FIFO by Load image command
Display list : directly in DL RAM
Audio play : via SPI to GRAM
1.1 Overview
The document will provide information on the image creation, tagging of audio and touch
capabilities, and the structure of displays lists. Further, the application note will outline the general
steps of the design flow, including display list creation, and integrating the display list with the
system host micro-controller.
This document should be read in conjunction with the source code which can be found in section 4
or at:
http://www.ftdichip.com/Support/SoftwareExamples/FT800_Projects.htm
1.2 Scope
This document can be used as a guide by designers to develop GUI applications by using FT800
with any MCU via SPI or I2C. Note detailed documentation is available on
www.ftdichip.com/EVE.htm including:




FT800 datasheet
Programming Guide covering EVE command language
AN_240 FT800 From the Ground Up
AN_245 VM800CB_SampleApp_PC_Introduction - covering detailed design flow with a PC
and USB to SPI bridge cable

AN_246 VM800CB_SampleApp_Arduino_Introduction – covering detailed design flow in an
Arduino platform

AN_252 FT800 Audio Primer
3
Copyright © 2013 Future Technology Devices International Limited
Application Note
AN_262 FT_App_FT_Clocks
Version 1.1
Document Reference No.: FT_000907 Clearance No.: FTDI# 357
2 Display Requirements
This section describes some of the key components of the design.
2.1 Wall Background image
In the FT Clock application, the wall background is a JPEG image. There are 10 JPEG images
(bgimg0.jpg – bgimg9.jpg) which may be loaded as the application cycles round. The actual clock
is overlaid to the coordinates and size matching the clock in the JPEG.
To change the background displayed touch the display in the background area. Two bitmap
handles are used to assist swapping the images.
2.2 Clock face
The clock face (skin) is generated with FT800 primitives such as LINES and FTPOINTS as opposed
to the clock widget, allowing for customised hands such as those on a Swiss clock to be generated.
The face can be changed by tapping on the clock. This will change the colour of the face
background and the hands.
2.3 Date and time
Time in the application is initialised to System time from the host controller. The date, month and
year can be adjusted by touching the date display. Adjustment in date, month and year can be
done only for the first two skins.
Time adjustment can be done using the tracker for the hour needle and the minute needle is
adjusted accordingly. As the tracker is synced with System time, the second hand movement
changes accordingly.
2.4 Audio for changing hour
In this application, the time change per hour is indicated by the recorded voice message. When
the time changes past the hour, the recorded voice message reports the hour displayed. The audio
files are uLAW encoded from a PC application such as aud_cvt from the FTDI utilities web page.
There are 12 files (1.ULW – 12.ULW) – one for each hour.
4
Copyright © 2013 Future Technology Devices International Limited
Application Note
AN_262 FT_App_FT_Clocks
Version 1.1
Document Reference No.: FT_000907 Clearance No.: FTDI# 357
2.5 Without SD card
If the SD Card is not present, the system can show only two wall backgrounds, and the audio alert
is disabled.
NOTE: If using an FTDI MPSSE cable then the SD card is not required.
5
Copyright © 2013 Future Technology Devices International Limited
Application Note
AN_262 FT_App_FT_Clocks
Version 1.1
Document Reference No.: FT_000907 Clearance No.: FTDI# 357
3
Design Flow
Every EVE design follows the same basic principles as highlighted in Figure 3.1.
The active list and the edited list which are continually swapped to update the display.Select and
configure your host port for controlling the FT800 then wake the device before configuring the
display. The creative part then revolves around the generation of the display list. There will be
two lists. The active list and the updated/next list are continually swapped to render the display.
Note, header files map the pseudo code of the design file of the display list to the FT800
instruction set, which is sent as the data of the SPI (or I²C) packet (typically <1KB). As a result,
with EVE’s object oriented approach, the FT800 is operating as an SPI peripheral while providing
full display, audio, and touch capabilities.
Hardware
Select MCU
Select Display,
Audio & Touch
SPI or I2C
GPIO for PD_n
Interrupt Input
Size = WQVGA, QVGA, up to 512 x 512
Resistive Touch
Audio Amplifier
Software
Configure MCU
Interface
SPI Mode Zero -or- I2C Address
Set Host MCU SPI Speed to 10MHz maximum
Little Endian Data Format
Wake-up
FT800
Toggle PD_n low for 20ms min., then high
Write 0x00, 0x00, 0x00 to wake FT800
Write 0x44, 0x00, 0x00 to select Ext Clock
Write 0x62, 0x00, 0x00 to select 48MHz
Host MCU SPI Speed can now go up to 30MHz
REG_PCLK = zero until after display parameters are set
Configure
Display
Set Screen Registers
Vertical – REG_VCYCLE, REG_VSIZE, REG_VSYNC0/1, REG_VOFFSET
Horizontal – REG_HCYCLE, REG_HSIZE, REG_HSYNC0/1, REG_HOFFSET
Configure
Touch and
Audio
Set Touch Registers
REG_TOUCH_MODE, REG_TOUCH_RZTHRESH, Others if necessary
Set Audio Register
REG_VOL_SOUND = zero
Write Initial
Display List &
Enable Display
Write
Application
Display List
Swap Display
LIsts
CLEAR_COLOUR_RGB(0,0,0)
CLEAR(1,1,1)
DISPLAY
SWAP_LIST
REG_PWM_DUTY – brightness, PWM_HZ, frequency
REG_GPIO – bit 7 = 1 – DISP
REG_PCLK = LCD dot/pixel clock frequency
CLEAR_COLOUR_RGB(0,0,0)
CLEAR(1,1,1)
** APPLICATION DATA **
DISPLAY
SWAP_LIST
Figure 3.1 Generic EVE Design Flow
6
Copyright © 2013 Future Technology Devices International Limited
Application Note
AN_262 FT_App_FT_Clocks
Version 1.1
Document Reference No.: FT_000907 Clearance No.: FTDI# 357
3.1 FtClocks Flowchart
The flow chart below is specific to the FtClocks application. The application uses internal Graphic
RAM and SD card storage for storing bitmaps and audio files that may be seen and heard as the
application plays.
Start
Load the Image to
GRAM
Compute
background
gradients
INTIALIZATION
Set the Bitmap
Properties
J1 Busy?
YES
NO
SD CARD?
NO
YES
Alert?
Image
Loaded?
YES
NO
Play the Recorded
Voice
Load Image to
GRAM
YES
Read the Touch
Clock Region?
Construct the
Displaylist
NO
Background?
NO
DATE Region?
YES
YES
YES
Change the Clock
Skin
Change the
Background and
Change the Track
region
DATE Setting
NO
Tracker?
Set the Time
All Widgets/primitives Direct to DL RAM
Figure 3.2 Flowchart
7
Copyright © 2013 Future Technology Devices International Limited
Application Note
AN_262 FT_App_FT_Clocks
Version 1.1
Document Reference No.: FT_000907 Clearance No.: FTDI# 357
4 Description of the Functional Blocks
4.1 System Initialisation
Configuration of the SPI master port is unique to each controller – different registers etc, but all
will require data to be sent Most Significant Bit (MSB) first with a little endian format.
The function labelled Ft_BootupConfig in this project is generic to all applications and will start by
toggling the FT800 PD# pin to perform a power cycle.
/* Do a power cycle for safer side */
Ft_Gpu_Hal_Powercycle(phost,FT_TRUE);
Ft_Gpu_Hal_Rd16(phost,RAM_G);
/* Set the clk to external clock */
Ft_Gpu_HostCommand(phost,FT_GPU_EXTERNAL_OSC);
Ft_Gpu_Hal_Sleep(10);
/* Switch PLL output to 48MHz */
Ft_Gpu_HostCommand(phost,FT_GPU_PLL_48M);
Ft_Gpu_Hal_Sleep(10);
/* Do a core reset for safer side */
Ft_Gpu_HostCommand(phost,FT_GPU_CORE_RESET);
/* Access address 0 to wake up the FT800 */
Ft_Gpu_HostCommand(phost,FT_GPU_ACTIVE_M);
The internal PLL is then given a prompt by setting the clock register and PLL to 48 MHz.
Note 36MHz is possible but will have a knock on effect for the display timing parameters.
A software reset of the core is performed followed by a dummy read to address 0 to complete the
wake up sequence.
The FT800 GPIO lines are also controlled by writing to registers:
Ft_Gpu_Hal_Wr8(phost, REG_GPIO_DIR,0x80 | Ft_Gpu_Hal_Rd8(phost,REG_GPIO_DIR));
Ft_Gpu_Hal_Wr8(phost, REG_GPIO,0x080 | Ft_Gpu_Hal_Rd8(phost,REG_GPIO));
And these allow the display to be enabled.
To confirm the FT800 is awake and ready to start accepting display list information the identity
register is read in a loop until it reports back 0x7C. I will always be 0x7C if everything is awake
and functioning correctly.
ft_uint8_t chipid;
//Read Register ID to check if FT800 is ready.
chipid = Ft_Gpu_Hal_Rd8(phost, REG_ID);
while(chipid != 0x7C)
chipid = Ft_Gpu_Hal_Rd8(phost, REG_ID);
Once the FT800 is awake the display may be configured through 13 register writes according to its
resolution. Resolution and timing data should be available in the display datasheet.
8
Copyright © 2013 Future Technology Devices International Limited
Application Note
AN_262 FT_App_FT_Clocks
Version 1.1
Document Reference No.: FT_000907 Clearance No.: FTDI# 357
Ft_Gpu_Hal_Wr16(phost, REG_HCYCLE, FT_DispHCycle);
Ft_Gpu_Hal_Wr16(phost, REG_HOFFSET, FT_DispHOffset);
Ft_Gpu_Hal_Wr16(phost, REG_HSYNC0, FT_DispHSync0);
Ft_Gpu_Hal_Wr16(phost, REG_HSYNC1, FT_DispHSync1);
Ft_Gpu_Hal_Wr16(phost, REG_VCYCLE, FT_DispVCycle);
Ft_Gpu_Hal_Wr16(phost, REG_VOFFSET, FT_DispVOffset);
Ft_Gpu_Hal_Wr16(phost, REG_VSYNC0, FT_DispVSync0);
Ft_Gpu_Hal_Wr16(phost, REG_VSYNC1, FT_DispVSync1);
Ft_Gpu_Hal_Wr8(phost, REG_SWIZZLE, FT_DispSwizzle);
Ft_Gpu_Hal_Wr8(phost, REG_PCLK_POL, FT_DispPCLKPol);
Ft_Gpu_Hal_Wr8(phost, REG_PCLK,FT_DispPCLK);//after this display is visible on the
LCD
Ft_Gpu_Hal_Wr16(phost, REG_HSIZE, FT_DispWidth);
Ft_Gpu_Hal_Wr16(phost, REG_VSIZE, FT_DispHeight);
To complete the configuration the touch controller should also be calibrated
/* Touch configuration - configure the resistance value to 1200 - this value is
specific to customer requirement and derived by experiment */
Ft_Gpu_Hal_Wr16(phost, REG_TOUCH_RZTHRESH,1200);
Ft_Gpu_Hal_Wr8(phost, REG_GPIO_DIR,0xff);
Ft_Gpu_Hal_Wr8(phost, REG_GPIO,0x0ff);
An optional step is present in this code to clear the screen so that no artefacts from bootup are
displayed.
/*It is optional to clear the screen here*/
Ft_Gpu_Hal_WrMem(phost, RAM_DL,(ft_uint8_t
*)FT_DLCODE_BOOTUP,sizeof(FT_DLCODE_BOOTUP));
Ft_Gpu_Hal_Wr8(phost, REG_DLSWAP,DLSWAP_FRAME);
4.2 Info()
This is a largely informational section of code and it starts by synchronising the physical xy
coordinates of the displays touch layer with the displays visual layer.
A display list is started and cleared:
Ft_Gpu_CoCmd_Dlstart(phost);
Ft_App_WrCoCmd_Buffer(phost,CLEAR(1,1,1));
Ft_App_WrCoCmd_Buffer(phost,COLOR_RGB(255,255,255));
A text instruction is printed on the display followed by the call to the internal calibrate function:
Ft_Gpu_CoCmd_Text(phost,FT_DispWidth/2,FT_DispHeight/2,26,OPT_CENTERX|OPT_CENTERY,"
Please tap on a dot");
Ft_Gpu_CoCmd_Calibrate(phost,0);
The display list is then terminated and swapped to allow the changes to take effect.
Ft_App_WrCoCmd_Buffer(phost,DISPLAY());
Ft_Gpu_CoCmd_Swap(phost);
Ft_App_Flush_Co_Buffer(phost);
Ft_Gpu_Hal_WaitCmdfifo_empty(phost);
Next up in the Info() function is the FTDI logo playback:
9
Copyright © 2013 Future Technology Devices International Limited
Application Note
AN_262 FT_App_FT_Clocks
Version 1.1
Document Reference No.: FT_000907 Clearance No.: FTDI# 357
Ft_Gpu_CoCmd_Logo(phost);
Ft_App_Flush_Co_Buffer(phost);
Ft_Gpu_Hal_WaitCmdfifo_empty(phost);
while(0!=Ft_Gpu_Hal_Rd16(phost,REG_CMD_READ));
dloffset = Ft_Gpu_Hal_Rd16(phost,REG_CMD_DL);
dloffset -=4;
Ft_Gpu_Hal_WrCmd32(phost,CMD_MEMCPY);
Ft_Gpu_Hal_WrCmd32(phost,100000L);
Ft_Gpu_Hal_WrCmd32(phost,RAM_DL);
Ft_Gpu_Hal_WrCmd32(phost,dloffset);
play_setup();
A composite image with the logo and a start arrow is then displayed to allow the user to start the
main application
do
{
Ft_Gpu_CoCmd_Dlstart(phost);
Ft_Gpu_CoCmd_Append(phost,100000L,dloffset);
Ft_App_WrCoCmd_Buffer(phost,BITMAP_TRANSFORM_A(256));
Ft_App_WrCoCmd_Buffer(phost,BITMAP_TRANSFORM_A(256));
Ft_App_WrCoCmd_Buffer(phost,BITMAP_TRANSFORM_B(0));
Ft_App_WrCoCmd_Buffer(phost,BITMAP_TRANSFORM_C(0));
Ft_App_WrCoCmd_Buffer(phost,BITMAP_TRANSFORM_D(0));
Ft_App_WrCoCmd_Buffer(phost,BITMAP_TRANSFORM_E(256));
Ft_App_WrCoCmd_Buffer(phost,BITMAP_TRANSFORM_F(0));
Ft_App_WrCoCmd_Buffer(phost,SAVE_CONTEXT());
Ft_App_WrCoCmd_Buffer(phost,COLOR_RGB(219,180,150));
Ft_App_WrCoCmd_Buffer(phost,COLOR_A(220));
Ft_App_WrCoCmd_Buffer(phost,BEGIN(EDGE_STRIP_A));
Ft_App_WrCoCmd_Buffer(phost,VERTEX2F(0,FT_DispHeight*16));
Ft_App_WrCoCmd_Buffer(phost,VERTEX2F(FT_DispWidth*16,FT_DispHeight*16));
Ft_App_WrCoCmd_Buffer(phost,COLOR_A(255));
Ft_App_WrCoCmd_Buffer(phost,RESTORE_CONTEXT());
Ft_App_WrCoCmd_Buffer(phost,COLOR_RGB(0,0,0));
// INFORMATION
Ft_Gpu_CoCmd_Text(phost,FT_DispWidth/2,20,28,OPT_CENTERX|OPT_CENTERY,info[0]);
Ft_Gpu_CoCmd_Text(phost,FT_DispWidth/2,60,26,OPT_CENTERX|OPT_CENTERY,info[1]);
Ft_Gpu_CoCmd_Text(phost,FT_DispWidth/2,90,26,OPT_CENTERX|OPT_CENTERY,info[2]);
Ft_Gpu_CoCmd_Text(phost,FT_DispWidth/2,120,26,OPT_CENTERX|OPT_CENTERY,info[3]);
Ft_Gpu_CoCmd_Text(phost,FT_DispWidth/2,FT_DispHeight30,26,OPT_CENTERX|OPT_CENTERY,"Click to play");
if(sk!='P')
Ft_App_WrCoCmd_Buffer(phost,COLOR_RGB(255,255,255));
else
Ft_App_WrCoCmd_Buffer(phost,COLOR_RGB(100,100,100));
Ft_App_WrCoCmd_Buffer(phost,BEGIN(FTPOINTS));
Ft_App_WrCoCmd_Buffer(phost,POINT_SIZE(20*16));
Ft_App_WrCoCmd_Buffer(phost,TAG('P'));
Ft_App_WrCoCmd_Buffer(phost,VERTEX2F((FT_DispWidth/2)*16,(FT_DispHeight-60)*16));
Ft_App_WrCoCmd_Buffer(phost,COLOR_RGB(180,35,35));
Ft_App_WrCoCmd_Buffer(phost,BEGIN(BITMAPS));
Ft_App_WrCoCmd_Buffer(phost,VERTEX2II((FT_DispWidth/2)-14,(FT_DispHeight75),14,0));
Ft_App_WrCoCmd_Buffer(phost,DISPLAY());
Ft_Gpu_CoCmd_Swap(phost);
Ft_App_Flush_Co_Buffer(phost);
Ft_Gpu_Hal_WaitCmdfifo_empty(phost);
}while(Read_Keys()!='P');
10
Copyright © 2013 Future Technology Devices International Limited
Application Note
AN_262 FT_App_FT_Clocks
Version 1.1
Document Reference No.: FT_000907 Clearance No.: FTDI# 357
4.3 Memory Loading
The onboard graphics RAM is used to store the JPEG data and the audio data.
The file is copied from the PC (MPSSE version) or the SD card if present.
e.g. for the audio files, the function Load_afile is called with an address in the 256k Graphics RAM
to be written to.
void Load_afile(ft_uint32_t add, FILE *afile,ft_uint8_t noofsectors)
{
ft_uint8_t tbuff[512],z;
ft_uint16_t temp_add = 0;
for(z=0;z<noofsectors;z++)
{
fread(tbuff,1,512,afile);
temp_add = (add+(512L*z))&AUDIO_RAM_SPACE;
Ft_Gpu_Hal_WrMem(phost,temp_add,tbuff,512L);
}
4.4 Initial Clock Screen Setup
Compute the gradient background and load the image (SD card is present) to the GRAM via J1 and
set the bitmap properties Image and the gradient.
This section of code defines the clock face and hands colour in a structure called clk_prp.
// Intial settings
r = ft_pgm_read_byte(&clk_prp[(clkbgindex*12)+0]);
g = ft_pgm_read_byte(&clk_prp[(clkbgindex*12)+1]);
b = ft_pgm_read_byte(&clk_prp[(clkbgindex*12)+2]);
bgrgb = ((ft_uint32_t)r<<16) | ((ft_uint32_t)g<<8) | ((ft_uint32_t)b<<0);
r = ft_pgm_read_byte(&clk_prp[(clkbgindex*12)+4]);
g = ft_pgm_read_byte(&clk_prp[(clkbgindex*12)+5]);
b = ft_pgm_read_byte(&clk_prp[(clkbgindex*12)+6]) ;
minrgb = ((ft_uint32_t)r<<16) | ((ft_uint32_t)g<<8) | ((ft_uint32_t)b<<0);
r = ft_pgm_read_byte(&clk_prp[(clkbgindex*12)+8]);
g = ft_pgm_read_byte(&clk_prp[(clkbgindex*12)+9]);
b = ft_pgm_read_byte(&clk_prp[(clkbgindex*12)+10]) ;
secrgb = ((ft_uint32_t)r<<16) | ((ft_uint32_t)g<<8) | ((ft_uint32_t)b<<0);
Where to draw the image and the time to display is then coded.
temp_clk_x
temp_clk_y
temp_img_w
temp_img_h
temp_clk_s
temp_img_x
temp_img_y
=
=
=
=
=
=
=
image_prp[wall_index].clk_orgin_x;
image_prp[wall_index].clk_orgin_y;
image_prp[0].imw;
image_prp[0].imh;
image_prp[wall_index].clk_size;
(FT_DispWidth - temp_img_w)/2;
5; // for 0//(FT_DispHeight - temp_img_h)/2;
wall_bg = 0;
bmp_handle=0;
wall_index =0;
Ft_Gpu_Hal_WrCmd32(phost,CMD_MEMZERO);
Ft_Gpu_Hal_WrCmd32(phost,0);
Ft_Gpu_Hal_WrCmd32(phost,256L*1024L);
11
Copyright © 2013 Future Technology Devices International Limited
Application Note
AN_262 FT_App_FT_Clocks
Version 1.1
Document Reference No.: FT_000907 Clearance No.: FTDI# 357
This is followed by setting a gradient and drawing the background of the display
// for gradient effect
for(tval=0;tval<(FT_DispHeight/2);tval++)
{
buff[FT_DispHeight-1-tval] = buff[tval] = (tval*0.9);
}
Ft_Gpu_Hal_WrMem(phost,4096L,buff,FT_DispHeight);
for(tval=0;tval<40;tval++)
{
buff[tval] = tval*0.65;
}
Ft_Gpu_Hal_WrMem(phost,4368L,buff,40);
for(tval=0;tval<177;tval++)
{
buff[tval] = tval/3;
}
Ft_Gpu_Hal_WrMem(phost,4408L,buff,177);
incdec_setup();
Init_Audio();
Ft_DlBuffer_Index = 0;
Ft_App_WrDlCmd_Buffer(phost,CLEAR(1,1,1));
Ft_App_WrDlCmd_Buffer(phost,COLOR_A(255));
Ft_App_WrDlCmd_Buffer(phost,COLOR_RGB(255,255,255));
Ft_App_WrDlCmd_Buffer(phost,BITMAP_HANDLE(2));
Ft_App_WrDlCmd_Buffer(phost,BITMAP_SOURCE(4096L));
Ft_App_WrDlCmd_Buffer(phost,BITMAP_LAYOUT(L8,1,FT_DispHeight));
Ft_App_WrDlCmd_Buffer(phost,BITMAP_SIZE(NEAREST, REPEAT, BORDER, FT_DispWidth,
FT_DispHeight));
Ft_App_WrDlCmd_Buffer(phost,BITMAP_HANDLE(5));
Ft_App_WrDlCmd_Buffer(phost,BITMAP_SOURCE(4408L));
Ft_App_WrDlCmd_Buffer(phost,BITMAP_LAYOUT(L8,1,177));
Ft_App_WrDlCmd_Buffer(phost,BITMAP_SIZE(NEAREST, REPEAT, BORDER, 284L, 177));
Ft_App_WrDlCmd_Buffer(phost,BITMAP_HANDLE(3));
Ft_App_WrDlCmd_Buffer(phost,BITMAP_SOURCE(4368L));
Ft_App_WrDlCmd_Buffer(phost,BITMAP_LAYOUT(L8,1,40));
Ft_App_WrDlCmd_Buffer(phost,BITMAP_SIZE(NEAREST, REPEAT, BORDER, 150, 40));
Load_wallbg(bmp_handle);
Ft_App_WrDlCmd_Buffer(phost,BEGIN(BITMAPS));
Ft_App_WrDlCmd_Buffer(phost,VERTEX2II(0,0,2,0));
Ft_App_WrDlCmd_Buffer(phost,DISPLAY());
Ft_App_Flush_DL_Buffer(phost);
Ft_Gpu_DLSwap(DLSWAP_FRAME);
Ft_CmdBuffer_Index = 0;
Ft_Gpu_CoCmd_Track(phost,temp_clk_x+temp_img_x,temp_clk_y+temp_img_y,1,1,CLOCK_MINTAG)
;
Ft_App_Flush_Co_Buffer(phost);
//L8 format
Ft_Gpu_Hal_WaitCmdfifo_empty(phost);
12
Copyright © 2013 Future Technology Devices International Limited
Application Note
AN_262 FT_App_FT_Clocks
Version 1.1
Document Reference No.: FT_000907 Clearance No.: FTDI# 357
5 Operation
When the user compiles and runs the application code the first screen will be the calibration screen
where the user must tap the screen in 3 places to align the touch and the display layers.
When the user compiles and runs the application code the first screen will be the calibration screen
where the user must tap the screen in 3 places to align the touch and the display layers.
Figure 5.1 Tap Screen
This is followed by the logo and the composite logo/information screen which gives a short
description of what the application does.
Figure 5.2 Composite screen
After pressing “Click to Play” the app displays the clock.
Figure 5.3 FtClock
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Copyright © 2013 Future Technology Devices International Limited
Application Note
AN_262 FT_App_FT_Clocks
Version 1.1
Document Reference No.: FT_000907 Clearance No.: FTDI# 357
5.1.1
Date Setting
If the user touches the date region on the screen, the date/month/year setting screen will appear,
after setting the MCU waiting for the confirmation, the user should click again in date region
date/month/year in the display.
Figure 5.4 Date Setting
5.1.2
Time Setting
The user can adjust the time by using the minute handle, when the minute handle is release the
time gets stored in Global variable. The application can’t change the system time.
5.1.3
Clock Skin
Clock skin colour is changeable, the user can change it by touching the clock region. The touch
highlight will appear on the Clock.
5.1.4
Wall Background
The user can change the background image. The user can touch the background to change the
background image. The touch highlight will appear on the image.
If there is no SD card, only two skins are available to change.
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Copyright © 2013 Future Technology Devices International Limited
Application Note
AN_262 FT_App_FT_Clocks
Version 1.1
Document Reference No.: FT_000907 Clearance No.: FTDI# 357
6 Contact Information
Head Office – Glasgow, UK
Branch Office – Tigard, Oregon, USA
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Unit 1, 2 Seaward Place, Centurion Business Park
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United Kingdom
Tel: +44 (0) 141 429 2777
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Future Technology Devices International Limited
(USA)
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Tel: +1 (503) 547 0988
Fax: +1 (503) 547 0987
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E-Mail (Sales)
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us.support@ftdichip.com
us.admin@ftdichip.com
Branch Office – Taipei, Taiwan
Branch Office – Shanghai, China
Future Technology Devices International Limited
(Taiwan)
2F, No. 516, Sec. 1, NeiHu Road
Taipei 114
Taiwan , R.O.C.
Tel: +886 (0) 2 8791 3570
Fax: +886 (0) 2 8791 3576
Future Technology Devices International Limited
(China)
Room 1103, No. 666 West Huaihai Road,
Shanghai, 200052
China
Tel: +86 21 62351596
Fax: +86 21 62351595
E-mail (Sales)
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E-mail (General Enquiries)
E-mail (Sales)
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tw.support1@ftdichip.com
tw.admin1@ftdichip.com
cn.sales@ftdichip.com
cn.support@ftdichip.com
cn.admin@ftdichip.com
Web Site
http://ftdichip.com
Distributor and Sales Representatives
Please visit the Sales Network page of the FTDI Web site for the contact details of our distributor(s) and sales
representative(s) in your country.
System and equipment manufacturers and designers are responsible to ensure that their systems, and any Future Technology
Devices International Ltd (FTDI) devices incorporated in their systems, meet all applicable safety, regulatory and system-level
performance requirements. All application-related information in this document (including application descriptions, suggested
FTDI devices and other materials) is provided for reference only. While FTDI has taken care to assure it is accurate, this
information is subject to customer confirmation, and FTDI disclaims all liability for system designs and for any applications
assistance provided by FTDI. Use of FTDI devices in life support and/or safety applications is entirely at the user’s risk, and the
user agrees to defend, indemnify and hold harmless FTDI from any and all damages, claims, suits or expense resulting from
such use. This document is subject to change without notice. No freedom to use patents or other intellectual property rights is
implied by the publication of this document. Neither the whole nor any part of the information contained in, or the product
described in this document, may be adapted or reproduced in any material or electronic form without the prior written consent
of the copyright holder. Future Technology Devices International Ltd, Unit 1, 2 Seaward Place, Centurion Business Park,
Glasgow G41 1HH, United Kingdom. Scotland Registered Company Number: SC136640
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Copyright © 2013 Future Technology Devices International Limited
Application Note
AN_262 FT_App_FT_Clocks
Version 1.1
Document Reference No.: FT_000907 Clearance No.: FTDI# 357
Appendix A– References
Document References
1.
2.
3.
4.
Datasheet for VM800C
Datasheet for VM800B
FT800 programmer guide FT_000793.
FT800 Embedded Video Engine Datasheet FT_000792
Acronyms and Abbreviations
Terms
Description
Arduino Pro
The open source platform variety based on ATMEL’s ATMEGA chipset
EVE
Embedded Video Engine
SPI
Serial Peripheral Interface
UI
User Interface
USB
Universal Serial Bus
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Copyright © 2013 Future Technology Devices International Limited
Application Note
AN_262 FT_App_FT_Clocks
Version 1.1
Document Reference No.: FT_000907 Clearance No.: FTDI# 357
Appendix B – List of Tables & Figures
List of Figures
Figure 2.1-1 Flowchart ...................................................................................................................7
Figure 3.2-2 FtClock .................................................................................................................... 13
Figure 3.2-3 Date Setting............................................................................................................. 14
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Copyright © 2013 Future Technology Devices International Limited
Application Note
AN_262 FT_App_FT_Clocks
Version 1.1
Document Reference No.: FT_000907 Clearance No.: FTDI# 357
Appendix C– Revision History
Document Title:
AN_262 FT_App_FT_Clocks
Document Reference No.:
FT_000907
Clearance No.:
FTDI# 357
Product Page:
http://www.ftdichip.com/EVE.htm
Document Feedback:
Send Feedback
Revision
Changes
Date
0.1
Initial draft release
2013-07-18
1.0
Version 1.0 updated wrt review comments
2013-08-21
1.1
Version 1.1
2013-11-01
18
Copyright © 2013 Future Technology Devices International Limited