Peter Drescher / FT800

Lib for FTDI FT800 Graphic Controller EVE Support up to 512 x 512 pixel resolution. Resistive touch sense Mono audio output SPI Interface

Dependents:   FT800_touch_track FT800_JPG

Library for the FT800 Display,Audio and Touch Controller from FTDI. The Code is based on the sample code from FTDI.

FT800 is a graphics chip with added features such as audio playback and touch capabilities. FT800 graphics consist of a rich set of graphics objects (primitive and widgets) that can be used for displaying various menus and screen shots.

http://www.ftdichip.com/Products/ICs/FT800.html

The mbed is talking thru the SPI interface with the graphic engine. We have to set up a list of Commands and send them to the FT800 to get graphics.

Hardware

1. VM800C development modules from FTDI : http://www.ftdichip.com/Products/Modules/VM800C.html

The modules come with different size lcd. 3.5", 4.3" or 5" or without. The picture shows a modified board, because my lcd had a different pinout. The mbed is connected to the pin header on the bottom.

2. EVBEVE-FT800 board from GLYN: http://www.glyn.com/News-Events/Newsletter/Newsletter-2013/October-2013/A-quick-start-for-EVE-Requires-no-basic-knowledge-graphics-sound-and-touch-can-all-be-learned-in-minutes

The module has a 40 pin flex cable connector to connect a display out of the EDT series.

The mbed is connected via the pin header on the left. If you use this board with a EDT display you have to uncomment the #define Inv_Backlite in FT_LCD_Type.h, because the backlight dimming is inverted.

3. ConnectEVE board from MikroElektronika http://www.mikroe.com/add-on-boards/display/connecteve/#headers_10 The board has also a pin header to connect the mbed. - not tested, but it looks like the other boards.

Connection

We need 5 signals to connect to the mbed. SCK, MOSI and MISO are connected to a SPI channel. SS is the chip select signal and PD work as powerdown. The additional INT signal is not used at the moment. It is possible to generate a interrupt signal, but at the moment you have to poll the status register of the FT800 to see if a command is finished.

Software

This lib is based on the demo code from FTDI. If you want to use it, you have to read the programming manual : http://www.ftdichip.com/Support/Documents/ProgramGuides/FT800%20Programmers%20Guide.pdf

See my demo : http://mbed.org/users/dreschpe/code/FT800_touch_track/

or the demo code from FTDI : http://www.ftdichip.com/Support/SoftwareExamples/EVE/FT800_SampleApp_1.0.zip

/* mbed Library for FTDI FT800  Enbedded Video Engine "EVE"
 * based on Original Code Sample from FTDI 
 * ported to mbed by Peter Drescher, DC2PD 2014
 * Released under the MIT License: http://mbed.org/license/mit */

#ifndef _FT_DATATYPES_H_
#define _FT_DATATYPES_H_


#define FT_FALSE           (0)
#define FT_TRUE            (1)

typedef char ft_char8_t;
typedef signed char ft_schar8_t;
typedef unsigned char ft_uchar8_t;
typedef ft_uchar8_t ft_uint8_t;
typedef short  ft_int16_t;
typedef unsigned short ft_uint16_t;
typedef unsigned int ft_uint32_t;
typedef int ft_int32_t;
typedef void ft_void_t;
typedef long long ft_int64_t;
typedef unsigned long long ft_uint64_t;
typedef float ft_float_t;
typedef double ft_double_t;
typedef char ft_bool_t;

#define FT_BYTE_SIZE (1)
#define FT_SHORT_SIZE (2)
#define FT_WORD_SIZE (4)
#define FT_DWORD_SIZE (8)

#define FT_NUMBITS_IN_BYTE (1*8)
#define FT_NUMBITS_IN_SHORT (2*8)
#define FT_NUMBITS_IN_WORD (4*8)
#define FT_NUMBITS_IN_DWORD (8*8)

#define ft_prog_uchar8_t  ft_uchar8_t
#define ft_prog_char8_t   ft_char8_t
#define ft_prog_uint16_t  ft_uint16_t

#define ft_random(x)		(rand() % (x))

#define ft_pgm_read_byte_near(x)   (*(x))
#define ft_pgm_read_byte(x)        (*(x))

#define ft_strcpy_P     strcpy
#define ft_strlen_P     strlen

#define FT_DBGPRINT(x)  printf(x)
#define FT_PROGMEM  const

#define ft_pgm_read_byte_near(x)   (*(x))
#define ft_pgm_read_byte(x)        (*(x))

#define ft_pgm_read_word(addr)   (*(ft_int16_t*)(addr))

#endif /*_FT_DATATYPES_H_*/


/* Nothing beyond this*/