Oxford CWM Team » Code » TFT_Mikroelectronika_IL9341_sketchpad

Oxford CWM Team / Mbed 2 deprecated TFT_Mikroelectronika_IL9341_sketchpad

This is a simple program using the Mikroelectronika TFT resistive touchscreen to create a sketchpad application.

Dependencies: SPI_TFT_ILI9341 TFT_fonts mbed

Fork of TFT_Mikroelectronika_IL9341 by Oxford CWM Team

Code to make a simple sketchpad using the touchscreen from Mikroelectronika

The Mikroelectronika touch screen is a good sized display we are using for the first time in 2016. It's got a touch panel layer and can be addressed by either SPI or parallel buses.

http://www.mikroe.com/add-on-boards/display/tft-proto/

/media/uploads/cstevens/sketchpad.jpg

Pin connections for use with an mbed

Referring to the pin names on the screen pcb

Pins:

Screen	mbed name	KL25Z example
sdi	mosi	PTD2
sdo	miso	PTD3
rs	sck	PTD1
RD	GND	GND
IM0	GND	GND
IM1	3.3V	3V3
IM2	3.3V	3V3
IM3	3.3V	3V3
CS	digitalout pin	PTD5
RST	digitaloutpin	PTD0
WR	digitaloutpin	PTA13

You will need 2 wires to drive the backlight on leda and ledk (anode(connect to +V via a current limiting resistor) and cathode) Link +3.3V to IM1, IM2, IM3 to setup spi communication mode link

History

working versin with a few problems - mostly that the touch identification routine is still not 10% accurATE at telling when an actual touch has occurred.. random noise on the adcs tends to make the occasional spot apear.; fix for thi would be to detec default tip

2016-06-15, by cstevens [Wed, 15 Jun 2016 09:00:27 +0000] rev 7

working versin with a few problems - mostly that the touch identification routine is still not 10% accurATE at telling when an actual touch has occurred.. random noise on the adcs tends to make the occasional spot apear.; fix for thi would be to detec

touch nearly working;

2016-06-14, by cstevens [Tue, 14 Jun 2016 11:01:24 +0000] rev 6

touch nearly working;

working demo;

2016-06-09, by cstevens [Thu, 09 Jun 2016 16:19:10 +0000] rev 5

working demo;

Version setup to drive the Mikroelectronics TFT_PROTO screens from farnell; These need some work as they use 80mA of backlight current.; They do have the touch screen capability though.;

2016-06-09, by cstevens [Thu, 09 Jun 2016 10:33:48 +0000] rev 4

Version setup to drive the Mikroelectronics TFT_PROTO screens from farnell; These need some work as they use 80mA of backlight current.; They do have the touch screen capability though.;