2.0" TFT Touch display

Update:

Finally have Touch and TFT updates working. In video M4 is initialising and controlling the display and a simple UI is presented allowing toggling a green LED. Blog link if of interest and again this is custom code (FreeRTOS).







Finally got this extremely cheap 2.0" Touch TFT display to output some data using the M4. As normal I'm not using the Arduino libraries but custom code (FreeRTOS). Next challenge is to see if touch can be made to work.

 

Dont you want to send graphics from linux image from a9 to that screen?

 

Interfacing that type of screen to A9 is convoluted because there no parallel screen interface exposed. NEO only has hdmi or lvds on A9 and thus require external signal conversion back to RGB parallel. Unfortunately the native LCD parallel interface on the A9 is used to provide the HDMI signal.

 

But isnt it possible to use native A9's SPI for this? Or is this LCD pararel?

 

LCD Parallel (potential faster than SPI) but takes too many pins.

 

I see, great job then!

 

Finally have Touch and TFT working see first post for details.

 

Did you consider making a guide for configuring the m4 debug enviroment in eclipse with free rtos?

 

Unfortunately I don't use eclipse as I have access to a commercial ARM DS5 environment for the occasions where I need jtag debugging (which is rare).