2.2 TFT screen can work properly on software SPI with yun shield
yun shield is put on top of arduino uno
connection is like this
sclk - digital pin out on yun shield 13
miso - digital pin out on yun shield 12
mosi - digital pin out on yun shield 11
cs - digital pin out on yun shield 10
dc - digital pin out on yun shield 9
rst - digital pin out on yun shield 8
but screen action is exctremely slow, so i change to use hardware SPI
I tried the above connection using hardware SPI, it is failed, TFT screen just show white color
and I checked on web, someone suggest to use ICSP pin, so i tried to connect like this
sclk - yun shield ICSP pin 3
miso - yun shield ICSP pin 1
mosi - yun shield ICSP pin 4
cs - digital pin out on yun shield 10
dc - digital pin out on yun shield 9
rst - digital pin out on yun shield 8
It is still fail
Anyone can tell what is the proper wiring to use hardware SPI to control TFT screen??