Headless sense hat with joystick

[rhellyer]

I am trying to create a simple headless game which uses the onboard joystick and led matrix. But pygame requires a screen and so I get an error when trying to use the pygame to access the joystick ... Any suggestions for a workaround?

[ShiftPlusOne]

There's this:
https://python-evdev.readthedocs.org/en/latest/


Also, works is being done on the python-sense-hat library to make using the joystick easier.

[subjektivdk]

There's this:
https://python-evdev.readthedocs.org/en/latest/


Also, works is being done on the python-sense-hat library to make using the joystick easier.

Sounds nice - I am looking forward to that.

[ShiftPlusOne]

You should be able to give it a go... https://github.com/RPi-Distro/python-se ... /issues/11
https://github.com/RPi-Distro/python-se ... t/stick.py

[richrarobi]

I puzzled over how to use the stick without blocking the program (too much).
This crude example (using the stick.py in the previous post) might help others (Note the stick.wait with 0.01 as timeout) :

Code: Select all

from sense_hat import SenseHat
import time
import random
from stick import SenseStick

sense = SenseHat()
sense.set_rotation(270)

KEY_UP = 103
KEY_LEFT = 105
KEY_RIGHT = 106
KEY_DOWN = 108
KEY_ENTER = 28

stick = SenseStick()

try:
	while True:
		red = random.randint(0, 255)
		green = random.randint(0, 255)
		blue = random.randint(0, 255)
		x = random.randint(0, 7)
		y = random.randint(0, 7)
		sense.set_pixel(x, y, [red, green, blue])
		x = random.randint(0, 7)
		y = random.randint(0, 7)
		sense.set_pixel(x, y, [0, 0, 0])
		x = random.randint(0, 7)
		y = random.randint(0, 7)
		sense.set_pixel(x, y, [0, 0, 0])
		time.sleep(0.02)
		
		if stick.wait(timeout=0.01)==True:
			user_input = stick.read()[1]
			if user_input==KEY_LEFT:
				print "Left"
			elif user_input==KEY_RIGHT:
				print "Right"
			elif user_input==KEY_UP:
				print "Up"
			elif user_input==KEY_DOWN:
				print "Down"				
			elif user_input==KEY_ENTER:
				print "exiting"
				sense.clear()
				break

except KeyboardInterrupt:
	sense.clear()
	print
	print ("program stopped")

RichR
p.s. I am using Jessie, so no need for sudo to access GPIO
P.p.s. this program could be used as a (home security) TV simulator !!!