Small addition to the GFX module reference

[vdveen]

Hi there! I just got my GFX Pack. Setup went quite neat, until I hit the problem that text wouldn't render on the GFX screen. It took me a lot of comparing-to-examples to figure out that I was missing a display.set_pen(15) statement in my first code for the GFX screen. It's nowhere on the GFX rendering page, and the way it's worded on the general PicoGraphics module page does not make clear that it was needed. Without the set_pen line, my screen just stays blank.

import picographics
import gfx_pack
board = gfx_pack.GfxPack()
board.set_backlight(0, 0, 255)  # Makes the Backlight Green

display = board.display

display.set_pen(15) #<--- IF I REMOVE THIS LINE MY SCREEN STAYS BLANK

# set up
#display.set_font("bitmap8")
display.text("Hello World!", 0, 0)
display.line(0, 0, 128, 64) 
display.update()  # Update display with the above items

[helgibbons]

Thanks! I've updated the code snippet in the GFX Pack readme to include the set_pen, hopefully this should help prevent other folks getting tripped up with this.