Draw a rounded rectangle

this function is called when error pin changes as enable signal

Fill a rounded rectangle

check the NVM and set to defaults if there is any

the Arduino delay function requires interrupts to work. if interrupts are disabled use the delayMicroseconds which is a spin loop

auto tuning of PID parameters based on documentation here: http://brettbeauregard.com/blog/2012/01/arduino-pid-autotune-library http://www.controleng.

the phase prediction tries to predict error from sensor based on current location and previous location. TODO our error can help in the phase predicti

Enable (or disable) Code Page 437-compatible charset. There was an error in glcdfont.c for the longest time -- one character (#176, the 'light shade'

Dim the display dim = true: display is dimmed dim = false: display is normal

Draw a 1-bit image (bitmap) at the specified (x,y) position from the provided bitmap buffer (must be PROGMEM memory) using the specified foreground co

Draw a character

Draw a circle outline

Bresenham's algorithm - thx wikpedia