Scripting Example: E-Ink Drawing

The E-Ink display is 320x240 pixels. Coordinates use the top-left origin.

// PocketMage E-Ink scripting example
// Based on Wrench by jingoro2112 (GH)
// Edit with potion: pot ink.c
// Compile and run: brew ink.c
// Colors/clr: 1 - Black, 0 - White

delay(1000);

// Draw shapes on a white background
inkBackground(0);                              // background color
inkRect(10, 20, 50, 25, 1, 0);                 // x,y,w,h,line clr,fill clr
inkCircle(100, 50, 30, 1, 1);                  // x,y,r,line clr,fill clr
inkText(10, 100, 2, 1, "PocketMage!");         // x,y,size,color,text
updateInk();                                   // update E-Ink display

delay(3000);

// Draw shapes on a black background
inkBackground(1);                              // background color
inkRect(20, 10, 25, 50, 0, 1);                 // x,y,w,h,line clr,fill clr
inkCircle(120, 60, 35, 0, 0);                  // x,y,r,line clr,fill clr
inkText(30, 120, 3, 0, "Hello World!");        // x,y,size,color,text
updateInk();                                   // update E-Ink display

delay(3000);

What it shows

  • inkBackground() fills the whole screen.
  • inkRect() and inkCircle() draw into the display buffer.
  • inkText() renders text at a font size.
  • updateInk() is the blocking hardware refresh; nothing appears until you call it.
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