Command Reference

Command reference

These are all 12 commands registered in the current shared renderer. Each command uses {"cmd": "name", "args": {...}} inside a protocol 2.0 document.

Command	Purpose
clear	Fill the entire framebuffer
clear_window	Fill a rectangular region
set_rotate	Set rotation for subsequent drawing
set_mirroring	Set mirroring for subsequent drawing
set_pixel	Set one pixel
draw_point	Draw a point or block
draw_line	Draw a line between two points
draw_rectangle	Draw a rectangle
draw_circle	Draw a circle
draw_pie_slice	Draw a filled circular sector
draw_image	Draw Base64-packed indexed pixels
draw_text	Draw bounded UTF-8 rich text

draw_string is a removed v1 command. See Versioning for migration.

Commands execute sequentially. Colors, bounds, required fields, and rendering limits are command-specific; helper-library defaults do not make a wire argument optional.

Implementation references

• Arduino/src/e-paper/paper_command.cpp