Casio Python updates

[ijabbott]

The firmware updates promised for April 2020 are out now.

• OS Ver. 3.40 for fx-CG50, fx-CG50 AU, and Graph 90+E
• OS Ver. 3.30 for Graph 35+E II
  

Correction: OS Ver. 3.30 has not been released for fx-9860GIII as of 2020-04-07. Maybe it will be released later?

The MicroPython has a new "casioplot" module for drawing stuff.

I must say that the list of functions in the casioplot module is not very extensive:

• show_screen() – shows (or refreshes) the drawing screen.
• set_pixel(x, y[, color]) – draws a pixel with optional color (defaults to black).
• get_pixel(x, y) – gets color of a pixel.
• draw_string(x, y, s[, color[, size]]) – draws a text string with optional color (defaults to black) and size (defaults to "medium").
  

EDIT: There appears to be an additional, undocumented function:

• clear_screen() – clears the drawing screen.
  

Drawing updates are not shown until the next call to show_screen(). The drawing screen is cleared (to all white pixels) when the SHELL is initialized (e.g. by running a .py script).

On the monochrome calculators (Graph 35+E II and fx-9860GIII is it is ever supported), RGB color values between (248,252,248) and (255,255,255) show as white; all other RGB color values show as black.