Logo is a fun and easy way to program your PicoCalc! The project site includes a full reference manual to get you started with classic Logo fundamentals. In addition, the internet is full of resources to get started and then to advance to more complex solutions.
Feature Highlights:
320×320 resolution turtle graphics with 256 colours (from a palette of 65K colours)
Three simultaneous display modes: full screen text for programs without graphics, full screen graphics for running graphical programs, and split screen for interactive use
Full line editing and history
Compatible with Logo books and manuals from the 1980s and 1990s.
Variables, procedures, control structures (if, repeat), lists, arithmetic, and logical operations.
Uses 32-bit floats for numerical calculations, with fallback for integer-only hardware.
Manage files (catalog, setprefix, erasefile, …) and load and save Logo programs to and from a SD card formatted as FAT32.
I will use this thread to post updates on this project.
Implement reverse video support for character and string rendering
Tips
Mono sound can be produced with toot 500 440 (quarter note A) or stereo with (toot 500 330 440) (quarter note of A and E)
wrap (default) the drawing wraps from one edge to the opposite edge, window only show the drawing that are drawn in the coordinates of the screen, or fence displays an error if the turtle moves beyond the screen edges.
Add screensaver functionality to prevent LCD image persistence
Implement flood fill functionality for turtle graphics
Add shape management primitives
Bug fixes around input on the split screen
Tips
I noticed that the PicoCalc’s display is susceptible to LCD image persistence (not permanent). In this release, after 5 minutes of waiting for input, the screen will start cycling shades and hues (as the Atari 8-bits do). Any key press will return the screen to normal.
Flood fill arrives!
You can change the shape of the turtle (up to 15 shapes), examples:
Please let me know if you find any problems. Note that some primitives may be different so check the reference guide to see how to do what you need to do in Pico Logo.
The release moves from alpha quality of the previous releases to beta quality.
Overall stability and proper operation was the focus of this release, along with a full-display editor that allows you to edit procedures, variables and files on the SD Card.
Please let me know if you find any problems. I would appreciate any feedback you wish to provide.
What’s Changed
Implement infix equality operator for words and numbers
Refactor number formatting
Full screen editor
Screen mode switching during execution
Refactor turtle background handling
Optimize line drawing
Edit improvements
Implement pause and freeze functionality
Improved memory safety
Enhance error propagation and control flow handling in eval and catch
Refactor error handling to enhance error message formatting
Fix Label/go and error messages
Implement step-by-step execution for procedures
Report error in procedure
Update input_can_read to handle mode-switching keys
Add ‘savel’ command to save specified procedures and variables to a file
Improve file handling
Use memmove and optimize memory operations in editor
It looks like Logo cannot mount the SD Card. Logo can only read cards formatted with FAT32.
It’s really tough to diagnose these problems as each SD Card is a hardware device that you are inserting, unlike a floppy where the floppy drive (hardware device) is part of the computer and you are inserting media.
Would you be able to try a different SD Card? I have tested Logo with the SD Card that came with the PicoCalc.
I did test with all the cards I own (a few different brands) and I did have to made changes to the code to get them all to work.
Logo uses the same driver as the PicoCalc Text Starter Kit. It would be interesting to see if your card also fails with it as well.
The one provided by clockworkpi with picocalc. Picocalc-text-starter can list files with the dir command, but after reboot, pico-logo not. Strange enough. I have a debug-probe, can it be useful for the diagnostic? I never used it
My fault, I should have made the documentation clearer.
I have already updated the reference manual and I have made some code changes to let you better know what is happening, which will be in the next release.
This release adds many quality of life improvements to the editor: auto-indentation, auto-closing of brackets, modern home behaviour, editing of your workspace with edall, and more. Also I added prefix filtering to the prompt to search through your history easier.
I corrected define/text to match Logo semantics and additional bug fixes. I also improved setprefix to display an error message if the directory does not exist.
I refactored many areas in the code base for clarity and maintainability.
Now I include the Pico Logo Reference as a PDF (a little over 100 pages!) with each release.
What’s Changed
Editor improvements
Check setprefix valid; add erf for erasefile
Add prefix-based history search functionality in input handling
Refactor procedure body structure to use list-of-lists
