Application for creating graphical "Ladder Logic" programs. It includes compiler targeting PIC Assembly.
A program is "written" by laying out tiles representing logical functions (timers, counters etc) on a board and connecting them using red wires (relay tiles). The state of each wire is shown using green dots in real time. The application includes capability to save/open programs in a human readable format based on json (.lil)
To the right of the board there are options to convert the selected tile to a different type and various tile specific options (such as configuring which way to accept IO from). Further right there is a panel allowing the user to manually interact with flags (those will be compiled to the pins on the PIC). Flags can we used to transmit the state of a wire "wirelessly" by specifying a unique text identifier. The application resolves any errors that may arise from multiple sources trying to drive the same flag
###Tile Types:
Tile - a "do nothing tile"
Relay - A wire that conducts/transmits a signal
Source - Outputs an on signal in all directions
Flag - Drives a flag with the value of its input
Generator - Outputs a signal depending on a flag
Switch - Conducts signal when the selected flag is high (or low when inverted)
Counter - Outputs high after the selected number of rising edges
Pulsar - Generates a square wave of a given frequency
Timer - Either ensures a pules is at least n ms long (hold mode) or delays the rising edge (and turns it into a as-short-as-possible pulse) by n ms (delay monostable)
Sequencer - Drives a sequence on flags in a one-hot fashion. Move to the next flag on a rising edge
To upload it to a PIC you need open the generated file in MPLab and assemble it before uploading.
###Keyboard shortcuts:
S: Select tile A: Place wire and automaticly determine direction F: Place flag input tile H: Place switch tile and configure input/output horizontaly X: Delete tile The arrow keys move the selection around Holding shift prevents the tool from automatically switching back to the select tool after a single use
This collection of python scipts can be converted into an Mac Application bundle using py2app. Just run python3 setup_mac.py py2app
Michal Adamkiewicz 2017