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Chippy Gonzales

Chippy Gonzales is a tool for directly manipulating the C.H.I.P.'s GPIO hardware-registers, allowing you to query and set things like e.g. mux, pin-state and pull-up/-down.

The tool can also print out a prettyish graph of either of the C.H.I.P.'s two pin-headers: Pin-header printout

Warning

Due to directly manipulating the registers it bypasses the Linux-kernel's pinctrl-scheme and you can very much mess things up with it. You should only be using the tool, if you know what you are doing.

YOU ASSUME ALL RESPONSIBILITY FOR USE OF THIS TOOL.

Usage

The tool accepts the following commands: readPin, readPull, readMux, writePin, writePull, writeMux, header1 and header2. All the read-commands follow the same format, ie. gonzales command port pin where port is a number ranging from 0 to 6 or a character from a to g, and pin is 0 to 31. Port 0 corresponds to port A, port 1 to port B and so on, and if given as a character, the character can be lowercase or uppercase. Example: gonzales readPin d 25 to read pin PD25.

The format for the write-commands is the same, except for the value given:

  • writePin [port] [pin] [low/LOW/high/HIGH/0/1]
  • writeMux [port] [pin] [in/input/INPUT/out/output/OUTPUT/0-6]
    • 0 means INPUT, 1 means OUTPUT and the rest depends on the pin, and the command takes no human-readable input for those.
  • writePull [port] [pin] [up/UP/down/DOWN/disable/DISABLE/0/1/2]
    • 0 means disable, 1 means pull-up, 2 means pull-down.

The commands header1 and header2 do not take any parameters.