Pico Multiplier

A simple multiplication calculator, on Raspberry Pi Pico W with Maker Pi Pico

What it does

With the Pico W attached on top of the Maker Board (see image for reference of maker Board), the Pico W will:

• Count the number of presses on GP20 and GP21 respectively.
• The counted number on GP20, stored as variable A, will be displayed in 4-bit binary form. Ranging from GP2 to GP5, with GP2 being the MSB (most significant bit).
• The counted number on GP21, stored as variable B, will be displayed in 4-bit binary form. Ranging from GP6 to GP9, with GP6 being the MSB.
• Pressing GP22 will perform a multiplication on A and B. The value will be displayed in 6-bit binary form, ranging from GP10 to GP15, with GP15 being the MSB.
  • In the event that the result is unable to fit into 6 bits (overflow), all LEDs from GP10 to GP15 will light up, and GP0 will become a 'breathing' light. (Basically, slowly dim up/down in brightness)
• After GP22 is pressed, system will wait for 5 seconds, then reset all led/button/variable value states.
  • During 5 second wait time, buttons are unresponsive.

NOTE_1: GP0 uses PWM to drive the signal, while GP2 to GP15 are signalled using standard GPIO.
NOTE_2: GP20 and GP21 isn't expected to handle more than 16 presses. (aka, more tan 4-bits of presses)

How to Run

NOTE: Install Pico C SDK if you haven't done so yet, with enviorment variable setup.

Build with CMake

• In the src directory, make a new folder called build.
• Open a terminal, access the build folder.
• Run cmake ..
• Run build

A main.uf2 file should appear in the build directory.

Running the file

With the Raspberry Pi Pico W:

• Press and hold the button on the Pico W, then connect via USB to your PC.
• After a 3 seconds or so, let go of the button.
• you should see a new device media (Should be somthing like 'Pi2') appear on your respective file explorer program.
• Drop and drop the main.uf2 into the new device media.

Enjoy ㊗️