BlinkSync

A dual-core program for RP2350 and RP2040

Description

This program demonstrates how to run a dual-core program on the RP2040 and RP2350.

It re-uses:

• BlinkPlus to run on core 0

• SignalSync to run on core 1

Necessary changes (in directory BlinkSync):

• In SignalSync.mod:

  • remove Main from the IMPORT list
  • remove heartbeat thread (only one LED on Pico/Pico2)
  • export the Run procedure

• In BlinkPlus.mod:

  • import module SignalSync
  • add to the start-up code:

  Cores.StartCoreOne(SignalSync.Run, Main.ConfigC1)
  

Each core installs and runs its own kernel, and the threads print out to the serial terminal assigned to the corresponding core as configured my module Main.

Further Reading

• Your First Build
• Connecting the Boards
• Program Startup

Repository

• <repo>/examples/v3.1/rpi/pico/BlinkSync
• <repo>/examples/v3.1/rpi/pico2/BlinkSync

Last updated: 18 May 2026