electronic-mcp-server: Skill for Claude Code

FreeRTOS Patterns for ESP32 & RP2040 Multicore

Comprehensive patterns for multitasking on ESP32 (FreeRTOS) and RP2040 (dual-core with mutex synchronization).

Resources

• references/patterns-task-creation.md - Task lifecycle, priorities, stack sizing
• references/patterns-queues.md - Inter-task communication via queues
• references/patterns-synchronization.md - Semaphores, mutexes, critical sections
• references/patterns-memory.md - Heap management, stack monitoring
• references/patterns-advanced.md - Watchdogs, notifications, event groups
• assets/workflow.mmd - FreeRTOS architecture diagram

Quick Start

#include <Arduino.h>

// Task function prototype
void taskBlink(void* parameter);

void setup() {
  Serial.begin(115200);
  pinMode(LED_BUILTIN, OUTPUT);
  
  // Create task with priority 1, 2KB stack
  xTaskCreate(
    taskBlink,          // Task function
    "Blink",            // Task name
    2048,               // Stack size (bytes)
    NULL,               // Parameters
    1,                  // Priority (0 = lowest)
    NULL                // Task handle
  );
}

void taskBlink(void* parameter) {
  while(true) {
    digitalWrite(LED_BUILTIN, HIGH);
    vTaskDelay(pdMS_TO_TICKS(500));
    digitalWrite(LED_BUILTIN, LOW);
    vTaskDelay(pdMS_TO_TICKS(500));
  }
}

void loop() {
  // Empty - FreeRTOS scheduler manages tasks
}

When to Use

ESP32 FreeRTOS

Use FreeRTOS patterns when:

• Multiple concurrent operations - WiFi + sensor reading + display updates
• Priority-based scheduling - Critical tasks (safety) must preempt low-priority tasks
• Real-time constraints - Guaranteed response time needed
• Complex synchronization - Shared resources between tasks (UART, SPI, I2C)
• Event-driven architecture - Tasks wake on events (button press, network packet)

RP2040 Dual-Core

Use RP2040 multicore patterns when:

• Parallel execution - WiFi/Bluetooth on Core1, sensors on Core0
• Dedicated cores - Audio processing on Core1, UI on Core0
• Simple threading - Only 2 tasks needed (setup1/loop1 simpler than FreeRTOS)
• Mutex protection - Shared data between cores (similar to FreeRTOS mutex)