Multicore

Spring 2020

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1) Multiple Cores

The ESP32 actually has two cores on it and we've only been using one so far this semester. Some of you may benefit from putting some more periodic, blocking tasks (cough...like GETs and POST requests) on a separate core so that they won't block execution of other functionalities.

Several teams did this last year to great success. Some tutorials they used in their groups' 6.08 projects were:

Some basic code from these sites looks like the following:


// MARK: Multicore stuff 
TaskHandle_t NetworkTask;

void NetworkTaskCode(void * pvParameters){
    while (true){
        post_heading(theta_z, user_name);
        delay(250);
        get_rel_fish_pos(theta_z);
    }
}

void setup(){
    // Pin to core
    xTaskCreatePinnedToCore(
        NetworkTaskCode,
     "NetworkTask", 
        10000,
        NULL,
      1,
        &NetworkTask,
        0);
    delay(50); 
}