Enthernet Code Comments - Answer Overflow

Enthernet Code

•Created by Boss lady on 6/25/2024 in #middleware-and-os

Can I use an idle hook function in FreeRTOS to perform low-priority tasks?

@Boss lady If your idle hook isn't being executed, check that the idle hook is enabled in your FreeRTOSConfig.h file by setting configUSE_IDLE_HOOK to 1.

#define configUSE_IDLE_HOOK 1

#define configUSE_IDLE_HOOK 1

, check that your idle hook function is correctly implemented and matches the expected function signature.

void vApplicationIdleHook(void) {
    // Perform low-priority task
}

void vApplicationIdleHook(void) {
    // Perform low-priority task
}

, make sure that there are periods when no other tasks are ready to run so the idle task can execute.

4 replies

DIIDevHeads IoT Integration Server

•Created by Sterling on 6/25/2024 in #middleware-and-os

Resolving Guru Meditation Error in ESP32-Wroom TasksQueue

@Sterling this is often related to issues with memory allocation, access, or synchronization when working with dual-core processors like the ESP32. To solve this, ensure that a task is pinned to a core and the memory access are handled properly

3 replies

DIIDevHeads IoT Integration Server

•Created by Gendos on 6/24/2024 in #pcb-and-analog

Why is power consumption higher in standby mode than stop mode on an STM32F411CEU6?

@Gendos Use a debugger to verify the state of the MCU just before entering Standby, also Double-check the RTC configuration to ensure it is set up correctly and is the only wake-up source. This might ahv been the reason for higher every consumption

3 replies

DIIDevHeads IoT Integration Server

•Created by wafa_ath on 4/22/2024 in #edge-networking

emg sensor with esp32

#include <WiFi.h>
#include <PubSubClient.h>

const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";
const char* mqtt_server = "your_computer_IP";

WiFiClient espClient;
PubSubClient client(espClient);

void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  client.setServer(mqtt_server, 1883);
}

void loop() {
  if (!client.connected()) {
    reconnect();
  }
  client.loop();

  // Read EMG sensor data
  int emgValue = analogRead(34);
  char msg[50];
  sprintf(msg, "EMG: %d", emgValue);

  client.publish("emg/data", msg);
  delay(1000);
}

void reconnect() {
  while (!client.connected()) {
    if (client.connect("ESP32Client")) {
      client.subscribe("emg/data");
    } else {
      delay(5000);
    }
  }
}

#include <WiFi.h>
#include <PubSubClient.h>

const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";
const char* mqtt_server = "your_computer_IP";

WiFiClient espClient;
PubSubClient client(espClient);

void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  client.setServer(mqtt_server, 1883);
}

void loop() {
  if (!client.connected()) {
    reconnect();
  }
  client.loop();

  // Read EMG sensor data
  int emgValue = analogRead(34);
  char msg[50];
  sprintf(msg, "EMG: %d", emgValue);

  client.publish("emg/data", msg);
  delay(1000);
}

void reconnect() {
  while (!client.connected()) {
    if (client.connect("ESP32Client")) {
      client.subscribe("emg/data");
    } else {
      delay(5000);
    }
  }
}

4 replies

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