Arduino - snippets

WemosD1-A1-pin-voltage-reading.cpp

#include <Arduino.h>

const int analogVoltagePin = A0; // Analog input pin for voltage measurement

void setup()
{
  Serial.begin(9600); // Initialize serial communication
}

void loop()
{
  int sensorValueVoltage = analogRead(analogVoltagePin); // Read the analog input for voltage

  // Convert the sensor value to voltage (assuming a 5V reference for the ADC)
  float voltage = sensorValueVoltage * (5.0 / 1023.0); // 5.0V is the reference voltage, 1023 is the maximum value for a 10-bit ADC

  Serial.print("Voltage: ");
  Serial.print(voltage);
  Serial.println(" V");

  delay(1000); // Delay for readability, adjust as needed
}

WemosD1-A1-SPIFFS-formating.cpp

#include "FS.h"

String realSize = String(ESP.getFlashChipRealSize());
String ideSize = String(ESP.getFlashChipSize());
bool flashCorrectlyConfigured = realSize.equals(ideSize);

void setup() {
  Serial.begin(115200);
  if(flashCorrectlyConfigured) SPIFFS.begin();
  else Serial.println("flash incorrectly configured, SPIFFS cannot start, IDE size: " + ideSize + ", real size: " + realSize);
  bool format_success = SPIFFS.format();
  if(format_success) Serial.println("formating was successful");
  else Serial.println("formating failed");
}

void loop() {
}