add files

switched them back to nano code

BT_RFID_V3.ino

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+
+#include <Wire.h>
+#include <LiquidCrystal_I2C.h> //this i meant for AVR I guess but everyone seems to use the same library on esp32 so not worried
+#include <SoftwareSerial.h> //need to switch to hardware serial just installed extra library so code would build
+/*
+ * BT_RFID_V1.ino 
+ * 11/27/2018
+ * By JaydenN117
+ * 
+ * BT_RFID_V3.ino 
+ * Last Updated
+ * 4/1/2020 *
+ * 
+ * Bluetooth RFID reader for cattle tags
+ * for rfidRW-E-TTL. It uses an arduino nano as
+ * well as a 4 pin lcd and HC-05
+ * 
+ * Important Links
+ * =============================================
+ * About rfidRW-E-TTL module
+ * http://www.priority1design.com.au/rfidrw-e-ttl.pdf
+ * 
+ * RFID code is inspired by code here
+ * https://forum.arduino.cc/index.php?topic=253703.0
+ *
+ * Code for reading voltaged inspired by
+ * https://startingelectronics.org/articles/arduino/measuring-voltage-with-arduino/
+ * 
+ * Bluetooth tools
+ * http://www.dsdtech-global.com/2017/11/dsd-tech-bluetooth-config-tool.html
+ * 
+ *
+ */
+/*
+ * Set pins below
+ *
+ *
+ *
+ * TOOL FOR GETTING I2C ADDRESS for LCD
+ * https://playground.arduino.cc/Main/sourceblock_1/index.txt?action=sourceblock&num=1
+ */
+SoftwareSerial Rfid(3,4); //rfidRW-E-TTL software serial
+LiquidCrystal_I2C lcd(0x27 ,16,2);//lcd use tool to get address replace 0x3F with address for your lcd if different
+int buzzer = 5; //buzzer pin
+int blueLED = 8; //bluetooth led light
+int greenLED = 7; // ready led light
+int redLED = 6; // scan led light
+int btState = 9; //bluetooth state pin //need to remove from code
+int vibrate = A1; //vibration motor pin 
+int battery = A0; //use to detect voltage
+
+/*
+ * Other things to change based on wand
+ * time,name, and wands bluetooth pin
+ * if not configure it is HC_05 with 1234 as pin
+ */
+String wandNumber = "3";//wand number in rare case of two wands so theres different name
+String btName = "BT_RFID_" + wandNumber; //name displayed on lcd wand number follows
+String btPin = ""; //pin displayed on lcd
+//custom boot lines
+String line1 = "BT RFID V3";
+String line2 = "";
+//Some other things you can configure if necessary
+boolean lcdSleepEnabled = true; //set false to keep lcd on
+boolean indicators = true; //show bluetooth and battery on screen(really buggy voltage is all over with RFID module and bluetooth is not working quite right
+boolean displayVoltage = false; //ahows voltage on lcd 
+boolean quickBoot = false; //skips fancy startup
+boolean bluetoothState = true; // Wand supports bluetooth state
+int readings =100; //how many times read to average voltage 1000 more stable 10 updates very frequently
+long sleepTime = 30000; // sleep time variable
+//other variables controlled by code
+boolean clearLCD = true; //lcd clear control during new scan
+int state = 0; //bluetooth state value
+long previousMillis; //part of sleep timer
+char c;
+float voltage; //battery voltage 
+float voltageTotal; // voltage total used in averaging
+int voltageReadings = 0; //how times voltage was read
+float voltageAverage = -1; //average voltage starts at so program will know to display "?"
+void setup() {
+
+  start(); //start code
+}
+
+void loop() {
+  if (bluetoothState){
+    state = digitalRead(btState); //reads state pin
+    digitalWrite(blueLED, state); //writes state to LED
+  }
+  voltage = ((analogRead(battery)*5.0)/1024)*2.0; //voltage
+  voltageTotal+=voltage; //
+  voltageReadings++;
+  scan(); //run scan code
+  if (sleepTimer() && lcdSleepEnabled){ //checks if time is over 30 and lcd sleep is enabled
+    sleeplcd(); //if true sleep lcd
+  }
+  else{
+    //no need to write indicators on lcd without backlight on
+    if (indicators && clearLCD){ //if it is Ok to clearLCD we also know it is not currently printing so I check clearLCD
+       batteryAndBluetooth(); //show bluetooth and battery information
+    }
+    if (displayVoltage && clearLCD){ //shows voltage
+      showVoltage();
+    }
+  }
+  if (voltageReadings>=readings){
+    voltageAverage = voltageTotal/voltageReadings;
+    voltageReadings = 0;
+    voltageTotal = 0;
+  }
+}