I can't get the ttgo to read the temp sensor. I know the sensor is good because I can read it with a nano.
I'm hooking up 3v gnd and sensor with 2.2 resistor on pin 34 to 3v. I've been looking at this for a few days now and I'm still stumped.
hopefully I'll get the code uploaded
/*********
Rui Santos
Complete project details at https://RandomNerdTutorials.com/esp32-lora-sensor-web-server/
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files.
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
*********/
//Libraries for LoRa
#include <SPI.h>
#include <LoRa.h>
//Libraries for OLED Display
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
//Libraries for DS18B20
#include <OneWire.h>
#include <DallasTemperature.h>
//define the pins used by the LoRa transceiver module
#define SCK 5
#define MISO 19
#define MOSI 27
#define SS 18
#define RST 14
#define DIO0 26
//433E6 for Asia
//866E6 for Europe
//915E6 for North America
#define BAND 915E6
//OLED pins
#define OLED_SDA 4
#define OLED_SCL 15
#define OLED_RST 16
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
// Define to which pin the 1-Wire bus is connected:
#define ONE_WIRE_BUS 34
// Create a new instance of the oneWire class to communicate with any OneWire device:
OneWire oneWire(ONE_WIRE_BUS);
// Pass the oneWire reference to DallasTemperature library:
DallasTemperature sensors(&oneWire);
//packet counter
int readingID = 0;
int counter = 0;
String LoRaMessage = "";
float temperature = 0;
float temperature1 = 0;
float temperature2 = 0;
float temperature3 = 0;
float temperature4 = 0;
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RST);
//Initialize OLED display
void startOLED(){
//reset OLED display via software
pinMode(OLED_RST, OUTPUT);
digitalWrite(OLED_RST, LOW);
delay(20);
digitalWrite(OLED_RST, HIGH);
//initialize OLED
Wire.begin(OLED_SDA, OLED_SCL);
if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3c, false, false)) { // Address 0x3C for 128x32
Serial.println(F("SSD1306 allocation failed"));
for(;;); // Don't proceed, loop forever
}
display.clearDisplay();
display.setTextColor(WHITE);
display.setTextSize(1);
display.setCursor(0,0);
display.print("LORA SENDER");
}
//Initialize LoRa module
void startLoRA(){
//SPI LoRa pins
SPI.begin(SCK, MISO, MOSI, SS);
//setup LoRa transceiver module
LoRa.setPins(SS, RST, DIO0);
while (!LoRa.begin(BAND) && counter < 10) {
Serial.print(".");
counter++;
delay(500);
}
if (counter == 10) {
// Increment readingID on every new reading
readingID++;
Serial.println("Starting LoRa failed!");
}
Serial.println("LoRa Initialization OK!");
display.setCursor(0,10);
display.clearDisplay();
display.print("LoRa Initializing OK!");
display.display();
delay(2000);
}
void getReadings()
{
sensors.requestTemperatures();
float temperatureC = sensors.getTempCByIndex(0);
float temperatureF = sensors.getTempFByIndex(0);
temperature = (temperatureF);
}
void sendReadings()
{
LoRaMessage = String(readingID) + "/" + String(temperature) + "&" + String(humidity) + "#" + String(pressure);
//Send LoRa packet to receiver
LoRa.beginPacket();
LoRa.print(LoRaMessage);
LoRa.endPacket();
display.clearDisplay();
display.setCursor(0,0);
display.setTextSize(1);
display.print("LoRa packet sent!");
display.setCursor(0,20);
display.print("Temperature:");
display.setCursor(72,20);
display.print(temperature);
display.setCursor(0,30);
display.print("Humidity:");
display.setCursor(54,30);
display.print(humidity);
display.setCursor(0,40);
display.print("Pressure:");
display.setCursor(54,40);
display.print(pressure);
display.setCursor(0,50);
display.print("Reading ID:");
display.setCursor(66,50);
display.print(readingID);
display.display();
Serial.print("Sending packet: ");
Serial.println(readingID);
readingID++;
}
void setup()
{
//pinMode(oneWireBus, INPUT_PULLUP); // sets the digital pin 37 as input
//initialize Serial Monitor
Serial.begin(115200);
startOLED();
// Start the DS18B20 sensor
sensors.begin();
startLoRA();
}
void loop()
{
getReadings();
sendReadings();
delay(10000);
}
