113 lines
2.5 KiB
C++
113 lines
2.5 KiB
C++
#include "SSD1306.h" // alias for `#include "SSD1306Wire.h"`
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#include <WiFi.h>
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#include <SPI.h>
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#include <LoRa.h>
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// #include "SSD1306.h"
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#include<Arduino.h>
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//OLED pins to ESP32 GPIOs via this connecthin:
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//OLED_SDA GPIO4
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//OLED_SCL GPIO15
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//OLED_RST GPIO16
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SSD1306 display(0x3c, 4, 15);
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// WIFI_LoRa_32 ports
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// GPIO5 SX1278 SCK
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// GPIO19 SX1278 MISO
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// GPIO27 SX1278 MOSI
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// GPIO18 SX1278 CS
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// GPIO14 SX1278 RESET
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// GPIO26 SX1278 IRQ(Interrupt Request)
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#define SS 18
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#define RST 14
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#define DI0 26
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// #define BAND 429E6 //915E6
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// #define BAND 434500000.00
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#define BAND 434500000.00
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#define spreadingFactor 9
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// #define SignalBandwidth 62.5E3
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#define SignalBandwidth 31.25E3
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#define preambleLength 8
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#define codingRateDenominator 8
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int counter = 0;
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void setup() {
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pinMode(25,OUTPUT); //Send success, LED will bright 1 second
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pinMode(16,OUTPUT);
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digitalWrite(16, LOW); // set GPIO16 low to reset OLED
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delay(50);
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digitalWrite(16, HIGH);
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Serial.begin(115200);
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while (!Serial); //If just the the basic function, must connect to a computer
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// Initialising the UI will init the display too.
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display.init();
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display.flipScreenVertically();
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display.setFont(ArialMT_Plain_10);
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display.setTextAlignment(TEXT_ALIGN_LEFT);
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display.drawString(5,5,"LoRa Sender");
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display.display();
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SPI.begin(5,19,27,18);
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LoRa.setPins(SS,RST,DI0);
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Serial.println("LoRa Sender");
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if (!LoRa.begin(BAND)) {
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Serial.println("Starting LoRa failed!");
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while (1);
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}
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Serial.print("LoRa Spreading Factor: ");
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Serial.println(spreadingFactor);
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LoRa.setSpreadingFactor(spreadingFactor);
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Serial.print("LoRa Signal Bandwidth: ");
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Serial.println(SignalBandwidth);
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LoRa.setSignalBandwidth(SignalBandwidth);
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LoRa.setCodingRate4(codingRateDenominator);
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LoRa.setPreambleLength(preambleLength);
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Serial.println("LoRa Initial OK!");
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display.drawString(5,20,"LoRa Initializing OK!");
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display.display();
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delay(2000);
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}
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void loop() {
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Serial.print("Sending packet: ");
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Serial.println(counter);
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display.clear();
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display.setFont(ArialMT_Plain_16);
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display.drawString(3, 5, "Sending packet ");
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display.drawString(50, 30, String(counter));
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display.display();
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// send packet
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LoRa.beginPacket();
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LoRa.print("Hello..");
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LoRa.print(counter);
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LoRa.endPacket();
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counter++;
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digitalWrite(25, HIGH); // turn the LED on (HIGH is the voltage level)
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delay(1000); // wait for a second
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digitalWrite(25, LOW); // turn the LED off by making the voltage LOW
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delay(1000); // wait for a second
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// delay(3000);
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}
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