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Simplified (no helper functions)

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This commit is contained in:
Malkok Gindrat
2026-06-02 07:14:14 +02:00
parent 9ec763dc07
commit b0070ed1b9
1 changed files with 203 additions and 179 deletions
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src/main.cpp
+203 -179
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@@ -5,239 +5,263 @@
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
// LoRa pins - LilyGO T3S3 SX1262
static const int PIN_LORA_SCK = 5;
static const int PIN_LORA_MISO = 3;
static const int PIN_LORA_MOSI = 6;
static const int PIN_LORA_CS = 7;
static const int PIN_LORA_RST = 8;
static const int PIN_LORA_DIO1 = 33;
static const int PIN_LORA_BUSY = 34;
static const int mgLoraSck = 5;
static const int mgLoraMiso = 3;
static const int mgLoraMosi = 6;
static const int mgLoraCs = 7;
static const int mgLoraRst = 8;
static const int mgLoraDio1 = 33;
static const int mgLoraBusy = 34;
// OLED pins - LilyGO T3S3 OLED
static const int OLED_SDA = 18;
static const int OLED_SCL = 17;
static const int OLED_ADDR = 0x3C;
static const int SCREEN_WIDTH = 128;
static const int SCREEN_HEIGHT = 64;
static const int mgOledSda = 18;
static const int mgOledScl = 17;
static const int mgOledAddr = 0x3C;
static const int mgScreenWidth = 128;
static const int mgScreenHeight = 64;
// ACTIVE PROFILE (Shelly / custom LoRa)
static const float LORA_FREQ_MHZ = 865.000;
static const float LORA_BW_KHZ = 125.0;
static const uint8_t LORA_SF = 12;
static const uint8_t LORA_CR = 5;
static const uint8_t LORA_SYNC_WORD = 0x12;
static const int8_t LORA_TX_POWER = 10;
static const uint16_t LORA_PREAMBLE = 10;
static const float LORA_TCXO_VOLTAGE = 1.6;
static const bool LORA_USE_LDO = false;
static const bool LORA_USE_CRC = false;
static const bool LORA_EXPLICIT_HDR = true;
// Shelly HB9GPU
static const float mgLoraFreqMHz = 865.000;
static const float mgLoraBwKHz = 125.0;
static const uint8_t mgLoraSf = 12;
static const uint8_t mgLoraCr = 5;
static const uint8_t mgLoraSyncWord = 0x12;
static const int8_t mgLoraTxPower = 10;
static const uint16_t mgLoraPreamble = 10;
static const float mgLoraTcxoVoltage = 1.6;
static const bool mgLoraUseLdo = false;
static const bool mgLoraUseCrc = false;
static const bool mgLoraExplicitHeader = true;
// MESHCORE SWITZERLAND PROFILE (COMMENTED)
// MeshCore Switzerland profile
/*
static const float LORA_FREQ_MHZ = 869.618;
static const float LORA_BW_KHZ = 62.5;
static const uint8_t LORA_SF = 8;
static const uint8_t LORA_CR = 8;
static const uint8_t LORA_SYNC_WORD = 0x34;
static const int8_t LORA_TX_POWER = 10;
static const uint16_t LORA_PREAMBLE = 10;
static const float LORA_TCXO_VOLTAGE = 1.6;
static const bool LORA_USE_LDO = false;
static const bool LORA_USE_CRC = true;
static const bool LORA_EXPLICIT_HDR = true;
static const float mgLoraFreqMHz = 869.618;
static const float mgLoraBwKHz = 62.5;
static const uint8_t mgLoraSf = 8;
static const uint8_t mgLoraCr = 8;
static const uint8_t mgLoraSyncWord = 0x34;
static const int8_t mgLoraTxPower = 10;
static const uint16_t mgLoraPreamble = 10;
static const float mgLoraTcxoVoltage = 1.6;
static const bool mgLoraUseLdo = false;
static const bool mgLoraUseCrc = true;
static const bool mgLoraExplicitHeader = true;
*/
Adafruit_SSD1306 mgDisplay(mgScreenWidth, mgScreenHeight, &Wire, -1);
SX1262 mgRadio = new Module(mgLoraCs, mgLoraDio1, mgLoraRst, mgLoraBusy);
// Objects
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
SX1262 radio = new Module(PIN_LORA_CS, PIN_LORA_DIO1, PIN_LORA_RST, PIN_LORA_BUSY);
// Runtime state
String lastMsg = "none";
float lastRssi = 0.0;
float lastSnr = 0.0;
unsigned long rxCount = 0;
unsigned long lastIdleRefresh = 0;
unsigned long showPacketUntil = 0;
// Helpers
String formatCR(uint8_t cr) {
return "4/" + String(cr);
}
String formatHexByte(uint8_t value) {
char buf[5];
snprintf(buf, sizeof(buf), "%02X", value);
return String(buf);
}
// Draw one line safely
void drawLine(int x, int y, const String& text) {
display.setCursor(x, y);
display.print(text);
}
// Simple text wrapper for packet display
void drawWrappedText(const String& text, int startY, int maxLines) {
const int charsPerLine = 21; // approx for 128 px at text size 1
int len = text.length();
int index = 0;
int line = 0;
while (index < len && line < maxLines) {
String chunk = text.substring(index, min(index + charsPerLine, len));
drawLine(0, startY + line * 8, chunk);
index += charsPerLine;
line++;
}
}
void drawListeningScreen() {
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(SSD1306_WHITE);
drawLine(0, 0, "Listening");
drawLine(70, 0, String(rxCount) + " pk");
drawLine(0, 10, "F:" + String(LORA_FREQ_MHZ, 3));
drawLine(0, 20, "BW:" + String(LORA_BW_KHZ, 1) + " SF:" + String(LORA_SF));
drawLine(0, 30, "CR:" + formatCR(LORA_CR) + " SW:0x" + formatHexByte(LORA_SYNC_WORD));
drawLine(0, 40, "Last:");
drawWrappedText(lastMsg, 48, 2);
display.display();
}
void drawPacketScreen() {
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(SSD1306_WHITE);
drawLine(0, 0, "PACKET RECEIVED");
drawLine(0, 10, "RSSI:" + String(lastRssi, 1) + " SNR:" + String(lastSnr, 1));
drawLine(0, 20, "Len:" + String(lastMsg.length()));
drawLine(0, 32, "Text:");
drawWrappedText(lastMsg, 40, 3);
display.display();
}
void drawErrorScreen(const String& title, int code) {
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(SSD1306_WHITE);
drawLine(0, 0, title);
drawLine(0, 12, "code: " + String(code));
display.display();
}
String mgLastMsg = "none";
float mgLastRssi = 0.0;
float mgLastSnr = 0.0;
unsigned long mgRxCount = 0;
unsigned long mgLastIdleRefresh = 0;
unsigned long mgShowPacketUntil = 0;
void setup() {
Serial.begin(115200);
delay(1500);
Wire.begin(OLED_SDA, OLED_SCL);
Wire.begin(mgOledSda, mgOledScl);
if (!display.begin(SSD1306_SWITCHCAPVCC, OLED_ADDR)) {
if (!mgDisplay.begin(SSD1306_SWITCHCAPVCC, mgOledAddr)) {
Serial.println("OLED init failed");
while (true) delay(1000);
}
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(SSD1306_WHITE);
drawLine(0, 0, "Booting...");
display.display();
mgDisplay.clearDisplay();
mgDisplay.setTextSize(1);
mgDisplay.setTextColor(SSD1306_WHITE);
mgDisplay.setCursor(0, 0);
mgDisplay.print("Booting...");
mgDisplay.display();
SPI.begin(PIN_LORA_SCK, PIN_LORA_MISO, PIN_LORA_MOSI, PIN_LORA_CS);
SPI.begin(mgLoraSck, mgLoraMiso, mgLoraMosi, mgLoraCs);
Serial.println();
Serial.println("Starting LoRa receiver...");
int state = radio.begin(
LORA_FREQ_MHZ,
LORA_BW_KHZ,
LORA_SF,
LORA_CR,
LORA_SYNC_WORD,
LORA_TX_POWER,
LORA_PREAMBLE,
LORA_TCXO_VOLTAGE,
LORA_USE_LDO
int mgState = mgRadio.begin(
mgLoraFreqMHz,
mgLoraBwKHz,
mgLoraSf,
mgLoraCr,
mgLoraSyncWord,
mgLoraTxPower,
mgLoraPreamble,
mgLoraTcxoVoltage,
mgLoraUseLdo
);
if (state != RADIOLIB_ERR_NONE) {
if (mgState != RADIOLIB_ERR_NONE) {
Serial.print("radio.begin failed, code ");
Serial.println(state);
drawErrorScreen("LoRa init failed", state);
Serial.println(mgState);
mgDisplay.clearDisplay();
mgDisplay.setCursor(0, 0);
mgDisplay.print("LoRa init failed");
mgDisplay.setCursor(0, 12);
mgDisplay.print("code: ");
mgDisplay.print(mgState);
mgDisplay.display();
while (true) delay(1000);
}
if (LORA_EXPLICIT_HDR) {
state = radio.explicitHeader();
if (mgLoraExplicitHeader) {
mgState = mgRadio.explicitHeader();
} else {
state = radio.implicitHeader(LORA_PREAMBLE);
mgState = mgRadio.implicitHeader(mgLoraPreamble);
}
if (state != RADIOLIB_ERR_NONE) {
if (mgState != RADIOLIB_ERR_NONE) {
Serial.print("header mode failed, code ");
Serial.println(state);
drawErrorScreen("Header config failed", state);
Serial.println(mgState);
mgDisplay.clearDisplay();
mgDisplay.setCursor(0, 0);
mgDisplay.print("Header failed");
mgDisplay.setCursor(0, 12);
mgDisplay.print("code: ");
mgDisplay.print(mgState);
mgDisplay.display();
while (true) delay(1000);
}
state = radio.setCRC(LORA_USE_CRC);
if (state != RADIOLIB_ERR_NONE) {
mgState = mgRadio.setCRC(mgLoraUseCrc);
if (mgState != RADIOLIB_ERR_NONE) {
Serial.print("CRC config failed, code ");
Serial.println(state);
drawErrorScreen("CRC config failed", state);
Serial.println(mgState);
mgDisplay.clearDisplay();
mgDisplay.setCursor(0, 0);
mgDisplay.print("CRC failed");
mgDisplay.setCursor(0, 12);
mgDisplay.print("code: ");
mgDisplay.print(mgState);
mgDisplay.display();
while (true) delay(1000);
}
Serial.println("Listening...");
drawListeningScreen();
mgDisplay.clearDisplay();
mgDisplay.setCursor(0, 0);
mgDisplay.print("Listening");
mgDisplay.setCursor(70, 0);
mgDisplay.print(mgRxCount);
mgDisplay.print(" pk");
mgDisplay.setCursor(0, 10);
mgDisplay.print("F:");
mgDisplay.print(mgLoraFreqMHz, 3);
mgDisplay.setCursor(0, 20);
mgDisplay.print("BW:");
mgDisplay.print(mgLoraBwKHz, 1);
mgDisplay.print(" SF:");
mgDisplay.print(mgLoraSf);
mgDisplay.setCursor(0, 30);
mgDisplay.print("CR:4/");
mgDisplay.print(mgLoraCr);
mgDisplay.print(" SW:0x");
if (mgLoraSyncWord < 16) mgDisplay.print("0");
mgDisplay.print(mgLoraSyncWord, HEX);
mgDisplay.setCursor(0, 40);
mgDisplay.print("Last:");
mgDisplay.setCursor(0, 50);
mgDisplay.print(mgLastMsg.substring(0, 21));
mgDisplay.display();
}
void loop() {
String str;
int state = radio.receive(str);
String mgStr;
int mgState = mgRadio.receive(mgStr);
if (state == RADIOLIB_ERR_NONE) {
lastMsg = str;
lastRssi = radio.getRSSI();
lastSnr = radio.getSNR();
rxCount++;
if (mgState == RADIOLIB_ERR_NONE) {
mgLastMsg = mgStr;
mgLastRssi = mgRadio.getRSSI();
mgLastSnr = mgRadio.getSNR();
mgRxCount++;
Serial.print("RX: ");
Serial.println(lastMsg);
Serial.println(mgLastMsg);
Serial.print("RSSI: ");
Serial.println(lastRssi);
Serial.println(mgLastRssi);
Serial.print("SNR: ");
Serial.println(lastSnr);
Serial.println(mgLastSnr);
Serial.println();
drawPacketScreen();
showPacketUntil = millis() + 2500; // show packet screen for 2.5 s
}
else if (state != RADIOLIB_ERR_RX_TIMEOUT) {
mgDisplay.clearDisplay();
mgDisplay.setCursor(0, 0);
mgDisplay.print("PACKET RECEIVED");
mgDisplay.setCursor(0, 10);
mgDisplay.print("RSSI:");
mgDisplay.print(mgLastRssi, 1);
mgDisplay.print(" SNR:");
mgDisplay.print(mgLastSnr, 1);
mgDisplay.setCursor(0, 20);
mgDisplay.print("Len:");
mgDisplay.print(mgLastMsg.length());
mgDisplay.setCursor(0, 32);
mgDisplay.print("Text:");
mgDisplay.setCursor(0, 40);
mgDisplay.print(mgLastMsg.substring(0, 21));
mgDisplay.setCursor(0, 50);
mgDisplay.print(mgLastMsg.substring(21, 42));
mgDisplay.display();
mgShowPacketUntil = millis() + 2500;
} else if (mgState != RADIOLIB_ERR_RX_TIMEOUT) {
Serial.print("Receive failed, code ");
Serial.println(state);
Serial.println(mgState);
}
// after packet screen timeout, return to listening screen
if (millis() > showPacketUntil) {
if (millis() - lastIdleRefresh > 500) {
drawListeningScreen();
lastIdleRefresh = millis();
}
if (millis() > mgShowPacketUntil && millis() - mgLastIdleRefresh > 500) {
mgDisplay.clearDisplay();
mgDisplay.setCursor(0, 0);
mgDisplay.print("Listening");
mgDisplay.setCursor(70, 0);
mgDisplay.print(mgRxCount);
mgDisplay.print(" pk");
mgDisplay.setCursor(0, 10);
mgDisplay.print("F:");
mgDisplay.print(mgLoraFreqMHz, 3);
mgDisplay.setCursor(0, 20);
mgDisplay.print("BW:");
mgDisplay.print(mgLoraBwKHz, 1);
mgDisplay.print(" SF:");
mgDisplay.print(mgLoraSf);
mgDisplay.setCursor(0, 30);
mgDisplay.print("CR:4/");
mgDisplay.print(mgLoraCr);
mgDisplay.print(" SW:0x");
if (mgLoraSyncWord < 16) mgDisplay.print("0");
mgDisplay.print(mgLoraSyncWord, HEX);
mgDisplay.setCursor(0, 40);
mgDisplay.print("Last:");
mgDisplay.setCursor(0, 50);
mgDisplay.print(mgLastMsg.substring(0, 21));
mgDisplay.display();
mgLastIdleRefresh = millis();
}
}