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rdz_ttgo_sonde_dl9rdz
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rdz_ttgo_sonde_dl9rdz/RX_FSK/RX_FSK.ino

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C++
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#include <WiFi.h>
#include <ESPAsyncWebServer.h>
#include <SPIFFS.h>
#include <U8x8lib.h>
#include <SPI.h>
#include <SX1278FSK.h>
#include <Sonde.h>
#include <Scanner.h>
//#include <RS41.h>
//#include <DFM.h>
#define LORA_LED 9
// I2C OLED Display works with SSD1306 driver
#define OLED_SDA 4
#define OLED_SCL 15
#define OLED_RST 16
// UNCOMMENT one of the constructor lines below
U8X8_SSD1306_128X64_NONAME_SW_I2C u8x8(/* clock=*/ OLED_SCL, /* data=*/ OLED_SDA, /* reset=*/ OLED_RST); // Unbuffered, basic graphics, software I2C
//U8G2_SSD1306_128X64_NONAME_1_SW_I2C Display(U8G2_R0, /* clock=*/ OLED_SCL, /* data=*/ OLED_SDA, /* reset=*/ OLED_RST); // Page buffer, SW I2C
//U8G2_SSD1306_128X64_NONAME_F_SW_I2C Display(U8G2_R0, /* clock=*/ OLED_SCL, /* data=*/ OLED_SDA, /* reset=*/ OLED_RST); // Full framebuffer, SW I2C
int e;
AsyncWebServer server(80);
// Set LED GPIO
const int ledPin = 2;
// Stores LED state
String ledState;
// Replaces placeholder with LED state value
String processor(const String& var){
Serial.println(var);
if(var == "STATE"){
if(digitalRead(ledPin)){
ledState = "ON";
}
else{
ledState = "OFF";
}
Serial.print(ledState);
return ledState;
}
return String();
}
void SetupAsyncServer() {
// Route for root / web page
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(200, "text/plain", "Hello, world");
});
server.on("/index.html", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(SPIFFS, "/index.html", String(), false, processor);
});
// Route to load style.css file
server.on("/style.css", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(SPIFFS, "/style.css", "text/css");
});
// Route to set GPIO to HIGH
server.on("/on", HTTP_GET, [](AsyncWebServerRequest *request){
digitalWrite(ledPin, HIGH);
request->send(SPIFFS, "/index.html", String(), false, processor);
});
// Route to set GPIO to LOW
server.on("/off", HTTP_GET, [](AsyncWebServerRequest *request){
digitalWrite(ledPin, LOW);
request->send(SPIFFS, "/index.html", String(), false, processor);
});
// Start server
server.begin();
}
int nNetworks;
struct { String id; String pw; } networks[20];
void setupWifiList() {
File file = SPIFFS.open("/networks.txt", "r");
if(!file){
Serial.println("There was an error opening the file '/networks.txt' for reading");
return;
}
int i=0;
while(file.available()) {
String line = file.readStringUntil('\n');
if(!file.available()) break;
networks[i].id = line;
networks[i].pw = file.readStringUntil('\n');
i++;
}
nNetworks = i;
Serial.print(i); Serial.println(" networks in networks.txt\n");
for(int j=0; j<i; j++) { Serial.print(networks[j].id); Serial.print(": "); Serial.println(networks[j].pw); }
}
const char *fetchWifiPw(const char *id) {
for(int i=0; i<nNetworks; i++) {
Serial.print("Comparing '");
Serial.print(id);
Serial.print("' and '");
Serial.print(networks[i].id.c_str());
Serial.println("'");
if(strcmp(id,networks[i].id.c_str())==0) return networks[i].pw.c_str();
}
return NULL;
}
enum KeyPress { KP_NONE=0, KP_SHORT, KP_DOUBLE, KP_MID, KP_LONG };
struct Button {
const uint8_t PIN;
uint32_t numberKeyPresses;
KeyPress pressed;
unsigned long press_ts;
boolean doublepress;
};
Button button1 = {0, 0, KP_NONE, 0, false};
void IRAM_ATTR buttonISR() {
if(digitalRead(0)==0) { // Button down
if(millis()-button1.press_ts<500) {
// Double press
button1.doublepress = true;
} else {
button1.doublepress = false;
}
button1.press_ts = millis();
} else { //Button up
unsigned int elapsed = millis()-button1.press_ts;
if(elapsed>1500) {
if(elapsed<4000) { button1.pressed=KP_MID; }
else { button1.pressed=KP_LONG; }
} else {
if(button1.doublepress) button1.pressed=KP_DOUBLE;
else button1.pressed=KP_SHORT;
}
button1.numberKeyPresses += 1;
button1.press_ts = millis();
}
}
int getKeyPress() {
KeyPress p = button1.pressed;
button1.pressed = KP_NONE;
return p;
}
int hasKeyPress() {
return button1.pressed;
}
void setup()
{
// Open serial communications and wait for port to open:
Serial.begin(115200);
u8x8.begin();
pinMode(LORA_LED, OUTPUT);
// Initialize SPIFFS
if(!SPIFFS.begin(true)){
Serial.println("An Error has occurred while mounting SPIFFS");
return;
}
setupWifiList();
#if 0
if(rs41.setFrequency(402700000)==0) {
Serial.println(F("Setting freq: SUCCESS "));
} else {
Serial.println(F("Setting freq: ERROR "));
}
float f = sx1278.getFrequency();
Serial.print("Frequency set to ");
Serial.println(f);
#endif
sx1278.setLNAGain(0); //-48);
int gain = sx1278.getLNAGain();
Serial.print("RX LNA Gain is ");
Serial.println(gain);
// Print a success message
Serial.println(F("sx1278 configured finished"));
Serial.println();
Serial.println("Setup finished");
// int returnValue = pthread_create(&wifithread, NULL, wifiloop, (void *)0);
// if (returnValue) {
// Serial.println("An error has occurred");
// }
// xTaskCreate(mainloop, "MainServer", 10240, NULL, 10, NULL);
// Handle button press
attachInterrupt(0, buttonISR, CHANGE);
sonde.clearSonde();
sonde.addSonde(402.300, STYPE_RS41);
sonde.addSonde(402.700, STYPE_RS41);
sonde.addSonde(403.450, STYPE_DFM09);
/// not here, done by sonde.setup(): rs41.setup();
sonde.setup();
}
enum MainState { ST_DECODER, ST_SCANNER, ST_SPECTRUM, ST_WIFISCAN };
static MainState mainState = ST_DECODER;
void enterMode(int mode) {
mainState = (MainState)mode;
sonde.clearDisplay();
}
void loopDecoder() {
switch(getKeyPress()) {
case KP_SHORT:
sonde.nextConfig();
break;
case KP_DOUBLE:
enterMode(ST_SCANNER);
return;
case KP_MID:
enterMode(ST_SPECTRUM);
return;
case KP_LONG:
enterMode(ST_WIFISCAN);
return;
}
// sonde knows the current type and frequency, and delegates to the right decoder
sonde.receiveFrame();
sonde.updateDisplay();
}
#define SCAN_MAXTRIES 1
void loopScanner() {
sonde.updateDisplayScanner();
static int tries=0;
switch(getKeyPress()) {
case KP_SHORT:
enterMode(ST_DECODER);
return;
case KP_DOUBLE: break; /* ignored */
case KP_MID:
enterMode(ST_SPECTRUM);
return;
case KP_LONG:
enterMode(ST_WIFISCAN);
return;
}
// receiveFrame returns 0 on success, 1 on timeout
int res = sonde.receiveFrame(); // Maybe instead of receiveFrame, just detect if right type is present? TODO
Serial.print("Scanner: receiveFrame returned");
Serial.println(res);
if(res==0) {
enterMode(ST_DECODER);
return;
}
if(++tries>=SCAN_MAXTRIES) {
sonde.nextConfig();
tries = 0;
}
}
void loopSpectrum() {
switch(getKeyPress()) {
case KP_SHORT: /* move selection of peak, TODO */
sonde.nextConfig(); // TODO: Should be set specific frequency
enterMode(ST_DECODER);
return;
case KP_MID: /* restart, TODO */ break;
case KP_LONG:
enterMode(ST_WIFISCAN);
return;
case KP_DOUBLE: /* ignore */ break;
default: break;
}
scanner.scan();
scanner.plotResult();
}
String translateEncryptionType(wifi_auth_mode_t encryptionType) {
switch (encryptionType) {
case (WIFI_AUTH_OPEN):
return "Open";
case (WIFI_AUTH_WEP):
return "WEP";
case (WIFI_AUTH_WPA_PSK):
return "WPA_PSK";
case (WIFI_AUTH_WPA2_PSK):
return "WPA2_PSK";
case (WIFI_AUTH_WPA_WPA2_PSK):
return "WPA_WPA2_PSK";
case (WIFI_AUTH_WPA2_ENTERPRISE):
return "WPA2_ENTERPRISE";
}
}
static char* _scan[2]={"/","\\"};
void loopWifiScan() {
u8x8.setFont(u8x8_font_chroma48medium8_r);
u8x8.drawString(0,0,"WiFi Scan...");
int line=0;
int cnt=0;
WiFi.mode(WIFI_STA);
const char *id, *pw;
int n = WiFi.scanNetworks();
for (int i = 0; i < n; i++) {
Serial.print("Network name: ");
Serial.println(WiFi.SSID(i));
u8x8.drawString(0,1+line,WiFi.SSID(i).c_str());
line = (line+1)%5;
Serial.print("Signal strength: ");
Serial.println(WiFi.RSSI(i));
Serial.print("MAC address: ");
Serial.println(WiFi.BSSIDstr(i));
Serial.print("Encryption type: ");
String encryptionTypeDescription = translateEncryptionType(WiFi.encryptionType(i));
Serial.println(encryptionTypeDescription);
Serial.println("-----------------------");
id=WiFi.SSID(i).c_str();
pw=fetchWifiPw(id);
if(pw) break;
}
if(!pw) { id="test"; pw="test"; }
Serial.print("Connecting to: "); Serial.println(id);
u8x8.drawString(0,6, "Conn:");
u8x8.drawString(6,6, id);
WiFi.begin(id, pw);
while(WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
u8x8.drawString(15,7,_scan[cnt&1]);
cnt++;
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
sonde.setIP(WiFi.localIP().toString().c_str());
sonde.updateDisplayIP();
SetupAsyncServer();
delay(5000);
mainState=ST_SPECTRUM;
}
void loop() {
Serial.println("Running main loop");
switch(mainState) {
case ST_DECODER: loopDecoder(); break;
case ST_SCANNER: loopScanner(); break;
case ST_SPECTRUM: loopSpectrum(); break;
case ST_WIFISCAN: loopWifiScan(); break;
}
#if 0
//wifiloop(NULL);
//e = dfm.receiveFrame();
//e = rs41.receiveFrame();
delay(1000);
int rssi = sx1278.getRSSI();
Serial.print(" RSSI: ");
Serial.print(rssi);
int gain = sx1278.getLNAGain();
Serial.print(" LNA Gain: "),
Serial.println(gain);
#endif
}
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