wifi & lmic loops restructured

platformio.ini

@@ -11,9 +11,9 @@
 
 ; ---> SELECT TARGET PLATFORM HERE! <---
 [platformio]
-env_default = heltec_wifi_lora_32
+;env_default = heltec_wifi_lora_32
 ;env_default = ttgov1
-;env_default = ttgov2
+env_default = ttgov2
 ;env_default = lopy
 ;env_default = lopy4
 ;env_default = lolin32lite_lora

src/lorawan.cpp

@@ -109,7 +109,7 @@ void printKeys(void) {
 
 void do_send(osjob_t* j){
     uint8_t mydata[4];
-    uint16_t data;
+
     // Sum of unique WIFI MACs seen
     mydata[0] = (macs_wifi & 0xff00) >> 8;
     mydata[1] = macs_wifi  & 0xff;
@@ -123,12 +123,6 @@ void do_send(osjob_t* j){
         mydata[3] = 0;
     #endif
 
-    // Total BLE+WIFI unique MACs seen
-    // TBD ?
-    //data = (uint16_t) macs.size();
-    //mydata[4] = (macs_total & 0xff00) >> 8;
-    //mydata[5] = macs_total  & 0xff;
-
     // Check if there is not a current TX/RX job running
     if (LMIC.opmode & OP_TXRXPEND) {
         ESP_LOGI(TAG, "OP_TXRXPEND, not sending");
@@ -138,9 +132,17 @@ void do_send(osjob_t* j){
         LMIC_setTxData2(1, mydata, sizeof(mydata), (cfg.countermode & 0x02));
         ESP_LOGI(TAG, "Packet queued");
         sprintf(display_lmic, "PACKET QUEUED");
+        // clear counter if not in cumulative counter mode
+        if (cfg.countermode != 1) {
+            reset_counters();                       // clear macs container and reset all counters
+            reset_salt();                           // get new salt for salting hashes
+        }
     }
-    // Next TX is scheduled after TX_COMPLETE event.
+
-}
+    // Schedule next transmission
+    os_setTimedCallback(&sendjob, os_getTime()+sec2osticks(SEND_SECS * 2), do_send);
+
+} // do_send()
 
 void onEvent (ev_t ev) {
     char buff[24]="";
@@ -161,8 +163,10 @@ void onEvent (ev_t ev) {
         case EV_REJOIN_FAILED:  strcpy_P(buff, PSTR("REJOIN FAILED"));  break;
         
         case EV_JOINED:
+
+            joinstate=true;
             strcpy_P(buff, PSTR("JOINED"));
-            sprintf(display_lora, ""); // erase "Join Wait" message from display
+
             // Disable link check validation (automatically enabled
             // during join, but not supported by TTN at this time).
             LMIC_setLinkCheckMode(0);
@@ -170,26 +174,21 @@ void onEvent (ev_t ev) {
             LMIC_setAdrMode(cfg.adrmode);
             // Set data rate and transmit power (note: txpower seems to be ignored by the library)
             switch_lora(cfg.lorasf,cfg.txpower);
-            joinstate=true;
+            
             // show effective LoRa parameters after join
             ESP_LOGI(TAG, "ADR=%i, SF=%i, TXPOWER=%i", cfg.adrmode, cfg.lorasf, cfg.txpower);
             break;
-        case EV_TXCOMPLETE:
-            ESP_LOGI(TAG, "EV_TXCOMPLETE (includes waiting for RX windows)");
-            if (LMIC.txrxFlags & TXRX_ACK) {
-              ESP_LOGI(TAG, "Received ack");
-              sprintf(display_lmic, "RECEIVED ACK");
-              
-            } else {
-              sprintf(display_lmic, "TX COMPLETE");
-            }
-            if (LMIC.dataLen) {
-                ESP_LOGI(TAG, "Received %d bytes of payload", LMIC.dataLen);
-                sprintf(display_lora, "Rcvd %d bytes", LMIC.dataLen);
 
+        case EV_TXCOMPLETE:
+
+            strcpy_P(buff, (LMIC.txrxFlags & TXRX_ACK) ? PSTR("RECEIVED ACK") : PSTR("TX COMPLETE")); 
+            sprintf(display_lora, ""); // erase previous LoRa message from display
+            
+            if (LMIC.dataLen) {
+                ESP_LOGI(TAG, "Received %d bytes of payload, RSSI %d SNR %d", LMIC.dataLen, LMIC.rssi, (signed char)LMIC.snr / 4);
                 // LMIC.snr = SNR twos compliment [dB] * 4
                 // LMIC.rssi = RSSI [dBm] (-196...+63)
-                sprintf(display_lmic, "RSSI %d SNR %d", LMIC.rssi, (signed char)LMIC.snr / 4 );
+                sprintf(display_lora, "RSSI %d SNR %d", LMIC.rssi, (signed char)LMIC.snr / 4 );
 
                 // check if payload received on command port, then call remote command interpreter
                 if ( (LMIC.txrxFlags & TXRX_PORT) && (LMIC.frame[LMIC.dataBeg-1] == RCMDPORT ) ) {
@@ -203,6 +202,7 @@ void onEvent (ev_t ev) {
                 }
             }
             break;
+
         default: sprintf_P(buff, PSTR("UNKNOWN EVENT %d"), ev);      break;
     }
 
@@ -211,7 +211,6 @@ void onEvent (ev_t ev) {
         ESP_LOGI(TAG, "EV_%s", buff);
         sprintf(display_lmic, buff);
     }
-
+ 
-    
+} // onEvent()
-}
 

src/main.cpp

@@ -142,14 +142,33 @@ void lorawan_loop(void * pvParameters) {
 
     configASSERT( ( ( uint32_t ) pvParameters ) == 1 ); // FreeRTOS check
 
+    static uint16_t lorawait = 0;
+
     while(1) {
         
+        // execute LMIC jobs
         os_runloop_once();
 
+        // indicate LMIC state on LEDs if present
         #if (HAS_LED != NOT_A_PIN) || defined (HAS_RGB_LED)
             led_loop();
         #endif
-        
+/*
+        // check if payload is sent
+        while(LMIC.opmode & OP_TXRXPEND) {
+            if(!lorawait) 
+                sprintf(display_lora, "LoRa wait");
+            lorawait++;
+            // in case sending really fails: reset LMIC and rejoin network
+            if( (lorawait % MAXLORARETRY ) == 0) {
+                ESP_LOGI(TAG, "Payload not sent, resetting LMIC and rejoin");
+                lorawait = 0;                
+                LMIC_reset(); // Reset the MAC state. Session and pending data transfers will be discarded.
+            };
+            vTaskDelay(1000/portTICK_PERIOD_MS);
+            yield();
+        }
+*/
         vTaskDelay(10/portTICK_PERIOD_MS);
         yield();
     }    
@@ -192,49 +211,15 @@ void sniffer_loop(void * pvParameters) {
 
     configASSERT( ( ( uint32_t ) pvParameters ) == 1 ); // FreeRTOS check
 
-    char buff[16];
-    int nloop=0, lorawait=0;
-   
   	while (1) {
 
-        nloop++; // actual number of wifi loops, controls cycle when data is sent
+        for (channel = 1; channel <= WIFI_CHANNEL_MAX; channel++) {
-
+        // rotates variable channel 1..WIFI_CHANNEL_MAX
-        channel = (channel % WIFI_CHANNEL_MAX) + 1;     // rotates variable channel 1..WIFI_CHANNEL_MAX
+            wifi_sniffer_set_channel(channel);
-        wifi_sniffer_set_channel(channel);
+            ESP_LOGD(TAG, "Wifi set channel %d", channel);
-        ESP_LOGD(TAG, "Wifi set channel %d", channel);
+            vTaskDelay(cfg.wifichancycle*10 / portTICK_PERIOD_MS);
-
+            yield();
-        // duration of one wifi scan loop reached? then send data and begin new scan cycle
+        }
-        if ( nloop >= ( (100 / cfg.wifichancycle) * (cfg.wifiscancycle * 2)) +1 ) {
-
-            nloop=0; channel=0;                         // reset wifi scan + channel loop counter           
-            do_send(&sendjob);                          // Prepare and execute LoRaWAN data upload
-            
-            // clear counter if not in cumulative counter mode
-            if (cfg.countermode != 1) {
-                reset_counters();                       // clear macs container and reset all counters
-                reset_salt();                           // get new salt for salting hashes
-            }      
-
-            // check if payload is sent
-            lorawait = 0;
-            while(LMIC.opmode & OP_TXRXPEND) {
-                if(!lorawait) 
-                    sprintf(display_lora, "LoRa wait");
-                lorawait++;
-                // in case sending really fails: reset and rejoin network
-                if( (lorawait % MAXLORARETRY ) == 0) {
-                    ESP_LOGI(TAG, "Payload not sent, trying reset and rejoin");
-                    esp_restart();
-                };
-                vTaskDelay(1000/portTICK_PERIOD_MS);
-                yield();
-            }
-            sprintf(display_lora, ""); // clear LoRa wait message fromd display
-                    
-        } // end of send data cycle
-        
-        vTaskDelay(cfg.wifichancycle*10 / portTICK_PERIOD_MS);
-        yield();
 
     } // end of infinite wifi channel rotation loop
 }
@@ -556,7 +541,9 @@ ESP_LOGI(TAG, "Features %s", features);
 #endif
 
 os_init(); // setup LMIC
+LMIC_reset(); // Reset the MAC state. Session and pending data transfers will be discarded.
 os_setCallback(&initjob, lora_init); // setup initial job & join network 
+
 wifi_sniffer_init(); // setup wifi in monitor mode and start MAC counting
 
 // initialize salt value using esp_random() called by random() in arduino-esp32 core

src/main.h

@@ -1,6 +1,6 @@
 
 // program version - note: increment version after modifications to configData_t struct!!
-#define PROGVERSION                     "1.3.22"    // use max 10 chars here!
+#define PROGVERSION                     "1.3.23"    // use max 10 chars here!
 #define PROGNAME                        "PAXCNT"
 
 //--- Declarations ---

src/paxcounter.conf

@@ -32,9 +32,9 @@
 #define WIFI_MY_COUNTRY                 "EU"    // select locale for Wifi RF settings
 #define	WIFI_CHANNEL_SWITCH_INTERVAL    50      // [seconds/100] -> 0,5 sec.
 
-// LoRa payload send cycle
+// LoRa payload send cycle --> take care of duty cycle of LoRaWAN network! <--
-#define SEND_SECS                       120     // [seconds/2] -> 240 sec.
+//#define SEND_SECS                       120     // [seconds/2] -> 240 sec.
-//#define SEND_SECS                       30    // [seconds/2] -> 60 sec.
+#define SEND_SECS                       30    // [seconds/2] -> 60 sec.
 
 // Default LoRa Spreadfactor
 #define LORASFDEFAULT                   9       // 7 ... 12 SF, according to LoRaWAN specs