scan performance optimizations

src/blecsan.cpp

@@ -88,8 +88,8 @@ static const char *btsig_gap_type(uint32_t gap_type) {
 	}
 } // btsig_gap_type
 
-
-static void gap_callback_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param)
+// using IRAM_:ATTR here to speed up callback function
+IRAM_ATTR static void gap_callback_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param)
 {
 	esp_ble_gap_cb_param_t *p = (esp_ble_gap_cb_param_t *)param;
 	esp_err_t status;	
@@ -188,7 +188,7 @@ esp_err_t register_ble_functionality(void)
 	
 	// This function is called to occur gap event, such as scan result.
 	//register the scan callback function to the gap module
-	status = esp_ble_gap_register_callback(gap_callback_handler);
+	status = esp_ble_gap_register_callback(&gap_callback_handler);
 	if (status != ESP_OK) 
 	{
 		ESP_LOGE(TAG, "esp_ble_gap_register_callback: rc=%d", status);
@@ -226,11 +226,11 @@ esp_err_t register_ble_functionality(void)
 
 void stop_BLEscan(void){
 	ESP_LOGI(TAG, "Shutting BT Down ...");
-	esp_ble_gap_register_callback(NULL);
-	esp_bluedroid_disable(); 
-	esp_bluedroid_deinit(); 
-	esp_bt_controller_disable();
-	esp_bt_controller_deinit();
+	ESP_ERROR_CHECK(esp_ble_gap_register_callback(NULL));
+	ESP_ERROR_CHECK(esp_bluedroid_disable());
+	ESP_ERROR_CHECK(esp_bluedroid_deinit());
+	ESP_ERROR_CHECK(esp_bt_controller_disable());
+	ESP_ERROR_CHECK(esp_bt_controller_deinit());
 }
 
 void start_BLEscan(void){

src/loraconf.sample.h

@@ -3,6 +3,9 @@
  * 
  * Read the values from TTN console (or whatever applies), insert them here,
  * and rename this file to src/loraconf.h
+ * 
+ * Note that DEVEUI, APPEUI and APPKEY should all be specified in MSB format.
+ * (This is different from standard LMIC-Arduino which expects DEVEUI and APPEUI in LSB format.)
 
  * Set your DEVEUI here, if you have one. You can leave this untouched, 
  * then the DEVEUI will be generated during runtime from device's MAC adress

src/macsniff.cpp

@@ -102,7 +102,8 @@ void wifi_sniffer_set_channel(uint8_t channel) {
     esp_wifi_set_channel(channel, WIFI_SECOND_CHAN_NONE);
 }
 
-void wifi_sniffer_packet_handler(void* buff, wifi_promiscuous_pkt_type_t type) {
+// using IRAM_:ATTR here to speed up callback function
+IRAM_ATTR void wifi_sniffer_packet_handler(void* buff, wifi_promiscuous_pkt_type_t type) {
     const wifi_promiscuous_pkt_t *ppkt = (wifi_promiscuous_pkt_t *)buff;
     const wifi_ieee80211_packet_t *ipkt = (wifi_ieee80211_packet_t *)ppkt->payload;
     const wifi_ieee80211_mac_hdr_t *hdr = &ipkt->hdr;

src/main.cpp

@@ -327,7 +327,7 @@ uint64_t uptime() {
             if (cfg.blescan)
                 u8x8.printf("BLTH:%-4d", macs_ble);
             else
-                u8x8.printf("%-16s", "BLTH:off");
+                u8x8.printf("%s", "BLTH:off");
         #endif
 
         // update LoRa SF display (line 3)

src/main.h

@@ -1,6 +1,6 @@
 
 // program version - note: increment version after modifications to configData_t struct!!
-#define PROGVERSION                     "1.3.5"    // use max 10 chars here!
+#define PROGVERSION                     "1.3.51"    // use max 10 chars here!
 #define PROGNAME                        "PAXCNT"
 
 //--- Declarations ---

src/paxcounter.conf

@@ -12,8 +12,8 @@
 // BLE scan parameters
 #define BLESTACKSIZE                    8192    // stack size for esp_bt_controller
 #define BLESCANTIME                     0       // [seconds] scan duration, 0 means infinite [default], see note below
-#define BLESCANWINDOW                   10      // [milliseconds] scan window, see below, 3 .. 10240, default 10
-#define BLESCANINTERVAL                 10      // [milliseconds] scan interval, see below, 3 .. 10240, default 10
+#define BLESCANWINDOW                   0x50    // [milliseconds] scan window, see below, 3 .. 10240, default 80ms
+#define BLESCANINTERVAL                 0x50    // [milliseconds] scan interval, see below, 3 .. 10240, default 80ms = 100% duty cycle
 
 /* Note: guide for setting bluetooth parameters
 *