minor: Add some comments

src/devices/acurite.c

@@ -2028,7 +2028,7 @@ r_device const acurite_590tx = {
         .short_width = 500,  // short gap is 500 us
         .long_width  = 1500, // long gap is 1500 us
         .gap_limit   = 2000, // (preceeding) sync gap is 3000 us
-        .reset_limit = 3500, // no packet gap, sync gap is 500 us
+        .reset_limit = 3500, // no packet gap, gap before sync is 500 us
         .decode_fn   = &acurite_590tx_decode,
         .fields      = acurite_590_output_fields,
 };

src/devices/oregon_scientific.c

@@ -498,6 +498,16 @@ static int oregon_scientific_v2_1_decode(r_device *decoder, bitbuffer_t *bitbuff
     else if (sensor_id == ID_BTHGN129) {
         if (validate_os_v2_message(decoder, msg, 92, msg_bits, 19) != 0)
             return 0;
+        // int comfort = msg[7] >> 4;
+        // char *comfort_str = "Normal";
+        // if      (comfort == 0x4)   comfort_str = "Comfortable";
+        // else if (comfort == 0x8)   comfort_str = "Dry";
+        // else if (comfort == 0xc) comfort_str = "Humid";
+        // int forecast = msg[9] >> 4;
+        // char *forecast_str = "Cloudy";
+        // if      (forecast == 0x3)   forecast_str = "Rainy";
+        // else if (forecast == 0x6)   forecast_str = "Partly Cloudy";
+        // else if (forecast == 0xc) forecast_str = "Sunny";
         float temp_c = get_os_temperature(msg);
         // Pressure is given in hPa. You may need to adjust the offset
         // according to your altitude level (600 is a good starting point)

src/http_server.c

@@ -951,6 +951,9 @@ static void handle_json_stream(struct mg_connection *nc, struct http_message *hm
 // curl -D - -d "cmd=report_meta&arg=level" -X POST 'http://127.0.0.1:8433/cmd'
 // http :8433/cmd cmd==center_frequency val==868000000'
 // http --form POST :8433/cmd cmd=report_meta arg=level val=1
+// xh :8433/cmd cmd==center_frequency val==433920123
+// xh :8433/cmd cmd==sample_rate val==250000
+// xh :8433/cmd cmd==gain arg==10
 static void handle_cmd_rpc(struct mg_connection *nc, struct http_message *hm)
 {
     struct http_server_context *ctx = nc->user_data;