From 70df292948a66a6a9fc13173d63ff7683a3305f4 Mon Sep 17 00:00:00 2001
From: d0kuhn <dominik.kuhn90@googlemail.com>
Date: Tue, 12 Dec 2023 15:46:13 +0100
Subject: [PATCH] diasbale unused channels

---
 src/main.c          | 22 +++++++++++++++++-----
 test/serial_test.py |  9 +++++++++
 2 files changed, 26 insertions(+), 5 deletions(-)
 create mode 100644 test/serial_test.py

diff --git a/src/main.c b/src/main.c
index 54a3405..0adcc70 100644
--- a/src/main.c
+++ b/src/main.c
@@ -102,8 +102,18 @@ void initfunc (osjob_t* j) {
     LMIC.dn2Dr = DR_SF9;
     // prevent some downlink messages, TTN advanced setup is set to the default 5
     LMIC.rxDelay = 5;
+    LMIC_setupChannel(0, 868100000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);
+
+    int channel = 0;
+    for(int i=0; i<9; i++) { // For EU; for US use i<71
+      if(i != channel) {
+        LMIC_disableChannel(i);
+      }
+    }
     // Set data rate and transmit power for uplink (note: txpow seems to be ignored by the library)
-    LMIC_setDrTxpow(DR_SF12, 14);
+    LMIC_setDrTxpow(DR_SF7, 14);
+
+    
   #else
     // start joining
     LMIC_startJoining();
@@ -124,7 +134,8 @@ static osjob_t reportjob;
 static void reportfunc (osjob_t* j) {
     // read sensor
     u2_t val = readsensor();
-    debug_val("val = ", val);
+    debug_int( os_getTime() );
+    debug_val(": val = ", val);
     // prepare and schedule data for transmission
     LMIC.frame[0] = val << 8;
     LMIC.frame[1] = val;
@@ -155,9 +166,10 @@ void onEvent (ev_t ev) {
        	  debug_str("try joining\r\n");
        	  break;
       case EV_JOINED:
-          debug_led(1);
+          debug_str("joined\r\n");
+          // debug_led(1);
           // kick-off periodic sensor job
-          reportfunc(&reportjob);
+          // reportfunc(&reportjob);
           break;
       case EV_JOIN_FAILED:
     	  debug_str("join failed\r\n");
@@ -207,7 +219,7 @@ void onEvent (ev_t ev) {
 		  debug_str("EV_LINK_ALIVE\r\n");
 		  break;
 	  default:
-		   debug_str("Unknown event\r\n");
+		  debug_str("Unknown event\r\n");
 		  break;
     }
 }
diff --git a/test/serial_test.py b/test/serial_test.py
new file mode 100644
index 0000000..60e0224
--- /dev/null
+++ b/test/serial_test.py
@@ -0,0 +1,9 @@
+import serial
+from datetime import datetime
+
+with serial.Serial('/dev/ttyUSB0', 9600) as ser:
+    while(True):
+        line = ser.readline()
+        now = datetime.now() 
+        print(now.strftime("%d/%m/%Y %H:%M:%S") + ': ' + line.decode('utf-8'))
+