tutorials/lora: updated Pymesh example

tutorials/lora/lora-mesh.md

@@ -1,6 +1,6 @@
-# LoRa Mesh
+# Pymesh - LoRa Mesh
 
-The LoRa Mesh is implemented using [OpenThread](https://openthread.io/guides/thread-primer).
+The Pymesh LoRa Mesh is implemented using [OpenThread](https://openthread.io/guides/thread-primer).
 
 To understand the OpenThread terms and overall functionality, these guides are highly recommended:
 
@@ -8,7 +8,7 @@ To understand the OpenThread terms and overall functionality, these guides are h
 * [Node Roles and Types](https://openthread.io/guides/thread-primer/node-roles-and-types)
 * [IPv6 Addressing](https://openthread.io/guides/thread-primer/ipv6-addressing) \(especially, RLOC unicast address\)
 
-Important, all the OpenThread CLI commands are accessible using `LoRa.cli("command")`, the complete list of commands is [here](https://github.com/openthread/openthread/blob/master/src/cli/README.md). Please note some commands, can't execute, as some functionalities are not implemented \(ex: Commissioning Role, Joiner Role, DNS\).
+Important, all the OpenThread CLI commands are accessible using `LoRa.cli("command")`, the complete list of commands is [here](https://github.com/openthread/openthread/blob/c482301ec73b80985445102e4d0a936346172ddb/src/cli/README.md). Please note some commands, can't execute, as some functionalities are not implemented \(ex: Commissioning Role, Joiner Role, DNS\).
 
 This example shows how to:
 
@@ -40,14 +40,16 @@ import machine
 
 from loramesh import Loramesh
 
+pycom.wifi_on_boot(False)
+pycom.heartbeat(False)
+
 lora = LoRa(mode=LoRa.LORA, region=LoRa.EU868, bandwidth=LoRa.BW_125KHZ, sf=7)
 MAC = str(ubinascii.hexlify(lora.mac()))[2:-1]
 print("LoRa MAC: %s"%MAC)
 
 mesh = Loramesh(lora)
 
-# waiting until it connected to Mesh network and
-# it has some valid neighbors
+# waiting until it connected to Mesh network
 while True:
     mesh.led_state()
     print("%d: State %s, single %s"%(time.time(), mesh.cli('state'), mesh.cli('singleton')))
@@ -55,35 +57,21 @@ while True:
     if not mesh.is_connected():
         continue
 
-    neigbors = mesh.neighbors_ip()
-    if len(neigbors) == 0:
-        print('No neighbor')
-        continue
-
-    print('Neighbors found: %s'%neigbors)
+    print('Neighbors found: %s'%mesh.neighbors())
     break
 
 # create UDP socket
 s = socket.socket(socket.AF_LORA, socket.SOCK_RAW)
 myport = 1234
 s.bind(myport)
-pack_num = 1
-msg = "Hello World! MAC: " + MAC + ", pack: "
-ip = mesh.ip()
-
-while True:
-    mesh.led_state()
-    print("%d: State %s, single %s, IP %s"%(time.time(), mesh.cli('state'), mesh.cli('singleton'), mesh.ip()))
-
-    # check if topology changes, maybe RLOC IPv6 changed
-    new_ip = mesh.ip()
-    if ip != new_ip:
-        print("IP changed from: %s to %s"%(ip, new_ip))
-        ip = new_ip
 
+# handler responisble for receiving packets on UDP Pymesh socket
+def receive_pack():
     # listen for incomming packets
-    rcv_data, rcv_addr = s.recvfrom(128)
-    if len(rcv_data)>0:
+    while True:
+        rcv_data, rcv_addr = s.recvfrom(128)
+        if len(rcv_data) == 0:
+            break
         rcv_ip = rcv_addr[0]
         rcv_port = rcv_addr[1]
         print('Incomming %d bytes from %s (port %d)'%(len(rcv_data), rcv_ip, rcv_port))
@@ -95,11 +83,26 @@ while True:
             except Exception:
                 pass
         mesh.blink(7, .3)
-        continue
+
+pack_num = 1
+msg = "Hello World! MAC: " + MAC + ", pack: "
+ip = mesh.ip()
+mesh.mesh.rx_cb(receive_pack)
+
+# infinite main loop
+while True:
+    mesh.led_state()
+    print("%d: State %s, single %s, IP %s"%(time.time(), mesh.cli('state'), mesh.cli('singleton'), mesh.ip()))
+
+    # check if topology changes, maybe RLOC IPv6 changed
+    new_ip = mesh.ip()
+    if ip != new_ip:
+        print("IP changed from: %s to %s"%(ip, new_ip))
+        ip = new_ip
 
     # update neighbors list
     neigbors = mesh.neighbors_ip()
-    print("%d Neighbors %s"%(len(neigbors), neigbors))
+    print("%d neighbors, IPv6 list: %s"%(len(neigbors), neigbors))
 
     # send PING and UDP packets to all neighbors
     for neighbor in neigbors:
@@ -121,5 +124,5 @@ while True:
 
     # random sleep time
     time.sleep(30 + machine.rng()%30)
-```
 
+```