[rpi] Use tx channel hopping and decrease timeout

Using only channel 40 for transmits led in some cases to no responses.

tools/rpi/hoymiles/__init__.py

@@ -297,8 +297,8 @@ class InverterPacketFragment:
 
 class HoymilesNRF:
     """Hoymiles NRF24 Interface"""
-    tx_channel_id = 0
-    tx_channel_list = [40]
+    tx_channel_id = 2
+    tx_channel_list = [3,23,40,61,75]
     rx_channel_id = 0
     rx_channel_list = [3,23,40,61,75]
     rx_channel_ack = False
@@ -332,6 +332,12 @@ class HoymilesNRF:
         :rtype: bool
         """
 
+        self.next_tx_channel()
+
+        if HOYMILES_TRANSACTION_LOGGING:
+            c_datetime = datetime.now().strftime("%Y-%m-%d %H:%M:%S.%f")
+            logging.debug(f'{c_datetime} Transmit {len(packet)} bytes channel {self.tx_channel}: {hexify_payload(packet)}')
+
         if not txpower:
             txpower = self.txpower
 
@@ -363,13 +369,13 @@ class HoymilesNRF:
         """
         Receive Packets
 
-        :param timeout: receive timeout in nanoseconds (default: 12e8)
+        :param timeout: receive timeout in nanoseconds (default: 5e8)
         :type timeout: int
         :yields: fragment
         """
 
         if not timeout:
-            timeout=12e8
+            timeout=5e8
 
         self.radio.setChannel(self.rx_channel)
         self.radio.setAutoAck(False)
@@ -415,7 +421,7 @@ class HoymilesNRF:
                     self.radio.setChannel(self.rx_channel)
                     self.radio.startListening()
 
-            time.sleep(0.005)
+            time.sleep(0.004)
 
     def next_rx_channel(self):
         """
@@ -433,6 +439,15 @@ class HoymilesNRF:
             return True
         return False
 
+    def next_tx_channel(self):
+        """
+        Select next channel from hop list
+
+        """
+        self.tx_channel_id = self.tx_channel_id + 1
+        if self.tx_channel_id >= len(self.tx_channel_list):
+            self.tx_channel_id = 0
+
     @property
     def tx_channel(self):
         """
@@ -612,10 +627,6 @@ class InverterTransaction:
 
         packet = self.tx_queue.pop(0)
 
-        if HOYMILES_TRANSACTION_LOGGING:
-            c_datetime = datetime.now().strftime("%Y-%m-%d %H:%M:%S.%f")
-            logging.debug(f'{c_datetime} Transmit {len(packet)} | {hexify_payload(packet)}')
-
         self.radio.transmit(packet, txpower=self.txpower)
 
         wait = False