Dev 0.8 (#106)

* S allius/issue102 (#103)

* hotfix: don't send two MODBUS commands together

* Update README.md

Exchange logger fw version with the real inverter fw version in the compatibility table

* Update python-app.yml

run also on pushes to issue branches
fix name for issues branches

* S allius/issue104 (#105)

* Update README.md

Exchange logger fw version with the real inverter fw version in the compatibility table

* Update python-app.yml

run also on pushes to issue branches
fix name for issues branches

* fix forwarding of MODBUS responses

* fix unit tests

* update changelog

CHANGELOG.md

@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+- Fix MODBUS responses are dropped and not forwarded to the TSUN cloud [#104](https://github.com/s-allius/tsun-gen3-proxy/issues/104)
+- GEN3 Fix connections losts due MODBUS requests [#102](https://github.com/s-allius/tsun-gen3-proxy/issues/102)
+
+[0.8.0] - 2024-06-07
+
 - improve logging: add protocol or node_id to connection logs
 - improve logging: log ignored AT+ or MODBUS commands
 - improve tracelog: log level depends on message type and source

app/src/gen3/talent.py

@@ -426,7 +426,8 @@ class Talent(Message):
 
         if self.ctrl.is_req():
             if self.remoteStream.mb.recv_req(data[hdr_len:],
-                                             self.msg_forward):
+                                             self.remoteStream.
+                                             msg_forward):
                 self.inc_counter('Modbus_Command')
             else:
                 self.inc_counter('Invalid_Msg_Format')

app/src/gen3plus/solarman_v5.py

@@ -495,7 +495,8 @@ class SolarmanV5(Message):
 
         elif ftype == self.MB_RTU_CMD:
             if self.remoteStream.mb.recv_req(data[15:],
-                                             self.__forward_msg()):
+                                             self.remoteStream.
+                                             __forward_msg):
                 self.inc_counter('Modbus_Command')
             else:
                 self.inc_counter('Invalid_Msg_Format')

app/src/scheduler.py

@@ -41,7 +41,7 @@ class Schedule:
                 fnc = getattr(m, "send_modbus_cmd", None)
                 if callable(fnc):
                     await fnc(Modbus.READ_REGS, 0x3008, 21, logging.DEBUG)
-                    if 0 == (cls.count % 30):
-                        # logging.info("Regular Modbus Status request")
-                        await fnc(Modbus.READ_REGS, 0x2007, 2, logging.DEBUG)
+                    # if 0 == (cls.count % 30):
+                    #     # logging.info("Regular Modbus Status request")
+                    #     await fnc(Modbus.READ_REGS, 0x2007, 2, logging.DEBUG)
         cls.count += 1

app/tests/test_solarman.py

@@ -91,6 +91,9 @@ class MemoryStream(SolarmanV5):
 def get_sn() -> bytes:
     return b'\x21\x43\x65\x7b'
 
+def get_sn_int() -> int:
+    return 2070233889
+
 def get_inv_no() -> bytes:
     return b'T170000000000001'
 
@@ -531,6 +534,15 @@ def MsgModbusCmd():
     msg += b'\x15'
     return msg
 
+@pytest.fixture
+def MsgModbusCmdFwd():
+    msg  = b'\xa5\x17\x00\x10\x45\x01\x00' +get_sn()  +b'\x02\xb0\x02'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x06\x20\x08'
+    msg += b'\x00\x00\x03\xc8'
+    msg += correct_checksum(msg)
+    msg += b'\x15'
+    return msg
+
 @pytest.fixture
 def MsgModbusCmdCrcErr():
     msg  = b'\xa5\x17\x00\x10\x45\x03\x02' +get_sn()  +b'\x02\xb0\x02'
@@ -1412,9 +1424,11 @@ def test_msg_at_command_rsp2(ConfigTsunInv1, AtCommandRspMsg):
     assert m.db.stat['proxy']['Modbus_Command'] == 0
     m.close()
 
-def test_msg_modbus_req(ConfigTsunInv1, MsgModbusCmd):
+def test_msg_modbus_req(ConfigTsunInv1, MsgModbusCmd, MsgModbusCmdFwd):
     ConfigTsunInv1
     m = MemoryStream(b'')
+    m.snr = get_sn_int()
+    m.state = m.STATE_UP
     c = m.createClientStream(MsgModbusCmd)
 
     m.db.stat['proxy']['Unknown_Ctrl'] = 0
@@ -1428,8 +1442,9 @@ def test_msg_modbus_req(ConfigTsunInv1, MsgModbusCmd):
     assert str(c.seq) == '03:02'
     assert c.header_len==11
     assert c.data_len==23
-    assert c._forward_buffer==MsgModbusCmd
+    assert c._forward_buffer==b''
     assert c._send_buffer==b''
+    assert m.writer.sent_pdu == MsgModbusCmdFwd
     assert m.db.stat['proxy']['Unknown_Ctrl'] == 0
     assert m.db.stat['proxy']['AT_Command'] == 0
     assert m.db.stat['proxy']['Modbus_Command'] == 1
@@ -1439,6 +1454,8 @@ def test_msg_modbus_req(ConfigTsunInv1, MsgModbusCmd):
 def test_msg_modbus_req2(ConfigTsunInv1, MsgModbusCmdCrcErr):
     ConfigTsunInv1
     m = MemoryStream(b'')
+    m.snr = get_sn_int()
+    m.state = m.STATE_UP
     c = m.createClientStream(MsgModbusCmdCrcErr)
 
     m.db.stat['proxy']['Unknown_Ctrl'] = 0
@@ -1452,8 +1469,9 @@ def test_msg_modbus_req2(ConfigTsunInv1, MsgModbusCmdCrcErr):
     assert str(c.seq) == '03:02'
     assert c.header_len==11
     assert c.data_len==23
-    assert c._forward_buffer==MsgModbusCmdCrcErr
+    assert c._forward_buffer==b''
     assert c._send_buffer==b''
+    assert m.writer.sent_pdu==b''
     assert m.db.stat['proxy']['Unknown_Ctrl'] == 0
     assert m.db.stat['proxy']['AT_Command'] == 0
     assert m.db.stat['proxy']['Modbus_Command'] == 0