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experimental modbus scan

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This commit is contained in:
Stefan Allius
2024-09-22 10:56:48 +02:00
parent edc0f7a6af
commit ae4bcee41f
2 changed files with 50 additions and 13 deletions
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59
app/src/gen3plus/solarman_v5.py
View File

@@ -55,9 +55,9 @@ class SolarmanV5(Message):
MB_RTU_CMD = 2
MB_START_TIMEOUT = 40
'''start delay for Modbus polling in server mode'''
MB_REGULAR_TIMEOUT = 60
MB_REGULAR_TIMEOUT = 20
'''regular Modbus polling time in server mode'''
MB_CLIENT_DATA_UP = 30
MB_CLIENT_DATA_UP = 10
'''Data up time in client mode'''
HDR_FMT = '<BLLL'
'''format string for packing of the header'''
@@ -142,6 +142,8 @@ class SolarmanV5(Message):
'''timer value for next Modbus polling request'''
self.modbus_polling = False
self.sensor_list = 0x0000
self.mb_start_reg = 0x5981
self.mb_inv_no = 1
'''
Our puplic methods
@@ -180,7 +182,21 @@ class SolarmanV5(Message):
self.new_data['controller'] = True
self.state = State.up
self._send_modbus_cmd(Modbus.READ_REGS, 0x3000, 48, logging.DEBUG)
# self.__build_header(0x1710)
# self.ifc.write += struct.pack('<B', 0)
# self.__finish_send_msg()
# hex_dump_memory(logging.INFO, f'Send StartCmd:{self.addr}:',
# self.ifc.write, len(self.ifc.write))
# self.writer.write(self.ifc.write)
# self.ifc.write = bytearray(0) # self.ifc.write[sent:]
if self.sensor_list != 0x02b0:
self._send_modbus_cmd(self.mb_inv_no, Modbus.READ_REGS,
self.mb_start_reg, 4, logging.INFO)
else:
self._send_modbus_cmd(Modbus.INV_ADDR, Modbus.READ_REGS, 0x3000,
48, logging.DEBUG)
self.mb_timer.start(self.mb_timeout)
def new_state_up(self):
@@ -423,24 +439,38 @@ class SolarmanV5(Message):
self.ifc.write.logging(log_lvl, f'Send Modbus {state}:{self.addr}:')
self.ifc.write()
def _send_modbus_cmd(self, func, addr, val, log_lvl) -> None:
def _send_modbus_cmd(self, mb_no, func, addr, val, log_lvl) -> None:
if self.state != State.up:
logger.log(log_lvl, f'[{self.node_id}] ignore MODBUS cmd,'
' as the state is not UP')
return
self.mb.build_msg(Modbus.INV_ADDR, func, addr, val, log_lvl)
self.mb.build_msg(mb_no, func, addr, val, log_lvl)
async def send_modbus_cmd(self, func, addr, val, log_lvl) -> None:
self._send_modbus_cmd(func, addr, val, log_lvl)
self._send_modbus_cmd(Modbus.INV_ADDR, func, addr, val, log_lvl)
def mb_timout_cb(self, exp_cnt):
self.mb_timer.start(self.mb_timeout)
if self.sensor_list != 0x2b0:
self.mb_start_reg += 4
if self.mb_start_reg > 0xffff:
self.mb_start_reg = self.mb_start_reg & 0xffff
self.mb_inv_no += 1
logging.info(f"Next Round: inv:{self.mb_inv_no}"
f" reg:{self.mb_start_reg:04x}")
if (self.mb_start_reg & 0xfffc) % 0x80 == 0:
logging.info(f"Scan info: inv:{self.mb_inv_no}"
f" reg:{self.mb_start_reg:04x}")
self._send_modbus_cmd(self.mb_inv_no, Modbus.READ_REGS,
self.mb_start_reg, 4, logging.INFO)
else:
self._send_modbus_cmd(Modbus.INV_ADDR, Modbus.READ_REGS, 0x3000,
48, logging.DEBUG)
self._send_modbus_cmd(Modbus.READ_REGS, 0x3000, 48, logging.DEBUG)
if 1 == (exp_cnt % 30):
# logging.info("Regular Modbus Status request")
self._send_modbus_cmd(Modbus.READ_REGS, 0x2000, 96, logging.DEBUG)
if 1 == (exp_cnt % 30):
# logging.info("Regular Modbus Status request")
self._send_modbus_cmd(Modbus.INV_ADDR, Modbus.READ_REGS,
0x2000, 96, logging.DEBUG)
def at_cmd_forbidden(self, cmd: str, connection: str) -> bool:
return not cmd.startswith(tuple(self.at_acl[connection]['allow'])) or \
@@ -641,6 +671,13 @@ class SolarmanV5(Message):
# logger.info(f'first byte modbus:{data[14]}')
inv_update = False
self.modbus_elms = 0
if (self.sensor_list != 0x2b0 and data[15] != 0):
logging.info('Valid MODBUS data '
f'(reg: 0x{self.mb.last_reg:04x}):')
hex_dump_memory(logging.INFO, 'Valid MODBUS data '
f'(reg: 0x{self.mb.last_reg:04x}):',
data[14:], modbus_msg_len)
for key, update, _ in self.mb.recv_resp(self.db, data[14:],
self.node_id):
self.modbus_elms += 1

4
app/src/modbus.py
View File

@@ -87,8 +87,8 @@ class Modbus():
'''Response handler to forward the response'''
self.timeout = timeout
'''MODBUS response timeout in seconds'''
self.max_retries = 1
'''Max retransmit for MODBUS requests'''
self.max_retries = 0
'''Max retransmit for MODBU requests'''
self.retry_cnt = 0
self.last_req = b''
self.counter = {}