inepro: add driver for the PRO380 meter family

dbus-modbus-client.py

@@ -31,6 +31,7 @@
 import cre
 import dse
 import ev_charger
+import inepro
 import smappee
 import victron_em
 

inepro.py

@@ -0,0 +1,89 @@
+# SPDX-FileCopyrightText: 2023 Holger Steinhaus
+#
+# SPDX-License-Identifier: MIT
+
+import device
+import logging
+import probe
+from register import *
+
+
+log = logging.getLogger()
+
+
+class PRO380_Meter(device.EnergyMeter):
+    """
+    Generic driver for the PRO380 meter series. There are a lot of brandings and variants available,
+    which are probably working on a similar register map.
+
+    All register information based on https://ineprometering.com/wp-content/uploads/2019/04/PRO380-user-manual-V2.18v6.pdf
+
+    Attention: The Inepro meter has a two-pole RS485 terminal (D+, D-) without any ground pin.
+    It therefore does not work with the genuine Victron RS485 cable and requires an INSULATED RS485 adapter!
+    Using an non-insulated cable will result in strange communication errors like missing bytes and injected zero bytes.
+    """
+
+    productid = 0xb077
+    productname = 'PRO380-Mod'
+
+    def __init__(self, *args):
+        super(PRO380_Meter, self).__init__(*args)
+
+        self.info_regs = [
+            Reg_u32b(0x4000, '/Serial'),
+            Reg_u32b(0x4007, '/FirmwareVersion'),
+            Reg_u32b(0x4009, '/HardwareVersion'),
+        ]
+
+    def phase_regs(self, n):
+        s = 2 * (n - 1)
+        return [
+            Reg_f32b(0x5002 + s, '/Ac/L%d/Voltage' % n,        1, '%.1f V'),
+            Reg_f32b(0x500c + s, '/Ac/L%d/Current' % n,        1, '%.1f A'),
+            Reg_f32b(0x5014 + s, '/Ac/L%d/Power' % n, scale=0.001, text='%.1f W'),
+            Reg_f32b(0x6012 + s, '/Ac/L%d/Energy/Forward' % n, 1.,'%.1f kWh'),
+            Reg_f32b(0x601c + s, '/Ac/L%d/Energy/Reverse' % n, 1.,'%.1f kWh'),
+        ]
+
+    def device_init(self):
+        log.debug("init")
+        # make sure application is set to H
+        appreg = Reg_u16(0xa000)
+        self.read_info()
+
+        phases = 3
+
+        regs = [
+            Reg_f32b(0x5008, '/Ac/Frequency',      1., '%.1f Hz'),
+            Reg_f32b(0x5012, '/Ac/Power',          0.001, '%.1f W'),
+            Reg_f32b(0x502a, '/Ac/PowerFactor',    1, '%.1f'),
+            Reg_f32b(0x600c, '/Ac/Energy/Forward', 1., '%.1f kWh'),
+            Reg_f32b(0x6018, '/Ac/Energy/Reverse', 1., '%.1f kWh'),
+        ]
+
+        for n in range(1, phases + 1):
+            regs += self.phase_regs(n)
+
+        self.data_regs = regs
+
+    def dbus_write_register(self, reg, path, val):
+        super(PRO380_Meter, self).dbus_write_register(reg, path, val)
+        self.sched_reinit()
+
+    def get_ident(self):
+        return 'cg_%s' % self.info['/Serial']
+
+
+models = {
+    0x2007: {
+        'model':    'SolarLog PRO380-Mod',
+        'handler':  PRO380_Meter,
+    },
+}
+
+
+
+probe.add_handler(probe.ModelRegister(Reg_u16(0x1010), models,
+                                      methods=['rtu'],
+                                      rates=[9600],
+                                      units=[1]))

register.py

@@ -130,6 +130,11 @@ class Reg_f32l(Reg_num):
     count = 2
     rtype = float
 
+class Reg_f32b(Reg_num):                             
+    coding = ('>f', '>2H')                         
+    count = 2                                                                         
+    rtype = float                                    
+
 class Reg_e16(Reg, int):
     def __init__(self, base, name, enum, **kwargs):
         super().__init__(base, 1, name, **kwargs)