From 418fd48a255dcf9201153fab334283468be7c3ca Mon Sep 17 00:00:00 2001
From: Max <max@xolus.net>
Date: Mon, 25 Mar 2024 23:33:25 +0100
Subject: [PATCH] Support for exporting meter events

---
 solaredge_modbus.py |  5 ++++-
 sunspec.py          | 20 ++++++++++++++++++--
 2 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/solaredge_modbus.py b/solaredge_modbus.py
index ed4bfd6..24acafb 100644
--- a/solaredge_modbus.py
+++ b/solaredge_modbus.py
@@ -17,7 +17,8 @@ metric_data = {
     "ac_voltage_volts": ["gauge", "Output bus voltage"],
     'ac_frequency_hertz': ["gauge", "Output bus frequency"],
     'ac_power_watts': ["gauge", "Active/Reactive/Apparent AC power"],
-    'ac_power_factor': ["gauge", "AC Phase factor"]
+    'ac_power_factor': ["gauge", "AC Phase factor"],
+    'meter_event': ["gauge", 'Power meter event']
 }
 
 def export(d, m):
@@ -51,6 +52,8 @@ def export(d, m):
         yield ('energy_watthours_total', {'meter': meter}, m.energy_real[meter])
 
     yield ('ac_frequency_hertz', {'meter': 'mains'}, m.frequency)
+    for event in m.events:
+        yield ('meter_event', {'event': event}, float(m.events[event]))
 
 
 
diff --git a/sunspec.py b/sunspec.py
index fa33e70..cf8eed3 100644
--- a/sunspec.py
+++ b/sunspec.py
@@ -55,6 +55,14 @@ class CommonBlock:
         self.serial = regs.read_bytes(50, 32)
         self.device = regs.read_uint16(66)
         
+meter_events_bits = { 2: 'Power Failure',
+                      3: 'Under Voltage',
+                      4: 'Low PF',
+                      5: 'Over Current',
+                      6: 'Over Voltage',
+                      7: 'Missing Sensor' }
+                 
+
 class Meter:
     def __init__(self, regs):
         blocks16 = (('ac_current', 0, ('total', 'a', 'b', 'c'), 0.1),
@@ -95,6 +103,12 @@ class Meter:
 
         self.frequency = regs.read_int16(14, scale=15)
 
+        event_bits = regs.read_uint32(103)
+        self.events = {}
+        for bit in meter_events_bits:
+            self.events[meter_events_bits[bit]] = bool(event_bits & (1 << bit))
+        
+
 status_codes = [None, 'off', 'sleep', 'start', 'on', 'throttled', 'stop', 'fault', 'setup']
 
 class InverterBlock:
@@ -134,9 +148,11 @@ class Inverter:
         if not self._conn.connect():
             raise ConnectionFailed()
 
-    def registers(self, addr, length):
+    def registers(self, addr, length, device=None):
+        if device is None:
+            device = self._device
         self.connect()
-        rs = self._conn.read_holding_registers(addr, length, slave=self._device)
+        rs = self._conn.read_holding_registers(addr, length, slave=device)
         return Registers(rs, length)
 
     def common_block(self):