ski battery charge u sell

backend/services/control/inverter.py

@@ -98,10 +98,11 @@ async def write_inverter_setpoints(
         export_limit = export_lim
         reg178_val = REG178_SELL if deye_mode == "SELL" else REG178_PASSIVE
 
+        charge_a_log = charge_a if charge_a is not None else "skip"
         logger.info(
             f"[control] site={site_id} fyzický režim Deye: {deye_mode} | "
             f"battery_w={raw_bat!r} grid_w={grid_w} | "
-            f"charge_a={charge_a} discharge_a={discharge_a} | "
+            f"charge_a={charge_a_log} discharge_a={discharge_a} | "
             f"reg142={selling_mode} reg145={solar_sell} reg143={export_limit}W reg178={reg178_val}"
         )
 
@@ -164,10 +165,13 @@ async def write_inverter_setpoints(
                 "Deye TOU rows 3-6 skipped (already written today, signature unchanged)"
             )
 
+        amp_regs: list[tuple[int, str, int]] = []
+        if charge_a is not None:
+            amp_regs.append((108, "", charge_a))
+        amp_regs.append((109, "", discharge_a))
         registers.extend(
-            [
-                (108, "", charge_a),
-                (109, "", discharge_a),
+            amp_regs
+            + [
                 (141, "energy_mode (0)", 0),
                 (142, "limit_control", selling_mode),
                 (143, "", export_limit),

backend/services/control/setpoints.py

@@ -331,7 +331,7 @@ def deye_battery_charge_discharge_amps(
     max_discharge_a: int,
     export_mode: str | None = None,
     export_ban: bool = False,
-) -> tuple[int, int]:
+) -> tuple[int | None, int]:
     """
     Proud nabíjení / vybíjení (reg 108 / 109) pro zápis Deye.
 
@@ -339,14 +339,17 @@ def deye_battery_charge_discharge_amps(
     nabíjení neplní, přebytek jde do sítě (142 = zero-export dle instalace, 145 = 1).
 
     PASSIVE + nabíjení bez exportního záměru (`battery_w > 0`, export_mode NONE): **108 = max**.
-    **CHARGE** ze sítě: 108 z `battery_w`. **SELL**: 108 = 0, 109 = max.
+    **CHARGE** ze sítě: 108 z `battery_w`.
+
+    **SELL** (selling first, reg 142 = 0): vrací ``(None, max_discharge)`` — reg **108 se nezapisuje**
+    (export řídí 142/178; nulování 108 a obnova po návratu jsou zbytečné zápisy do paměti).
     """
     if lock_battery:
         return 0, 0
     if deye_mode == "CHARGE":
         return battery_watts_to_amps(bat_w, max_charge_a), 0
     if deye_mode == "SELL":
-        return 0, int(max_discharge_a)
+        return None, int(max_discharge_a)
     if self_sustain_local_use:
         return int(max_charge_a), int(max_discharge_a)
     if _is_passive_pv_surplus_export(

backend/tests/test_control_deye_passive_pv_charge.py

@@ -83,7 +83,7 @@ class PassivePvSurplusChargeAmpsTests(unittest.TestCase):
         self.assertGreater(ch, 0)
         self.assertEqual(dis, 0)
 
-    def test_sell_unchanged(self) -> None:
+    def test_sell_skips_charge_amp_write(self) -> None:
         ch, dis = deye_battery_charge_discharge_amps(
             lock_battery=False,
             deye_mode="SELL",
@@ -93,7 +93,7 @@ class PassivePvSurplusChargeAmpsTests(unittest.TestCase):
             max_charge_a=100,
             max_discharge_a=80,
         )
-        self.assertEqual(ch, 0)
+        self.assertIsNone(ch)
         self.assertEqual(dis, 80)