From 7b9d016890df75a61ee6808fd27d0204aa00ea3e Mon Sep 17 00:00:00 2001
From: root <admin@flobby.net>
Date: Fri, 7 Jun 2024 22:04:12 +0200
Subject: [PATCH] fix downgradeability #2

---
 mos.yml                           | 2 +-
 src/ShellyPlus2PM/shelly_init.cpp | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/mos.yml b/mos.yml
index c267f247..97af8901 100644
--- a/mos.yml
+++ b/mos.yml
@@ -727,7 +727,7 @@ conds:
         - ["shelly.name", "ShellyPlus2PM-??????"]
         - ["wifi.ap.ssid", "ShellyPlus2PM-??????"]
         - ["i2c.enable", true]
-        - ["i2c.sda_gpio", 26]
+        - ["i2c.sda_gpio", 33]
         - ["i2c.scl_gpio", 25]
         - ["sw1", "sw", {title: "SW1 settings"}]
         - ["sw1.name", "Shelly SW1"]
diff --git a/src/ShellyPlus2PM/shelly_init.cpp b/src/ShellyPlus2PM/shelly_init.cpp
index 70b6f2dd..9922f9d1 100644
--- a/src/ShellyPlus2PM/shelly_init.cpp
+++ b/src/ShellyPlus2PM/shelly_init.cpp
@@ -119,11 +119,13 @@ static Status PowerMeterInit(std::vector<std::unique_ptr<PowerMeter>> *pms) {
     LOG(LL_INFO, ("Newer revision detected"));
     if (mgos_sys_config_get_i2c_sda_gpio() != 26) {
       mgos_sys_config_set_i2c_sda_gpio(26);
+      mgos_sys_config_save(&mgos_sys_config, false /* try_once */, NULL /* msg */);
     }
     reset_pin = 33;
   } else {
     if (mgos_sys_config_get_i2c_sda_gpio() != 33) {
       mgos_sys_config_set_i2c_sda_gpio(33);
+      mgos_sys_config_save(&mgos_sys_config, false /* try_once */, NULL /* msg */);
     }
     reset_pin = 0;  // unknown?
   }