Add command `Restart 2` to halt system

Add command ``Restart 2`` to halt system. Needs hardware reset or power cycle to restart (#9046)

RELEASENOTES.md

@@ -58,3 +58,5 @@ The following binary downloads have been compiled with ESP8266/Arduino library c
 - Fix ESP32 PWM range
 - Add Zigbee better support for IKEA Motion Sensor
 - Add ESP32 Analog input support for GPIO32 to GPIO39
+- Add Zigbee options to ``ZbSend`` ``Config`` and ``ReadCondig``
+- Add command ``Restart 2`` to halt system. Needs hardware reset or power cycle to restart (#9046)

tasmota/CHANGELOG.md

@@ -5,7 +5,8 @@
 - Fix ESP32 PWM range
 - Add Zigbee better support for IKEA Motion Sensor
 - Add ESP32 Analog input support for GPIO32 to GPIO39
-- Add Zigbee add options to ``ZbSend`` ``Config`` and ``ReadCondig``
+- Add Zigbee options to ``ZbSend`` ``Config`` and ``ReadCondig``
+- Add command ``Restart 2`` to halt system. Needs hardware reset or power cycle to restart (#9046)
 
 ### 8.4.0 20200730
 

tasmota/i18n.h

@@ -81,6 +81,7 @@
 #define D_JSON_GAS "Gas"
 #define D_JSON_GATEWAY "Gateway"
 #define D_JSON_GROUPS "Groups"
+#define D_JSON_HALTING "Halting"
 #define D_JSON_HEAPSIZE "Heap"
 #define D_JSON_HIGH "High"
 #define D_JSON_HOST_NOT_FOUND "Host not found"
@@ -286,7 +287,7 @@
 #define D_CMND_INTERLOCK "Interlock"
 #define D_CMND_TELEPERIOD "TelePeriod"
 #define D_CMND_RESTART "Restart"
-  #define D_JSON_ONE_TO_RESTART "1 to restart"
+  #define D_JSON_ONE_TO_RESTART "1 to restart, 2 to halt"
 #define D_CMND_RESET "Reset"
   #define D_JSON_RESET_AND_RESTARTING "Reset and Restarting"
   #define D_JSON_ONE_TO_RESET "1 to reset"

tasmota/support_command.ino

@@ -695,6 +695,11 @@ void CmndRestart(void)
     restart_flag = 2;
     ResponseCmndChar(D_JSON_RESTARTING);
     break;
+  case 2:
+    restart_flag = 2;
+    restart_halt = true;
+    ResponseCmndChar(D_JSON_HALTING);
+    break;
   case -1:
     CmndCrash();    // force a crash
     break;

tasmota/support_tasmota.ino

@@ -1143,7 +1143,7 @@ void Every250mSeconds(void)
       }
       restart_flag--;
       if (restart_flag <= 0) {
-        AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_APPLICATION D_RESTARTING));
+        AddLog_P2(LOG_LEVEL_INFO, PSTR(D_LOG_APPLICATION "%s"), (restart_halt) ? "Halted" : D_RESTARTING);
         EspRestart();
       }
     }

tasmota/support_wifi.ino

@@ -640,7 +640,18 @@ void EspRestart(void)
   ResetPwm();
   WifiShutdown(true);
   CrashDumpClear();           // Clear the stack dump in RTC
-  ESP_Restart();
+
+  if (restart_halt) {
+    while (1) {
+      OsWatchLoop();          // Feed OsWatch timer to prevent restart
+      SetLedLink(1);          // Wifi led on
+      delay(200);             // Satisfy SDK
+      SetLedLink(0);          // Wifi led off
+      delay(800);             // Satisfy SDK
+    }
+  } else {
+    ESP_Restart();
+  }
 }
 
 //

tasmota/tasmota.ino

@@ -168,6 +168,7 @@ bool soft_spi_flg = false;                  // Software SPI configured
 bool ntp_force_sync = false;                // Force NTP sync
 bool is_8285 = false;                       // Hardware device ESP8266EX (0) or ESP8285 (1)
 bool skip_light_fade;                       // Temporarily skip light fading
+bool restart_halt = false;                  // Do not restart but stay in wait loop
 myio my_module;                             // Active copy of Module GPIOs (17 x 8 bits)
 gpio_flag my_module_flag;                   // Active copy of Template GPIO flags
 StateBitfield global_state;                 // Global states (currently Wifi and Mqtt) (8 bits)