added BOOTLOCK

firmware/open_evse/CHANGELOG

@@ -1,5 +1,8 @@
 Change Log
 
+20230206 SCL
+- added BOOTLOCK - when defined, EVSE locked until receives $SB
+
 20220408 V8.2.1 SCL
 - fix bug: SaveSettings() should save GetMaxCurrentCapacity() instead of GetCurrentCapacity(), in case called during throttling
 

firmware/open_evse/J1772EvseController.cpp

@@ -1,7 +1,7 @@
 /*
  * This file is part of Open EVSE.
  *
- * Copyright (c) 2011-2021 Sam C. Lin
+ * Copyright (c) 2011-2023 Sam C. Lin
  *
  * Open EVSE is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -1079,6 +1079,10 @@ void J1772EVSEController::Init()
 
   m_wVFlags = ECVF_DEFAULT;
 
+#ifdef BOOTLOCK
+  m_wVFlags |= ECVF_BOOT_LOCK;
+#endif
+
   m_MaxHwCurrentCapacity = eeprom_read_byte((uint8_t*)EOFS_MAX_HW_CURRENT_CAPACITY);
   if (!m_MaxHwCurrentCapacity || (m_MaxHwCurrentCapacity == (uint8_t)0xff)) {
     m_MaxHwCurrentCapacity = MAX_CURRENT_CAPACITY_L2;

firmware/open_evse/J1772EvseController.h

@@ -2,7 +2,7 @@
 /*
  * This file is part of Open EVSE.
  *
- * Copyright (c) 2011-2021 Sam C. Lin
+ * Copyright (c) 2011-2023 Sam C. Lin
  *
  * Open EVSE is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -102,7 +102,7 @@ typedef uint8_t (*EvseStateTransitionReqFunc)(uint8_t prevPilotState,uint8_t cur
 #define ECVF_UI_IN_MENU         0x0800 // onboard UI currently in a menu
 #define ECVF_TIMER_ON           0x1000 // delay timer enabled
 #define ECVF_CHARGE_LIMIT       0x2000
-// reserved #define ECVF_BOOT_LOCK          0x4000 // locked at boot
+#define ECVF_BOOT_LOCK          0x4000 // locked at boot
 #define ECVF_MENNEKES_MANUAL    0x8000 // Mennekes lock manual mode
 #if defined(AUTH_LOCK) && (AUTH_LOCK != 0)
 #define ECVF_DEFAULT            ECVF_AUTH_LOCKED|ECVF_SESSION_ENDED
@@ -389,6 +389,17 @@ class J1772EVSEController {
   uint8_t ReadACPins();
 #endif // ADVPWR
 
+  void ClearBootLock() {
+    clrVFlags(ECVF_BOOT_LOCK);
+  }
+  uint8_t IsBootLocked() {
+#ifdef BOOTLOCK
+    return vFlagIsSet(ECVF_BOOT_LOCK) ? 1 : 0;
+#else
+    return 0;
+#endif
+  }
+
   void HardFault(int8_t recoverable);
 
   void SetLimitSleep(int8_t tf) {

firmware/open_evse/main.cpp

@@ -2,7 +2,7 @@
 /*
  * Open EVSE Firmware
  *
- * Copyright (c) 2011-2021 Sam C. Lin
+ * Copyright (c) 2011-2023 Sam C. Lin
  * Copyright (c) 2011-2014 Chris Howell <chris1howell@msn.com>
  * timer code Copyright (c) 2013 Kevin L <goldserve1@hotmail.com>
  * portions Copyright (c) 2014-2015 Nick Sayer <nsayer@kfu.com>
@@ -2486,12 +2486,22 @@ void setup()
   g_EvseController.SetStateTransitionReqFunc(&StateTransitionReqFunc);
 #endif //PP_AUTO_AMPACITY
 
-  EvseReset();
-
 #ifdef TEMPERATURE_MONITORING
   g_TempMonitor.Init();
 #endif
 
+  EvseReset();
+
+#ifdef BOOTLOCK
+#ifdef LCD16X2
+  g_OBD.LcdMsg_P(PSTR("Waiting for"),PSTR("Initialization.."));
+#endif // LCD16X2
+  while (g_EvseController.IsBootLocked()) {
+    ProcessInputs();
+  }
+#endif // BOOTLOCK
+
+
   WDT_ENABLE();
 }  // setup()
 

firmware/open_evse/open_evse.h

@@ -69,6 +69,9 @@ typedef unsigned long time_t;
 // auto detect L1/L2
 #define AUTOSVCLEVEL
 
+// on boot, EVSE locked until receives $SB 
+//#define BOOTLOCK
+
 // show disabled tests before POST
 #define SHOW_DISABLED_TESTS
 

firmware/open_evse/rapi_proc.cpp

@@ -2,7 +2,7 @@
 /*
  * Open EVSE Firmware
  *
- * Copyright (c) 2013-2021 Sam C. Lin <lincomatic@gmail.com>
+ * Copyright (c) 2013-2023 Sam C. Lin <lincomatic@gmail.com>
  *
  * This file is part of Open EVSE.
 
@@ -445,6 +445,19 @@ int EvseRapiProcessor::processCmd()
       }
       break;
 #endif // AMMETER
+#ifdef BOOTLOCK
+    case 'B':
+      if (g_EvseController.InFaultState()) {
+        strcpy(buffer,"1");
+      }
+      else {
+        g_EvseController.ClearBootLock();
+        strcpy(buffer,"0");
+      }
+      bufCnt=1;
+      rc = 0;
+      break;
+#endif // BOOTLOCK
     case 'C': // current capacity
       if ((tokenCnt == 2) || (tokenCnt == 3)) {
 	u2.u8 = dtou32(tokens[1]);

firmware/open_evse/rapi_proc.h

@@ -2,7 +2,7 @@
 /*
  * Open EVSE Firmware
  *
- * Copyright (c) 2013-2021 Sam C. Lin <lincomatic@gmail.com>
+ * Copyright (c) 2013-2023 Sam C. Lin <lincomatic@gmail.com>
  *
  * This file is part of Open EVSE.
 
@@ -172,6 +172,10 @@ S5 A|M|0|1 - Mennekes lock setting
    1 = lock (valid only in manual mode)
    n.b. requires MENNEKES_LOCK. manual mode is volatile - always boots in automatic mode
 SA currentscalefactor currentoffset - set ammeter settings
+SB - clear boot lock
+  when BOOTLOCK is defined, EVSE won't allow charging after boot up until SB is received
+ response: $OK 0 = unlock success
+           $OK 1 = unlock fail - EVSE currently in fault state
 SC amps [V|M]- set current capacity
  response:
    if amps < minimum current capacity, will set to minimum and return $NK ampsset

platformio.ini

@@ -24,9 +24,10 @@ upload_flags = -F -e
 #platform = atmelavr@1.4.1
 # Arduino 1.6.23
 platform = atmelavr@1.15.0
-src_build_flags = 
+build_src_flags = 
  -DOEV6
  -DRELAY_PWM
+# -DBOOTLOCK
 # -DENABLE_CGMI                
  -DAUTOSVCLEVEL
  -DSHOW_DISABLED_TESTS