New Stable Release v1.18.1 (#199)

* esp32: Added New scripts and updates for Sequans LTE modem firmware Upgrading

* New Stable Version v1.18.1

- Added Updated Scripts for Sequans LTE modem as frozen code.
- Added support for upgrading Sequans modem over Uart.

* py/mkrules.mk: fixed error

Author: Islam Wahdan

esp32/frozen/_boot.py esp32/frozen/Base/_boot.pyesp32/frozen/_boot.py renamed to esp32/frozen/Base/_boot.py

@@ -0,0 +1,86 @@
+# -*- python -*-
+#################################################################
+#
+# Module : CODEC
+# Purpose: Base encoders/decoders
+#
+#################################################################
+#
+#  Copyright (c) 2011 SEQUANS Communications.
+#  All rights reserved.
+#
+#  This is confidential and proprietary source code of SEQUANS
+#  Communications. The use of the present source code and all
+#  its derived forms is exclusively governed by the restricted
+#  terms and conditions set forth in the SEQUANS
+#  Communications' EARLY ADOPTER AGREEMENT and/or LICENCE
+#  AGREEMENT. The present source code and all its derived
+#  forms can ONLY and EXCLUSIVELY be used with SEQUANS
+#  Communications' products. The distribution/sale of the
+#  present source code and all its derived forms is EXCLUSIVELY
+#  RESERVED to regular LICENCE holder and otherwise STRICTLY
+#  PROHIBITED.
+#
+#################################################################
+import struct, array
+
+LITTLE_ENDIAN = "<"
+NATIVE_ENDIAN = "="
+BIG_ENDIAN = ">"
+
+# -------------------------------------------------// Utility /__________________________________
+class encode:
+    @staticmethod
+    def u32 (value, endian = BIG_ENDIAN):
+        return array.array("c", struct.pack(endian + "I", value))
+
+    @staticmethod
+    def s32 (value, endian = BIG_ENDIAN):
+        if value < 0:
+            value = 0x100000000 + value
+        return encode.u32(value, endian)
+
+    @staticmethod
+    def u16 (value, endian = BIG_ENDIAN):
+        return array.array("c", struct.pack(endian + "H", value))
+
+    @staticmethod
+    def u8 (value, endian = None):
+        return array.array("c", chr(value))
+
+    @staticmethod
+    def string (value, endian = None):
+        return array.array("c", value + "\x00")
+
+class decode:
+    @staticmethod
+    def u32 (value, endian = BIG_ENDIAN):
+        return struct.unpack(endian + "I", value)[0]
+
+    @staticmethod
+    def s32 (value, endian = BIG_ENDIAN):
+        v = decode.u32(value, endian)
+        if v & (1 << 31):
+            return v - 0x100000000
+        return v
+
+    @staticmethod
+    def u16 (value, endian = BIG_ENDIAN):
+        return struct.unpack(endian + "H", value)[0]
+
+    @staticmethod
+    def u8 (value, endian = None):
+        return ord(value)
+
+    @staticmethod
+    def string (value, endian = None):
+        offset = 0
+        str = ""
+        c = value[offset]
+        while c != '\x00':
+            offset += 1
+            str += c
+            c = value[offset]
+
+        return str
+