From 228a64e5b73f343e18adbdf71efb55e6329c6fb7 Mon Sep 17 00:00:00 2001
From: Mateusz Lubecki <sp8ebc@interia.pl>
Date: Thu, 16 Nov 2023 22:48:31 +0100
Subject: [PATCH] stack analysis stuff

---
 .cproject                                     |   5 +-
 .settings/language.settings.xml               |   2 +-
 STM32L476_ParaMETEO/WCS.py                    | 430 ++++++++++++++++++
 STM32L476_ParaMETEO/__stackanalysis/dummy.txt |   0
 STM32L476_ParaMETEO/avstack.pl                | 251 ++++++++++
 STM32L476_ParaMETEO/rc.prepare_stackanalysis  |  16 +
 STM32L476_ParaMETEO/src/subdir.mk             |   2 +-
 STM32L476_ParaMETEO/system/src/aprs/subdir.mk |   2 +-
 .../system/src/cmsis/stm32l4xx/subdir.mk      |   2 +-
 .../system/src/davis_vantage/subdir.mk        |   2 +-
 STM32L476_ParaMETEO/system/src/diag/subdir.mk |   2 +-
 .../system/src/drivers/l4/subdir.mk           |   2 +-
 .../system/src/drivers/subdir.mk              |   2 +-
 .../system/src/modbus_rtu/subdir.mk           |   2 +-
 .../system/src/stm32l4-hal-driver/subdir.mk   |   2 +-
 .../system/src/umb_master/subdir.mk           |   2 +-
 .../system/src/ve_direct_protocol/subdir.mk   |   2 +-
 17 files changed, 712 insertions(+), 14 deletions(-)
 create mode 100644 STM32L476_ParaMETEO/WCS.py
 create mode 100644 STM32L476_ParaMETEO/__stackanalysis/dummy.txt
 create mode 100644 STM32L476_ParaMETEO/avstack.pl
 create mode 100755 STM32L476_ParaMETEO/rc.prepare_stackanalysis

diff --git a/.cproject b/.cproject
index 562bd93..a96454a 100644
--- a/.cproject
+++ b/.cproject
@@ -352,6 +352,7 @@
 									<listOptionValue builtIn="false" value="PARATNC_HWREV_B"/>
 									<listOptionValue builtIn="false" value="PARATNC_HWREV_C"/>
 								</option>
+								<option id="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.other.994195951" name="Other compiler flags" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.compiler.other" useByScannerDiscovery="true" value="-fstack-usage -fdump-rtl-dfinish" valueType="string"/>
 								<inputType id="ilg.gnuarmeclipse.managedbuild.cross.tool.c.compiler.input.29354374" superClass="ilg.gnuarmeclipse.managedbuild.cross.tool.c.compiler.input"/>
 							</tool>
 							<tool id="ilg.gnuarmeclipse.managedbuild.cross.tool.cpp.compiler.1656265940" name="Cross ARM C++ Compiler" superClass="ilg.gnuarmeclipse.managedbuild.cross.tool.cpp.compiler">
@@ -415,7 +416,7 @@
 								<option id="ilg.gnuarmeclipse.managedbuild.cross.option.cpp.linker.useprintffloat.1654419641" name="Use float with nano printf (-u _printf_float)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.cpp.linker.useprintffloat" useByScannerDiscovery="false" value="true" valueType="boolean"/>
 								<option id="ilg.gnuarmeclipse.managedbuild.cross.option.cpp.linker.cref.1892757950" name="Cross reference (-Xlinker --cref)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.cpp.linker.cref" useByScannerDiscovery="false" value="true" valueType="boolean"/>
 								<option id="ilg.gnuarmeclipse.managedbuild.cross.option.cpp.linker.usenewlibnosys.1858899549" name="Do not use syscalls (--specs=nosys.specs)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.cpp.linker.usenewlibnosys" useByScannerDiscovery="false" value="true" valueType="boolean"/>
-								<option id="ilg.gnuarmeclipse.managedbuild.cross.option.cpp.linker.printmap.826060236" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.cpp.linker.printmap" value="false" valueType="boolean"/>
+								<option id="ilg.gnuarmeclipse.managedbuild.cross.option.cpp.linker.printmap.826060236" name="Print link map (-Xlinker --print-map)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.cpp.linker.printmap" value="false" valueType="boolean"/>
 								<inputType id="ilg.gnuarmeclipse.managedbuild.cross.tool.cpp.linker.input.1803255576" superClass="ilg.gnuarmeclipse.managedbuild.cross.tool.cpp.linker.input">
 									<additionalInput kind="additionalinputdependency" paths="$(USER_OBJS)"/>
 									<additionalInput kind="additionalinput" paths="$(LIBS)"/>
@@ -493,7 +494,7 @@
 								<option id="ilg.gnuarmeclipse.managedbuild.cross.option.c.linker.useprintffloat.1403039114" name="Use float with nano printf (-u _printf_float)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.linker.useprintffloat" value="true" valueType="boolean"/>
 								<option id="ilg.gnuarmeclipse.managedbuild.cross.option.c.linker.cref.139846170" name="Cross reference (-Xlinker --cref)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.linker.cref" value="true" valueType="boolean"/>
 								<option id="ilg.gnuarmeclipse.managedbuild.cross.option.c.linker.usenewlibnosys.1761390492" name="Do not use syscalls (--specs=nosys.specs)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.linker.usenewlibnosys" value="true" valueType="boolean"/>
-								<option id="ilg.gnuarmeclipse.managedbuild.cross.option.c.linker.printmap.1092992084" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.linker.printmap" value="false" valueType="boolean"/>
+								<option id="ilg.gnuarmeclipse.managedbuild.cross.option.c.linker.printmap.1092992084" name="Print link map (-Xlinker --print-map)" superClass="ilg.gnuarmeclipse.managedbuild.cross.option.c.linker.printmap" value="false" valueType="boolean"/>
 							</tool>
 							<tool id="ilg.gnuarmeclipse.managedbuild.cross.tool.cpp.linker.1243003593" name="Cross ARM C++ Linker" superClass="ilg.gnuarmeclipse.managedbuild.cross.tool.cpp.linker.233822233"/>
 							<tool id="ilg.gnuarmeclipse.managedbuild.cross.tool.archiver.2101502496" name="Cross ARM GNU Archiver" superClass="ilg.gnuarmeclipse.managedbuild.cross.tool.archiver.753718364"/>
diff --git a/.settings/language.settings.xml b/.settings/language.settings.xml
index 68f6579..56fd2a8 100644
--- a/.settings/language.settings.xml
+++ b/.settings/language.settings.xml
@@ -16,7 +16,7 @@
 			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
 			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
 			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
-			<provider class="org.eclipse.cdt.managedbuilder.language.settings.providers.GCCBuiltinSpecsDetector" console="false" env-hash="854345066964168583" id="ilg.gnuarmeclipse.managedbuild.cross.GCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT GCC Built-in Compiler Settings Cross ARM" parameter="${COMMAND} ${FLAGS} ${cross_toolchain_flags} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
+			<provider class="org.eclipse.cdt.managedbuilder.language.settings.providers.GCCBuiltinSpecsDetector" console="false" env-hash="819814870235430554" id="ilg.gnuarmeclipse.managedbuild.cross.GCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT GCC Built-in Compiler Settings Cross ARM" parameter="${COMMAND} ${FLAGS} ${cross_toolchain_flags} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
 				<language-scope id="org.eclipse.cdt.core.gcc"/>
 				<language-scope id="org.eclipse.cdt.core.g++"/>
 			</provider>
diff --git a/STM32L476_ParaMETEO/WCS.py b/STM32L476_ParaMETEO/WCS.py
new file mode 100644
index 0000000..7c771c9
--- /dev/null
+++ b/STM32L476_ParaMETEO/WCS.py
@@ -0,0 +1,430 @@
+# pylint: disable = invalid-name, too-few-public-methods
+
+import re
+import pprint
+import os
+import sys
+from typing import List, Tuple, Dict, Any
+from subprocess import check_output
+
+# Constants
+rtl_ext_end = ".dfinish"
+su_ext = '.su'
+obj_ext = '.o'
+manual_ext = '.msu'
+read_elf_path = os.getenv("CROSS_COMPILE", "") + "readelf"
+stdout_encoding = "utf-8"  # System dependant
+
+
+class Printable:
+    def __repr__(self) -> str:
+        return "<" + type(self).__name__ + "> " + pprint.pformat(vars(self), indent=4, width=1)
+
+
+class Symbol(Printable):
+    # value: int = -1
+    # size: int = -1
+    type: str = "uninitialized"
+    binding: str = "uninitialized"
+    name: str = "uninitialized"
+
+
+CallNode = Dict[str, Any]
+
+
+def calc_wcs(fxn_dict2: CallNode, parents: List[CallNode]) -> None:
+    """
+    Calculates the worst case stack for a fxn that is declared (or called from) in a given file.
+    :param parents: This function gets called recursively through the call graph.  If a function has recursion the
+    tuple file, fxn will be in the parents stack and everything between the top of the stack and the matching entry
+    has recursion.
+    :return:
+    """
+
+    # If the wcs is already known, then nothing to do
+    if 'wcs' in fxn_dict2:
+        return
+
+    # Check for pointer calls
+    if fxn_dict2['has_ptr_call']:
+        fxn_dict2['wcs'] = 'unbounded'
+        return
+
+    # Check for recursion
+    if fxn_dict2 in parents:
+        fxn_dict2['wcs'] = 'unbounded'
+        return
+
+    # Calculate WCS
+    call_max = 0
+    for call_dict in fxn_dict2['r_calls']:
+
+        # Calculate the WCS for the called function
+        calc_wcs(call_dict, parents + [fxn_dict2])
+
+        # If the called function is unbounded, so is this function
+        if call_dict['wcs'] == 'unbounded':
+            fxn_dict2['wcs'] = 'unbounded'
+            return
+
+        # Keep track of the call with the largest stack use
+        call_max = max(call_max, call_dict['wcs'])
+
+        # Propagate Unresolved Calls
+        for unresolved_call in call_dict['unresolved_calls']:
+            fxn_dict2['unresolved_calls'].add(unresolved_call)
+
+    fxn_dict2['wcs'] = call_max + fxn_dict2['local_stack']
+
+
+class CallGraph:
+    globals: Dict[str, CallNode] = {}
+    locals: Dict[str, Dict[str, CallNode]] = {}
+    weak: Dict[str, CallNode] = {}
+
+    def read_obj(self, tu: str) -> None:
+        """
+        Reads the file tu.o and gets the binding (global or local) for each function
+        :param self: a object used to store information about each function, results go here
+        :param tu: name of the translation unit (e.g. for main.c, this would be 'main')
+        """
+
+        for s in read_symbols(tu[0:tu.rindex(".")] + obj_ext):
+
+            if s.type == 'FUNC':
+                if s.binding == 'GLOBAL':
+                    # Check for multiple declarations
+                    if s.name in self.globals or s.name in self.locals:
+                        raise Exception(f'Multiple declarations of {s.name}')
+                    self.globals[s.name] = {'tu': tu, 'name': s.name, 'binding': s.binding}
+                elif s.binding == 'LOCAL':
+                    # Check for multiple declarations
+                    if s.name in self.locals and tu in self.locals[s.name]:
+                        raise Exception(f'Multiple declarations of {s.name}')
+
+                    if s.name not in self.locals:
+                        self.locals[s.name] = {}
+
+                    self.locals[s.name][tu] = {'tu': tu, 'name': s.name, 'binding': s.binding}
+                elif s.binding == 'WEAK':
+                    if s.name in self.weak:
+                        raise Exception(f'Multiple declarations of {s.name}')
+                    self.weak[s.name] = {'tu': tu, 'name': s.name, 'binding': s.binding}
+                else:
+                    raise Exception(f'Error Unknown Binding "{s.binding}" for symbol: {s.name}')
+
+    def find_fxn(self, tu: str, fxn: str):
+        """
+        Looks up the dictionary associated with the function.
+        :param self: a object used to store information about each function
+        :param tu: The translation unit in which to look for locals functions
+        :param fxn: The function name
+        :return: the dictionary for the given function or None
+        """
+
+        if fxn in self.globals:
+            return self.globals[fxn]
+        try:
+            return self.locals[fxn][tu]
+        except KeyError:
+            return None
+
+    def find_demangled_fxn(self, tu: str, fxn: str):
+        """
+        Looks up the dictionary associated with the function.
+        :param self: a object used to store information about each function
+        :param tu: The translation unit in which to look for locals functions
+        :param fxn: The function name
+        :return: the dictionary for the given function or None
+        """
+        for f in self.globals.values():
+            if 'demangledName' in f:
+                if f['demangledName'] == fxn:
+                    return f
+        for f in self.locals.values():
+            if tu in f:
+                if 'demangledName' in f[tu]:
+                    if f[tu]['demangledName'] == fxn:
+                        return f[tu]
+        return None
+
+    def read_rtl(self, tu: str, rtl_ext: str) -> None:
+        """
+        Read an RTL file and finds callees for each function and if there are calls via function pointer.
+        :param self: a object used to store information about each function, results go here
+        :param tu: the translation unit
+        """
+
+        # Construct A Call Graph
+        function = re.compile(r'^;; Function (.*) \((\S+), funcdef_no=\d+(, [a-z_]+=\d+)*\)( \([a-z ]+\))?$')
+        static_call = re.compile(r'^.*\(call.*"(.*)".*$')
+        other_call = re.compile(r'^.*call .*$')
+
+        with open(tu + rtl_ext, "rt", encoding="latin_1") as file_:
+            for line_ in file_:
+                m = function.match(line_)
+                if m:
+                    fxn_name = m.group(2)
+                    fxn_dict2 = self.find_fxn(tu, fxn_name)
+                    if not fxn_dict2:
+                        pprint.pprint(self)
+                        raise Exception(f"Error locating function {fxn_name} in {tu}")
+
+                    fxn_dict2['demangledName'] = m.group(1)
+                    fxn_dict2['calls'] = set()
+                    fxn_dict2['has_ptr_call'] = False
+                    continue
+
+                m = static_call.match(line_)
+                if m:
+                    fxn_dict2['calls'].add(m.group(1))
+                    # print("Call:  {0} -> {1}".format(current_fxn, m.group(1)))
+                    continue
+
+                m = other_call.match(line_)
+                if m:
+                    fxn_dict2['has_ptr_call'] = True
+                    continue
+
+    def read_su(self, tu: str) -> None:
+        """
+        Reads the 'local_stack' for each function.  Local stack ignores stack used by callees.
+        :param self: a object used to store information about each function, results go here
+        :param tu: the translation unit
+        :return:
+        """
+    # Needs to be able to handle both cases, i.e.:
+    #   c:\\userlibs\\gcc\\arm-none-eabi\\include\\assert.h:41:6:__assert_func	16	static
+    #   main.c:113:6:vAssertCalled	8	static
+    # Now Matches six groups https://regex101.com/r/Imi0sq/1
+
+        su_line = re.compile(r'^(.+):(\d+):(\d+):(.+)\t(\d+)\t(\S+)$')
+        i = 1
+
+        with open(tu[0:tu.rindex(".")] + su_ext, "rt", encoding="latin_1") as file_:
+            for line in file_:
+                m = su_line.match(line)
+                if m:
+                    fxn = m.group(4)
+                    fxn_dict2 = self.find_demangled_fxn(tu, fxn)
+                    fxn_dict2['local_stack'] = int(m.group(5))
+                else:
+                    print(f"error parsing line {i} in file {tu}")
+                i += 1
+
+    def read_manual(self, file: str) -> None:
+        """
+        reads the manual stack useage files.
+        :param self: a object used to store information about each function, results go here
+        :param file: the file name
+        """
+
+        with open(file, "rt", encoding="latin_1") as file_:
+            for line in file_:
+                fxn, stack_sz = line.split()
+                if fxn in self.globals:
+                    raise Exception(f"Redeclared Function {fxn}")
+                self.globals[fxn] = {'wcs': int(stack_sz),
+                                     'calls': set(),
+                                     'has_ptr_call': False,
+                                     'local_stack': int(stack_sz),
+                                     'is_manual': True,
+                                     'name': fxn,
+                                     'demangledName': fxn,
+                                     'tu': '#MANUAL',
+                                     'binding': 'GLOBAL'}
+
+    def validate_all_data(self) -> None:
+        """
+        Check that every entry in the call graph has the following fields:
+        .calls, .has_ptr_call, .local_stack, .scope, .src_line
+        """
+
+        def validate_dict(d):
+            if not ('calls' in d and 'has_ptr_call' in d and 'local_stack' in d
+                    and 'name' in d and 'tu' in d):
+                print(f"Error data is missing in fxn dictionary {d}")
+
+        # Loop through every global and local function
+        # and resolve each call, save results in r_calls
+        for fxn_dict2 in self.globals.values():
+            validate_dict(fxn_dict2)
+
+        for l_dict in self.locals.values():
+            for fxn_dict2 in l_dict.values():
+                validate_dict(fxn_dict2)
+
+    def resolve_all_calls(self) -> None:
+        def resolve_calls(fxn_dict2: CallNode) -> None:
+            fxn_dict2['r_calls'] = []
+            fxn_dict2['unresolved_calls'] = set()
+
+            for call in fxn_dict2['calls']:
+                call_dict = self.find_fxn(fxn_dict2['tu'], call)
+                if call_dict:
+                    fxn_dict2['r_calls'].append(call_dict)
+                else:
+                    fxn_dict2['unresolved_calls'].add(call)
+
+        # Loop through every global and local function
+        # and resolve each call, save results in r_calls
+        for fxn_dict in self.globals.values():
+            resolve_calls(fxn_dict)
+
+        for l_dict in self.locals.values():
+            for fxn_dict in l_dict.values():
+                resolve_calls(fxn_dict)
+
+    def calc_all_wcs(self) -> None:
+        # Loop through every global and local function
+        # and resolve each call, save results in r_calls
+        for fxn_dict in self.globals.values():
+            calc_wcs(fxn_dict, [])
+
+        for l_dict in self.locals.values():
+            for fxn_dict in l_dict.values():
+                calc_wcs(fxn_dict, [])
+
+    def print_all_fxns(self) -> None:
+
+        def print_fxn(row_format: str, fxn_dict2: CallNode) -> None:
+            unresolved = fxn_dict2['unresolved_calls']
+            stack = str(fxn_dict2['wcs'])
+            if unresolved:
+                unresolved_str = f"({' ,'.join(unresolved)})"
+                if stack != 'unbounded':
+                    stack = "unbounded:" + stack
+            else:
+                unresolved_str = ''
+
+            print(row_format.format(fxn_dict2['tu'], fxn_dict2['demangledName'], stack, unresolved_str))
+
+        def get_order(val) -> int:
+            return 1 if val == 'unbounded' else -val
+
+        # Loop through every global and local function
+        # and resolve each call, save results in r_calls
+        d_list = []
+        for fxn_dict in self.globals.values():
+            d_list.append(fxn_dict)
+
+        for l_dict in self.locals.values():
+            for fxn_dict in l_dict.values():
+                d_list.append(fxn_dict)
+
+        d_list.sort(key=lambda item: get_order(item['wcs']))
+
+        # Calculate table width
+        tu_width = max(max(len(d['tu']) for d in d_list), 16)
+        name_width = max(max(len(d['name']) for d in d_list), 13)
+        row_format = "{:<" + str(tu_width + 2) + "}  {:<" + str(name_width + 2) + "}  {:>14}  {:<17}"
+
+        # Print out the table
+        print("")
+        print(row_format.format('Translation Unit', 'Function Name', 'Stack', 'Unresolved Dependencies'))
+        for d in d_list:
+            print_fxn(row_format, d)
+
+
+def read_symbols(file: str) -> List[Symbol]:
+
+    def to_symbol(read_elf_line: str) -> Symbol:
+        v = read_elf_line.split()
+
+        s2 = Symbol()
+        # s2.value = int(v[1], 16)
+        # if ('x' in v[2]):
+        #     #raise Exception(f'Mixed symbol sizes in \'{v}\' ')
+        #     s2.size=int(v[2].split('x')[1],16)
+        # else:
+        #     s2.size = int(v[2])
+        s2.type = v[3]
+        s2.binding = v[4]
+        s2.name = v[7] if len(v) >= 8 else ""
+
+        return s2
+    output = check_output([read_elf_path, "-s", "-W", file]).decode(stdout_encoding)
+    lines = output.splitlines()[3:]
+    return [to_symbol(line) for line in lines]
+
+
+def find_rtl_ext() -> str:
+    # Find the rtl_extension
+
+    for _, _, filenames in os.walk('.'):
+        for f in filenames:
+            if f.endswith(rtl_ext_end):
+                rtl_ext = f[f[:-len(rtl_ext_end)].rindex("."):]
+                print("rtl_ext = " + rtl_ext)
+                return rtl_ext
+
+    print("Could not find any files ending with '.dfinish'.  Check that the script is being run from the correct "
+          "directory.  Check that the code was compiled with the correct flags")
+    sys.exit(-1)
+
+
+def find_files(rtl_ext: str) -> Tuple[List[str], List[str]]:
+    tu: List[str] = []
+    manual: List[str] = []
+    all_files: List[str] = []
+    for root, _, filenames in os.walk('.'):
+        for filename in filenames:
+            all_files.append(os.path.join(root, filename))
+    for f in [f for f in all_files if os.path.isfile(f) and f.endswith(rtl_ext)]:
+        base = f[0:-len(rtl_ext)]
+        short_base = base[0:base.rindex(".")]
+        if short_base + su_ext in all_files and short_base + obj_ext in all_files:
+            tu.append(base)
+            print(f'Reading: {base}{rtl_ext}, {short_base}{su_ext}, {short_base}{obj_ext}')
+
+    for f in [f for f in all_files if os.path.isfile(f) and f.endswith(manual_ext)]:
+        manual.append(f)
+        print(f'Reading: {f}')
+
+    # Print some diagnostic messages
+    if not tu:
+        print("Could not find any translation units to analyse")
+        sys.exit(-1)
+
+    return tu, manual
+
+
+def main() -> None:
+    # Find the appropriate RTL extension
+    rtl_ext = find_rtl_ext()
+
+    # Find all input files
+    call_graph: CallGraph = CallGraph()
+    tu_list, manual_list = find_files(rtl_ext)
+
+    # Read the input files
+    for tu in tu_list:
+        call_graph.read_obj(tu)  # This must be first
+
+    for fxn in call_graph.weak.values():
+        if fxn['name'] not in call_graph.globals:
+            call_graph.globals[fxn['name']] = fxn
+
+    for tu in tu_list:
+        call_graph.read_rtl(tu, rtl_ext)
+    for tu in tu_list:
+        call_graph.read_su(tu)
+
+    # Read manual files
+    for m in manual_list:
+        call_graph.read_manual(m)
+
+    # Validate Data
+    call_graph.validate_all_data()
+
+    # Resolve All Function Calls
+    call_graph.resolve_all_calls()
+
+    # Calculate Worst Case Stack For Each Function
+    call_graph.calc_all_wcs()
+
+    # Print A Nice Message With Each Function and the WCS
+    call_graph.print_all_fxns()
+
+
+main()
diff --git a/STM32L476_ParaMETEO/__stackanalysis/dummy.txt b/STM32L476_ParaMETEO/__stackanalysis/dummy.txt
new file mode 100644
index 0000000..e69de29
diff --git a/STM32L476_ParaMETEO/avstack.pl b/STM32L476_ParaMETEO/avstack.pl
new file mode 100644
index 0000000..71129fb
--- /dev/null
+++ b/STM32L476_ParaMETEO/avstack.pl
@@ -0,0 +1,251 @@
+#!/usr/bin/perl -w
+# avstack.pl: AVR stack checker
+# Copyright (C) 2013 Daniel Beer <dlbeer@gmail.com>
+#
+# Permission to use, copy, modify, and/or distribute this software for
+# any purpose with or without fee is hereby granted, provided that the
+# above copyright notice and this permission notice appear in all
+# copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+# WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+# AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+# DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+# PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+# TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+# PERFORMANCE OF THIS SOFTWARE.
+#
+# Usage
+# -----
+#
+# This script requires that you compile your code with -fstack-usage.
+# This results in GCC generating a .su file for each .o file. Once you
+# have these, do:
+#
+#    ./avstack.pl <object files>
+#
+# This will disassemble .o files to construct a call graph, and read
+# frame size information from .su. The call graph is traced to find, for
+# each function:
+#
+#    - Call height: the maximum call height of any callee, plus 1
+#      (defined to be 1 for any function which has no callees).
+#
+#    - Inherited frame: the maximum *inherited* frame of any callee, plus
+#      the GCC-calculated frame size of the function in question.
+#
+# Using these two pieces of information, we calculate a cost (estimated
+# peak stack usage) for calling the function. Functions are then listed
+# on stdout in decreasing order of cost.
+#
+# Functions which are recursive are marked with an 'R' to the left of
+# them. Their cost is calculated for a single level of recursion.
+#
+# The peak stack usage of your entire program can usually be estimated
+# as the stack cost of "main", plus the maximum stack cost of any
+# interrupt handler which might execute.
+
+use strict;
+
+# Configuration: set these as appropriate for your architecture/project.
+
+my $objdump = "/usr/local/bin/gcc-arm-none-eabi-7-2018-q2-update/bin/arm-none-eabi-objdump";
+my $call_cost = 12;
+
+# First, we need to read all object and corresponding .su files. We're
+# gathering a mapping of functions to callees and functions to frame
+# sizes. We're just parsing at this stage -- callee name resolution
+# comes later.
+
+my %frame_size;     # "func@file" -> size
+my %call_graph;     # "func@file" -> {callees}
+my %addresses;      # "addr@file" -> "func@file"
+
+my %global_name;    # "func" -> "func@file"
+my %ambiguous;      # "func" -> 1
+
+foreach (@ARGV) {
+    # Disassemble this object file to obtain a callees. Sources in the
+    # call graph are named "func@file". Targets in the call graph are
+    # named either "offset@file" or "funcname". We also keep a list of
+    # the addresses and names of each function we encounter.
+    my $objfile = $_;
+    my $source;
+
+    open(DISASSEMBLY, "$objdump -dr $objfile|") ||
+	die "Can't disassemble $objfile";
+    while (<DISASSEMBLY>) {
+	chomp;
+
+	if (/^([0-9a-fA-F]+) <(.*)>:/) {
+	    my $a = $1;
+	    my $name = $2;
+
+	    $source = "$name\@$objfile";
+	    $call_graph{$source} = {};
+	    $ambiguous{$name} = 1 if defined($global_name{$name});
+	    $global_name{$name} = "$name\@$objfile";
+
+	    $a =~ s/^0*//;
+	    $addresses{"$a\@$objfile"} = "$name\@$objfile";
+	}
+
+	if (/: R_[A-Za-z0-9_]+_CALL[ \t]+(.*)/) {
+	    my $t = $1;
+
+	    if ($t eq ".text") {
+		$t = "\@$objfile";
+	    } elsif ($t =~ /^\.text\+0x(.*)$/) {
+		$t = "$1\@$objfile";
+	    }
+
+	    $call_graph{$source}->{$t} = 1;
+	}
+    }
+    close(DISASSEMBLY);
+
+    # Extract frame sizes from the corresponding .su file.
+    if ($objfile =~ /^(.*).o$/) {
+	my $sufile = "$1.su";
+
+	open(SUFILE, "<$sufile") || die "Can't open $sufile";
+	while (<SUFILE>) {
+	    $frame_size{"$1\@$objfile"} = $2 + $call_cost
+		if /^.*:([^\t ]+)[ \t]+([0-9]+)/;
+	}
+	close(SUFILE);
+    }
+}
+
+# In this step, we enumerate each list of callees in the call graph and
+# try to resolve the symbols. We omit ones we can't resolve, but keep a
+# set of them anyway.
+
+my %unresolved;
+
+foreach (keys %call_graph) {
+    my $from = $_;
+    my $callees = $call_graph{$from};
+    my %resolved;
+
+    foreach (keys %$callees) {
+	my $t = $_;
+
+	if (defined($addresses{$t})) {
+	    $resolved{$addresses{$t}} = 1;
+	} elsif (defined($global_name{$t})) {
+	    $resolved{$global_name{$t}} = 1;
+	    warn "Ambiguous resolution: $t" if defined ($ambiguous{$t});
+	} elsif (defined($call_graph{$t})) {
+	    $resolved{$t} = 1;
+	} else {
+	    $unresolved{$t} = 1;
+	}
+    }
+
+    $call_graph{$from} = \%resolved;
+}
+
+# Create fake edges and nodes to account for dynamic behaviour.
+$call_graph{"INTERRUPT"} = {};
+
+foreach (keys %call_graph) {
+    $call_graph{"INTERRUPT"}->{$_} = 1 if /^__vector_/;
+}
+
+# Trace the call graph and calculate, for each function:
+#
+#    - inherited frames: maximum inherited frame of callees, plus own
+#      frame size.
+#    - height: maximum height of callees, plus one.
+#    - recursion: is the function called recursively (including indirect
+#      recursion)?
+
+my %has_caller;
+my %visited;
+my %total_cost;
+my %call_depth;
+
+sub trace {
+    my $f = shift;
+
+    if ($visited{$f}) {
+	$visited{$f} = "R" if $visited{$f} eq "?";
+	return;
+    }
+
+    $visited{$f} = "?";
+
+    my $max_depth = 0;
+    my $max_frame = 0;
+
+    my $targets = $call_graph{$f} || die "Unknown function: $f";
+    if (defined($targets)) {
+	foreach (keys %$targets) {
+	    my $t = $_;
+
+	    $has_caller{$t} = 1;
+	    trace($t);
+
+	    my $is = $total_cost{$t};
+	    my $d = $call_depth{$t};
+
+	    $max_frame = $is if $is > $max_frame;
+	    $max_depth = $d if $d > $max_depth;
+	}
+    }
+
+    $call_depth{$f} = $max_depth + 1;
+    $total_cost{$f} = $max_frame + ($frame_size{$f} || 0);
+    $visited{$f} = " " if $visited{$f} eq "?";
+}
+
+foreach (keys %call_graph) { trace $_; }
+
+# Now, print results in a nice table.
+printf "  %-30s %8s %8s %8s\n",
+    "Func", "Cost", "Frame", "Height";
+print "------------------------------------";
+print "------------------------------------\n";
+
+my $max_iv = 0;
+my $main = 0;
+
+foreach (sort { $total_cost{$b} <=> $total_cost{$a} } keys %visited) {
+    my $name = $_;
+
+    if (/^(.*)@(.*)$/) {
+	$name = $1 unless $ambiguous{$name};
+    }
+
+    my $tag = $visited{$_};
+    my $cost = $total_cost{$_};
+
+    $name = $_ if $ambiguous{$name};
+    $tag = ">" unless $has_caller{$_};
+
+    if (/^__vector_/) {
+	$max_iv = $cost if $cost > $max_iv;
+    } elsif (/^main@/) {
+	$main = $cost;
+    }
+
+    if ($ambiguous{$name}) { $name = $_; }
+
+    printf "%s %-30s %8d %8d %8d\n", $tag, $name, $cost,
+	$frame_size{$_} || 0, $call_depth{$_};
+}
+
+print "\n";
+
+print "Peak execution estimate (main + worst-case IV):\n";
+printf "  main = %d, worst IV = %d, total = %d\n",
+      $total_cost{$global_name{"main"}},
+      $total_cost{"INTERRUPT"},
+      $total_cost{$global_name{"main"}} + $total_cost{"INTERRUPT"};
+
+print "\n";
+
+print "The following functions were not resolved:\n";
+foreach (keys %unresolved) { print "  $_\n"; }
diff --git a/STM32L476_ParaMETEO/rc.prepare_stackanalysis b/STM32L476_ParaMETEO/rc.prepare_stackanalysis
new file mode 100755
index 0000000..53b76fc
--- /dev/null
+++ b/STM32L476_ParaMETEO/rc.prepare_stackanalysis
@@ -0,0 +1,16 @@
+#!/bin/bash
+
+rm __stackanalysis/*
+#cp WCS.py __stackanalysis/WCS.py
+cp avstack.pl __stackanalysis/avstack.pl
+
+find . -maxdepth 5 -type f -name "*.su" -exec bash -c 'filename=$(basename -- {}); echo $filename; cp {} __stackanalysis/$filename' \;
+
+find . -maxdepth 5 -type f -name "*.dfinish" -exec bash -c 'filename=$(basename -- {}); echo $filename; cp {} __stackanalysis/$filename' \;
+
+find . -maxdepth 5 -type f -name "*.o" -exec bash -c 'filename=$(basename -- {}); echo $filename; cp {} __stackanalysis/$filename' \;
+
+cd ./__stackanalysis/
+rm startup_stm32l471xx.*
+perl avstack.pl *.o > ../stack_analysis.report
+#python3.10 WCS.py
diff --git a/STM32L476_ParaMETEO/src/subdir.mk b/STM32L476_ParaMETEO/src/subdir.mk
index 840c327..3da93ee 100644
--- a/STM32L476_ParaMETEO/src/subdir.mk
+++ b/STM32L476_ParaMETEO/src/subdir.mk
@@ -98,7 +98,7 @@ C_DEPS += \
 src/%.o: ../src/%.c src/subdir.mk
 	@echo 'Building file: $<'
 	@echo 'Invoking: Cross ARM C Compiler'
-	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
+	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -fstack-usage -fdump-rtl-dfinish -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
 	@echo 'Finished building: $<'
 	@echo ' '
 
diff --git a/STM32L476_ParaMETEO/system/src/aprs/subdir.mk b/STM32L476_ParaMETEO/system/src/aprs/subdir.mk
index 3560b39..beebc03 100644
--- a/STM32L476_ParaMETEO/system/src/aprs/subdir.mk
+++ b/STM32L476_ParaMETEO/system/src/aprs/subdir.mk
@@ -47,7 +47,7 @@ C_DEPS += \
 system/src/aprs/%.o: ../system/src/aprs/%.c system/src/aprs/subdir.mk
 	@echo 'Building file: $<'
 	@echo 'Invoking: Cross ARM C Compiler'
-	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
+	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -fstack-usage -fdump-rtl-dfinish -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
 	@echo 'Finished building: $<'
 	@echo ' '
 
diff --git a/STM32L476_ParaMETEO/system/src/cmsis/stm32l4xx/subdir.mk b/STM32L476_ParaMETEO/system/src/cmsis/stm32l4xx/subdir.mk
index b1b5203..ebdacaf 100644
--- a/STM32L476_ParaMETEO/system/src/cmsis/stm32l4xx/subdir.mk
+++ b/STM32L476_ParaMETEO/system/src/cmsis/stm32l4xx/subdir.mk
@@ -34,7 +34,7 @@ system/src/cmsis/stm32l4xx/%.o: ../system/src/cmsis/stm32l4xx/%.S system/src/cms
 system/src/cmsis/stm32l4xx/%.o: ../system/src/cmsis/stm32l4xx/%.c system/src/cmsis/stm32l4xx/subdir.mk
 	@echo 'Building file: $<'
 	@echo 'Invoking: Cross ARM C Compiler'
-	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
+	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -fstack-usage -fdump-rtl-dfinish -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
 	@echo 'Finished building: $<'
 	@echo ' '
 
diff --git a/STM32L476_ParaMETEO/system/src/davis_vantage/subdir.mk b/STM32L476_ParaMETEO/system/src/davis_vantage/subdir.mk
index d2669bd..c90d153 100644
--- a/STM32L476_ParaMETEO/system/src/davis_vantage/subdir.mk
+++ b/STM32L476_ParaMETEO/system/src/davis_vantage/subdir.mk
@@ -20,7 +20,7 @@ C_DEPS += \
 system/src/davis_vantage/%.o: ../system/src/davis_vantage/%.c system/src/davis_vantage/subdir.mk
 	@echo 'Building file: $<'
 	@echo 'Invoking: Cross ARM C Compiler'
-	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
+	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -fstack-usage -fdump-rtl-dfinish -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
 	@echo 'Finished building: $<'
 	@echo ' '
 
diff --git a/STM32L476_ParaMETEO/system/src/diag/subdir.mk b/STM32L476_ParaMETEO/system/src/diag/subdir.mk
index 57f8170..8a9e512 100644
--- a/STM32L476_ParaMETEO/system/src/diag/subdir.mk
+++ b/STM32L476_ParaMETEO/system/src/diag/subdir.mk
@@ -20,7 +20,7 @@ C_DEPS += \
 system/src/diag/%.o: ../system/src/diag/%.c system/src/diag/subdir.mk
 	@echo 'Building file: $<'
 	@echo 'Invoking: Cross ARM C Compiler'
-	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
+	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -fstack-usage -fdump-rtl-dfinish -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
 	@echo 'Finished building: $<'
 	@echo ' '
 
diff --git a/STM32L476_ParaMETEO/system/src/drivers/l4/subdir.mk b/STM32L476_ParaMETEO/system/src/drivers/l4/subdir.mk
index 0bc5522..13fd984 100644
--- a/STM32L476_ParaMETEO/system/src/drivers/l4/subdir.mk
+++ b/STM32L476_ParaMETEO/system/src/drivers/l4/subdir.mk
@@ -29,7 +29,7 @@ C_DEPS += \
 system/src/drivers/l4/%.o: ../system/src/drivers/l4/%.c system/src/drivers/l4/subdir.mk
 	@echo 'Building file: $<'
 	@echo 'Invoking: Cross ARM C Compiler'
-	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
+	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -fstack-usage -fdump-rtl-dfinish -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
 	@echo 'Finished building: $<'
 	@echo ' '
 
diff --git a/STM32L476_ParaMETEO/system/src/drivers/subdir.mk b/STM32L476_ParaMETEO/system/src/drivers/subdir.mk
index 675ede8..6472241 100644
--- a/STM32L476_ParaMETEO/system/src/drivers/subdir.mk
+++ b/STM32L476_ParaMETEO/system/src/drivers/subdir.mk
@@ -32,7 +32,7 @@ C_DEPS += \
 system/src/drivers/%.o: ../system/src/drivers/%.c system/src/drivers/subdir.mk
 	@echo 'Building file: $<'
 	@echo 'Invoking: Cross ARM C Compiler'
-	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
+	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -fstack-usage -fdump-rtl-dfinish -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
 	@echo 'Finished building: $<'
 	@echo ' '
 
diff --git a/STM32L476_ParaMETEO/system/src/modbus_rtu/subdir.mk b/STM32L476_ParaMETEO/system/src/modbus_rtu/subdir.mk
index 7ed5be4..06b2864 100644
--- a/STM32L476_ParaMETEO/system/src/modbus_rtu/subdir.mk
+++ b/STM32L476_ParaMETEO/system/src/modbus_rtu/subdir.mk
@@ -26,7 +26,7 @@ C_DEPS += \
 system/src/modbus_rtu/%.o: ../system/src/modbus_rtu/%.c system/src/modbus_rtu/subdir.mk
 	@echo 'Building file: $<'
 	@echo 'Invoking: Cross ARM C Compiler'
-	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
+	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -fstack-usage -fdump-rtl-dfinish -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
 	@echo 'Finished building: $<'
 	@echo ' '
 
diff --git a/STM32L476_ParaMETEO/system/src/stm32l4-hal-driver/subdir.mk b/STM32L476_ParaMETEO/system/src/stm32l4-hal-driver/subdir.mk
index 70fe43f..45dbc72 100644
--- a/STM32L476_ParaMETEO/system/src/stm32l4-hal-driver/subdir.mk
+++ b/STM32L476_ParaMETEO/system/src/stm32l4-hal-driver/subdir.mk
@@ -329,7 +329,7 @@ C_DEPS += \
 system/src/stm32l4-hal-driver/%.o: ../system/src/stm32l4-hal-driver/%.c system/src/stm32l4-hal-driver/subdir.mk
 	@echo 'Building file: $<'
 	@echo 'Invoking: Cross ARM C Compiler'
-	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
+	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -fstack-usage -fdump-rtl-dfinish -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
 	@echo 'Finished building: $<'
 	@echo ' '
 
diff --git a/STM32L476_ParaMETEO/system/src/umb_master/subdir.mk b/STM32L476_ParaMETEO/system/src/umb_master/subdir.mk
index cc86b06..6333327 100644
--- a/STM32L476_ParaMETEO/system/src/umb_master/subdir.mk
+++ b/STM32L476_ParaMETEO/system/src/umb_master/subdir.mk
@@ -26,7 +26,7 @@ C_DEPS += \
 system/src/umb_master/%.o: ../system/src/umb_master/%.c system/src/umb_master/subdir.mk
 	@echo 'Building file: $<'
 	@echo 'Invoking: Cross ARM C Compiler'
-	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
+	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -fstack-usage -fdump-rtl-dfinish -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
 	@echo 'Finished building: $<'
 	@echo ' '
 
diff --git a/STM32L476_ParaMETEO/system/src/ve_direct_protocol/subdir.mk b/STM32L476_ParaMETEO/system/src/ve_direct_protocol/subdir.mk
index 6ef9c3e..237bed4 100644
--- a/STM32L476_ParaMETEO/system/src/ve_direct_protocol/subdir.mk
+++ b/STM32L476_ParaMETEO/system/src/ve_direct_protocol/subdir.mk
@@ -17,7 +17,7 @@ C_DEPS += \
 system/src/ve_direct_protocol/%.o: ../system/src/ve_direct_protocol/%.c system/src/ve_direct_protocol/subdir.mk
 	@echo 'Building file: $<'
 	@echo 'Invoking: Cross ARM C Compiler'
-	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
+	arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -fno-move-loop-invariants -g3 -DDEBUG -DUSE_FULL_LL_DRIVER -DSTM32L471xx -DPARAMETEO -USTM32F10X_MD_VL -UPARATNC_HWREV_A -UPARATNC_HWREV_B -UPARATNC_HWREV_C -I"../include" -I"../include/configuration_nvm" -I"../include/etc" -I"../system/include/tiny-aes" -I"../system/include/aprs" -I"../system/include" -I"../system/include/cmsis/stm32l4xx" -I"../system/include/cmsis/stm32l4xx/device" -I"../system/include/stm32l4-hal-driver" -I"../system/include/stm32l4-hal-driver/Legacy" -std=gnu11 -Wunused-function -Wall -Wa,-adhlns="$@.lst" -fstack-usage -fdump-rtl-dfinish -MMD -MP -MF"$(@:%.o=%.d)" -MT"$@" -c -o "$@" "$<"
 	@echo 'Finished building: $<'
 	@echo ' '