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‎Documents/CortexM3-generic-user-guide.pdf

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‎Documents/CortexM4-generic-user-guide.pdf

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‎README.md

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@@ -1,2 +1,3 @@
11
# CortexMxProgramming
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Repository for Udemy course : Embedded System Programming on ARM Cortex Mx..
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Check all courses here : www.fastbitlab.com

‎Source_code/001_HelloWorld/.cproject

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‎Source_code/001_HelloWorld/.project

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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>HelloWorld</name>
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<comment></comment>
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<projects>
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</projects>
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<buildSpec>
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<buildCommand>
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<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
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<triggers>clean,full,incremental,</triggers>
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<arguments>
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</arguments>
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</buildCommand>
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<buildCommand>
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<name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
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<triggers>full,incremental,</triggers>
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<arguments>
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</arguments>
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</buildCommand>
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</buildSpec>
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<natures>
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<nature>com.st.stm32cube.ide.mcu.MCUProjectNature</nature>
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<nature>org.eclipse.cdt.core.cnature</nature>
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<nature>com.st.stm32cube.ide.mcu.MCUCubeIdeServicesRevAProjectNature</nature>
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<nature>com.st.stm32cube.ide.mcu.MCUManagedMakefileProjectNature</nature>
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<nature>com.st.stm32cube.ide.mcu.MCUEndUserDisabledTrustZoneProjectNature</nature>
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<nature>com.st.stm32cube.ide.mcu.MCUSingleCpuProjectNature</nature>
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<nature>com.st.stm32cube.ide.mcu.MCURootProjectNature</nature>
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<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
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<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
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</natures>
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</projectDescription>

‎Source_code/001_HelloWorld/.settings/language.settings.xml

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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<project>
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<configuration id="com.st.stm32cube.ide.mcu.gnu.managedbuild.config.exe.debug.192133809" name="Debug">
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<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
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<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
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<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
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<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
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<provider copy-of="extension" id="org.eclipse.cdt.managedbuilder.core.GCCBuildCommandParser"/>
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<provider class="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" console="false" env-hash="-1189890973008492850" id="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" keep-relative-paths="false" name="MCU ARM GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
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<language-scope id="org.eclipse.cdt.core.gcc"/>
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<language-scope id="org.eclipse.cdt.core.g++"/>
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</provider>
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</extension>
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</configuration>
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<configuration id="com.st.stm32cube.ide.mcu.gnu.managedbuild.config.exe.release.1284197438" name="Release">
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<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
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<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
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<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
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<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
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<provider copy-of="extension" id="org.eclipse.cdt.managedbuilder.core.GCCBuildCommandParser"/>
21+
<provider class="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" console="false" env-hash="-1189890973008492850" id="com.st.stm32cube.ide.mcu.toolchain.armnone.setup.CrossBuiltinSpecsDetector" keep-relative-paths="false" name="MCU ARM GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
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<language-scope id="org.eclipse.cdt.core.gcc"/>
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<language-scope id="org.eclipse.cdt.core.g++"/>
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</provider>
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</extension>
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</configuration>
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</project>

‎Source_code/001_HelloWorld/HelloWorld Debug.cfg

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@@ -0,0 +1,46 @@
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# This is an STM32F407G-DISC1 board with a single STM32F407VGTx chip
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#
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# Generated by STM32CubeIDE
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# Take care that such file, as generated, may be overridden without any early notice. Please have a look to debug launch configuration setup(s)
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source [find interface/stlink.cfg]
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set WORKAREASIZE 0x8000
10+
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transport select "hla_swd"
12+
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set CHIPNAME STM32F407VGTx
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set BOARDNAME STM32F407G-DISC1
15+
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# Enable debug when in low power modes
17+
set ENABLE_LOW_POWER 1
18+
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# Stop Watchdog counters when halt
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set STOP_WATCHDOG 1
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# STlink Debug clock frequency
23+
set CLOCK_FREQ 8000
24+
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# Reset configuration
26+
# use hardware reset, connect under reset
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# connect_assert_srst needed if low power mode application running (WFI...)
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reset_config srst_only srst_nogate connect_assert_srst
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set CONNECT_UNDER_RESET 1
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set CORE_RESET 0
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# ACCESS PORT NUMBER
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set AP_NUM 0
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# GDB PORT
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set GDB_PORT 3333
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# BCTM CPU variables
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source [find target/stm32f4x.cfg]
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‎Source_code/001_HelloWorld/HelloWorld Debug.launch

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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<launchConfiguration type="com.st.stm32cube.ide.mcu.debug.launch.launchConfigurationType">
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<stringAttribute key="com.st.stm32cube.ide.mcu.debug.launch.access_port_id" value="0"/>
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<booleanAttribute key="com.st.stm32cube.ide.mcu.debug.launch.enable_swv" value="true"/>
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<intAttribute key="com.st.stm32cube.ide.mcu.debug.launch.formatVersion" value="2"/>
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<stringAttribute key="com.st.stm32cube.ide.mcu.debug.launch.ip_address_local" value="localhost"/>
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<stringAttribute key="com.st.stm32cube.ide.mcu.debug.launch.loadList" value="{&quot;fItems&quot;:[{&quot;fIsFromMainTab&quot;:true,&quot;fPath&quot;:&quot;Debug\\HelloWorld.elf&quot;,&quot;fProjectName&quot;:&quot;HelloWorld&quot;,&quot;fPerformBuild&quot;:true,&quot;fDownload&quot;:true,&quot;fLoadSymbols&quot;:true}]}"/>
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<stringAttribute key="com.st.stm32cube.ide.mcu.debug.launch.remoteCommand" value="target remote"/>
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<booleanAttribute key="com.st.stm32cube.ide.mcu.debug.launch.startServer" value="true"/>
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<booleanAttribute key="com.st.stm32cube.ide.mcu.debug.launch.startuptab.exception.divby0" value="true"/>
11+
<booleanAttribute key="com.st.stm32cube.ide.mcu.debug.launch.startuptab.exception.unaligned" value="false"/>
12+
<booleanAttribute key="com.st.stm32cube.ide.mcu.debug.launch.startuptab.haltonexception" value="true"/>
13+
<booleanAttribute key="com.st.stm32cube.ide.mcu.debug.launch.swd_mode" value="true"/>
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<stringAttribute key="com.st.stm32cube.ide.mcu.debug.launch.swv_port" value="61235"/>
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<stringAttribute key="com.st.stm32cube.ide.mcu.debug.launch.swv_trace_div" value="8"/>
16+
<stringAttribute key="com.st.stm32cube.ide.mcu.debug.launch.swv_trace_hclk" value="16000000"/>
17+
<booleanAttribute key="com.st.stm32cube.ide.mcu.debug.launch.useRemoteTarget" value="true"/>
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<booleanAttribute key="com.st.stm32cube.ide.mcu.debug.openocd.DBG_DEVICE_SHAREABLE_ALLOWED" value="false"/>
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<stringAttribute key="com.st.stm32cube.ide.mcu.debug.openocd.DBG_INTERFACE" value="Swd"/>
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<stringAttribute key="com.st.stm32cube.ide.mcu.debug.openocd.DBG_INTERFACE_FREQUENCY" value="8000000.0"/>
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<stringAttribute key="com.st.stm32cube.ide.mcu.debug.openocd.DBG_LOW_POWER_MODE_ALLOWED" value="true"/>
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<stringAttribute key="com.st.stm32cube.ide.mcu.debug.openocd.DBG_RESET_MODE" value="connect_under_reset"/>
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<stringAttribute key="com.st.stm32cube.ide.mcu.debug.openocd.DBG_STOP_WATCHDOG_THEN_HALTED_ALLOWED" value="true"/>
24+
<booleanAttribute key="com.st.stm32cube.ide.mcu.debug.openocd.OPENOCD_GENERATOR_OPTION" value="false"/>
25+
<stringAttribute key="com.st.stm32cube.ide.mcu.debug.openocd.OPENOCD_NAME" value="&quot;${stm32cubeide_openocd_path}\openocd.exe&quot;"/>
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<stringAttribute key="com.st.stm32cube.ide.mcu.debug.openocd.OPENOCD_OTHER_OPTIONS" value=""/>
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<stringAttribute key="com.st.stm32cube.ide.mcu.debug.openocd.OPENOCD_SCRIPT" value="${ProjDirPath}\HelloWorld Debug.cfg"/>
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<stringAttribute key="com.st.stm32cube.ide.mcu.debug.openocd.OPENOCD_SCRIPT_CHOICE" value="automated"/>
29+
<booleanAttribute key="com.st.stm32cube.ide.mcu.debug.stlink.cti_allow_halt" value="false"/>
30+
<booleanAttribute key="com.st.stm32cube.ide.mcu.debug.stlink.cti_signal_halt" value="false"/>
31+
<booleanAttribute key="com.st.stm32cube.ide.mcu.debug.stlink.enable_external_loader" value="false"/>
32+
<booleanAttribute key="com.st.stm32cube.ide.mcu.debug.stlink.enable_logging" value="false"/>
33+
<booleanAttribute key="com.st.stm32cube.ide.mcu.debug.stlink.enable_max_halt_delay" value="false"/>
34+
<booleanAttribute key="com.st.stm32cube.ide.mcu.debug.stlink.enable_shared_stlink" value="false"/>
35+
<stringAttribute key="com.st.stm32cube.ide.mcu.debug.stlink.external_loader" value=""/>
36+
<booleanAttribute key="com.st.stm32cube.ide.mcu.debug.stlink.halt_all_on_reset" value="false"/>
37+
<stringAttribute key="com.st.stm32cube.ide.mcu.debug.stlink.log_file" value="C:\Users\nieki\STM32CubeIDE\cortexmx\HelloWorld\Debug\st-link_gdbserver_log.txt"/>
38+
<stringAttribute key="com.st.stm32cube.ide.mcu.debug.stlink.max_halt_delay" value="2"/>
39+
<stringAttribute key="com.st.stm32cube.ide.mcu.debug.stlink.reset_strategy" value="system_reset"/>
40+
<booleanAttribute key="com.st.stm32cube.ide.mcu.debug.stlink.stlink_check_serial_number" value="false"/>
41+
<stringAttribute key="com.st.stm32cube.ide.mcu.debug.stlink.stlink_txt_serial_number" value=""/>
42+
<stringAttribute key="com.st.stm32cube.ide.mcu.debug.swv.datatrace_0" value="Enabled=false:Address=0x0:Access=Read/Write:Size=Word:Function=Data Value"/>
43+
<stringAttribute key="com.st.stm32cube.ide.mcu.debug.swv.datatrace_1" value="Enabled=false:Address=0x0:Access=Read/Write:Size=Word:Function=Data Value"/>
44+
<stringAttribute key="com.st.stm32cube.ide.mcu.debug.swv.datatrace_2" value="Enabled=false:Address=0x0:Access=Read/Write:Size=Word:Function=Data Value"/>
45+
<stringAttribute key="com.st.stm32cube.ide.mcu.debug.swv.datatrace_3" value="Enabled=false:Address=0x0:Access=Read/Write:Size=Word:Function=Data Value"/>
46+
<stringAttribute key="com.st.stm32cube.ide.mcu.debug.swv.itmports" value="1:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0:0"/>
47+
<stringAttribute key="com.st.stm32cube.ide.mcu.debug.swv.itmports_priv" value="0:0:0:0"/>
48+
<stringAttribute key="com.st.stm32cube.ide.mcu.debug.swv.pc_sample" value="0:16384"/>
49+
<stringAttribute key="com.st.stm32cube.ide.mcu.debug.swv.timestamps" value="1:1"/>
50+
<stringAttribute key="com.st.stm32cube.ide.mcu.debug.swv.trace_events" value="Cpi=0:Exc=0:Sleep=0:Lsu=0:Fold=0:Exetrc=0"/>
51+
<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.doHalt" value="false"/>
52+
<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.doReset" value="false"/>
53+
<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.initCommands" value=""/>
54+
<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.ipAddress" value="localhost"/>
55+
<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.jtagDevice" value="ST-LINK (OpenOCD)"/>
56+
<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.pcRegister" value=""/>
57+
<intAttribute key="org.eclipse.cdt.debug.gdbjtag.core.portNumber" value="3333"/>
58+
<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.runCommands" value="monitor arm semihosting enable"/>
59+
<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.setPcRegister" value="false"/>
60+
<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.setResume" value="true"/>
61+
<booleanAttribute key="org.eclipse.cdt.debug.gdbjtag.core.setStopAt" value="true"/>
62+
<stringAttribute key="org.eclipse.cdt.debug.gdbjtag.core.stopAt" value="main"/>
63+
<stringAttribute key="org.eclipse.cdt.dsf.gdb.DEBUG_NAME" value="${TOOLCHAIN_PATH}/arm-none-eabi-gdb"/>
64+
<booleanAttribute key="org.eclipse.cdt.dsf.gdb.NON_STOP" value="false"/>
65+
<booleanAttribute key="org.eclipse.cdt.dsf.gdb.UPDATE_THREADLIST_ON_SUSPEND" value="false"/>
66+
<intAttribute key="org.eclipse.cdt.launch.ATTR_BUILD_BEFORE_LAUNCH_ATTR" value="2"/>
67+
<stringAttribute key="org.eclipse.cdt.launch.COREFILE_PATH" value=""/>
68+
<stringAttribute key="org.eclipse.cdt.launch.DEBUGGER_START_MODE" value="remote"/>
69+
<booleanAttribute key="org.eclipse.cdt.launch.DEBUGGER_STOP_AT_MAIN" value="true"/>
70+
<stringAttribute key="org.eclipse.cdt.launch.DEBUGGER_STOP_AT_MAIN_SYMBOL" value="main"/>
71+
<stringAttribute key="org.eclipse.cdt.launch.PROGRAM_NAME" value="Debug\HelloWorld.elf"/>
72+
<stringAttribute key="org.eclipse.cdt.launch.PROJECT_ATTR" value="HelloWorld"/>
73+
<booleanAttribute key="org.eclipse.cdt.launch.PROJECT_BUILD_CONFIG_AUTO_ATTR" value="true"/>
74+
<stringAttribute key="org.eclipse.cdt.launch.PROJECT_BUILD_CONFIG_ID_ATTR" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.config.exe.debug.192133809"/>
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<listAttribute key="org.eclipse.debug.core.MAPPED_RESOURCE_PATHS">
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<listEntry value="/HelloWorld"/>
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</listAttribute>
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<listAttribute key="org.eclipse.debug.core.MAPPED_RESOURCE_TYPES">
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<listEntry value="4"/>
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</listAttribute>
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<stringAttribute key="org.eclipse.dsf.launch.MEMORY_BLOCKS" value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#13;&#10;&lt;memoryBlockExpressionList context=&quot;reserved-for-future-use&quot;/&gt;&#13;&#10;"/>
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<stringAttribute key="process_factory_id" value="org.eclipse.cdt.dsf.gdb.GdbProcessFactory"/>
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</launchConfiguration>

‎Source_code/001_HelloWorld/STM32F407VGTX_FLASH.ld

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@@ -0,0 +1,200 @@
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/*
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******************************************************************************
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**
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** File : LinkerScript.ld
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**
6+
** Author : Auto-generated by STM32CubeIDE
7+
**
8+
** Abstract : Linker script for STM32F407G-DISC1 Board embedding STM32F407VGTx Device from stm32f4 series
9+
** 1024Kbytes ROM
10+
** 128Kbytes RAM
11+
**
12+
** Set heap size, stack size and stack location according
13+
** to application requirements.
14+
**
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** Set memory bank area and size if external memory is used.
16+
**
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** Target : STMicroelectronics STM32
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**
19+
** Distribution: The file is distributed as is without any warranty
20+
** of any kind.
21+
**
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*****************************************************************************
23+
** @attention
24+
**
25+
** <h2><center>&copy; COPYRIGHT(c) 2020 STMicroelectronics</center></h2>
26+
**
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** Redistribution and use in source and binary forms, with or without modification,
28+
** are permitted provided that the following conditions are met:
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** 1. Redistributions of source code must retain the above copyright notice,
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** this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright notice,
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** this list of conditions and the following disclaimer in the documentation
33+
** and/or other materials provided with the distribution.
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** 3. Neither the name of STMicroelectronics nor the names of its contributors
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** may be used to endorse or promote products derived from this software
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** without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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** AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
40+
** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
41+
** DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
42+
** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
43+
** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
44+
** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
45+
** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
47+
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**
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*****************************************************************************
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*/
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/* Entry Point */
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ENTRY(Reset_Handler)
54+
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/* Highest address of the user mode stack */
56+
_estack = ORIGIN(RAM) + LENGTH(RAM); /* end of "RAM" Ram type memory */
57+
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_Min_Heap_Size = 0x200; /* required amount of heap */
59+
_Min_Stack_Size = 0x400; /* required amount of stack */
60+
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/* Memories definition */
62+
MEMORY
63+
{
64+
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 128K
65+
ROM (rx) : ORIGIN = 0x8000000, LENGTH = 1024K
66+
}
67+
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/* Sections */
69+
SECTIONS
70+
{
71+
/* The startup code into "ROM" Rom type memory */
72+
.isr_vector :
73+
{
74+
. = ALIGN(4);
75+
KEEP(*(.isr_vector)) /* Startup code */
76+
. = ALIGN(4);
77+
} >ROM
78+
79+
/* The program code and other data into "ROM" Rom type memory */
80+
.text :
81+
{
82+
. = ALIGN(4);
83+
*(.text) /* .text sections (code) */
84+
*(.text*) /* .text* sections (code) */
85+
*(.glue_7) /* glue arm to thumb code */
86+
*(.glue_7t) /* glue thumb to arm code */
87+
*(.eh_frame)
88+
89+
KEEP (*(.init))
90+
KEEP (*(.fini))
91+
92+
. = ALIGN(4);
93+
_etext = .; /* define a global symbols at end of code */
94+
} >ROM
95+
96+
/* Constant data into "ROM" Rom type memory */
97+
.rodata :
98+
{
99+
. = ALIGN(4);
100+
*(.rodata) /* .rodata sections (constants, strings, etc.) */
101+
*(.rodata*) /* .rodata* sections (constants, strings, etc.) */
102+
. = ALIGN(4);
103+
} >ROM
104+
105+
.ARM.extab : {
106+
. = ALIGN(4);
107+
*(.ARM.extab* .gnu.linkonce.armextab.*)
108+
. = ALIGN(4);
109+
} >ROM
110+
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.ARM : {
112+
. = ALIGN(4);
113+
__exidx_start = .;
114+
*(.ARM.exidx*)
115+
__exidx_end = .;
116+
. = ALIGN(4);
117+
} >ROM
118+
119+
.preinit_array :
120+
{
121+
. = ALIGN(4);
122+
PROVIDE_HIDDEN (__preinit_array_start = .);
123+
KEEP (*(.preinit_array*))
124+
PROVIDE_HIDDEN (__preinit_array_end = .);
125+
. = ALIGN(4);
126+
} >ROM
127+
128+
.init_array :
129+
{
130+
. = ALIGN(4);
131+
PROVIDE_HIDDEN (__init_array_start = .);
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KEEP (*(SORT(.init_array.*)))
133+
KEEP (*(.init_array*))
134+
PROVIDE_HIDDEN (__init_array_end = .);
135+
. = ALIGN(4);
136+
} >ROM
137+
138+
.fini_array :
139+
{
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. = ALIGN(4);
141+
PROVIDE_HIDDEN (__fini_array_start = .);
142+
KEEP (*(SORT(.fini_array.*)))
143+
KEEP (*(.fini_array*))
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PROVIDE_HIDDEN (__fini_array_end = .);
145+
. = ALIGN(4);
146+
} >ROM
147+
148+
/* Used by the startup to initialize data */
149+
_sidata = LOADADDR(.data);
150+
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/* Initialized data sections into "RAM" Ram type memory */
152+
.data :
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{
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. = ALIGN(4);
155+
_sdata = .; /* create a global symbol at data start */
156+
*(.data) /* .data sections */
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*(.data*) /* .data* sections */
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. = ALIGN(4);
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_edata = .; /* define a global symbol at data end */
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} >RAM AT> ROM
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/* Uninitialized data section into "RAM" Ram type memory */
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. = ALIGN(4);
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.bss :
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{
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/* This is used by the startup in order to initialize the .bss section */
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_sbss = .; /* define a global symbol at bss start */
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__bss_start__ = _sbss;
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*(.bss)
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*(.bss*)
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*(COMMON)
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. = ALIGN(4);
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_ebss = .; /* define a global symbol at bss end */
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__bss_end__ = _ebss;
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} >RAM
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/* User_heap_stack section, used to check that there is enough "RAM" Ram type memory left */
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._user_heap_stack :
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{
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. = ALIGN(8);
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PROVIDE ( end = . );
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PROVIDE ( _end = . );
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. = . + _Min_Heap_Size;
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. = . + _Min_Stack_Size;
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. = ALIGN(8);
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} >RAM
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/* Remove information from the compiler libraries */
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/DISCARD/ :
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{
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libc.a ( * )
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libm.a ( * )
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libgcc.a ( * )
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}
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.ARM.attributes 0 : { *(.ARM.attributes) }
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}

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