> For the complete documentation index, see [llms.txt](https://longer-vision-robot.gitbook.io/stm32f767zi-full-stack/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://longer-vision-robot.gitbook.io/stm32f767zi-full-stack/chapter-2.-programming-for-stm32/2.4-qemu-simulation-blinky.md). # 2.4 QEMU Simulation - Blinky In the [previous section](/stm32f767zi-full-stack/chapter-2.-programming-for-stm32/2.3-first-stm32-project-hello-world.md), we have **NOT** run/test/debug the program yet. How to do that? Normally, there are 2 ways to test your code before flashing your code down to a chip. * **Way 1**: Test in a simulator, which simulates the **STM32** chip * **Way 2**: Test on a real **STM32** development board In this section, we are going to talk about how to run/test/debug the program in the popular simulator [**QEMU**](https://www.qemu.org/). ## 2.4.1 QEMU Installation ### Option 1: Official Installation You can directly download QEMU's **NEWEST** release from its official website . ### Option 2: Ubuntu Repository One command will do: ``` $ sudo apt install qemu ``` ### Option 3: Build from Source (Recommended) This option is adopted in our case. Just strictly follow : ``` git clone git://git.qemu.org/qemu.git cd qemu git submodule init git submodule update --recursive mkdir build cd build ../configure make -j4 ``` ### Option 4: GNU MCU Eclipse QEMU (Our Way) Since in our course, we are using [GNU MCU Eclipse Plugin](https://gnu-mcu-eclipse.github.io/), we also use [its own QEMU simulator](https://gnu-mcu-eclipse.github.io/qemu/install/), from where we should be able to find its [releases on Github](https://github.com/gnu-mcu-eclipse/qemu/releases). However, its **NEWEST** release is **v2.8.0-20170301**, which is quite **OLD**. According to [GNU MCU Eclipse QEMU](https://gnu-mcu-eclipse.github.io/qemu/), its current supported boards and MCUs: **Supported Boards**: * **Maple** - LeafLab Arduino-style STM32 microcontroller board * **NUCLEO-F103RB** - ST Nucleo Development Board for STM32 F1 series * **NetduinoGo** - Netduino GoBus Development Board with STM32F4 * **NetduinoPlus2** - Netduino Development Board with STM32F4 * **STM32-E407** - Olimex Development Board for STM32F407ZGT6 * **STM32-H103** - Olimex Header Board for STM32F103RBT6 * **STM32-P103** - Olimex Prototype Board for STM32F103RBT6 * **STM32-P107** - Olimex Prototype Board for STM32F107VCT6 * **STM32F4-Discovery** - ST Discovery kit for STM32F407/417 lines * **STM32F429I-Discovery** - ST Discovery kit for STM32F429/439 lines **Supported MCUs**: * **STM32F103RB** * **STM32F107VC** * **STM32F405RG** * **STM32F407VG** * **STM32F407ZG** * **STM32F429ZI** * **STM32L152RE** ## 2.4.2 Test QEMU ### Step 1: Create and Build Project As mentioned above, since current [GNU MCU Eclipse QEMU](https://gnu-mcu-eclipse.github.io/qemu/) does **NOT** support **STM32F767ZI** yet, we have to carry our QEMU test with another board. Here, we pick up board [STM32F429I-Discovery](http://www.st.com/en/evaluation-tools/32f429idiscovery.html) with MCU [STM32F429ZI](http://www.st.com/en/microcontrollers/stm32f429zi.html) to carry out QEMU test. Similar to [previous section](/stm32f767zi-full-stack/chapter-2.-programming-for-stm32/2.3-first-stm32-project-hello-world.md), let's first create a **Blinky** C/C++ project with board configuration **STM32F4xx** with Chip family **STM32F429xx**, as follows: ![QEMU C++ Project](/files/-LCztckXbQbu4ME1bF0V) ![QEMU Target Processor Settings](/files/-LCztck_FzyC1GrrIzNi) Then, we **Build Project** with any [ARM Embedded GCC Toolchain](/stm32f767zi-full-stack/chapter-1.-getting-started-with-stm32/1.6-stm32-online-resource.md). In our case, we build our code with **Debug** configuration with [GNU MCU Eclipse ARM Embedded GCC Toolchain](https://github.com/gnu-mcu-eclipse/arm-none-eabi-gcc/releases). ``` 12:38:20 **** Build of configuration Debug for project F429ZI_Blinky **** make all Building file: ../system/src/stm32f4-hal/stm32f4xx_hal.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -Wno-bad-function-cast -Wno-conversion -Wno-sign-conversion -Wno-unused-parameter -Wno-sign-compare -Wno-missing-prototypes -Wno-missing-declarations -MMD -MP -MF"system/src/stm32f4-hal/stm32f4xx_hal.d" -MT"system/src/stm32f4-hal/stm32f4xx_hal.o" -c -o "system/src/stm32f4-hal/stm32f4xx_hal.o" "../system/src/stm32f4-hal/stm32f4xx_hal.c" Finished building: ../system/src/stm32f4-hal/stm32f4xx_hal.c Building file: ../system/src/stm32f4-hal/stm32f4xx_hal_cortex.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -Wno-bad-function-cast -Wno-conversion -Wno-sign-conversion -Wno-unused-parameter -Wno-sign-compare -Wno-missing-prototypes -Wno-missing-declarations -MMD -MP -MF"system/src/stm32f4-hal/stm32f4xx_hal_cortex.d" -MT"system/src/stm32f4-hal/stm32f4xx_hal_cortex.o" -c -o "system/src/stm32f4-hal/stm32f4xx_hal_cortex.o" "../system/src/stm32f4-hal/stm32f4xx_hal_cortex.c" Finished building: ../system/src/stm32f4-hal/stm32f4xx_hal_cortex.c Building file: ../system/src/stm32f4-hal/stm32f4xx_hal_dfsdm.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -Wno-bad-function-cast -Wno-conversion -Wno-sign-conversion -Wno-unused-parameter -Wno-sign-compare -Wno-missing-prototypes -Wno-missing-declarations -MMD -MP -MF"system/src/stm32f4-hal/stm32f4xx_hal_dfsdm.d" -MT"system/src/stm32f4-hal/stm32f4xx_hal_dfsdm.o" -c -o "system/src/stm32f4-hal/stm32f4xx_hal_dfsdm.o" "../system/src/stm32f4-hal/stm32f4xx_hal_dfsdm.c" Finished building: ../system/src/stm32f4-hal/stm32f4xx_hal_dfsdm.c Building file: ../system/src/stm32f4-hal/stm32f4xx_hal_flash.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -Wno-bad-function-cast -Wno-conversion -Wno-sign-conversion -Wno-unused-parameter -Wno-sign-compare -Wno-missing-prototypes -Wno-missing-declarations -MMD -MP -MF"system/src/stm32f4-hal/stm32f4xx_hal_flash.d" -MT"system/src/stm32f4-hal/stm32f4xx_hal_flash.o" -c -o "system/src/stm32f4-hal/stm32f4xx_hal_flash.o" "../system/src/stm32f4-hal/stm32f4xx_hal_flash.c" Finished building: ../system/src/stm32f4-hal/stm32f4xx_hal_flash.c Building file: ../system/src/stm32f4-hal/stm32f4xx_hal_gpio.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -Wno-bad-function-cast -Wno-conversion -Wno-sign-conversion -Wno-unused-parameter -Wno-sign-compare -Wno-missing-prototypes -Wno-missing-declarations -MMD -MP -MF"system/src/stm32f4-hal/stm32f4xx_hal_gpio.d" -MT"system/src/stm32f4-hal/stm32f4xx_hal_gpio.o" -c -o "system/src/stm32f4-hal/stm32f4xx_hal_gpio.o" "../system/src/stm32f4-hal/stm32f4xx_hal_gpio.c" Finished building: ../system/src/stm32f4-hal/stm32f4xx_hal_gpio.c Building file: ../system/src/stm32f4-hal/stm32f4xx_hal_iwdg.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -Wno-bad-function-cast -Wno-conversion -Wno-sign-conversion -Wno-unused-parameter -Wno-sign-compare -Wno-missing-prototypes -Wno-missing-declarations -MMD -MP -MF"system/src/stm32f4-hal/stm32f4xx_hal_iwdg.d" -MT"system/src/stm32f4-hal/stm32f4xx_hal_iwdg.o" -c -o "system/src/stm32f4-hal/stm32f4xx_hal_iwdg.o" "../system/src/stm32f4-hal/stm32f4xx_hal_iwdg.c" Finished building: ../system/src/stm32f4-hal/stm32f4xx_hal_iwdg.c Building file: ../system/src/stm32f4-hal/stm32f4xx_hal_pwr.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -Wno-bad-function-cast -Wno-conversion -Wno-sign-conversion -Wno-unused-parameter -Wno-sign-compare -Wno-missing-prototypes -Wno-missing-declarations -MMD -MP -MF"system/src/stm32f4-hal/stm32f4xx_hal_pwr.d" -MT"system/src/stm32f4-hal/stm32f4xx_hal_pwr.o" -c -o "system/src/stm32f4-hal/stm32f4xx_hal_pwr.o" "../system/src/stm32f4-hal/stm32f4xx_hal_pwr.c" Finished building: ../system/src/stm32f4-hal/stm32f4xx_hal_pwr.c Building file: ../system/src/stm32f4-hal/stm32f4xx_hal_rcc.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -Wno-bad-function-cast -Wno-conversion -Wno-sign-conversion -Wno-unused-parameter -Wno-sign-compare -Wno-missing-prototypes -Wno-missing-declarations -MMD -MP -MF"system/src/stm32f4-hal/stm32f4xx_hal_rcc.d" -MT"system/src/stm32f4-hal/stm32f4xx_hal_rcc.o" -c -o "system/src/stm32f4-hal/stm32f4xx_hal_rcc.o" "../system/src/stm32f4-hal/stm32f4xx_hal_rcc.c" Finished building: ../system/src/stm32f4-hal/stm32f4xx_hal_rcc.c Building file: ../system/src/newlib/_cxx.cpp Invoking: GNU ARM Cross C++ Compiler arm-none-eabi-g++ -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu++11 -fabi-version=0 -fno-exceptions -fno-rtti -fno-use-cxa-atexit -fno-threadsafe-statics -MMD -MP -MF"system/src/newlib/_cxx.d" -MT"system/src/newlib/_cxx.o" -c -o "system/src/newlib/_cxx.o" "../system/src/newlib/_cxx.cpp" Finished building: ../system/src/newlib/_cxx.cpp Building file: ../system/src/newlib/_exit.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -MMD -MP -MF"system/src/newlib/_exit.d" -MT"system/src/newlib/_exit.o" -c -o "system/src/newlib/_exit.o" "../system/src/newlib/_exit.c" Finished building: ../system/src/newlib/_exit.c Building file: ../system/src/newlib/_sbrk.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -MMD -MP -MF"system/src/newlib/_sbrk.d" -MT"system/src/newlib/_sbrk.o" -c -o "system/src/newlib/_sbrk.o" "../system/src/newlib/_sbrk.c" Finished building: ../system/src/newlib/_sbrk.c Building file: ../system/src/newlib/_startup.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -DOS_INCLUDE_STARTUP_INIT_MULTIPLE_RAM_SECTIONS -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -MMD -MP -MF"system/src/newlib/_startup.d" -MT"system/src/newlib/_startup.d" -c -o "system/src/newlib/_startup.o" "../system/src/newlib/_startup.c" Finished building: ../system/src/newlib/_startup.c Building file: ../system/src/newlib/_syscalls.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -MMD -MP -MF"system/src/newlib/_syscalls.d" -MT"system/src/newlib/_syscalls.o" -c -o "system/src/newlib/_syscalls.o" "../system/src/newlib/_syscalls.c" Finished building: ../system/src/newlib/_syscalls.c Building file: ../system/src/newlib/assert.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -MMD -MP -MF"system/src/newlib/assert.d" -MT"system/src/newlib/assert.o" -c -o "system/src/newlib/assert.o" "../system/src/newlib/assert.c" Finished building: ../system/src/newlib/assert.c Building file: ../system/src/diag/Trace.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -MMD -MP -MF"system/src/diag/Trace.d" -MT"system/src/diag/Trace.o" -c -o "system/src/diag/Trace.o" "../system/src/diag/Trace.c" Finished building: ../system/src/diag/Trace.c Building file: ../system/src/diag/trace_impl.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -MMD -MP -MF"system/src/diag/trace_impl.d" -MT"system/src/diag/trace_impl.o" -c -o "system/src/diag/trace_impl.o" "../system/src/diag/trace_impl.c" Finished building: ../system/src/diag/trace_impl.c Building file: ../system/src/cortexm/_initialize_hardware.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -MMD -MP -MF"system/src/cortexm/_initialize_hardware.d" -MT"system/src/cortexm/_initialize_hardware.o" -c -o "system/src/cortexm/_initialize_hardware.o" "../system/src/cortexm/_initialize_hardware.c" Finished building: ../system/src/cortexm/_initialize_hardware.c Building file: ../system/src/cortexm/_reset_hardware.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -MMD -MP -MF"system/src/cortexm/_reset_hardware.d" -MT"system/src/cortexm/_reset_hardware.o" -c -o "system/src/cortexm/_reset_hardware.o" "../system/src/cortexm/_reset_hardware.c" Finished building: ../system/src/cortexm/_reset_hardware.c Building file: ../system/src/cortexm/exception_handlers.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -MMD -MP -MF"system/src/cortexm/exception_handlers.d" -MT"system/src/cortexm/exception_handlers.o" -c -o "system/src/cortexm/exception_handlers.o" "../system/src/cortexm/exception_handlers.c" Finished building: ../system/src/cortexm/exception_handlers.c Building file: ../system/src/cmsis/system_stm32f4xx.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -MMD -MP -MF"system/src/cmsis/system_stm32f4xx.d" -MT"system/src/cmsis/system_stm32f4xx.o" -c -o "system/src/cmsis/system_stm32f4xx.o" "../system/src/cmsis/system_stm32f4xx.c" Finished building: ../system/src/cmsis/system_stm32f4xx.c Building file: ../system/src/cmsis/vectors_stm32f429xx.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -MMD -MP -MF"system/src/cmsis/vectors_stm32f429xx.d" -MT"system/src/cmsis/vectors_stm32f429xx.o" -c -o "system/src/cmsis/vectors_stm32f429xx.o" "../system/src/cmsis/vectors_stm32f429xx.c" Finished building: ../system/src/cmsis/vectors_stm32f429xx.c Building file: ../src/BlinkLed.cpp Invoking: GNU ARM Cross C++ Compiler arm-none-eabi-g++ -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu++11 -fabi-version=0 -fno-exceptions -fno-rtti -fno-use-cxa-atexit -fno-threadsafe-statics -MMD -MP -MF"src/BlinkLed.d" -MT"src/BlinkLed.o" -c -o "src/BlinkLed.o" "../src/BlinkLed.cpp" Finished building: ../src/BlinkLed.cpp Building file: ../src/Timer.cpp Invoking: GNU ARM Cross C++ Compiler arm-none-eabi-g++ -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu++11 -fabi-version=0 -fno-exceptions -fno-rtti -fno-use-cxa-atexit -fno-threadsafe-statics -MMD -MP -MF"src/Timer.d" -MT"src/Timer.o" -c -o "src/Timer.o" "../src/Timer.cpp" Finished building: ../src/Timer.cpp Building file: ../src/_initialize_hardware.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -MMD -MP -MF"src/_initialize_hardware.d" -MT"src/_initialize_hardware.o" -c -o "src/_initialize_hardware.o" "../src/_initialize_hardware.c" ../src/_initialize_hardware.c: In function 'SystemClock_Config': ../src/_initialize_hardware.c:126:2: warning: #warning "Please check if the SystemClock_Config() settings match your board!" [-Wcpp] #warning "Please check if the SystemClock_Config() settings match your board!" ^~~~~~~ Finished building: ../src/_initialize_hardware.c Building file: ../src/_write.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -MMD -MP -MF"src/_write.d" -MT"src/_write.o" -c -o "src/_write.o" "../src/_write.c" Finished building: ../src/_write.c Building file: ../src/main.cpp Invoking: GNU ARM Cross C++ Compiler arm-none-eabi-g++ -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu++11 -fabi-version=0 -fno-exceptions -fno-rtti -fno-use-cxa-atexit -fno-threadsafe-statics -MMD -MP -MF"src/main.d" -MT"src/main.o" -c -o "src/main.o" "../src/main.cpp" ../src/main.cpp:121:2: warning: #warning "Assume a STM32F429I-Discovery board, PG13-PG14, active high." [-Wcpp] #warning "Assume a STM32F429I-Discovery board, PG13-PG14, active high." ^~~~~~~ Finished building: ../src/main.cpp Building file: ../src/stm32f4xx_hal_msp.c Invoking: GNU ARM Cross C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -DDEBUG -DUSE_FULL_ASSERT -DOS_USE_SEMIHOSTING -DTRACE -DOS_USE_TRACE_SEMIHOSTING_DEBUG -DSTM32F429xx -DUSE_HAL_DRIVER -DHSE_VALUE=8000000 -I"../include" -I"../system/include" -I"../system/include/cmsis" -I"../system/include/stm32f4-hal" -std=gnu11 -Wno-missing-prototypes -Wno-missing-declarations -MMD -MP -MF"src/stm32f4xx_hal_msp.d" -MT"src/stm32f4xx_hal_msp.d" -c -o "src/stm32f4xx_hal_msp.o" "../src/stm32f4xx_hal_msp.c" Finished building: ../src/stm32f4xx_hal_msp.c Building target: F429ZI_Blinky.elf Invoking: GNU ARM Cross C++ Linker arm-none-eabi-g++ -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants -Wall -Wextra -g3 -T mem.ld -T libs.ld -T sections.ld -nostartfiles -Xlinker --gc-sections -L"../ldscripts" -Wl,-Map,"F429ZI_Blinky.map" --specs=nano.specs -o "F429ZI_Blinky.elf" ./system/src/stm32f4-hal/stm32f4xx_hal.o ./system/src/stm32f4-hal/stm32f4xx_hal_cortex.o ./system/src/stm32f4-hal/stm32f4xx_hal_dfsdm.o ./system/src/stm32f4-hal/stm32f4xx_hal_flash.o ./system/src/stm32f4-hal/stm32f4xx_hal_gpio.o ./system/src/stm32f4-hal/stm32f4xx_hal_iwdg.o ./system/src/stm32f4-hal/stm32f4xx_hal_pwr.o ./system/src/stm32f4-hal/stm32f4xx_hal_rcc.o ./system/src/newlib/_cxx.o ./system/src/newlib/_exit.o ./system/src/newlib/_sbrk.o ./system/src/newlib/_startup.o ./system/src/newlib/_syscalls.o ./system/src/newlib/assert.o ./system/src/diag/Trace.o ./system/src/diag/trace_impl.o ./system/src/cortexm/_initialize_hardware.o ./system/src/cortexm/_reset_hardware.o ./system/src/cortexm/exception_handlers.o ./system/src/cmsis/system_stm32f4xx.o ./system/src/cmsis/vectors_stm32f429xx.o ./src/BlinkLed.o ./src/Timer.o ./src/_initialize_hardware.o ./src/_write.o ./src/main.o ./src/stm32f4xx_hal_msp.o Finished building target: F429ZI_Blinky.elf Invoking: GNU ARM Cross Create Flash Image arm-none-eabi-objcopy -O ihex "F429ZI_Blinky.elf" "F429ZI_Blinky.hex" Finished building: F429ZI_Blinky.hex Invoking: GNU ARM Cross Print Size arm-none-eabi-size --format=berkeley "F429ZI_Blinky.elf" text data bss dec hex filename 13278 520 740 14538 38ca F429ZI_Blinky.elf Finished building: F429ZI_Blinky.siz 12:38:24 Build Finished (took 3s.574ms) ``` As you can see, a file named **F429ZI\_Blinky.elf** is produced under folder **Debug** or **Release**, depending on what kind of target/configuration you specified to build. ### Step 2: Run Project with QEMU Finally, we need to run the project by emulating **STM32F429I-Discovery** with chip **STM32F429ZI** via **QEMU**. Right click on the built file **HelloWorld.elf** -> **Run As** -> **Run Configurations** -> **GDB QEMU Debugging** -> **New**. We creat a new configuration named **F429ZI\_Blinky QEMU**, and make the **Run Configurations** as in the following two images: ![Run Configurations QEMU - Main Tab](/files/-LCztcltNxE4mZLzMFqw) ![Run Configurations QEMU - Debugger Tab](/files/-LCztclv1fB3J04GA0Ra) And the project **Blinky** successfully run with the following output: ``` GNU ARM Eclipse 64-bits QEMU v2.8.0 (qemu-system-gnuarmeclipse). Board: 'STM32F429I-Discovery' (ST Discovery kit for STM32F429/439 lines). Device: 'STM32F429ZI' (Cortex-M4 r0p0, MPU, 4 NVIC prio bits, 91 IRQs), Flash: 2048 kB, RAM: 192 kB. Command line: 'F429ZI_Blinky' (13 bytes). Cortex-M4 r0p0 core initialised. GDB Server listening on: 'tcp::1234'... Cortex-M4 r0p0 core reset. ... connection accepted from 127.0.0.1. Execute 'mon system_reset'. Cortex-M4 r0p0 core reset. PRIGROUP unimplemented main(argc=1, argv=["F429ZI_Blinky"]); Hello ARM World! Standard output message. Standard error message. System clock: 168000000 Hz [led:green on] [led:red on] [led:green off] [led:red off] Second 1 [led:green on] [led:green off] [led:red on] Second 2 [led:red off] Second 3 [led:green on] Second 4 [led:green off] [led:red on] Second 5 [led:green on] [led:green off] Second 6 [led:red off] Second 7 [led:green on] [led:red on] QEMU semihosting exit(0) ``` And [GNU MCU Eclipse QEMU](https://gnu-mcu-eclipse.github.io/qemu/) emulates **STM32F429I-Discovery** board on the screen as follows: ![Running Blinky](/files/-LCztcm0R6TYg1TceLDQ)