文件列表:

.vscode (0, 2020-06-07)
.vscode\c_cpp_properties.json (923, 2020-06-07)
LICENSE (1070, 2020-06-07)
flash (0, 2020-06-07)
flash\STM32F407VGTX_FLASH.ld (5948, 2020-06-07)
flash\STM32F407VGTX_RAM.ld (5965, 2020-06-07)
include (0, 2020-06-07)
include\cs43l22.h (1973, 2020-06-07)
include\debug.h (2233, 2020-06-07)
include\lis302dl.h (435, 2020-06-07)
include\startup_stm32f407vgtx.s (20761, 2020-06-07)
include\stm32f401xc.h (719923, 2020-06-07)
include\stm32f401xe.h (719923, 2020-06-07)
include\stm32f405xx.h (1228777, 2020-06-07)
include\stm32f407xx.h (1344524, 2020-06-07)
include\stm32f429xx.h (1475167, 2020-06-07)
include\stm32f4xx.h (10744, 2020-06-07)
include\system_stm32f4xx.c (2918, 2020-06-07)
include\system_stm32f4xx.h (1093, 2020-06-07)
libs (0, 2020-06-07)
libs\CMSIS_5 (0, 2020-06-07)
projects (0, 2020-06-07)
projects\armf4.mk (3232, 2020-06-07)
projects\blinky (0, 2020-06-07)
projects\blinky\.cproject (33360, 2020-06-07)
projects\blinky\.project (1237, 2020-06-07)
projects\blinky\blinky.c (4887, 2020-06-07)
projects\blinky\makefile (216, 2020-06-07)
projects\clock (0, 2020-06-07)
projects\clock\.cproject (30563, 2020-06-07)
projects\clock\.project (1379, 2020-06-07)
projects\clock\clock.c (6870, 2020-06-07)
projects\clock\makefile (247, 2020-06-07)
projects\dac-timer (0, 2020-06-07)
projects\dac-timer\.cproject (29759, 2020-06-07)
projects\dac-timer\.project (1383, 2020-06-07)
... ...

# stm32f4-bare-metal Bare metal STM32F4 examples to serve as starting points for projects. Educational purposes. Some of the STM32F4xx family based processor headers are added in the `include` folder to get register locations. CMSIS library is added for a general support. No extra HAL libraries is used except the selected projects described below. Common startup functions are located in the `include/startup_stm32f407vgtx.s` and `include/system_stm32f4xx.c` files to be included in all projects. ## Installation First, clone the project using `git clone --recurse-submodules https://github.com/fcayci/stm32f4-bare-metal`. The repository includes other repositories such as `CMSIS` as submodules under `lib` folder. You can alternatively clone the repository, then initialize and update the submodules with `git submodule init` and `git submodule update` commands. ## Development There are two options for development. First one is to use [STM32CubeIDE](https://www.st.com/en/development-tools/stm32cubeide.html) from ST. Second one is the setup your own development environment. Both options are supported with relevant project settings or makefiles. ### Option 1 - STM32CubeIDE - Download and install [STM32CubeIDE](https://www.st.com/en/development-tools/stm32cubeide.html). Select workspace on the root folder, then import existing projects to workspace. (File -> Import -> General -> Existing Projects into Workspace) - You do not need any additional tools. It comes with the compiler and debugger pre-installed. - Rest of the sections are for Option 2. ### Option 2 - Custom development environment - Get **toolchain** (for compiler and binutils) from [GNU Arm Embedded Toolchain](https://developer.arm.com/open-source/gnu-toolchain/gnu-rm/downloads) - *For windows only*, install **make** tool. You can just get the make tool from [gnuwin32](http://gnuwin32.sourceforge.net/packages/make.htm). Alternatively you can install the minimalist GNU tools for windows from [mingw](https://mingw-w***.org/) and [MSYS](https://www.msys2.org/) - For the **programmer/debugger**, you can use - [stlink](https://github.com/texane/stlink) or [OpenOCD](http://openocd.org/). Though only stlink utility support is added. - You can use your favorite code editor to view/edit the contents. Here is an open source one: [Visual Studio Code](https://code.visualstudio.com/). #### Compile [makefile](projects/armf4.mk) contains necessary build scripts and compiler flags for all projects. Individual settings can be changed from local makefiles from projects such as [blinky makefile](projects/blinky/makefile) Browse into any directory and run `make` to compile. ``` cd projects/blinky make ``` If everything is setup correctly, you should see the completed message. ``` Cleaning blinky Building blinky.c text data bss dec hex filename 852 8 1568 2428 97c blinky.elf Successfully finished... ``` If you see any errors about command not found, make sure the toolchain binaries are in your `PATH`. On Windows check the *Environment Variables* for your account. On Linux/macOS run `echo $PATH` to verify your installation. #### Program Run `make burn` to program the chip. ``` ... .. Flash written and verified! jolly good! ``` Install the [ST LINK](https://www.st.com/en/development-tools/st-link-v2.html) drivers if you cannot see your board when `make burn` is run. #### Disassemble Run `make disass` / `make disass-all` to disassamble. #### Debug In order to debug your code, connect your board to the PC, run `st-util` (comes with stlink utility) from one terminal, and from another terminal within the project directory run `make debug`. You can then use general **gdb** commands to browse through the code. ## Projects * [blinky](projects/blinky/) - Good old blink LEDs example * [clock](projects/clock/) - Shows how to change clock frequencies on the fly * [math](projects/math/) - A simple sine function to test math library operation * [systick](projects/systick/) - Blinks LEDs using systick timer. * [timer](projects/timer/) - Blinks LEDs one at a time using the Timer module and Timer interrupt * [pwm](projects/pwm/) - Fades an LED using pwm functionality using Timer module * [external](projects/external/) - External interrupt example using the on-board push-button * [dac](projects/dac/) - On-chip digital to analog converter operation * [dac-timer](projects/dac-timer/) - On-chip digital to analog converter operation with timer trigger * [uart](projects/uart/) - UART example to show how to send data over * [uart-tx-int](projects/uart-tx-int/) - UART example with tx interrupt * [uart-dma](projects/uart-dma/) - UART tx example with DMA transfer * [spi](projects/spi/) - SPI example that is customized for on-board motion sensor (lis302dl version) * [i2c](projects/i2c/) - I2C example that communicates with the on-board Audio DAC * [wwdg](projects/wwdg/) - Window Watchdog example * [itm](projects/itm/) - Message sending through CoreSight ITM port 0 * [dma](projects/dma/) - Example DMA transfer using memory-to-memory mode * [sleepy](projects/sleepy/) - Low Power mode operations (sleep and stop) * [flash](projects/flash/) - Example to show how to write/erase internal flash memory * [i2s-beep](projects/i2s-beep/) - I2S example that plays a couple notes using the internal beep generator from on-board Audio DAC through audio jack. It does not send any I2S data. * [pendsv](projects/pendsv) - Example project on a non-OS use of PendSV exception

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