If you install MDK or the examples into different folders, you will have to adjust for the folder location differences.We recommend you use the default folders for this tutorial.Install MDK into the default folder C:\Keil_v5.Download MDK Core from the Keil website.Install Keil according to the following steps: It is easy to use and learn, yet powerful enough for the most demanding embedded applications. Keil is specifically designed for microcontroller applications. After generation of initialization code, the developer can easily build upon desired functionality.ĪRM supported Keil MDK: It is a complete software development environment for many of ARM’s processor designs. This platform includes the STM32Cube HAL (Hardware Abstraction Layer- it is used by software to interface with hardware) and a consistent set of middleware components (RTOS, USB, TCP/IP and graphics). STM32CubeMX: It is a graphical tool that allows code generation for STM32 microcontrollers. My board, the STM32F7 Discovery has an on-board “User LED” which will be used for the demonstration. We will use first use STM32CubeMX platform to generate code for the program and then use Keil to compile and upload it to the board. However, this will vary from board to board. In general, you may need to use a resistor of at least 500 Ohms in series with the LED when doing such experiments. My recommendation is to always read the board schematics and programming manual before doing such experiments. A typical LED draws a current of about 20 mA, which can sometimes be too much for a board to handle and you may end up with a fried, useless board. Current is the reason for power dissipation(Power dissipated = I*I*R), which is to be minimized when it comes to embedded systems. This is done because every electronic component is sensitive to changes in V and A and can handle only a certain amount of current before it blows. It is highly recommended to use resistors to draw(take current from board) or drain(give/send current to board) current when using a microcontroller. The LED may be onboard (as is available commonly in almost all development boards, for example, Arduino, Beaglebone Black etc.) or an external one, driven using the pin outs(GPIOs) and resistors. In the world of electronics, the traditional introduction to any programming, “Hello world!” is displayed in the form of a blinking LED. This post aims to describe how to write a simple “Hello world!” program for the STM32F7 Discovery board using the STM32CubeMX and ARM’s Keil MDK(Microcontroller Development Kit).
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