Embedded c programming and the atmel avr github

#Embedded c programming and the atmel avr github code

To make it simple I implemented the classic blink program that toggles the output pin connected to the on-board LED.

#Embedded c programming and the atmel avr github code

We cam mimic this flow, build our program from C calling the avr-gcc command with the right options and upload it running avrdude with the right options.В The diagram below shows the вЂњtoolchainвЂќ flowВ from writing C code to uploading to Arduino board.ДЇrom C code to Arduino board with avr-gcc This was very useful to understand what the graphical user interface is doing, which turns out is a common workflow for C and C++ builds. The Arduino IDE preferences contains verbosity options that have the effect of printing the commands that are run while the program is compiled and uploaded. I can use these tools to develop a program with pure C code, instead of the Arduino language, and upload that program on the board. In my particular case, since I develop on a Linux machine, Arduino uses the avr-gcc compiler and the avrdude uploading tool. So if you find that Arduino language creates programs that are too big or too slow but you want to squeeze the performance out of your board, or you want a more modular approach, moving to C could be the right choice.ДЇortunately all the tools are there, because the Arduino IDE uses them under the hood. C is adopted worldwideВ to program for small microprocessors because it gives a good trade-off between development effort and program efficiency, and because of its history there are well-optimized libraries, extensive guides and ways to solve problems. In particular, using C to program the Arduino means usually being able to create smaller programs, and with more fine grained control of what happens. I felt the urge to work closer to the hardware, stepping away from the default library and the Java IDE and using the compiler directly from the command line. ItвЂ™s a tool that makes it easy to create programs and hides many details, but that leaves me wanting to look beneath, to understand the details that are normally hidden. I like playing with my Arduino Uno board and its graphical development environment.

This post is part of a series about programming Arduino applications in C.