Some experiments rely on connecting the serial port on the micro:bit directly to the serial port on the Raspberry Pi, and for these to work, it's necessary to enable the serial port on the Pi. If you prefer, you can use an ordinary text editor for programming and invoke make from the command line. The procedure for compiling and linking each program is described by a Makefile, so any programming environment that can invoke make to build a program can easily be used in place of Geany. Similarly, the instructions in this book are written on the assumption that you will be using Geany as a programming environment for editing and compiling the programs, but it is quite easy to use a different environment instead. Although in that case, both machines are designed by ARM, the host runs native ARM code while the target machine runs Thumb code. It doesn't matter if the host machine is based on an Intel processor rather than an ARM processor, because it's not necessary for the host processor actually to run any of the code that is being compiled even on the Raspberry Pi, the compiler we use is a cross-compiler, running on one machine and generating code for another. For other Linux distributions, similar steps will work if performed manually. For machines running Debian or a derivative, the same setup script described below will work just as well as on a Raspberry Pi. However, it is almost as easy to set up any other Linux machine in a similar way, and I did much of the development work for the book on an ordinary Intel-based laptop.
Using a Raspberry Pi is convenient as a way of getting a standardised Linux-based setup with minimal fuss.
Geany raspberry pi install#
They also install a modified version of the Geany programming environment that is able to make sense of the syntax of ARM assembly language. The steps involve installing various software packages needed for programming the micro:bit, such as versions of the GNU C compiler and attendant programs that are capable of generating code for the ARM Cortex-M0 processor on the board. The experiments in this book assume that you are preparing programs for the micro:bit using a Raspberry Pi (version 3 or later), and the instructions given here are aimed at setting up the Pi with the software needed for that.
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