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But there is one pitfall: Breakpoints! Breakpoints normally require to replace the instruction at the breakpoint with a special break instruction so that the debugger can detect when the program flow arrives at the breakpoint. However, this is not possible in flash, so you are limited to 2 special hardware breakpoints built into the ARM's on-chip debugger. After installation the programs are called arm-elf-gcc , arm-elf-as and arm-elf-ld , respectively. Linux and Mac OS X users can find installation instructions and pre-built binaries from a microcontroller.
OpenOCD: The open on-chip debugger. I recommend checking out the SVN repository and compiling the sources; see the open facts page for a detailed description on how to do this.
Usual utilities like GNU make , a shell, a text editor, etc. There are plenty of devices but be sure to choose one which is supported by OpenOCD. The cheapest interface cable is probably the so-called "wiggler" attaching to the parallel printer port and also supported by OpenOCD.
You can easily build the wiggler yourself by searching the schematic on the web, however be warned that people have reported instabilities and failures with this device. Germans can buy the ARM microcontroller alone e.
There is a 20MHz crystal and some capacitors as well as pull-up resistors, that's all. Source: minimalistic-hello-world Windows users make a copy instead of symlinking. Makefile Usual file for GNU make.
This aids in debugging. Of course, you can compile the program into a flat binary by simply calling make , but it's good to know the required steps: First, crt.
You need to change this if you use a different JTAG adapter. Connected to localhost. The last lines from the make flash output should hence look like this: cmp main.
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