Though I won t go into the coding details here, it is relatively straightforward to give the monitor some symbolic capabilities. The CLI already has the plumbing necessary to recognize and evaluate script variables. It doesn t take much to extend this mechanism so that it also searches a special file for otherwise undefined symbols.

For example, if I have a file called symtbl in flash memory and it has the following lines in it:

main

0x123456

func1

0x123600

func2

0x123808

varA

0x128000

varB

0x128004

varC

0x12800c

Then I execute a script with the following two lines in it:

echo The address of main() is %mainecho The variable 'varA' is located at %varA

The output

The address of main() is 0x123456

The variable varA is located at 0x128000

MicroMonitor even allows me to change the previous at command from

at ADDR_1 0x1234()==1 BREAK

to

at ADDR_1 %{func_name}()==1 BREAK

because I can replace 0x1234 with the real function name. The only thing I need is the ability to generate, from an application, the symtbl file. This ability to generate the symtbl file is dependent on the tool set (compiler/linker) that you re using, but it should be a simple process regardless.