Hi all,

Only partly on-topic on codec2 but as I know there are some people doing 
development of codec2 on the STM32F4 board, I hope some of you can help.


For the electronics/homebrew group in our local radio-club, I am 
currently looking into interfacing microcontrollers with the analog 
world and doing more audio / digital signal processing on a microcontroller.

My first project is a AFSK1200 demodulator on a arduino micro 
(atmega32u4@16Mhz) for APRS to learn to use the tools.  I'm using an AVR 
dragon as programmer/debugger and avr-gcc, avr-gdb and avarice with 
eclipse as IDE (debugging with gdb -tui).

After that, I want to look into porting c2gmsk on the S32F4discovery board.


Two questions:
- I want to start using gdb/avarice for remote-debugging the device.
I found some basic command but I am kind-of overwelmed by the list of 
commands you can use if you look at the help of gdb.
(on the other hand, I haven't found something as simple as "how do you 
initialise a reset of the microcontroller?")

Is there somewhere an online tutorial on the possibilities of using gdb 
for remote debugging?

I have seen in the online video of David on codec2-on-a-microcontroller 
you can do some pretty advances thing with it.

E.g., how do you import/export audio wave-files to a microcontroller to 
debug the modem?



- A completely different question:
What is the reason to use bare-metal for codec2 on the STM32F4?

Or, in a more generic form:
What would be the criteria to use or not to use a RTOS on a embedded 
device for a project like (say) codec2?




73
kristoff - ON1ARF

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