7 Dec
2008
7 Dec
'08
10:44 a.m.
On 6 Dec 2008 at 14:33, Kevin Schoedel wrote:
Can you program and debug either or both of these chips without
propietary hardware or software. In other words, is documentation for the
following availalbe (without signing an NDA, etc )
1) How to send/receive words to the chip (what lines to wiggle and how,
what voltages to apply, etc)
2) The binary instruction set
3) THe debugging commands/responses
Could I, if I wanted, make the programmer and write the software from
scratch?
I don't know PIC, but for the AVR equivalent
the host requirements are an
RS-232 port and the ability to run gdb.
Later PICs have on-chip breakpoint debug communication via ICD (a 3-
wire interface)--and there is the ability to run ICE4000.
There is at least one AVR open-source debug package that operates
through the SPI programming interface--using the same tool to program
and debug. I believe that one can even purchase a USB
"stick" for about $20 for
the TI MSP430 that includes not only the uC, but a USB programming
and debugging interface. It just can't get any easier.
Hmmm.... That's not too useful if you don't have a single machine that
supports USB...
-tony