Re: [avr-gcc-list] FREEICE project

[Reza Naima]

Sounds very cool. I've already got a JTAG-ICE, but this sounds like a
great tool to have.  I'm not sure what the deal with libusb is, or your
implementation of it, but I just wanted to recommend using the FTDI
USB controller ICs.  They're a brease to use, work on linux/windows/mac
and very cheap.  The drive is already in the linux kernel, so no special
driver is required, and it appears as /dev/ttyUSB0.

Reza


On Wed, Aug 13, 2003 at 07:15:48AM +0200, Armand ten Doesschate sent me this...
> Hi all,
> 
> At this moment I know that there is some fuzz about the freeice
> project but I can explain more :
> the freeice project should implement at least 2 synchronous
> protocols : jtag and bdm.
> 
> The jtag is used - amongst others - by ARM7/9 and AVR. The 
> freeice project will support these 2 types of microcontrollers. 
> The bdm protocol is -like jtag - a synchronous protocol
> and is used -amongst others - by the Coldfire and 683xx series.
> The freeice project will support these microcontrollers too. 
> I worked before with the ARM7, 683xx and Coldfires series
> but I wasnot happy with the solution the way that the parallel
> port had to be used.
> Take into account that these protocols are synchronous means
> that it is somewhat difficult to put in it a system based
> on events (I can send some details if you like).
> I wanted to use a more practical and modern use of communication
> so the freeice project with the gdb_serializer has been born.
> Therefor the gdb_serializer should have a more modular setup.
> 
> And to be clear : the gdb_serializer (what is in a name ?) will
> be placed under GPL.
> 
> 
> Status :
> 
> Hardware
> 
> The hardware (pcb) is almost finished except for very small
> details (the pcb has been made in Eagle). I was contacted by Harald
> Kipp (sorry if I mispelled your name) who is willing to put it
> into production. He is the person behind ethernut amongst others.
> 
> Harald gave me some hints to improve the design. If all is well,
> then we have to do some EMC tests which *is* required if you want to
> sell these boards in Europe.
> At least the schematic diagram and pcb layout has been put on the
> freeice project. 
> 
> I have choosen the hardware such that it shouldnot be a problem
> to get it. Currently I have an experimental board based on this
> design : I can put some pictures of my experimental board on the
> freeice site.
> 
> 
> Software
> 
> I wrote some documents and flowcharts but they are still heavily
> under construction.
> The cooperation with GDB is also defined but this might also change.
> 
> The communication host <-> gdb_serializer is AFAIK ready and is
> based on parallel port and usb :
> usb is working finally right now after having lots of problems.
> The parallel port should be expanded and tested. At this moment the
> parallel port has low priority.
> I made some preliminary host software to talk to this board but
> the software is only based on Linux (it uses libusb). The software
> isnot finished so expect some bugs, frankly I found 2 minor ones
> (but not critically) yesterday dough ...  Updates will follow.
> 
> 
> The beginning of this year we did lots of reversed engineering
> on the AVR jtag and at this moment we think that we have sufficient
> info to implement this protocol into the gdb_serializer. 
> The lowlevel documentation of the jtag protocol is more or less
> ready and currently I am implementing this in in my experimental
> board. So the AVR will be the first one to be implemented.
> 
> Feel free to ask if you are interested.
> 
> 
> Armand
> 
> 
> *******************************************
> * choose GNU/Linux : GNU/Linux is Freedom *
> *******************************************
> 
> ----------------------------------
> 
> Armand ten Doesschate
> Welschapsedijk 141
> 5652 XL Eindhoven
> the Netherlands
> tel : (++31) 40 2571 274
> e-mail : address@hidden
> 
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