Re: [Openocd-development] Problems with erase (Re: Segfault because ofconfiguration or hardware?)

[Christian J. <chr...@ja...>]

Michael Schwingen wrote:
> Christian Jaeger wrote:
>> The other thing I'm wondering about is the reset lines: the wiggler2 
>> (I hope so) clone that I've built does feed the parallel port pin 6 
>> (data4) through the voltage converter directly to JTRSTn of the ARM, 
>> and only the parallel port pin 2 (data0) is going through a 
>> transistor (open collector, pulled up with 50k) to nSRST; so the 
>> latter is being inverted, while the former is not. Now I've seen in 
>> the diploma thesis from Dominic, in Figure 1.1, that he is actually 
>> inverting *both* nTRST and nSRST. Should I do like him or did that 
>> change?
>>   
> There were some problems with the schematic - IIRC, the schematic in 
> the thesis is for the "oldwiggler" cable.
>
> A schematic that matches the wiggler/wiggler2 definitions is here:
>
> http://www.ccac.rwth-aachen.de/~michaels/index.php/hardware/armjtag

Ok, that's precisely what I've built, except that I've used a 
SN74LVC244A as level-shifter, and I didn't get what he wanted to do with 
the multi-LED's, I simply attached 2 single LED's instead, and I did 
without a (voltage-limiting) Z-diode.

So I should be fine.

Thanks,
Christian.