On 14/10/2013, at 14:10, Gal Rubinstein <[email protected]> wrote:

> hello all,
> I brought a the black a month ago and i really like it, doing a lot of nice 
> things withe the GPIOs....
> 
> my question is:
> is there a way to emulate the functionality of the JTAG (or whatever else) to 
> program the other MCU using the baglebone's 
> expansion pins? 
> like  ATiny which uses the Arduino board as the programming device to program 
> to other MCU's (of the same family) .
> 
> BTW: I know I will need to compile the code to fit the other MCU using the 
> manufacture's supplied headers... had some experience
> programming the STM32…


Today, "JTAG" is used for many things. 

1)  Checking if the PCBs are ok  ( the original intent ). 
2)  Programming the flash ROMs, or EEPROMs or FPGAs. 
3)  Debugging the software, with GDB single stepping (or "breakpointing") the 
target microprocessor. 


So besides "wiggling" or "shaking" in "the right way"  some pins of BeagleBone, 
you need lots of software behind for all that to work. 

So the fast way to have the BB program some microprocessor  is to buy a cheap 
USB-JTAG adapter supported by these two software packages: 

http://openocd.sourceforge.net
http://urjtag.org

   
Best regards

Paulo Ferreira 
 

 


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