I want to design a token with at91sam7s256;
it must have only usb port to communication.
I want to use only it's usb port ,for programming my code on it, so I must choose "programming with sam-ba via usb port" and I need to load sam_ba on chip .
thus I must active erase and TST,a0,a,a2 in known order,to load sam_ba and then I can connect the module directly to usb port of computer and program it with sam_ba or sam_prog softwares.
I must do this without any switch on module to active tst and erase,
does anybody have an idea???
thanks a lot for your attention & helps!!!!
Microchip in-system programming solution: SAM-BA
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