Why it have to be [color=rgb(40,40,40);font-family:helvetica, arial, sans-serif;]rs232 cable and not TTL UART in order to [/color][color=rgb(40,40,40);font-family:helvetica, arial, sans-serif;]flashing the tinybooter using SAM-BA? I currently have a TTL cable and doesn't work at all, sam-ba gives me error of no "[/color][color=rgb(40,40,40);font-family:helvetica, arial, sans-serif;]no valid processor ID found[/color][color=rgb(40,40,40);font-family:helvetica, arial, sans-serif;]". I have a mini and also a custom pcb using at91sam7x512 AU chip and for the sake of me I cannot get sam-ba to flash anything and I guess because I'm using TTL cable and not RS232, can anyone confirme this and shed some technical light why rs232 is capable of doing so and not TTL cable? AT the end both are converted from usb to serial not?[/color]
[color=rgb(40,40,40);font-family:helvetica, arial, sans-serif;]Thanks[/color]