Sniffing ubootarm/uart? - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Calculators (and very old HP Computers) (/forum-3.html) +--- Forum: HP Prime (/forum-5.html) +--- Thread: Sniffing ubootarm/uart? (/thread-1803.html)

Sniffing ubootarm/uart? - eried - 07-08-2014 06:12 PM Has anyone sniffed the uart present in the calculator? I hooked a cheap digital analyzer but got only garbage, fastest captured pulse was about below something valid, but the next one was 0.000008625s (8.625 us) = 115942 bauds... no complete frames though :/ (I am just looking around to make sure that device is recoverable for some more eventual debrouxl dummyos tests xD) RE: Sniffing ubootarm/uart? - debrouxl - 07-08-2014 06:34 PM None of the files composing firmware upgrades contains uBoot. My dummy firmware only writes to the LCD controller and a screen buffer, it does not read from or write to Flash memory, so it's hard to imagine how it could damage the calculator RE: Sniffing ubootarm/uart? - eried - 07-08-2014 06:51 PM Sure, I never said that you included anything like uboot. Just wanted to have options in case something fails.