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project:arm_debugging:start

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project:arm_debugging:start [2019/08/21 16:00] – [Example: Unbricking (restoring) Proxmark bootloader] trimenproject:arm_debugging:start [2019/12/01 23:56] – [JTAG/SWD external clock] SWCLK/TCK can supply crystal oscillator abyssal
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 There is a [[https://brmlab.cz/project/chipwhisperer/start | separate project for Chipwhisperer]] and its usage for side channels. Look there. There is a [[https://brmlab.cz/project/chipwhisperer/start | separate project for Chipwhisperer]] and its usage for side channels. Look there.
 +
 +===== JTAG supplying external clock =====
 +
 +It seems that when you desolder clocks (e.g. from crystal oscillator) the SWD/JTAG clock (SWCLK/TCK) can supply the clock to the chip which can be useful e.g. when you need glitch clock, but still would need operation via SWD/JTAG. Tested on [[https://brmlab.cz/project/chipwhisperer/start#glitching_stm32_external_board_through_ufo-board_interface | STM32F429 discovery board]].
project/arm_debugging/start.txt · Last modified: 2021/06/05 19:29 by abyssal