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nrf52840: missing APPROTECT and the HwDisable value for UICR.APPROTECT #17

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TheButlah opened this issue Jan 7, 2023 · 1 comment

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@TheButlah
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TheButlah commented Jan 7, 2023

  • We are missing the HwDisabled value for UICR.APPROTECT.
  • We are missing the entire APPROTECT peripheral.

These are important, because without access to these peripherals, revision 3 chips will enter a protected state that blocks the hardware debugger from accessing them on reset.

It appears this was added to the nrf52840 product specification in April 2021

related issues:
embassy-rs/embassy#1148
probe-rs/probe-rs#1324 (comment)

@TheButlah TheButlah changed the title missing APPROTECT peripheral and the HwDisable value for the UICR.APPROTECT flash register nrf52840: missing APPROTECT peripheral and the HwDisable value for the UICR.APPROTECT flash register Jan 7, 2023
@TheButlah TheButlah changed the title nrf52840: missing APPROTECT peripheral and the HwDisable value for the UICR.APPROTECT flash register nrf52840: missing APPROTECT peripheral and the HwDisable value for UICR.APPROTECT Jan 7, 2023
@TheButlah TheButlah changed the title nrf52840: missing APPROTECT peripheral and the HwDisable value for UICR.APPROTECT nrf52840: missing APPROTECT and the HwDisable value for UICR.APPROTECT Jan 7, 2023
@frankplow
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Both the APPROTECT peripheral and the HwDisabled value for the UICR.APPROTECT register are present in the SVDs distributed with the nRF5 SDK v17.1.0 or nRF MDK v8.57.0.

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