Changes between Version 138 and Version 139 of gsc


Ignore:
Timestamp:
11/05/2026 11:32:57 PM (28 hours ago)
Author:
Ryan Erb
Comment:

adjust tamper terms

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  • gsc

    v138 v139  
    10251025Some boards have a ''Tamper Detect'' circuit implemented either as a physical pushbutton on the board and/or a header that can have an external switch wired to it. The circuit implemented is a ''normally open'' switch to board ground (GND).
    10261026
    1027 For these boards you can enable the GSC's ''Tamper Detect'' feature by setting [#gsc_ctrl_0 TAMPER_DETECT (R0.5)] and the accompanying interrupt enable register bit [#gsc_interrupt_enable IRQ_TAMPER_DETECT (R11.5)]. Once these bits are set any tamper event produced by a switch closing and the signal conducting to board ground will do the following:
     1027For these boards you can enable the GSC's ''Tamper Detect'' feature by setting [#gsc_ctrl_0 TAMPER_DETECT (R0.5)] and the accompanying interrupt enable register bit [#gsc_interrupt_enable IRQ_TAMPER_DETECT (R11.5)]. Once these bits are set any tamper event produced by a switch opening and the signal not conducting to board ground will do the following:
    10281028 1. Set [#gsc_interrupt_status IRQ_TAMPER_DETECT (R10.5)] interrupt status bit
    10291029 2. Erase the '''Secure Key''' EEPROM section