Voltage Testing of XO-1.75: Difference between revisions
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It should boot normally. |
It should boot normally. |
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To test booting at 1.4V (as modern CForth sets this GPIO to 1 -- 1.345V -- immediately upon boot): |
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ok b gpio-clr |
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ok ofw |
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[[Category:Hardware]] |
[[Category:Hardware]] |
Latest revision as of 04:11, 16 August 2011
This procedure is for verifying firmware startup at different core voltages.
It assumes that the board is hardware-configured to start at a core voltage of 1.4V.
Test booting at 1.4V by powering on the board in the normal way.
To test booting at 1.345V :
- Attach a serial port to the XO-1.75.
- Get into CForth by holding down the rotate key and powering on.
ok b gpio-set ok ofw
It should boot normally.
To test booting at 1.4V (as modern CForth sets this GPIO to 1 -- 1.345V -- immediately upon boot):
ok b gpio-clr ok ofw