After using LPRUN mode to display a clock on an LCD, returning to normal mode crashes.

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After using LPRUN mode to display a clock on an LCD, returning to normal mode crashes.

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brianpaterson
Contributor III

During normal mode, it displays. All is well. We go to LPRUN mode to save power and only show a clock on the LCD

During LPRUN, the clock displays but on exiting back to normal mode, the DCU gives an under-run error condition. LCD goes black, system crashes.

System clock during LPRUN is set to 24MHz. Almost all peripherals are disabled.

Any thoughts?

Thanks,

Brian

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brianpaterson
Contributor III
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brianpaterson
Contributor III

Solved it.

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