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Fix issue with timer timebase on EFR32 #5585

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merged 1 commit into from Nov 30, 2017

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@stevew817
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stevew817 commented Nov 25, 2017

Description

The us_timer code was written based on MHz integer multiple HF clock frequencies, in order to optimize away some long division instructions. EFR32 doesn't conform to that (38.4), and so the timestamp ticks were off by 1%. Enough to trip up some CI tests on TB_SENSE_12 (resolves #5496)

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Fix issue with timer timebase on EFR32
Timer code was written based on integer multiple HF clock frequencies. EFR32 doesn't conform to that (38.4), and so the timestamp ticks were off by 1%. Enough to trip up some CI tests on TB_SENSE_12 (#5496)
@bulislaw

Looks good. @0xc0170

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theotherjimmy commented Nov 27, 2017

/morph build

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mbed-ci commented Nov 27, 2017

Build : SUCCESS

Build number : 606
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/5585/

Triggering tests

/morph test
/morph uvisor-test
/morph export-build

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@0xc0170 0xc0170 merged commit aa176ee into ARMmbed:master Nov 30, 2017

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