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https://issues.apache.org/jira/browse/MYNEWT-390?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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William San Filippo resolved MYNEWT-390.
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Resolution: Fixed
Issue has been resolved.
> NRF HAL GPIO was not returning 1 for hal_gpio_read when pin input was high
> --------------------------------------------------------------------------
>
> Key: MYNEWT-390
> URL: https://issues.apache.org/jira/browse/MYNEWT-390
> Project: Mynewt
> Issue Type: Bug
> Affects Versions: v0_9_0
> Reporter: William San Filippo
> Assignee: William San Filippo
> Fix For: v1_0_0_beta1
>
>
> The HAL gpio API to read an input pin should return 0 if the pin is low and 1
> if the pin is high. The nrf (both 51 and 52) was returning a non-zero value
> if the pin was high but not 1 unless pin 0 was being read. It was returning 1
> left-shifted by the pin number. This API should return only 0 or 1 (not zero
> and non-zero).
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