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| author | px4dev <px4@purgatory.org> | 2012-08-25 13:14:01 -0700 |
|---|---|---|
| committer | px4dev <px4@purgatory.org> | 2012-08-25 13:15:23 -0700 |
| commit | e5e2d7216c215acd8d59d76abfd55de5ea625019 (patch) | |
| tree | c6c008b96bb398c8fd90b83c23f607790f00cf81 /apps/drivers/device/spi.h | |
| parent | 380d1364830fb495021d9d07e6280c18386b8668 (diff) | |
| download | px4-firmware-e5e2d7216c215acd8d59d76abfd55de5ea625019.tar.gz px4-firmware-e5e2d7216c215acd8d59d76abfd55de5ea625019.tar.bz2 px4-firmware-e5e2d7216c215acd8d59d76abfd55de5ea625019.zip | |
Make it non-fatal to perform SPI transfers from interrupt context.
Diffstat (limited to 'apps/drivers/device/spi.h')
| -rw-r--r-- | apps/drivers/device/spi.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/apps/drivers/device/spi.h b/apps/drivers/device/spi.h index ef382b03c..b2a111562 100644 --- a/apps/drivers/device/spi.h +++ b/apps/drivers/device/spi.h @@ -81,6 +81,12 @@ protected: /** * Perform a SPI transfer. * + * If called from interrupt context, this interface does not lock + * the bus and may interfere with non-interrupt-context callers. + * + * Clients in a mixed interrupt/non-interrupt configuration must + * ensure appropriate interlocking. + * * At least one of send or recv must be non-null. * * @param send Bytes to send to the device, or nullptr if |