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drivers/gpio: use more clear expression for GPIO direction mask

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Define the mask in terms of the individual non-zero fields to isolate
from future changes to the bit position.

Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
This commit is contained in:
Peter Bigot 2019-10-07 11:57:40 -05:00 • committed by Carles Cufí
commit 30d0818179
1 changed files with 1 additions and 2 deletions
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3
include/drivers/gpio.h
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@ -247,8 +247,7 @@ extern "C" {
*/
/** @cond INTERNAL_HIDDEN */
#define GPIO_DIR_SHIFT 8
#define GPIO_DIR_MASK (0x3U << GPIO_DIR_SHIFT)
#define GPIO_DIR_MASK (GPIO_INPUT | GPIO_OUTPUT)
/** @endcond */
/** Legacy flag indicating pin is configured as input only.