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drivers: counter: Add flags to counter_config_info structure

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Allow further extention of counter API by replacing count_up bool in
the structure with u8_t flags where one bit is used for count up
feature.

Change is not breaking API as count up property is read using
counter_is_counting_up() that didn't change.

Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
This commit is contained in:
Krzysztof Chruscinski 2019-05-17 12:10:55 +02:00 • committed by Anas Nashif
commit 89923134e7
10 changed files with 23 additions and 14 deletions
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17
include/counter.h
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@ -29,6 +29,16 @@
extern "C" {
#endif
/**@defgroup COUNTER_FLAGS Counter device capabilities
* @{ */
/**
* @brief Counter count up flag.
*/
#define COUNTER_CONFIG_INFO_COUNT_UP BIT(0)
/**@} */
/** @brief Alarm callback
*
* @param dev Pointer to the device structure for the driver instance.
@ -76,15 +86,14 @@ typedef void (*counter_top_callback_t)(struct device *dev, void *user_data);
* (cleared or reloaded).
* @param freq Frequency of the source clock if synchronous events are
* counted.
* @param count_up Flag indicating direction of the counter. If true
* counter is counting up else counting down.
* @param flags Flags. See @ref COUNTER_FLAGS.
* @param channels Number of channels that can be used for setting alarm,
* see @ref counter_set_alarm.
*/
struct counter_config_info {
u32_t max_top_value;
u32_t freq;
bool count_up;
u8_t flags;
u8_t channels;
};
@ -129,7 +138,7 @@ static inline bool counter_is_counting_up(const struct device *dev)
const struct counter_config_info *config =
(struct counter_config_info *)dev->config->config_info;
return config->count_up;
return config->flags & COUNTER_CONFIG_INFO_COUNT_UP;
}
/**