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drivers/touch_dev: add a function to get the maximum number of touches

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This commit is contained in:
Gunar Schorcht 2023-08-14 17:48:51 +02:00
parent 09f07262f4
commit a5a08f0d63
1 changed files with 25 additions and 0 deletions
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25
drivers/include/touch_dev.h
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@ -76,6 +76,18 @@ typedef struct {
*/ */
uint16_t (*width)(const touch_dev_t *dev); uint16_t (*width)(const touch_dev_t *dev);
/**
* @brief Get the maximum number of touches the touch device supports
*
* This function pointer can be NULL. In this case, the maximum number of
* touches is assumed to be 1.
*
* @param[in] dev Pointer to the touch device
*
* @return number of touches
*/
uint8_t (*max_numof)(const touch_dev_t *dev);
/** /**
* @brief Get the current touches on the touch device * @brief Get the current touches on the touch device
* *
@ -157,6 +169,19 @@ uint16_t touch_dev_height(const touch_dev_t *dev);
*/ */
uint16_t touch_dev_width(const touch_dev_t *dev); uint16_t touch_dev_width(const touch_dev_t *dev);
/**
* @brief Get the maximum number of touches the touch device supports
*
* @param[in] dev Pointer to the touch device
*
* @return number of touches
*/
static inline uint8_t touch_dev_max_numof(const touch_dev_t *dev)
{
assert(dev);
return (dev->driver->max_numof) ? dev->driver->max_numof(dev) : 1;
}
/** /**
* @brief Get the current touches on the touch device * @brief Get the current touches on the touch device
* *