mirror of
https://github.com/zephyrproject-rtos/zephyr
synced 2025-09-06 10:21:57 +00:00
8328159b09
The automated process used to remove implicit casts resulted in code that exceeded the documented line length limits. Break the assignment into two lines where this happened. Signed-off-by: Peter A. Bigot <pab@pabigot.com>
150 lines
3.5 KiB
C
150 lines
3.5 KiB
C
/*
|
|
* Copyright (c) 2018 Linaro Limited
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#ifndef ZEPHYR_INCLUDE_DRIVERS_LED_H_
|
|
#define ZEPHYR_INCLUDE_DRIVERS_LED_H_
|
|
|
|
/**
|
|
* @file
|
|
* @brief Public LED driver APIs
|
|
*/
|
|
|
|
#include <zephyr/types.h>
|
|
#include <device.h>
|
|
|
|
/**
|
|
* @typedef led_api_blink()
|
|
* @brief Callback API for blinking an LED
|
|
*
|
|
* @see led_blink() for argument descriptions.
|
|
*/
|
|
typedef int (*led_api_blink)(struct device *dev, u32_t led,
|
|
u32_t delay_on, u32_t delay_off);
|
|
|
|
/**
|
|
* @typedef led_api_set_brightness()
|
|
* @brief Callback API for setting brightness of an LED
|
|
*
|
|
* @see led_set_brightness() for argument descriptions.
|
|
*/
|
|
typedef int (*led_api_set_brightness)(struct device *dev, u32_t led,
|
|
u8_t value);
|
|
/**
|
|
* @typedef led_api_on()
|
|
* @brief Callback API for turning on an LED
|
|
*
|
|
* @see led_on() for argument descriptions.
|
|
*/
|
|
typedef int (*led_api_on)(struct device *dev, u32_t led);
|
|
|
|
/**
|
|
* @typedef led_api_off()
|
|
* @brief Callback API for turning off an LED
|
|
*
|
|
* @see led_off() for argument descriptions.
|
|
*/
|
|
typedef int (*led_api_off)(struct device *dev, u32_t led);
|
|
|
|
/**
|
|
* @brief LED driver API
|
|
*
|
|
* This is the mandatory API any LED driver needs to expose.
|
|
*/
|
|
struct led_driver_api {
|
|
led_api_blink blink;
|
|
led_api_set_brightness set_brightness;
|
|
led_api_on on;
|
|
led_api_off off;
|
|
};
|
|
|
|
/**
|
|
* @brief Blink an LED
|
|
*
|
|
* This routine starts blinking an LED forever with the given time period
|
|
*
|
|
* @param dev LED device
|
|
* @param led LED channel/pin
|
|
* @param delay_on Time period (in milliseconds) an LED should be ON
|
|
* @param delay_off Time period (in milliseconds) an LED should be OFF
|
|
* @return 0 on success, negative on error
|
|
*/
|
|
__syscall int led_blink(struct device *dev, u32_t led,
|
|
u32_t delay_on, u32_t delay_off);
|
|
|
|
static inline int z_impl_led_blink(struct device *dev, u32_t led,
|
|
u32_t delay_on, u32_t delay_off)
|
|
{
|
|
const struct led_driver_api *api =
|
|
(const struct led_driver_api *)dev->driver_api;
|
|
|
|
return api->blink(dev, led, delay_on, delay_off);
|
|
}
|
|
|
|
/**
|
|
* @brief Set LED brightness
|
|
*
|
|
* This routine sets the brightness of a LED to the given value.
|
|
* Calling this function after led_blink() won't affect blinking.
|
|
*
|
|
* @param dev LED device
|
|
* @param led LED channel/pin
|
|
* @param value Brightness value to set in percent
|
|
* @return 0 on success, negative on error
|
|
*/
|
|
__syscall int led_set_brightness(struct device *dev, u32_t led,
|
|
u8_t value);
|
|
|
|
static inline int z_impl_led_set_brightness(struct device *dev, u32_t led,
|
|
u8_t value)
|
|
{
|
|
const struct led_driver_api *api =
|
|
(const struct led_driver_api *)dev->driver_api;
|
|
|
|
return api->set_brightness(dev, led, value);
|
|
}
|
|
|
|
/**
|
|
* @brief Turn on an LED
|
|
*
|
|
* This routine turns on an LED
|
|
*
|
|
* @param dev LED device
|
|
* @param led LED channel/pin
|
|
* @return 0 on success, negative on error
|
|
*/
|
|
__syscall int led_on(struct device *dev, u32_t led);
|
|
|
|
static inline int z_impl_led_on(struct device *dev, u32_t led)
|
|
{
|
|
const struct led_driver_api *api =
|
|
(const struct led_driver_api *)dev->driver_api;
|
|
|
|
return api->on(dev, led);
|
|
}
|
|
|
|
/**
|
|
* @brief Turn off an LED
|
|
*
|
|
* This routine turns off an LED
|
|
*
|
|
* @param dev LED device
|
|
* @param led LED channel/pin
|
|
* @return 0 on success, negative on error
|
|
*/
|
|
__syscall int led_off(struct device *dev, u32_t led);
|
|
|
|
static inline int z_impl_led_off(struct device *dev, u32_t led)
|
|
{
|
|
const struct led_driver_api *api =
|
|
(const struct led_driver_api *)dev->driver_api;
|
|
|
|
return api->off(dev, led);
|
|
}
|
|
|
|
#include <syscalls/led.h>
|
|
|
|
#endif /* ZEPHYR_INCLUDE_DRIVERS_LED_H_ */
|