bugfix for duplicate symbol
Fork of nRF51822 by
Diff: nordic-sdk/components/libraries/gpiote/app_gpiote.h
- Revision:
- 177:7a1917171a20
- Parent:
- 111:be2a122ed2f7
--- a/nordic-sdk/components/libraries/gpiote/app_gpiote.h Wed Apr 15 09:24:27 2015 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,219 +0,0 @@ -/* Copyright (c) 2012 Nordic Semiconductor. All Rights Reserved. - * - * The information contained herein is property of Nordic Semiconductor ASA. - * Terms and conditions of usage are described in detail in NORDIC - * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT. - * - * Licensees are granted free, non-transferable use of the information. NO - * WARRANTY of ANY KIND is provided. This heading must NOT be removed from - * the file. - * - */ - -/** @file - * - * @defgroup app_gpiote GPIOTE Handler - * @{ - * @ingroup app_common - * - * @brief GPIOTE handler module. - * - * @details The GPIOTE handler allows several modules ("users") to share the GPIOTE interrupt, - * each user defining a set of pins able to generate events to the user. - * When a GPIOTE interrupt occurs, the GPIOTE interrupt handler will call the event handler - * of each user for which at least one of the pins generated an event. - * - * The GPIOTE users are responsible for configuring all their corresponding pins, except - * the SENSE field, which should be initialized to GPIO_PIN_CNF_SENSE_Disabled. - * The SENSE field will be updated by the GPIOTE module when it is enabled or disabled, - * and also while it is enabled. - * - * The module specifies on which pins events should be generated if the pin(s) goes - * from low->high or high->low or both directions. - * - * @note Even if the application is using the @ref app_scheduler, the GPIOTE event handlers will - * be called directly from the GPIOTE interrupt handler. - * - * @warning If multiple users registers for the same pins the behavior for those pins are undefined. - */ - -#ifndef APP_GPIOTE_H__ -#define APP_GPIOTE_H__ - -#include <stdint.h> -#include <stdbool.h> -#include "nrf.h" -#include "app_error.h" -#include "app_util.h" - -#define GPIOTE_USER_NODE_SIZE 20 /**< Size of app_gpiote.gpiote_user_t (only for use inside APP_GPIOTE_BUF_SIZE()). */ -#define NO_OF_PINS 32 /**< Number of GPIO pins on the nRF51 chip. */ - -/**@brief Compute number of bytes required to hold the GPIOTE data structures. - * - * @param[in] MAX_USERS Maximum number of GPIOTE users. - * - * @return Required buffer size (in bytes). - */ -#define APP_GPIOTE_BUF_SIZE(MAX_USERS) ((MAX_USERS) * GPIOTE_USER_NODE_SIZE) - -typedef uint8_t app_gpiote_user_id_t; - -/**@brief GPIOTE event handler type. */ -typedef void (*app_gpiote_event_handler_t)(uint32_t event_pins_low_to_high, - uint32_t event_pins_high_to_low); - -/**@brief GPIOTE input event handler type. */ -typedef void (*app_gpiote_input_event_handler_t)(void); - -/**@brief Macro for initializing the GPIOTE module. - * - * @details It will handle dimensioning and allocation of the memory buffer required by the module, - * making sure that the buffer is correctly aligned. - * - * @param[in] MAX_USERS Maximum number of GPIOTE users. - * - * @note Since this macro allocates a buffer, it must only be called once (it is OK to call it - * several times as long as it is from the same location, e.g. to do a reinitialization). - */ -/*lint -emacro(506, APP_GPIOTE_INIT) */ /* Suppress "Constant value Boolean */ -#define APP_GPIOTE_INIT(MAX_USERS) \ - do \ - { \ - static uint32_t app_gpiote_buf[CEIL_DIV(APP_GPIOTE_BUF_SIZE(MAX_USERS), sizeof(uint32_t))];\ - uint32_t ERR_CODE = app_gpiote_init((MAX_USERS), app_gpiote_buf); \ - APP_ERROR_CHECK(ERR_CODE); \ - } while (0) - -/**@brief Function for initializing the GPIOTE module. - * - * @note Normally initialization should be done using the APP_GPIOTE_INIT() macro, as that will - * allocate the buffer needed by the GPIOTE module (including aligning the buffer correctly). - * - * @param[in] max_users Maximum number of GPIOTE users. - * @param[in] p_buffer Pointer to memory buffer for internal use in the app_gpiote - * module. The size of the buffer can be computed using the - * APP_GPIOTE_BUF_SIZE() macro. The buffer must be aligned to - * a 4 byte boundary. - * - * @retval NRF_SUCCESS Successful initialization. - * @retval NRF_ERROR_INVALID_PARAM Invalid parameter (buffer not aligned to a 4 byte - * boundary). - */ -uint32_t app_gpiote_init(uint8_t max_users, void * p_buffer); - -/**@brief Function for registering a GPIOTE user. - * - * @param[out] p_user_id Id for the new GPIOTE user. - * @param[in] pins_low_to_high_mask Mask defining which pins will generate events to this user - * when state is changed from low->high. - * @param[in] pins_high_to_low_mask Mask defining which pins will generate events to this user - * when state is changed from high->low. - * @param[in] event_handler Pointer to function to be executed when an event occurs. - * - * @retval NRF_SUCCESS Successful initialization. - * @retval NRF_ERROR_INVALID_PARAM Invalid parameter (buffer not aligned to a 4 byte boundary). - * @retval NRF_ERROR_INALID_STATE If @ref app_gpiote_init has not been called on the GPIOTE - * module. - * @retval NRF_ERROR_NO_MEM Returned if the application tries to register more users - * than defined when the GPIOTE module was initialized in - * @ref app_gpiote_init. - */ -uint32_t app_gpiote_user_register(app_gpiote_user_id_t * p_user_id, - uint32_t pins_low_to_high_mask, - uint32_t pins_high_to_low_mask, - app_gpiote_event_handler_t event_handler); - -/**@brief Function for informing the GPIOTE module that the specified user wants to use the GPIOTE module. - * - * @param[in] user_id Id of user to enable. - * - * @retval NRF_SUCCESS On success. - * @retval NRF_ERROR_INVALID_PARAM Invalid user_id provided, No a valid user. - * @retval NRF_ERROR_INALID_STATE If @ref app_gpiote_init has not been called on the GPIOTE - * module. - */ -uint32_t app_gpiote_user_enable(app_gpiote_user_id_t user_id); - -/**@brief Function for informing the GPIOTE module that the specified user is done using the GPIOTE module. - * - * @param[in] user_id Id of user to enable. - * - * @return NRF_SUCCESS On success. - * @retval NRF_ERROR_INVALID_PARAM Invalid user_id provided, No a valid user. - * @retval NRF_ERROR_INALID_STATE If @ref app_gpiote_init has not been called on the GPIOTE - * module. - */ -uint32_t app_gpiote_user_disable(app_gpiote_user_id_t user_id); - -/**@brief Function for getting the state of the pins which are registered for the specified user. - * - * @param[in] user_id Id of user to check. - * @param[out] p_pins Bit mask corresponding to the pins configured to generate events to - * the specified user. All bits corresponding to pins in the state - * 'high' will have value '1', all others will have value '0'. - * - * @return NRF_SUCCESS On success. - * @retval NRF_ERROR_INVALID_PARAM Invalid user_id provided, No a valid user. - * @retval NRF_ERROR_INALID_STATE If @ref app_gpiote_init has not been called on the GPIOTE - * module. - */ -uint32_t app_gpiote_pins_state_get(app_gpiote_user_id_t user_id, uint32_t * p_pins); - -/**@brief Function for registering event handlers for GPIOTE IN events. - * - * @param[in] channel GPIOTE channel [0..3]. - * @param[in] pin Pins associated with GPIOTE channel. Changes on following pins will generate events. - * @param[in] polarity Specify operation on input that shall trigger IN event. - * @param[in] event_handler Event handler invoked on the IN event in the GPIOTE interrupt. - * - * @return NRF_SUCCESS On success. - * @retval NRF_ERROR_INVALID_PARAM Invalid channel or pin number. - * @retval NRF_ERROR_NOT_SUPPORTED Driver doesn't support IN events. - */ -uint32_t app_gpiote_input_event_handler_register(const uint8_t channel, - const uint32_t pin, - const uint32_t polarity, - app_gpiote_input_event_handler_t event_handler); - -/**@brief Function for unregistering event handlers for GPIOTE IN events. - * - * @return NRF_SUCCESS On success. - * @retval NRF_ERROR_NOT_SUPPORTED Driver doesn't support IN events. - */ -uint32_t app_gpiote_input_event_handler_unregister(const uint8_t channel); - -/**@brief Function for registering event handler invoked at the end of a GPIOTE interrupt. - * - * @param[in] event_handler Event handler invoked at the end of the GPIOTE interrupt. - * - * @return NRF_SUCCESS On success. - * @retval NRF_ERROR_NOT_SUPPORTED Driver doesn't support IN events. - */ -uint32_t app_gpiote_end_irq_event_handler_register(app_gpiote_input_event_handler_t event_handler); - -/**@brief Function for unregistering event handler invoked at the end of a GPIOTE interrupt. - * - * @return NRF_SUCCESS On success. - * @retval NRF_ERROR_NOT_SUPPORTED Driver doesn't support IN events. - */ -uint32_t app_gpiote_end_irq_event_handler_unregister(void); - -/**@brief Function for enabling interrupts in the GPIOTE driver. - * - * @return NRF_SUCCESS On success. - * @retval NRF_ERROR_NOT_SUPPORTED Driver doesn't support. - */ -uint32_t app_gpiote_enable_interrupts(void); - -/**@brief Function for disabling interrupts in the GPIOTE driver. - * - * @return NRF_SUCCESS On success. - * @retval NRF_ERROR_NOT_SUPPORTED Driver doesn't support. - */ -uint32_t app_gpiote_disable_interrupts(void); - - -#endif // APP_GPIOTE_H__ - -/** @} */ \ No newline at end of file