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74 lines
3.5 KiB
C
74 lines
3.5 KiB
C
/******************************************************************************
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* file include/common.h
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* author YuLiang
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* version 1.0.0
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* date 24-Nov-2021
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* brief This file provides all the headers of the gpio functions.
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******************************************************************************
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* Attention
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*
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* <h2><center>© COPYRIGHT(c) 2021 LandPower</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of LandPower nor the names of its contributors may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************/
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#ifndef _HWGPIO_H_
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#define _HWGPIO_H_
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/* Includes ------------------------------------------------------------------*/
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/* Define --------------------------------------------------------------------*/
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#define GPIO_DIR_IN 1
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#define GPIO_DIR_OUT 2
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#define GPIO_WATCHDONG 915
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/* Exported types ------------------------------------------------------------*/
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/* 记录每个打开的gpio信息 */
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typedef struct
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{
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uint16_t index; /* gpio在数组中的索引 */
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uint16_t gpio; /* gpio号 gpio2-15 = (2 - 1) * 32 + 15 = 47 */
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uint8_t is_export; /* 是否已导出 */
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uint8_t curr_dir; /* 方向当前值 1-in 2-out */
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uint8_t curr_val; /* 电平当前值 针对dir==out时 ,当dir为in时,每次都需要读文件 */
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} gpio_node_t;
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/* Exported macro ------------------------------------------------------------*/
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#define GPIO_WATCHDOG(_v_) gpio_val_set(gpio_watcdog_idx, _v_)
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/* Extern global variables ---------------------------------------------------*/
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extern int32_t gpio_watcdog_idx;
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/* Extern functions ----------------------------------------------------------*/
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extern int32_t gpio_val_set(uint16_t gpio, uint8_t value);
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extern int32_t gpio_val_get(uint16_t gpio, uint8_t *value);
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extern int32_t gpio_dir_set(uint16_t gpio, uint8_t dir);
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extern int32_t gpio_export(uint16_t gpio);
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extern int32_t gpio_init(void);
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#endif
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/************************ (C) COPYRIGHT LandPower ***** END OF FILE ****************/
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