rt-thread/bsp/loongson/ls1cdev/libraries/ls1c_gpio.h

/*
 * Copyright (c) 2006-2018, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2017-09-06     <EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD>       first version
 */


#ifndef __OPENLOONGSON_GPIO_H
#define __OPENLOONGSON_GPIO_H



// <20><>о1c<31><63>gpio<69>ǰ<EFBFBD><C7B0><EFBFBD>0,1,2,3,4...<2E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˳<EFBFBD><CBB3><EFBFBD><EFBFBD><EFBFBD>ŵģ<C5B5>
// <20><><EFBFBD>ڲ<EFBFBD><DAB2><EFBFBD><EFBFBD>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD>ÿ32<33><32>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD>
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD><D4A3><EFBFBD>ÿ<EFBFBD><C3BF><EFBFBD><EFBFBD>32<33><32>gpio<69><6F><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>"port"<22><>ÿ<EFBFBD><C3BF>gpio<69><6F>ÿ<EFBFBD><C3BF><EFBFBD>е<EFBFBD><D0B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>"pin"
// port = gpio / 32
// pin  = gpio % 32
// <20><><EFBFBD><EFBFBD>GPIO50<35><30>port=1,pin=18
#define GPIO_GET_PORT(gpio)                 ((gpio) / 32)
#define GPIO_GET_PIN(gpio)                  ((gpio) % 32)


// gpio<69>Ĺ<EFBFBD><C4B9><EFBFBD>ģʽ--<2D><><EFBFBD>롢<EFBFBD><EBA1A2><EFBFBD><EFBFBD>
typedef enum{
    gpio_mode_output = 0,       // <20><><EFBFBD><EFBFBD>
    gpio_mode_input = 1         // <20><><EFBFBD><EFBFBD>
}gpio_mode_t;


//  gpio<69>ߵ͵<DFB5>ƽֵ
typedef enum{
    gpio_level_low = 0,         // <20>͵<EFBFBD>ƽ
    gpio_level_high = 1         // <20>ߵ<EFBFBD>ƽ
}gpio_level_t;


typedef enum {
    // <20><><EFBFBD><EFBFBD><EFBFBD>ش<EFBFBD><D8B4><EFBFBD>
	IRQ_TYPE_EDGE_RISING	= 0x00000001,
	// <20>½<EFBFBD><C2BD>ش<EFBFBD><D8B4><EFBFBD>
	IRQ_TYPE_EDGE_FALLING	= 0x00000002,
	IRQ_TYPE_EDGE_BOTH	= (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING),
	// <20>ߵ<EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD>
	IRQ_TYPE_LEVEL_HIGH	= 0x00000004,
	// <20>͵<EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD>
	IRQ_TYPE_LEVEL_LOW	= 0x00000008,
	IRQ_TYPE_LEVEL_MASK	= (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH),	
}gpio_irq_type_t;



/*
 * <EFBFBD><EFBFBD>ȡָ<EFBFBD><EFBFBD>gpio<EFBFBD><EFBFBD>CFG<EFBFBD>Ĵ<EFBFBD><EFBFBD><EFBFBD>
 * @gpio gpio<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 * @ret CFG<EFBFBD>Ĵ<EFBFBD><EFBFBD><EFBFBD>
 */
volatile unsigned int *gpio_get_cfg_reg(unsigned int gpio);

/*
 * gpio<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>
 * @gpio gpio<EFBFBD><EFBFBD><EFBFBD>ţ<EFBFBD>ȡֵ<EFBFBD><EFBFBD>Χ[0, 127]
 * @mode gpio<EFBFBD>Ĺ<EFBFBD><EFBFBD><EFBFBD>ģʽ(<EFBFBD><EFBFBD><EFBFBD>롢<EFBFBD><EFBFBD><EFBFBD><EFBFBD>)
 *
 * <EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>gpio50<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 * gpio_init(50, gpio_mode_output);
 */
void gpio_init(unsigned int gpio, gpio_mode_t mode);


/*
 * <EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>gpio<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߵ<EFBFBD>ƽ<EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD>ƽ
 * @gpio gpio<EFBFBD><EFBFBD><EFBFBD>ţ<EFBFBD>ȡֵ<EFBFBD><EFBFBD>Χ[0, 127]
 * @level <EFBFBD><EFBFBD>ƽֵ
 *
 * <EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>gpio50<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD>ƽ
 * gpio_set(50, gpio_level_low);
 */
void gpio_set(unsigned int gpio, gpio_level_t level);



/*
 * <EFBFBD><EFBFBD>ȡָ<EFBFBD><EFBFBD>gpio<EFBFBD><EFBFBD><EFBFBD>ŵ<EFBFBD>ֵ
 * @gpio gpio<EFBFBD><EFBFBD><EFBFBD>ţ<EFBFBD>ȡֵ<EFBFBD><EFBFBD>Χ[0,127]
 *
 * <EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>ȡgpio50<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵ<EFBFBD>ֵ
 * gpio_level_t level;
 * level = gpio_get(50);
 */
unsigned int gpio_get(unsigned int gpio);



/**
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 * @gpio gpio<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 * @type <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>жϵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߵ<EFBFBD>ƽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD>ƽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ش<EFBFBD><EFBFBD><EFBFBD> or <EFBFBD>½<EFBFBD><EFBFBD>ش<EFBFBD><EFBFBD><EFBFBD>
 */
void gpio_set_irq_type(unsigned int gpio, gpio_irq_type_t type);



#endif