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/*
* File : drv_gpio.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2017-11-24 勤为本 first version
* 2018-05-11 zhuangwei add gpio interrupt ops
*/
#include <rtthread.h>
#include <drivers/pin.h>
#include "ls1c_gpio.h"
#include "ls1c.h"
#include <rthw.h>
#ifdef RT_USING_PIN
void ls1c_pin_mode(struct rt_device *device, rt_base_t pin, rt_base_t mode)
{
unsigned int gpio = pin;
if (PIN_MODE_OUTPUT == mode)
{
gpio_init(gpio, gpio_mode_output);
}
else
{
gpio_init(gpio, gpio_mode_input);
}
return ;
}
void ls1c_pin_write(struct rt_device *device, rt_base_t pin, rt_base_t value)
{
unsigned int gpio = pin;
if (PIN_LOW == value)
{
gpio_set(gpio, gpio_level_low);
}
else
{
gpio_set(gpio, gpio_level_high);
}
return ;
}
int ls1c_pin_read(struct rt_device *device, rt_base_t pin)
{
unsigned int gpio = pin;
int value = PIN_LOW;
if (0 == gpio_get(gpio))
{
value = PIN_LOW;
}
else
{
value = PIN_HIGH;
}
return value;
}
rt_err_t ls1c_pin_attach_irq(struct rt_device *device, rt_int32_t pin,
rt_uint32_t mode, void (*hdr)(void *args), void *args)
{
unsigned int gpio = pin;
char irq_name[10];
gpio_set_irq_type(gpio, mode);
rt_sprintf(irq_name, "PIN_%d", gpio);
rt_hw_interrupt_install(LS1C_GPIO_TO_IRQ(gpio), (rt_isr_handler_t)hdr, args, irq_name);
return RT_EOK;
}
rt_err_t ls1c_pin_dettach_irq(struct rt_device *device, rt_int32_t pin)
{
return RT_EOK;
}
rt_err_t ls1c_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint32_t enabled)
{
unsigned int gpio = pin;
if (enabled)
rt_hw_interrupt_umask(LS1C_GPIO_TO_IRQ(gpio));
else
rt_hw_interrupt_mask(LS1C_GPIO_TO_IRQ(gpio));
return RT_EOK;
}
const static struct rt_pin_ops _ls1c_pin_ops =
{
ls1c_pin_mode,
ls1c_pin_write,
ls1c_pin_read,
ls1c_pin_attach_irq,
ls1c_pin_dettach_irq,
ls1c_pin_irq_enable
};
int hw_pin_init(void)
{
int ret = RT_EOK;
ret = rt_device_pin_register("pin", &_ls1c_pin_ops, RT_NULL);
return ret;
}
INIT_BOARD_EXPORT(hw_pin_init);
#endif /*RT_USING_PIN */
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