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