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体验新版 GitCode,发现更多精彩内容 >>
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711ad21e
编写于
11月 22, 2017
作者:
勤
勤为本
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电子邮件补丁
差异文件
龙芯1c平台的rtt统一标准的I2C接口
上级
e466357c
变更
3
隐藏空白更改
内联
并排
Showing
3 changed file
with
166 addition
and
0 deletion
+166
-0
bsp/ls1cdev/drivers/drv_i2c.c
bsp/ls1cdev/drivers/drv_i2c.c
+129
-0
bsp/ls1cdev/drivers/drv_i2c.h
bsp/ls1cdev/drivers/drv_i2c.h
+34
-0
bsp/ls1cdev/rtconfig.h
bsp/ls1cdev/rtconfig.h
+3
-0
未找到文件。
bsp/ls1cdev/drivers/drv_i2c.c
0 → 100644
浏览文件 @
711ad21e
/*
* File : drv_i2c.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
* 2017-11-14 勤为本 first version
*/
#include <rtthread.h>
#include <drivers/i2c.h>
#include <drivers/i2c-bit-ops.h>
#include "drv_i2c.h"
#include "../libraries/ls1c_gpio.h"
#include "../libraries/ls1c_delay.h"
#define LS1C_I2C_SCL (57) // gpio57
#define LS1C_I2C_SDA (56) // gpio56
#define LS1C_SET_GPIO_MODE
static
void
ls1c_i2c_gpio_init
(
void
)
{
gpio_init
(
LS1C_I2C_SCL
,
gpio_mode_output
);
gpio_set
(
LS1C_I2C_SCL
,
gpio_level_high
);
gpio_init
(
LS1C_I2C_SDA
,
gpio_mode_output
);
gpio_set
(
LS1C_I2C_SDA
,
gpio_level_high
);
return
;
}
static
void
ls1c_udelay
(
rt_uint32_t
us
)
{
delay_us
((
int
)
us
);
}
static
void
ls1c_set_sda
(
void
*
data
,
rt_int32_t
state
)
{
#ifdef LS1C_SET_GPIO_MODE
gpio_init
(
LS1C_I2C_SDA
,
gpio_mode_output
);
ls1c_udelay
(
5
);
#endif
gpio_set
(
LS1C_I2C_SDA
,
state
);
return
;
}
static
void
ls1c_set_scl
(
void
*
data
,
rt_int32_t
state
)
{
#ifdef LS1C_SET_GPIO_MODE
gpio_init
(
LS1C_I2C_SCL
,
gpio_mode_output
);
ls1c_udelay
(
5
);
#endif
gpio_set
(
LS1C_I2C_SCL
,
state
);
return
;
}
static
rt_int32_t
ls1c_get_sda
(
void
*
data
)
{
#ifdef LS1C_SET_GPIO_MODE
gpio_init
(
LS1C_I2C_SDA
,
gpio_mode_input
);
ls1c_udelay
(
5
);
#endif
return
gpio_get
(
LS1C_I2C_SDA
);
}
static
rt_int32_t
ls1c_get_scl
(
void
*
data
)
{
#ifdef LS1C_SET_GPIO_MODE
gpio_init
(
LS1C_I2C_SCL
,
gpio_mode_input
);
ls1c_udelay
(
5
);
#endif
return
gpio_get
(
LS1C_I2C_SCL
);
}
static
const
struct
rt_i2c_bit_ops
bit_ops
=
{
.
data
=
RT_NULL
,
.
set_sda
=
ls1c_set_sda
,
.
set_scl
=
ls1c_set_scl
,
.
get_sda
=
ls1c_get_sda
,
.
get_scl
=
ls1c_get_scl
,
.
udelay
=
ls1c_udelay
,
.
delay_us
=
20
,
// 此值为周期(us)
.
timeout
=
10
,
// 单位为tick
};
int
ls1c_i2c_init
(
void
)
{
static
struct
rt_i2c_bus_device
bus
=
{
0
};
bus
.
priv
=
(
void
*
)
&
bit_ops
;
ls1c_i2c_gpio_init
();
rt_i2c_bit_add_bus
(
&
bus
,
"i2c2"
);
return
RT_EOK
;
}
bsp/ls1cdev/drivers/drv_i2c.h
0 → 100644
浏览文件 @
711ad21e
/*
* File : drv_i2c.h
* 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
* 2017-11-14 ÇÚΪ±¾ first version
*/
#ifndef LS1C_DRV_I2C_H
#define LS1C_DRV_I2C_H
int
ls1c_i2c_init
(
void
);
#endif
bsp/ls1cdev/rtconfig.h
浏览文件 @
711ad21e
...
...
@@ -231,6 +231,9 @@
#define RT_USING_SPI0
#define RT_USING_SPI1
#define RT_USING_I2C
#define RT_USING_I2C_BITOPS
// </RDTConfigurator>
...
...
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