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61631c39
编写于
1月 18, 2023
作者:
褚
褚仕成
提交者:
mysterywolf
1月 19, 2023
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差异文件
[bsp/bl808] add: drv_i2c
上级
65adce29
变更
6
隐藏空白更改
内联
并排
Showing
6 changed file
with
256 addition
and
3 deletion
+256
-3
bsp/bl808/README.md
bsp/bl808/README.md
+1
-0
bsp/bl808/m0/drivers/Kconfig
bsp/bl808/m0/drivers/Kconfig
+17
-0
bsp/bl808/m0/drivers/SConscript
bsp/bl808/m0/drivers/SConscript
+3
-3
bsp/bl808/m0/drivers/board.c
bsp/bl808/m0/drivers/board.c
+6
-0
bsp/bl808/m0/drivers/drv_i2c.c
bsp/bl808/m0/drivers/drv_i2c.c
+186
-0
bsp/bl808/m0/drivers/drv_i2c.h
bsp/bl808/m0/drivers/drv_i2c.h
+43
-0
未找到文件。
bsp/bl808/README.md
浏览文件 @
61631c39
...
...
@@ -100,6 +100,7 @@ Windows下推荐使用[env工具][1],在console下进入bsp/bl808目录中,
| ------ | ---- | :------: |
| UART | 支持 | UART0,用于shell,默认波特率2000000 |
| GPIO | 支持 | |
| I2C | 支持 | 软件 I2C1,默认 SCL——20,SDA——21 |
## 5. 联系人信息
...
...
bsp/bl808/m0/drivers/Kconfig
浏览文件 @
61631c39
...
...
@@ -18,6 +18,23 @@ menu "On-chip Peripheral Drivers"
select RT_USING_PIN
default y
menuconfig BSP_USING_I2C1
bool "Enable I2C1 BUS (software simulation)"
default n
select RT_USING_I2C
select RT_USING_I2C_BITOPS
select RT_USING_PIN
if BSP_USING_I2C1
config BSP_I2C1_SCL_PIN
int "i2c1 scl pin number"
range 0 33
default 20
config BSP_I2C1_SDA_PIN
int "I2C1 sda pin number"
range 0 33
default 21
endif
menuconfig BSP_USING_UART
bool "Enable UART"
default y
...
...
bsp/bl808/m0/drivers/SConscript
浏览文件 @
61631c39
...
...
@@ -18,6 +18,9 @@ if GetDepend(['RT_USING_SERIAL']):
if
GetDepend
(
'RT_USING_PIN'
):
src
+=
[
'drv_gpio.c'
]
if
GetDepend
(
'RT_USING_I2C'
):
src
+=
[
'drv_i2c.c'
]
# if GetDepend('BSP_USING_LCD'):
# src += ['drv_lcd.c']
# src += ['drv_mpylcd.c']
...
...
@@ -28,9 +31,6 @@ if GetDepend('RT_USING_PIN'):
# if GetDepend('RT_USING_CPUTIME'):
# src += ['drv_cputime.c']
# if GetDepend('RT_USING_I2C'):
# src += ['drv_i2c.c']
# if GetDepend('RT_USING_SPI'):
# src += ['drv_spi.c']
...
...
bsp/bl808/m0/drivers/board.c
浏览文件 @
61631c39
...
...
@@ -6,6 +6,7 @@
* Change Logs:
* Date Author Notes
* 2022/12/25 flyingcys first version
* 2023/01/17 chushicheng add pin and i2c
*/
#include <rthw.h>
#include <rtthread.h>
...
...
@@ -81,6 +82,11 @@ void rt_hw_board_init(void)
rt_hw_pin_init
();
#endif
/* I2C driver initialization is open by default */
#ifdef RT_USING_I2C
rt_hw_i2c_init
();
#endif
/* UART driver initialization is open by default */
#ifdef RT_USING_SERIAL
rt_hw_uart_init
();
...
...
bsp/bl808/m0/drivers/drv_i2c.c
0 → 100644
浏览文件 @
61631c39
/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2023/01/17 chushicheng first version
*/
#include <board.h>
#include "drv_i2c.h"
#include "bl808_common.h"
#ifdef RT_USING_I2C
#define DBG_TAG "drv.i2c"
#define DBG_LVL DBG_INFO
#include <rtdbg.h>
#if !defined(BSP_USING_I2C1)
#error "Please define at least one BSP_USING_I2Cx"
/* this driver can be disabled at menuconfig -> RT-Thread Components -> Device Drivers */
#endif
static
const
struct
bl808_soft_i2c_config
soft_i2c_config
[]
=
{
#ifdef BSP_USING_I2C1
I2C1_BUS_CONFIG
,
#endif
};
static
struct
bl808_i2c
i2c_obj
[
sizeof
(
soft_i2c_config
)
/
sizeof
(
soft_i2c_config
[
0
])];
/**
* This function initializes the i2c pin.
*
* @param bl808 i2c dirver class.
*/
static
void
bl808_i2c_gpio_init
(
struct
bl808_i2c
*
i2c
)
{
struct
bl808_soft_i2c_config
*
cfg
=
(
struct
bl808_soft_i2c_config
*
)
i2c
->
ops
.
data
;
rt_pin_mode
(
cfg
->
scl
,
PIN_MODE_OUTPUT_OD
);
rt_pin_mode
(
cfg
->
sda
,
PIN_MODE_OUTPUT_OD
);
rt_pin_write
(
cfg
->
scl
,
PIN_HIGH
);
rt_pin_write
(
cfg
->
sda
,
PIN_HIGH
);
}
/**
* This function sets the sda pin.
*
* @param bl808 config class.
* @param The sda pin state.
*/
static
void
bl808_set_sda
(
void
*
data
,
rt_int32_t
state
)
{
struct
bl808_soft_i2c_config
*
cfg
=
(
struct
bl808_soft_i2c_config
*
)
data
;
if
(
state
)
{
rt_pin_write
(
cfg
->
sda
,
PIN_HIGH
);
}
else
{
rt_pin_write
(
cfg
->
sda
,
PIN_LOW
);
}
}
/**
* This function sets the scl pin.
*
* @param bl808 config class.
* @param The scl pin state.
*/
static
void
bl808_set_scl
(
void
*
data
,
rt_int32_t
state
)
{
struct
bl808_soft_i2c_config
*
cfg
=
(
struct
bl808_soft_i2c_config
*
)
data
;
if
(
state
)
{
rt_pin_write
(
cfg
->
scl
,
PIN_HIGH
);
}
else
{
rt_pin_write
(
cfg
->
scl
,
PIN_LOW
);
}
}
/**
* This function gets the sda pin state.
*
* @param The sda pin state.
*/
static
rt_int32_t
bl808_get_sda
(
void
*
data
)
{
struct
bl808_soft_i2c_config
*
cfg
=
(
struct
bl808_soft_i2c_config
*
)
data
;
return
rt_pin_read
(
cfg
->
sda
);
}
/**
* This function gets the scl pin state.
*
* @param The scl pin state.
*/
static
rt_int32_t
bl808_get_scl
(
void
*
data
)
{
struct
bl808_soft_i2c_config
*
cfg
=
(
struct
bl808_soft_i2c_config
*
)
data
;
return
rt_pin_read
(
cfg
->
scl
);
}
/**
* The time delay function.
*
* @param microseconds.
*/
static
void
bl808_udelay
(
rt_uint32_t
us
)
{
arch_delay_us
(
us
);
}
static
const
struct
rt_i2c_bit_ops
bl808_bit_ops_default
=
{
.
data
=
RT_NULL
,
.
set_sda
=
bl808_set_sda
,
.
set_scl
=
bl808_set_scl
,
.
get_sda
=
bl808_get_sda
,
.
get_scl
=
bl808_get_scl
,
.
udelay
=
bl808_udelay
,
.
delay_us
=
1
,
.
timeout
=
100
};
/**
* if i2c is locked, this function will unlock it
*
* @param bl808 config class
*
* @return RT_EOK indicates successful unlock.
*/
static
rt_err_t
bl808_i2c_bus_unlock
(
const
struct
bl808_soft_i2c_config
*
cfg
)
{
rt_int32_t
i
=
0
;
if
(
PIN_LOW
==
rt_pin_read
(
cfg
->
sda
))
{
while
(
i
++
<
9
)
{
rt_pin_write
(
cfg
->
scl
,
PIN_HIGH
);
bl808_udelay
(
100
);
rt_pin_write
(
cfg
->
scl
,
PIN_LOW
);
bl808_udelay
(
100
);
}
}
if
(
PIN_LOW
==
rt_pin_read
(
cfg
->
sda
))
{
return
-
RT_ERROR
;
}
return
RT_EOK
;
}
/* I2C initialization function */
int
rt_hw_i2c_init
(
void
)
{
rt_err_t
result
;
for
(
rt_size_t
i
=
0
;
i
<
sizeof
(
i2c_obj
)
/
sizeof
(
struct
bl808_i2c
);
i
++
)
{
i2c_obj
[
i
].
ops
=
bl808_bit_ops_default
;
i2c_obj
[
i
].
ops
.
data
=
(
void
*
)
&
soft_i2c_config
[
i
];
i2c_obj
[
i
].
i2c2_bus
.
priv
=
&
i2c_obj
[
i
].
ops
;
bl808_i2c_gpio_init
(
&
i2c_obj
[
i
]);
result
=
rt_i2c_bit_add_bus
(
&
i2c_obj
[
i
].
i2c2_bus
,
soft_i2c_config
[
i
].
bus_name
);
RT_ASSERT
(
result
==
RT_EOK
);
bl808_i2c_bus_unlock
(
&
soft_i2c_config
[
i
]);
LOG_D
(
"software simulation %s init done, pin scl: %d, pin sda %d"
,
soft_i2c_config
[
i
].
bus_name
,
soft_i2c_config
[
i
].
scl
,
soft_i2c_config
[
i
].
sda
);
}
return
RT_EOK
;
}
INIT_BOARD_EXPORT
(
rt_hw_i2c_init
);
#endif
/* RT_USING_I2C */
bsp/bl808/m0/drivers/drv_i2c.h
0 → 100644
浏览文件 @
61631c39
/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2023/01/17 chushicheng first version
*/
#ifndef __DRV_I2C__
#define __DRV_I2C__
#include <rtthread.h>
#include <rthw.h>
#include <rtdevice.h>
/* bl808 config class */
struct
bl808_soft_i2c_config
{
rt_uint8_t
scl
;
rt_uint8_t
sda
;
const
char
*
bus_name
;
};
/* bl808 i2c dirver class */
struct
bl808_i2c
{
struct
rt_i2c_bit_ops
ops
;
struct
rt_i2c_bus_device
i2c2_bus
;
};
#ifdef BSP_USING_I2C1
#define I2C1_BUS_CONFIG \
{ \
.scl = BSP_I2C1_SCL_PIN, \
.sda = BSP_I2C1_SDA_PIN, \
.bus_name = "i2c1", \
}
#endif
int
rt_hw_i2c_init
(
void
);
#endif
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