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[bsp][pico]: add pwm driver (#8178) 

Co-authored-by: Meco Man <920369182@qq.com>
This commit is contained in:
Shicheng Chu 2023-10-30 01:17:25 +08:00 committed by GitHub
parent de779b1804
commit 1554888c0b
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 410 additions and 0 deletions
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160
bsp/raspberry-pico/Kconfig
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@ -237,6 +237,166 @@ menu "On-chip Peripheral Drivers"
default n default n
endif endif
menuconfig BSP_USING_PWM
bool "Enable PWM(A:CH_0 B:CH_1)"
default n
select RT_USING_PWM
if BSP_USING_PWM
config BSP_USING_PWM0
bool "Enable PWM0"
default n
if BSP_USING_PWM0
config BSP_PWM0_A_PIN
int "pwm slice A pin number (GP)"
range 0 29
default 0
config BSP_PWM0_B_PIN
int "pwm slice B pin number (GP)"
range 0 29
default 1
config BSP_PWM0_A_ALL
bool "pwm slice use all A pin"
default n
config BSP_PWM0_B_ALL
bool "pwm slice use all B pin"
default n
endif
config BSP_USING_PWM1
bool "Enable PWM1"
default n
if BSP_USING_PWM1
config BSP_PWM_A_PIN
int "pwm slice A pin number (GP)"
range 0 29
default 2
config BSP_PWM1_B_PIN
int "pwm slice B pin number (GP)"
range 0 29
default 3
config BSP_PWM1_A_ALL
bool "pwm slice use all A pin"
default n
config BSP_PWM1_B_ALL
bool "pwm slice use all B pin"
default n
endif
config BSP_USING_PWM2
bool "Enable PWM2"
default n
if BSP_USING_PWM2
config BSP_PWM2_A_PIN
int "pwm slice A pin number (GP)"
range 0 29
default 4
config BSP_PWM2_B_PIN
int "pwm slice B pin number (GP)"
range 0 29
default 5
config BSP_PWM2_A_ALL
bool "pwm slice use all A pin"
default n
config BSP_PWM2_B_ALL
bool "pwm slice use all B pin"
default n
endif
config BSP_USING_PWM3
bool "Enable PWM3"
default n
if BSP_USING_PWM3
config BSP_PWM3_A_PIN
int "pwm slice A pin number (GP)"
range 0 29
default 6
config BSP_PWM3_B_PIN
int "pwm slice B pin number (GP)"
range 0 29
default 7
config BSP_PWM3_A_ALL
bool "pwm slice use all A pin"
default n
config BSP_PWM3_B_ALL
bool "pwm slice use all B pin"
default n
endif
config BSP_USING_PWM4
bool "Enable PWM4"
default n
if BSP_USING_PWM4
config BSP_PWM4_A_PIN
int "pwm slice A pin number (GP)"
range 0 29
default 8
config BSP_PWM4_B_PIN
int "pwm slice B pin number (GP)"
range 0 29
default 9
config BSP_PWM4_A_ALL
bool "pwm slice use all A pin"
default n
config BSP_PWM4_B_ALL
bool "pwm slice use all B pin"
default n
endif
config BSP_USING_PWM5
bool "Enable PWM5"
default n
if BSP_USING_PWM5
config BSP_PWM5_A_PIN
int "pwm slice A pin number (GP)"
range 0 29
default 10
config BSP_PWM5_B_PIN
int "pwm slice B pin number (GP)"
range 0 29
default 11
config BSP_PWM5_A_ALL
bool "pwm slice use all A pin"
default n
config BSP_PWM5_B_ALL
bool "pwm slice use all B pin"
default n
endif
config BSP_USING_PWM6
bool "Enable PWM6"
default n
if BSP_USING_PWM6
config BSP_PWM6_A_PIN
int "pwm slice A pin number (GP)"
range 0 29
default 12
config BSP_PWM6_B_PIN
int "pwm slice B pin number (GP)"
range 0 29
default 13
config BSP_PWM6_A_ALL
bool "pwm slice use all A pin"
default n
config BSP_PWM6_B_ALL
bool "pwm slice use all B pin"
default n
endif
config BSP_USING_PWM7
bool "Enable PWM7"
default n
if BSP_USING_PWM7
config BSP_PWM7_A_PIN
int "pwm slice A pin number (GP)"
range 0 29
default 14
config BSP_PWM7_B_PIN
int "pwm slice B pin number (GP)"
range 0 29
default 15
endif
endif
menuconfig BSP_USING_I2C menuconfig BSP_USING_I2C
bool "Enable I2C" bool "Enable I2C"
select RT_USING_I2C select RT_USING_I2C

3
bsp/raspberry-pico/drivers/SConscript
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@ -31,6 +31,9 @@ if GetDepend('BSP_USING_I2C'):
if GetDepend('BSP_USING_ON_CHIP_FLASH'): if GetDepend('BSP_USING_ON_CHIP_FLASH'):
src += ['drv_flash.c'] src += ['drv_flash.c']
if GetDepend('BSP_USING_PWM'):
src += ['drv_pwm.c']
group = DefineGroup('Drivers', src, depend = [''], CPPPATH = CPPPATH) group = DefineGroup('Drivers', src, depend = [''], CPPPATH = CPPPATH)
Return('group') Return('group')

229
bsp/raspberry-pico/drivers/drv_pwm.c Normal file
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@ -0,0 +1,229 @@
/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2023-10-20 ChuShicheng first version
*/
#include "drv_pwm.h"
#include "board.h"
#include "hardware/pwm.h"
#ifdef BSP_USING_PWM
#define DBG_LEVEL DBG_LOG
#include <rtdbg.h>
#define LOG_TAG "DRV.PWM"
struct pico_pwm
{
struct rt_device_pwm pwm_device;
rt_uint8_t slice_num;
rt_uint8_t pin_a;
rt_uint8_t pin_b;
rt_uint8_t a_all_flag; /* 1: Two pins simultaneously output PWM A channel */
rt_uint8_t b_all_flag; /* 1: Two pins simultaneously output PWM B channel */
char *name;
};
static struct pico_pwm pico_pwm_obj[] =
{
#ifdef BSP_USING_PWM0
{
.name = "pwm0",
.slice_num = 0,
.pin_a = BSP_PWM0_A_PIN,
.pin_b = BSP_PWM0_B_PIN,
#ifdef BSP_PWM0_A_ALL
.a_all_flag = 1,
#endif /* BSP_PWM0_A_ALL */
#ifdef BSP_PWM0_B_ALL
.b_all_flag = 1,
#endif /* BSP_PWM0_B_ALL */
},
#endif /* BSP_USING_PWM0 */
#ifdef BSP_USING_PWM1
{
.name = "pwm1",
.slice_num = 1,
.pin_a = BSP_PWM1_A_PIN,
.pin_b = BSP_PWM1_B_PIN,
#ifdef BSP_PWM1_A_ALL
.a_all_flag = 1,
#endif /* BSP_PWM1_A_ALL */
#ifdef BSP_PWM1_B_ALL
.b_all_flag = 1,
#endif /* BSP_PWM1_B_ALL */
},
#endif /* BSP_USING_PWM1 */
#ifdef BSP_USING_PWM2
{
.name = "pwm2",
.slice_num = 2,
.pin_a = BSP_PWM2_A_PIN,
.pin_b = BSP_PWM2_B_PIN,
#ifdef BSP_PWM2_A_ALL
.a_all_flag = 1,
#endif /* BSP_PWM2_A_ALL */
#ifdef BSP_PWM2_B_ALL
.b_all_flag = 1,
#endif /* BSP_PWM2_B_ALL */
},
#endif /* BSP_USING_PWM2 */
#ifdef BSP_USING_PWM3
{
.name = "pwm3",
.slice_num = 3,
.pin_a = BSP_PWM3_A_PIN,
.pin_b = BSP_PWM3_B_PIN,
#ifdef BSP_PWM3_A_ALL
.a_all_flag = 1,
#endif /* BSP_PWM3_A_ALL */
#ifdef BSP_PWM3_B_ALL
.b_all_flag = 1,
#endif /* BSP_PWM3_B_ALL */
},
#endif /* BSP_USING_PWM3 */
#ifdef BSP_USING_PWM4
{
.name = "pwm4",
.slice_num = 4,
.pin_a = BSP_PWM4_A_PIN,
.pin_b = BSP_PWM4_B_PIN,
#ifdef BSP_PWM4_A_ALL
.a_all_flag = 1,
#endif /* BSP_PWM4_A_ALL */
#ifdef BSP_PWM4_B_ALL
.b_all_flag = 1,
#endif /* BSP_PWM4_B_ALL */
},
#endif /* BSP_USING_PWM4 */
#ifdef BSP_USING_PWM5
{
.name = "pwm5",
.slice_num = 5,
.pin_a = BSP_PWM5_A_PIN,
.pin_b = BSP_PWM5_B_PIN,
#ifdef BSP_PWM5_A_ALL
.a_all_flag = 1,
#endif /* BSP_PWM5_A_ALL */
#ifdef BSP_PWM5_B_ALL
.b_all_flag = 1,
#endif /* BSP_PWM5_B_ALL */
},
#endif /* BSP_USING_PWM5 */
#ifdef BSP_USING_PWM6
{
.name = "pwm6",
.slice_num = 6,
.pin_a = BSP_PWM6_A_PIN,
.pin_b = BSP_PWM6_B_PIN,
#ifdef BSP_PWM6_A_ALL
.a_all_flag = 1,
#endif /* BSP_PWM6_A_ALL */
#ifdef BSP_PWM6_B_ALL
.b_all_flag = 1,
#endif /* BSP_PWM6_B_ALL */
},
#endif /* BSP_USING_PWM6 */
#ifdef BSP_USING_PWM7
{
.name = "pwm7",
.slice_num = 7,
.pin_a = BSP_PWM7_A_PIN,
.pin_b = BSP_PWM7_B_PIN,
},
#endif /* BSP_USING_PWM7 */
};
static rt_err_t _pwm_set(rt_uint8_t slice_num, struct rt_pwm_configuration *configuration)
{
uint32_t period_hz = 1000000000 / configuration->period;
uint32_t pulse = 1000000000 / configuration->pulse;
pwm_config config = pwm_get_default_config();
pwm_config_set_clkdiv(&config, 1.33f);
pwm_init(slice_num, &config, true);
pwm_set_wrap(slice_num, 100000000 / period_hz);
pwm_set_chan_level(slice_num, configuration->channel, 100000000 / pulse);
return RT_EOK;
}
static rt_err_t _pwm_get(rt_uint8_t slice_num, struct rt_pwm_configuration *configuration)
{
uint32_t period_hz = pwm_hw->slice[slice_num].top;
configuration->period = period_hz * 10;
configuration->pulse = pwm_hw->slice[slice_num].cc * 10;
return RT_EOK;
}
static rt_err_t _pwm_control(struct rt_device_pwm *device, int cmd, void *arg)
{
struct pico_pwm *_pwm = rt_container_of(device, struct pico_pwm, pwm_device);
struct rt_pwm_configuration *configuration = (struct rt_pwm_configuration *)arg;
switch (cmd)
{
case PWM_CMD_ENABLE:
pwm_set_enabled (_pwm->slice_num, RT_TRUE);
return RT_EOK;
case PWM_CMD_DISABLE:
pwm_set_enabled (_pwm->slice_num, RT_FALSE);
return RT_EOK;
case PWM_CMD_SET:
return _pwm_set(_pwm->slice_num, configuration);
case PWM_CMD_GET:
return _pwm_get(_pwm->slice_num, configuration);
default:
return -RT_EINVAL;
}
}
static struct rt_pwm_ops _pwm_ops =
{
_pwm_control
};
int rt_hw_pwm_init(void)
{
int result = RT_EOK;
for (int i = 0; i < sizeof(pico_pwm_obj) / sizeof(pico_pwm_obj[0]); i++)
{
if(pico_pwm_obj[i].a_all_flag)
{
gpio_set_function(pico_pwm_obj[i].slice_num * 2, GPIO_FUNC_PWM);
gpio_set_function(pico_pwm_obj[i].slice_num * 2 + 16, GPIO_FUNC_PWM);
}
else
{
gpio_set_function(pico_pwm_obj[i].pin_a, GPIO_FUNC_PWM);
}
if(pico_pwm_obj[i].b_all_flag)
{
gpio_set_function(pico_pwm_obj[i].slice_num * 2 + 1, GPIO_FUNC_PWM);
gpio_set_function(pico_pwm_obj[i].slice_num * 2 + 17, GPIO_FUNC_PWM);
}
else
{
gpio_set_function(pico_pwm_obj[i].pin_b, GPIO_FUNC_PWM);
}
result = rt_device_pwm_register(&pico_pwm_obj[i].pwm_device, pico_pwm_obj[i].name, &_pwm_ops, 0);
if(result != RT_EOK)
{
LOG_E("%s register fail.", pico_pwm_obj[i].name);
}
}
return result;
}
INIT_DEVICE_EXPORT(rt_hw_pwm_init);
#endif /* BSP_USING_PWM */

18
bsp/raspberry-pico/drivers/drv_pwm.h Normal file
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@ -0,0 +1,18 @@
/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2023-10-20 ChuShicheng first version
*/
#ifndef __DRV_PWM_H__
#define __DRV_PWM_H__
#include <rtdevice.h>
int rt_hw_pwm_init(void);
#endif /* __DRV_PWM_H__ */