mirror of
https://github.com/RT-Thread/rt-thread.git
synced 2025-02-23 07:49:19 +08:00
69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
/*
|
||
* Copyright (c) 2022-2024, Xiaohua Semiconductor Co., Ltd.
|
||
*
|
||
* SPDX-License-Identifier: Apache-2.0
|
||
*
|
||
* Change Logs:
|
||
* Date Author Notes
|
||
* 2024-12-30 CDT first version
|
||
*/
|
||
|
||
/*
|
||
* 程序清单：这是 PWM 设备使用例程
|
||
* 例程导出了 pwm_sample 命令到控制终端。
|
||
* 命令调用格式：pwm_sample x
|
||
* 命令解释：x 对应的是设备名称，可以通过 list device 获取，例如：pwm_sample pwm_a1
|
||
*/
|
||
|
||
#include <rtthread.h>
|
||
#include <rtdevice.h>
|
||
#include <board.h>
|
||
|
||
#ifdef BSP_USING_PWM
|
||
|
||
#define PWM_DEV_CHANNEL 1
|
||
|
||
struct rt_device_pwm *pwm_dev;
|
||
|
||
|
||
static rt_int32_t pwm_sample(int argc, char *argv[])
|
||
{
|
||
rt_uint32_t period = 50000;
|
||
rt_uint32_t pulse = 45000;
|
||
|
||
if (argc != 2)
|
||
{
|
||
return -RT_ERROR;
|
||
}
|
||
|
||
pwm_dev = (struct rt_device_pwm *)rt_device_find(argv[1]);
|
||
if (pwm_dev == RT_NULL)
|
||
{
|
||
rt_kprintf("pwm sample run failed! can't find %s device!\n", argv[1]);
|
||
return -RT_ERROR;
|
||
}
|
||
|
||
rt_pwm_set(pwm_dev, PWM_DEV_CHANNEL, period, pulse);
|
||
rt_pwm_enable(pwm_dev, PWM_DEV_CHANNEL);
|
||
rt_pwm_set(pwm_dev, PWM_DEV_CHANNEL + 1, period, pulse);
|
||
rt_pwm_enable(pwm_dev, PWM_DEV_CHANNEL + 1);
|
||
// rt_pwm_set_period(pwm_dev,PWM_DEV_CHANNEL,100000);
|
||
|
||
while (1)
|
||
{
|
||
rt_thread_mdelay(50);
|
||
pulse += 5000;
|
||
rt_pwm_set_pulse(pwm_dev, PWM_DEV_CHANNEL, pulse);
|
||
rt_pwm_set_pulse(pwm_dev, PWM_DEV_CHANNEL + 1, pulse);
|
||
if (pulse >= period)
|
||
{
|
||
pulse = 0;
|
||
}
|
||
}
|
||
}
|
||
MSH_CMD_EXPORT(pwm_sample, pwm_sample [opt])
|
||
#endif
|
||
/*
|
||
EOF
|
||
*/
|