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