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[rt_drv_pwm]完善PWM框架互补输出部分代码 (#6338)

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* [pwm]Improve the code

* 将与bsp无关的代码移植到框架部分

* 添加注释
This commit is contained in:
liYangYang
2022-09-01 12:59:44 +08:00
committed by GitHub
parent 6ac09a6db0
commit d25bf469fa
3 changed files with 43 additions and 12 deletions
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47
components/drivers/misc/rt_drv_pwm.c
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@@ -8,6 +8,7 @@
* 2018-05-07 aozima the first version
* 2022-05-14 Stanley Lwin add pwm function
* 2022-07-25 liYony fix complementary outputs and add usage information in finsh
* 2022-08-31 liYony Add complementary output section to framework for management
*/
#include <rtdevice.h>
@@ -16,10 +17,20 @@ static rt_err_t _pwm_control(rt_device_t dev, int cmd, void *args)
{
rt_err_t result = RT_EOK;
struct rt_device_pwm *pwm = (struct rt_device_pwm *)dev;
struct rt_pwm_configuration *configuration = (struct rt_pwm_configuration *)args;
if (pwm->ops->control)
switch (cmd)
{
result = pwm->ops->control(pwm, cmd, args);
case PWMN_CMD_ENABLE:
configuration->complementary = RT_TRUE;
break;
case PWMN_CMD_DISABLE:
configuration->complementary = RT_FALSE;
break;
default:
if(pwm->ops->control)
result = pwm->ops->control(pwm, cmd, args);
break;
}
return result;
@@ -136,8 +147,20 @@ rt_err_t rt_pwm_enable(struct rt_device_pwm *device, int channel)
return -RT_EIO;
}
configuration.channel = (channel > 0) ? (channel) : (-channel); /* Make it is positive num forever */
configuration.complementary = (channel > 0) ? (RT_FALSE) : (RT_TRUE); /* If nagetive, it's complementary */
/* Make it is positive num forever */
configuration.channel = (channel > 0) ? (channel) : (-channel);
/* If channel is a positive number (0 ~ n), it means using normal output pin.
* If channel is a negative number (0 ~ -n), it means using complementary output pin. */
if(channel > 0)
{
result = rt_device_control(&device->parent, PWMN_CMD_DISABLE, &configuration);
}
else
{
result = rt_device_control(&device->parent, PWMN_CMD_ENABLE, &configuration);
}
result = rt_device_control(&device->parent, PWM_CMD_ENABLE, &configuration);
return result;
@@ -153,8 +176,20 @@ rt_err_t rt_pwm_disable(struct rt_device_pwm *device, int channel)
return -RT_EIO;
}
configuration.channel = (channel > 0) ? (channel) : (-channel); /* Make it is positive num forever */
configuration.complementary = (channel > 0) ? (RT_FALSE) : (RT_TRUE); /* If nagetive, it's complementary */
/* Make it is positive num forever */
configuration.channel = (channel > 0) ? (channel) : (-channel);
/* If channel is a positive number (0 ~ n), it means using normal output pin.
* If channel is a negative number (0 ~ -n), it means using complementary output pin. */
if(channel > 0)
{
result = rt_device_control(&device->parent, PWMN_CMD_DISABLE, &configuration);
}
else
{
result = rt_device_control(&device->parent, PWMN_CMD_ENABLE, &configuration);
}
result = rt_device_control(&device->parent, PWM_CMD_DISABLE, &configuration);
return result;