diff options
Diffstat (limited to 'components')
| -rw-r--r-- | components/drivers/misc/rt_drv_pwm.c | 33 |
1 files changed, 18 insertions, 15 deletions
diff --git a/components/drivers/misc/rt_drv_pwm.c b/components/drivers/misc/rt_drv_pwm.c index 53aaad8223..bb599721b0 100644 --- a/components/drivers/misc/rt_drv_pwm.c +++ b/components/drivers/misc/rt_drv_pwm.c @@ -7,6 +7,7 @@ * Date Author Notes * 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 */ #include <rtdevice.h> @@ -37,7 +38,7 @@ static rt_size_t _pwm_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_ rt_uint32_t *pulse = (rt_uint32_t *)buffer; struct rt_pwm_configuration configuration = {0}; - configuration.channel = pos; + configuration.channel = (pos > 0) ? (pos) : (-pos); if (pwm->ops->control) { @@ -65,7 +66,7 @@ static rt_size_t _pwm_write(rt_device_t dev, rt_off_t pos, const void *buffer, r rt_uint32_t *pulse = (rt_uint32_t *)buffer; struct rt_pwm_configuration configuration = {0}; - configuration.channel = pos; + configuration.channel = (pos > 0) ? (pos) : (-pos); if (pwm->ops->control) { @@ -169,7 +170,7 @@ rt_err_t rt_pwm_set(struct rt_device_pwm *device, int channel, rt_uint32_t perio return -RT_EIO; } - configuration.channel = channel; + configuration.channel = (channel > 0) ? (channel) : (-channel); configuration.period = period; configuration.pulse = pulse; result = rt_device_control(&device->parent, PWM_CMD_SET, &configuration); @@ -187,7 +188,7 @@ rt_err_t rt_pwm_set_period(struct rt_device_pwm *device, int channel, rt_uint32_ return -RT_EIO; } - configuration.channel = channel; + configuration.channel = (channel > 0) ? (channel) : (-channel); configuration.period = period; result = rt_device_control(&device->parent, PWM_CMD_SET_PERIOD, &configuration); @@ -204,7 +205,7 @@ rt_err_t rt_pwm_set_pulse(struct rt_device_pwm *device, int channel, rt_uint32_t return -RT_EIO; } - configuration.channel = channel; + configuration.channel = (channel > 0) ? (channel) : (-channel); configuration.pulse = pulse; result = rt_device_control(&device->parent, PWM_CMD_SET_PULSE, &configuration); @@ -249,7 +250,7 @@ static int pwm(int argc, char **argv) } else { - rt_kprintf("pwm probe <device name> - probe pwm by name\n"); + rt_kprintf("pwm probe <device name> - probe pwm by name\n"); } } else @@ -269,9 +270,11 @@ static int pwm(int argc, char **argv) } else { - rt_kprintf("pwm enable <channel> - enable pwm channel\n"); + rt_kprintf("pwm enable <channel> - enable pwm channel\n"); + rt_kprintf(" e.g. MSH >pwm enable 1 - PWM_CH1 nomal\n"); + rt_kprintf(" e.g. MSH >pwm enable -1 - PWM_CH1N complememtary\n"); } - } + } else if(!strcmp(argv[1], "disable")) { if(argc == 3) @@ -280,7 +283,7 @@ static int pwm(int argc, char **argv) } else { - rt_kprintf("pwm disable <channel> - disable pwm channel\n"); + rt_kprintf("pwm disable <channel> - disable pwm channel\n"); } } else if(!strcmp(argv[1], "get")) @@ -315,18 +318,18 @@ static int pwm(int argc, char **argv) else { - rt_kprintf("pwm get <channel> - get pwm channel info\n"); + rt_kprintf("pwm get <channel> - get pwm channel info\n"); } } } else { rt_kprintf("Usage: \n"); - rt_kprintf("pwm probe <device name> - probe pwm by name\n"); - rt_kprintf("pwm enable <channel> - enable pwm channel\n"); - rt_kprintf("pwm disable <channel>- disable pwm channel\n"); - rt_kprintf("pwm get <channel> - get pwm channel info\n"); - rt_kprintf("pwm set <channel> <period> <pulse> - set pwm channel info\n"); + rt_kprintf("pwm probe <device name> - probe pwm by name\n"); + rt_kprintf("pwm enable <channel> - enable pwm channel\n"); + rt_kprintf("pwm disable <channel> - disable pwm channel\n"); + rt_kprintf("pwm get <channel> - get pwm channel info\n"); + rt_kprintf("pwm set <channel> <period> <pulse> - set pwm channel info\n"); result = - RT_ERROR; } |