Update adc.c
check fun is NULL, error
@@ -46,7 +46,7 @@ static rt_err_t _adc_control(rt_device_t dev, int cmd, void *args)
rt_err_t result = RT_EOK;
rt_adc_device_t adc = (struct rt_adc_device *)dev;
- if (adc->ops->enabled != RT_NULL)
+ if (adc->ops->enabled == RT_NULL)
{
return -RT_ENOSYS;
}
