[HUST CSE][document] Fix some comments, invalid grouping commands and warnings in Doxygen.

将Doxygen输入文件（由Doxyfile中的INPUT定义）中的失效Doxygen分组指令（如/*@*/和/*@}*/）更改为有效的分组指令（如/**@*/和/**@}*/）；（此处只对INPUT中的文件做了修改，bsp目录下和libcpu目录下存在近万个失效的Doxygen分组指令，但由于不作为文档的输入文件且这些文件过于庞大老旧，没有对这些文件中的无效指令做修改）
将图片文件统一放入了images目录下；
修改了Doxyfile和部分Doxygen注释，使得Doxyfile能够定位到新的代码路径且不受重复实现的影响；
解决了一些注释中的参数名不匹配、参数多余/缺失等问题。

src/components.c

@@ -174,6 +174,8 @@ struct rt_thread main_thread;
  * @brief  The system main thread. In this thread will call the rt_components_init()
  *         for initialization of RT-Thread Components and call the user's programming
  *         entry main().
+ *
+ * @param  parameter is the arg of the thread.
  */
 void main_thread_entry(void *parameter)
 {
@@ -228,6 +230,8 @@ void rt_application_init(void)
 /**
  * @brief  This function will call all levels of initialization functions to complete
  *         the initialization of the system, and finally start the scheduler.
+ *
+ * @return Normally never returns. If 0 is returned, the scheduler failed.
  */
 int rtthread_startup(void)
 {

src/cpu.c

@@ -178,6 +178,8 @@ struct rt_cpu *rt_cpu_self(void)
 /**
  * @brief   This fucntion will return the cpu object corresponding to index.
  *
+ * @param   index is the index of target cpu object.
+ *
  * @return  Return a pointer to the cpu object corresponding to index.
  */
 struct rt_cpu *rt_cpu_index(int index)
@@ -242,6 +244,8 @@ RTM_EXPORT(rt_cpus_unlock);
  * This function is invoked by scheduler.
  * It will restore the lock state to whatever the thread's counter expects.
  * If target thread not locked the cpus then unlock the cpus lock.
+ *
+ * @param   thread is a pointer to the target thread.
  */
 void rt_cpus_lock_status_restore(struct rt_thread *thread)
 {

src/device.c

@@ -461,8 +461,8 @@ RTM_EXPORT(rt_device_set_tx_complete);
 /**
  * This function  bind drvier and device
  *
- * @param driver the pointer of driver structure
  * @param device the pointer of device structure
+ * @param driver the pointer of driver structure
  * @param node the pointer of fdt node structure
  *
  * @return the error code, RT_EOK on successfully.

src/kservice.c

@@ -1902,6 +1902,8 @@ const rt_uint8_t __lowest_bit_bitmap[] =
  * Bits are numbered starting at 1 (the least significant bit).  A return value of
  * zero from any of these functions means that the argument was zero.
  *
+ * @param value is the value to find the first bit set in.
+ *
  * @return return the index of the first bit set. If value is 0, then this function
  * shall return 0.
  */
@@ -1937,6 +1939,8 @@ const rt_uint8_t __lowest_bit_bitmap[] =
  * Bits are numbered starting at 1 (the least significant bit).  A return value of
  * zero from any of these functions means that the argument was zero.
  *
+ * @param value is the value to find the first bit set in.
+ *
  * @return Return the index of the first bit set. If value is 0, then this function
  *         shall return 0.
  */

src/scheduler_mp.c

@@ -239,6 +239,7 @@ void rt_system_scheduler_start(void)
 
 /**
  * @addtogroup Thread
+ * @cond
  */
 
 /**@{*/
@@ -754,3 +755,4 @@ rt_uint16_t rt_critical_level(void)
 RTM_EXPORT(rt_critical_level);
 
 /**@}*/
+/**@endcond*/

src/scheduler_up.c

@@ -212,6 +212,7 @@ void rt_system_scheduler_start(void)
 
 /**
  * @addtogroup Thread
+ * @cond
  */
 
 /**@{*/
@@ -500,3 +501,4 @@ rt_uint16_t rt_critical_level(void)
 RTM_EXPORT(rt_critical_level);
 
 /**@}*/
+/**@endcond*/