[doxygen] add doxygen comment for cputimer components

Organize driver comment for cputimer component

Signed-off-by: 1078249029 <[email protected]>

components/drivers/cputime/cputime.c

@@ -1,24 +1,34 @@
 /*
- * Copyright (c) 2006-2023, RT-Thread Development Team
+ * Copyright (c) 2006-2025 RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author            Notes
  * 2017-12-23     Bernard           first version
+ * 2025-01-30     wumingzi          transform to doxygen comment
  */
 
 #include <rtdevice.h>
 #include <rtthread.h>
 #include <sys/errno.h>
 
+/**
+ * @addtogroup  Drivers                 RTTHREAD Driver
+ * @defgroup    cputimer                cputimer
+ * @brief       cputimer driver api
+ * @ingroup     Drivers
+ * @addtogroup  cputimer
+ * @{
+ */
+
 static const struct rt_clock_cputime_ops *_cputime_ops  = RT_NULL;
 
 /**
- * The clock_cpu_getres() function shall return the resolution of CPU time, the
+ * @brief   The clock_cpu_getres() function shall return the resolution of CPU time, the
  * number of nanosecond per tick.
  *
- * @return the number of nanosecond per tick(x (1000UL * 1000))
+ * @return  the number of nanosecond per tick(x (1000UL * 1000))
  */
 uint64_t clock_cpu_getres(void)
 {
@@ -30,9 +40,9 @@ uint64_t clock_cpu_getres(void)
 }
 
 /**
- * The clock_cpu_gettime() function shall return the current value of cpu time tick.
+ * @brief   The clock_cpu_gettime() function shall return the current value of cpu time tick.
  *
- * @return the cpu tick
+ * @return  the cpu tick
  */
 uint64_t clock_cpu_gettime(void)
 {
@@ -44,7 +54,7 @@ uint64_t clock_cpu_gettime(void)
 }
 
 /**
- * The clock_cpu_settimeout() fucntion set timeout time and timeout callback function
+ * @brief   The clock_cpu_settimeout() fucntion set timeout time and timeout callback function
  * The timeout callback function will be called when the timeout time is reached
  *
  * @param tick the Timeout tick
@@ -61,6 +71,11 @@ int clock_cpu_settimeout(uint64_t tick, void (*timeout)(void *param), void *para
     return 0;
 }
 
+/**
+ * @brief   Check if cputimer timeout callback function has been set
+ *
+ * @return  RT_FALSE or RT_TURE
+ */
 int clock_cpu_issettimeout(void)
 {
     if (_cputime_ops)
@@ -69,12 +84,12 @@ int clock_cpu_issettimeout(void)
 }
 
 /**
- * The clock_cpu_microsecond() fucntion shall return the microsecond according to
+ * @brief   The clock_cpu_microsecond() fucntion shall return the microsecond according to
  * cpu_tick parameter.
  *
  * @param cpu_tick the cpu tick
  *
- * @return the microsecond
+ * @return  the microseconds
  */
 uint64_t clock_cpu_microsecond(uint64_t cpu_tick)
 {
@@ -84,12 +99,12 @@ uint64_t clock_cpu_microsecond(uint64_t cpu_tick)
 }
 
 /**
- * The clock_cpu_microsecond() fucntion shall return the millisecond according to
+ * @brief   The clock_cpu_millisecond() fucntion shall return the millisecond according to
  * cpu_tick parameter.
  *
  * @param cpu_tick the cpu tick
  *
- * @return the millisecond
+ * @return  the milliseconds
  */
 uint64_t clock_cpu_millisecond(uint64_t cpu_tick)
 {
@@ -99,9 +114,9 @@ uint64_t clock_cpu_millisecond(uint64_t cpu_tick)
 }
 
 /**
- * The clock_cpu_seops() function shall set the ops of cpu time.
+ * @brief   The clock_cpu_seops() function shall set the ops of cpu time.
  *
- * @return always return 0.
+ * @return  always return 0.
  */
 int clock_cpu_setops(const struct rt_clock_cputime_ops *ops)
 {
@@ -114,3 +129,4 @@ int clock_cpu_setops(const struct rt_clock_cputime_ops *ops)
 
     return 0;
 }
+/*! @}*/

components/drivers/cputime/cputime_cortexm.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2023, RT-Thread Development Team
+ * Copyright (c) 2006-2025 RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -18,7 +18,11 @@
 #include <perf_counter.h>
 #endif
 
-/* Use Cycle counter of Data Watchpoint and Trace Register for CPU time */
+/**
+ * @brief   Get nanoseconds per tick
+ *
+ * @return  the number of nanoseconds per tick multiplied by 1 000 000
+ */
 static uint64_t cortexm_cputime_getres(void)
 {
     uint64_t ret = 1000UL * 1000 * 1000;
@@ -27,6 +31,11 @@ static uint64_t cortexm_cputime_getres(void)
     return ret;
 }
 
+/**
+ * @brief   Read time counter
+ *
+ * @return  value of ticks
+ */
 static uint64_t cortexm_cputime_gettime(void)
 {
 #ifdef PKG_USING_PERF_COUNTER
@@ -42,7 +51,12 @@ const static struct rt_clock_cputime_ops _cortexm_ops =
     cortexm_cputime_gettime
 };
 
-
+/**
+ * @brief   Init cputimer operation of cortex-m architecture by using Cycle
+            counter of Data Watchpoint and Trace Register for CPU time
+ *
+ * @return  return 0 forever
+ */
 int cortexm_cputime_init(void)
 {
 #ifdef PKG_USING_PERF_COUNTER
@@ -66,4 +80,4 @@ int cortexm_cputime_init(void)
 #endif /* PKG_USING_PERF_COUNTER */
     return 0;
 }
-INIT_BOARD_EXPORT(cortexm_cputime_init);
+INIT_BOARD_EXPORT(cortexm_cputime_init);

components/drivers/cputime/cputime_riscv.c

@@ -1,11 +1,35 @@
+/*
+ * Copyright (c) 2006-2025 RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author            Notes
+ * 2022-11-23     Guozhanxin        first version
+ * 2023-04-12     xqyjlj            fix cpu timer in multithreading
+ * 2025-01-30     wumingzi          add doxygen comment
+ */
+
 #include <rthw.h>
 #include <rtdevice.h>
 #include <rtthread.h>
 
 #include <board.h>
 
-/* Use Cycle counter of Data Watchpoint and Trace Register for CPU time */
+/**
+ * @addtogroup  Drivers                 RTTHREAD Driver
+ * @defgroup    cputimer                cputimer
+ * @brief       cputimer driver api
+ * @ingroup     Drivers
+ * @addtogroup  cputimer
+ * @{
+ */
 
+/**
+ * @brief   Get nanoseconds per tick
+ *
+ * @return  the number of nanoseconds per tick multiplied by 1 000 000
+ */
 static uint64_t riscv_cputime_getres(void)
 {
     uint64_t ret = 1000UL * 1000 * 1000;
@@ -14,6 +38,11 @@ static uint64_t riscv_cputime_getres(void)
     return ret;
 }
 
+/**
+ * @brief   Read time counter
+ *
+ * @return  value of ticks
+ */
 static uint64_t riscv_cputime_gettime(void)
 {
     uint64_t time_elapsed;
@@ -29,9 +58,16 @@ const static struct rt_clock_cputime_ops _riscv_ops =
     riscv_cputime_gettime
 };
 
+/**
+ * @brief   Init cputimer operation of riscv architecture
+ *
+ * @return  return 0 forever
+ */
 int riscv_cputime_init(void)
 {
     clock_cpu_setops(&_riscv_ops);
     return 0;
 }
 INIT_BOARD_EXPORT(riscv_cputime_init);
+
+/*! @}*/