Merge branch 'master' into step4

11 files changed, 61 insertions, 14 deletions

diff --git a/components/dfs/filesystems/devfs/devfs.c b/components/dfs/filesystems/devfs/devfs.c
index 7637074dbb..e457f18727 100644
--- a/components/dfs/filesystems/devfs/devfs.c
+++ b/components/dfs/filesystems/devfs/devfs.c
@@ -326,7 +326,7 @@ static const struct dfs_filesystem_ops _device_fs =
 
 int devfs_init(void)
 {
-    /* register rom file system */
+    /* register device file system */
     dfs_register(&_device_fs);
 
     return 0;
diff --git a/components/drivers/audio/audio.c b/components/drivers/audio/audio.c
index 4cec8a4a9c..846dad07cf 100644
--- a/components/drivers/audio/audio.c
+++ b/components/drivers/audio/audio.c
@@ -19,7 +19,9 @@
 #define DBG_LVL              DBG_INFO
 #include <rtdbg.h>
 
+#ifndef MIN
 #define MIN(a, b)         ((a) < (b) ? (a) : (b))
+#endif
 
 enum
 {
diff --git a/components/drivers/include/ipc/ringbuffer.h b/components/drivers/include/ipc/ringbuffer.h
index 4487d02c47..2afd2ca213 100644
--- a/components/drivers/include/ipc/ringbuffer.h
+++ b/components/drivers/include/ipc/ringbuffer.h
@@ -71,6 +71,7 @@ rt_size_t rt_ringbuffer_put_force(struct rt_ringbuffer *rb, const rt_uint8_t *pt
 rt_size_t rt_ringbuffer_putchar(struct rt_ringbuffer *rb, const rt_uint8_t ch);
 rt_size_t rt_ringbuffer_putchar_force(struct rt_ringbuffer *rb, const rt_uint8_t ch);
 rt_size_t rt_ringbuffer_get(struct rt_ringbuffer *rb, rt_uint8_t *ptr, rt_uint16_t length);
+rt_size_t rt_ringbuffer_peak(struct rt_ringbuffer *rb, rt_uint8_t **ptr);
 rt_size_t rt_ringbuffer_getchar(struct rt_ringbuffer *rb, rt_uint8_t *ch);
 rt_size_t rt_ringbuffer_data_len(struct rt_ringbuffer *rb);
 
diff --git a/components/drivers/pm/pm.c b/components/drivers/pm/pm.c
index dd7cc2ae63..f9190ae9ef 100644
--- a/components/drivers/pm/pm.c
+++ b/components/drivers/pm/pm.c
@@ -8,6 +8,7 @@
  * 2012-06-02     Bernard      the first version
  * 2018-08-02     Tanek        split run and sleep modes, support custom mode
  * 2019-04-28     Zero-Free    improve PM mode and device ops interface
+ * 2020-11-23     zhangsz      update pm mode select
  */
 
 #include <rthw.h>
@@ -214,8 +215,6 @@ static void _pm_change_sleep_mode(struct rt_pm *pm, rt_uint8_t mode)
  */
 void rt_system_power_manager(void)
 {
-    rt_uint8_t mode;
-
     if (_pm_init_flag == 0)
         return;
 
@@ -223,8 +222,7 @@ void rt_system_power_manager(void)
     _pm_frequency_scaling(&_pm);
 
     /* Low Power Mode Processing */
-    mode = _pm_select_sleep_mode(&_pm);
-    _pm_change_sleep_mode(&_pm, mode);
+    _pm_change_sleep_mode(&_pm, _pm.sleep_mode);
 }
 
 /**
@@ -248,6 +246,7 @@ void rt_pm_request(rt_uint8_t mode)
     pm = &_pm;
     if (pm->modes[mode] < 255)
         pm->modes[mode] ++;
+    _pm_select_sleep_mode(pm);
     rt_hw_interrupt_enable(level);
 }
 
@@ -273,6 +272,7 @@ void rt_pm_release(rt_uint8_t mode)
     pm = &_pm;
     if (pm->modes[mode] > 0)
         pm->modes[mode] --;
+    _pm_select_sleep_mode(pm);
     rt_hw_interrupt_enable(level);
 }
 
@@ -516,6 +516,10 @@ void rt_system_pm_init(const struct rt_pm_ops *ops,
     pm->device_pm = RT_NULL;
     pm->device_pm_number = 0;
 
+#if IDLE_THREAD_STACK_SIZE <= 256
+    #error "[pm.c ERR] IDLE Stack Size Too Small!"
+#endif
+
     _pm_init_flag = 1;
 }
 
diff --git a/components/drivers/rtc/alarm.c b/components/drivers/rtc/alarm.c
index 71b6e7236a..53cb538321 100644
--- a/components/drivers/rtc/alarm.c
+++ b/components/drivers/rtc/alarm.c
@@ -8,6 +8,7 @@
  * 2012-10-27     heyuanjie87       first version.
  * 2013-05-17     aozima            initial alarm event & mutex in system init.
  * 2020-10-15     zhangsz           add alarm flags hour minute second.
+ * 2020-11-09     zhangsz           fix alarm set when modify rtc time.
  */
 
 #include <rtthread.h>
@@ -102,7 +103,7 @@ static void alarm_wakeup(struct rt_alarm *alarm, struct tm *now)
         {
             alarm->wktime.tm_hour = now->tm_hour;
             alarm->wktime.tm_min = now->tm_min;
-            alarm->wktime.tm_sec = alarm->wktime.tm_sec + 1;
+            alarm->wktime.tm_sec = now->tm_sec + 1;
             if (alarm->wktime.tm_sec > 59)
             {
                 alarm->wktime.tm_sec = 0;
@@ -125,7 +126,7 @@ static void alarm_wakeup(struct rt_alarm *alarm, struct tm *now)
             alarm->wktime.tm_hour = now->tm_hour;
             if (alarm->wktime.tm_sec == now->tm_sec)
             {
-                alarm->wktime.tm_min = alarm->wktime.tm_min + 1;
+                alarm->wktime.tm_min = now->tm_min + 1;
                 if (alarm->wktime.tm_min > 59)
                 {
                     alarm->wktime.tm_min = 0;
@@ -144,7 +145,7 @@ static void alarm_wakeup(struct rt_alarm *alarm, struct tm *now)
             if ((alarm->wktime.tm_min == now->tm_min) &&
                 (alarm->wktime.tm_sec == now->tm_sec))
             {
-                alarm->wktime.tm_hour = alarm->wktime.tm_hour + 1;
+                alarm->wktime.tm_hour = now->tm_hour + 1;
                 if (alarm->wktime.tm_hour > 23)
                 {
                     alarm->wktime.tm_hour = 0;
diff --git a/components/drivers/sdio/sdio.c b/components/drivers/sdio/sdio.c
index 65bf87b895..f5d97cdd08 100644
--- a/components/drivers/sdio/sdio.c
+++ b/components/drivers/sdio/sdio.c
@@ -892,9 +892,9 @@ static rt_int32_t sdio_init_card(struct rt_mmcsd_host *host, rt_uint32_t ocr)
 
     if (card->flags & CARD_FLAG_HIGHSPEED) 
     {
-        mmcsd_set_clock(host, 50000000);
-    } 
-    else 
+        mmcsd_set_clock(host, card->host->freq_max > 50000000 ? 50000000 : card->host->freq_max);
+    }
+    else
     {
         mmcsd_set_clock(host, card->cis.max_tran_speed);
     }
diff --git a/components/drivers/serial/serial.c b/components/drivers/serial/serial.c
index 2511f18102..c2cc2f615c 100644
--- a/components/drivers/serial/serial.c
+++ b/components/drivers/serial/serial.c
@@ -221,7 +221,10 @@ rt_inline int _serial_poll_rx(struct rt_serial_device *serial, rt_uint8_t *data,
         *data = ch;
         data ++; length --;
 
-        if (ch == '\n') break;
+        if(serial->parent.open_flag & RT_DEVICE_FLAG_STREAM)
+        {
+            if (ch == '\n') break;
+        }
     }
 
     return size - length;
diff --git a/components/drivers/src/ringbuffer.c b/components/drivers/src/ringbuffer.c
index c6a491a7cc..88afd19506 100644
--- a/components/drivers/src/ringbuffer.c
+++ b/components/drivers/src/ringbuffer.c
@@ -194,6 +194,40 @@ rt_size_t rt_ringbuffer_get(struct rt_ringbuffer *rb,
 RTM_EXPORT(rt_ringbuffer_get);
 
 /**
+ *  peak data from ring buffer
+ */
+rt_size_t rt_ringbuffer_peak(struct rt_ringbuffer *rb, rt_uint8_t **ptr)
+{
+    RT_ASSERT(rb != RT_NULL);
+
+    *ptr = RT_NULL;
+
+    /* whether has enough data  */
+    rt_size_t size = rt_ringbuffer_data_len(rb);
+
+    /* no data */
+    if (size == 0)
+        return 0;
+
+    *ptr = &rb->buffer_ptr[rb->read_index];
+
+    if(rb->buffer_size - rb->read_index > size)
+    {
+        rb->read_index += size;
+        return size;
+    }
+
+    size = rb->buffer_size - rb->read_index;
+
+    /* we are going into the other side of the mirror */
+    rb->read_mirror = ~rb->read_mirror;
+    rb->read_index = 0;
+
+    return size;
+}
+RTM_EXPORT(rt_ringbuffer_peak);
+
+/**
  * put a character into ring buffer
  */
 rt_size_t rt_ringbuffer_putchar(struct rt_ringbuffer *rb, const rt_uint8_t ch)
diff --git a/components/drivers/src/workqueue.c b/components/drivers/src/workqueue.c
index 2e0280df3a..2b5630d8d0 100644
--- a/components/drivers/src/workqueue.c
+++ b/components/drivers/src/workqueue.c
@@ -424,6 +424,6 @@ int rt_work_sys_workqueue_init(void)
     return RT_EOK;
 }
 
-INIT_DEVICE_EXPORT(rt_work_sys_workqueue_init);
+INIT_PREV_EXPORT(rt_work_sys_workqueue_init);
 #endif
 #endif
diff --git a/components/libc/compilers/common/termios.h b/components/libc/compilers/common/termios.h
index ee2b4d5718..414d0c0cb3 100644
--- a/components/libc/compilers/common/termios.h
+++ b/components/libc/compilers/common/termios.h
@@ -9,6 +9,8 @@
 #ifndef _TERMIOS_H__
 #define _TERMIOS_H__
 
+#include <rtconfig.h>
+
 #ifdef RT_USING_POSIX_TERMIOS
 #include <sys/types.h>
 #include <posix_termios.h>
diff --git a/components/libc/pthreads/semaphore.c b/components/libc/pthreads/semaphore.c
index 2bef10022e..2ed93e99b6 100644
--- a/components/libc/pthreads/semaphore.c
+++ b/components/libc/pthreads/semaphore.c
@@ -64,7 +64,7 @@ static sem_t *posix_sem_find(const char* name)
 
     for (iter = posix_sem_list; iter != RT_NULL; iter = iter->next)
     {
-        object = (rt_object_t)&(iter->sem);
+        object = (rt_object_t)iter->sem;
 
         if (strncmp(object->name, name, RT_NAME_MAX) == 0)
         {