参考代码

sal/esp32s3/kernel/os_mutex.c

@@ -0,0 +1,80 @@
+#include "os/os.h"
+#include "os_util.h"
+#include "semphr.h"
+
+os_state os_mutex_create(os_mutex_t *mutex)
+{
+    OS_ASS_HDL(!os_mutex_is_valid(mutex), mutex->handle);
+
+    mutex->handle = xSemaphoreCreateMutex();
+    if (mutex->handle == NULL)
+    {
+        OS_ERR("err %p\r\n", mutex->handle);
+        return OS_FAIL;
+    }
+
+    return OS_OK;
+}
+
+os_state os_mutex_delete(os_mutex_t *mutex)
+{
+    OS_ASS_HDL(os_mutex_is_valid(mutex), mutex->handle);
+
+    vSemaphoreDelete(mutex->handle);
+    mutex->handle = NULL;
+    return OS_OK;
+}
+
+os_state os_mutex_lock(os_mutex_t *mutex, os_time_t wait_ms)
+{
+    BaseType_t ret;
+
+    OS_ASS_HDL(os_mutex_is_valid(mutex), mutex->handle);
+
+    ret = xSemaphoreTake(mutex->handle, os_calc_msec_to_ticks(wait_ms));
+    if (ret != pdPASS)
+    {
+        OS_DBG("%s() fail @ %d, %u ms\n", __func__, __LINE__, wait_ms);
+        return OS_FAIL;
+    }
+
+    return OS_OK;
+}
+
+os_state os_mutex_unlock(os_mutex_t *mutex)
+{
+    BaseType_t ret;
+
+    OS_ASS_HDL(os_mutex_is_valid(mutex), mutex->handle);
+
+    ret = xSemaphoreGive(mutex->handle);
+    if (ret != pdPASS)
+    {
+        OS_DBG("%s() fail @ %d\n", __func__, __LINE__);
+        return OS_FAIL;
+    }
+
+    return OS_OK;
+}
+
+os_thread_handle_t os_mutex_get_holder(os_mutex_t *mutex)
+{
+    if (!os_mutex_is_valid(mutex))
+    {
+        return OS_INVALID_HANDLE;
+    }
+
+    return (os_thread_handle_t)xSemaphoreGetMutexHolder(mutex->handle);
+}
+
+bool os_mutex_is_valid(os_mutex_t *mutex)
+{
+    if (mutex && mutex->handle)
+    {
+        return true;
+    }
+    else
+    {
+        return false;
+    }
+}