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2026-06-09 16:39:17 +08:00
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+/**
+****************************************************************************************
+*
+* @file sch_alarm.h
+*
+* @brief sch_alarm main module
+*
+* Copyright (C) RivieraWaves 2009-2017
+*
+*
+****************************************************************************************
+*/
+
+#ifndef _SCH_ALARM_H_
+#define _SCH_ALARM_H_
+
+/**
+ ****************************************************************************************
+ * @addtogroup SCH
+ * @brief Entry points of the Scheduling alaram module
+ *
+ * @{
+ ****************************************************************************************
+ */
+
+#include "rwip_config.h"
+
+#include <stdint.h>               // Standard integer definitions
+#include <stdbool.h>              // Standard boolean definitions
+#include "co_list.h"              // List management functions definitions
+
+
+/*
+ * MACROS
+ ****************************************************************************************
+ */
+
+
+
+/*
+ * DEFINES
+ ****************************************************************************************
+ */
+
+
+/*
+ * DEFINITIONS
+ ****************************************************************************************
+ */
+
+/// SCH_ALARM error codes
+enum sch_alarm_error
+{
+    /// SCH_ALARM request succeed
+    SCH_ALARM_ERROR_OK                 = 0,
+    /// SCH_ALARM request rejected error
+    SCH_ALARM_ERROR_REJECTED,
+    /// SCH_ALARM element not found error
+    SCH_ALARM_ERROR_NOT_FOUND,
+    /// SCH_ALARM request rejected due to bandwidth full error
+    SCH_ALARM_ERROR_BW_FULL
+};
+
+
+/*
+ * TYPE DEFINITIONS
+ ****************************************************************************************
+ */
+
+/// Alarm element structure
+struct sch_alarm_tag
+{
+    /// List element for chaining in the Even Arbiter lists
+    struct co_list_hdr hdr;
+
+    /// Timestamp of alarm expiry (in BT half-slots and half-us)
+    rwip_tgt_timer_t   time;
+
+    /// Call back function invoked upon alarm expiry
+    void (*cb_alarm)(struct sch_alarm_tag*);
+};
+
+/*
+ * GLOBAL VARIABLE DECLARATIONS
+ ****************************************************************************************
+ */
+
+
+/*
+ * FUNCTION DECLARATIONS
+ ****************************************************************************************
+ */
+
+/**
+ ****************************************************************************************
+ * @brief Initialize the Scheduling alarm.
+ *
+ * @param[in] init_type  Type of initialization (@see enum rwip_init_type)
+ ****************************************************************************************
+ */
+void sch_alarm_init(uint8_t init_type);
+
+/**
+ ****************************************************************************************
+ * @brief Alarm interrupt handler
+ *
+ * This function is called under interrupt when an alarm is triggered.
+ *
+ ****************************************************************************************
+ */
+void sch_alarm_timer_isr(void);
+
+/**
+ ****************************************************************************************
+ * @brief Set an alarm
+ *
+ * If the alarm specify an instant in the past, the alarm is scheduled for earliest
+ * possible time.
+ *
+ * @param[in] elt      Pointer to the alarm element to be programmed
+ ****************************************************************************************
+ */
+void sch_alarm_set(struct sch_alarm_tag* elt);
+
+/**
+ ****************************************************************************************
+ * @brief Clear an alarm
+ *
+ * @param[in] elt      Pointer to the alarm element to be cleared
+ *
+ * @return 0 - no error / 1:255 - error
+ ****************************************************************************************
+ */
+uint8_t sch_alarm_clear(struct sch_alarm_tag* elt);
+
+///@} SCH_ALARM
+
+#endif // _SCH_ALARM_H_