init

2026-06-26 00:30:13 +02:00
commit b27cd76ca8
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+/********************************** (C) COPYRIGHT  *******************************
+ * File Name          : ch32v20x_rtc.h
+ * Author             : WCH
+ * Version            : V1.0.0
+ * Date               : 2021/06/06
+ * Description        : This file contains all the functions prototypes for the RTC
+ *                      firmware library.
+*********************************************************************************
+* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
+* Attention: This software (modified or not) and binary are used for 
+* microcontroller manufactured by Nanjing Qinheng Microelectronics.
+*******************************************************************************/
+#ifndef __CH32V20x_RTC_H
+#define __CH32V20x_RTC_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "ch32v20x.h"
+
+typedef enum
+{
+    Level_32 = 2,
+    Level_64,
+    Level_128,
+
+} Cali_LevelTypeDef;
+
+/* RTC_interrupts_define */
+#define RTC_IT_OW         ((uint16_t)0x0004) /* Overflow interrupt */
+#define RTC_IT_ALR        ((uint16_t)0x0002) /* Alarm interrupt */
+#define RTC_IT_SEC        ((uint16_t)0x0001) /* Second interrupt */
+
+/* RTC_interrupts_flags */
+#define RTC_FLAG_RTOFF    ((uint16_t)0x0020) /* RTC Operation OFF flag */
+#define RTC_FLAG_RSF      ((uint16_t)0x0008) /* Registers Synchronized flag */
+#define RTC_FLAG_OW       ((uint16_t)0x0004) /* Overflow flag */
+#define RTC_FLAG_ALR      ((uint16_t)0x0002) /* Alarm flag */
+#define RTC_FLAG_SEC      ((uint16_t)0x0001) /* Second flag */
+
+#if defined(CH32V20x_D8) || defined(CH32V20x_D8W)
+#define RB_OSC32K_HTUNE       (0x1FE0)
+#define RB_OSC32K_LTUNE       (0x1F)
+
+#define RB_OSC_CAL_HALT       (0x80)
+#define RB_OSC_CAL_EN         (0x02)
+#define RB_OSC_CAL_INT_EN     (0x01)
+
+#define RB_OSC_CAL_OV_CNT     (0xFF)
+
+#define RB_OSC_CAL_IF_END     (1 << 15)
+#define RB_OSC_CAL_CNT_OV     (1 << 14)
+#define RB_OSC_CAL_CNT        (0x3FFF)
+
+#define RB_CAL_LP_EN          (1 << 6)
+#define RB_CAL_WKUP_EN        (1 << 5)
+#define RB_OSC_HALT_MD        (1 << 4)
+#define RB_OSC_CNT_VLU        (0x0F)
+
+
+#ifdef CLK_OSC32K
+#if ( CLK_OSC32K == 1 )
+#define CAB_LSIFQ       32000
+#else
+#define CAB_LSIFQ       32768
+#endif
+#else
+#define CAB_LSIFQ       32000
+#endif
+#endif
+
+
+void       RTC_ITConfig(uint16_t RTC_IT, FunctionalState NewState);
+void       RTC_EnterConfigMode(void);
+void       RTC_ExitConfigMode(void);
+uint32_t   RTC_GetCounter(void);
+void       RTC_SetCounter(uint32_t CounterValue);
+void       RTC_SetPrescaler(uint32_t PrescalerValue);
+void       RTC_SetAlarm(uint32_t AlarmValue);
+uint32_t   RTC_GetDivider(void);
+void       RTC_WaitForLastTask(void);
+void       RTC_WaitForSynchro(void);
+FlagStatus RTC_GetFlagStatus(uint16_t RTC_FLAG);
+void       RTC_ClearFlag(uint16_t RTC_FLAG);
+ITStatus   RTC_GetITStatus(uint16_t RTC_IT);
+void       RTC_ClearITPendingBit(uint16_t RTC_IT);
+
+#if defined(CH32V20x_D8) || defined(CH32V20x_D8W)
+void Calibration_LSI(Cali_LevelTypeDef cali_Lv);
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif