📄 stm32f10x_rtc.lst
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# IAR ARM ANSI C/C++ Compiler V4.42A/W32 15/May/2008 12:06:32 #
# Copyright 1999-2005 IAR Systems. All rights reserved. #
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# Source file = C:\David JIANG\ST MCU\Docs\STM32\AN_JIANG\TIM #
# Encoder\example\FWLib\src\stm32f10x_rtc.c #
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C:\David JIANG\ST MCU\Docs\STM32\AN_JIANG\TIM Encoder\example\FWLib\src\stm32f10x_rtc.c
1 /******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
2 * File Name : stm32f10x_rtc.c
3 * Author : MCD Application Team
4 * Date First Issued : 09/29/2006
5 * Description : This file provides all the RTC firmware functions.
6 ********************************************************************************
7 * History:
8 * 05/21/2007: V0.3
9 * 04/02/2007: V0.2
10 * 02/05/2007: V0.1
11 * 09/29/2006: V0.01
12 ********************************************************************************
13 * THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
14 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
15 * AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
16 * INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
17 * CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
18 * INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
19 *******************************************************************************/
20
21 /* Includes ------------------------------------------------------------------*/
22 #include "stm32f10x_rtc.h"
23
24 /* Private typedef -----------------------------------------------------------*/
25 /* Private define ------------------------------------------------------------*/
26 #define CRL_CNF_Set ((u16)0x0010) /* Configuration Flag Enable Mask */
27 #define CRL_CNF_Reset ((u16)0xFFEF) /* Configuration Flag Disable Mask */
28 #define RTC_LSB_Mask ((u32)0x0000FFFF) /* RTC LSB Mask */
29 #define RTC_MSB_Mask ((u32)0xFFFF0000) /* RTC MSB Mask */
30 #define PRLH_MSB_Mask ((u32)0x000F0000) /* RTC Prescaler MSB Mask */
31
32 /* Private macro -------------------------------------------------------------*/
33 /* Private variables ---------------------------------------------------------*/
34 /* Private function prototypes -----------------------------------------------*/
35 /* Private functions ---------------------------------------------------------*/
36
37 /*******************************************************************************
38 * Function Name : RTC_ITConfig
39 * Description : Enables or disables the specified RTC interrupts.
40 * Input : - RTC_IT: specifies the RTC interrupts sources to be enabled
41 * or disabled.
42 * This parameter can be any combination of the following values:
43 * - RTC_IT_OW: Overflow interrupt
44 * - RTC_IT_ALR: Alarm interrupt
45 * - RTC_IT_SEC: Second interrupt
46 * - NewState: new state of the specified RTC interrupts.
47 * This parameter can be: ENABLE or DISABLE.
48 * Output : None
49 * Return : None
50 *******************************************************************************/
51 void RTC_ITConfig(u16 RTC_IT, FunctionalState NewState)
52 {
53 /* Check the parameters */
54 assert(IS_RTC_IT(RTC_IT));
55 assert(IS_FUNCTIONAL_STATE(NewState));
56
57 if (NewState != DISABLE)
58 {
59 RTC->CRH |= RTC_IT;
60 }
61 else
62 {
63 RTC->CRH &= (u16)~RTC_IT;
64 }
65 }
66
67 /*******************************************************************************
68 * Function Name : RTC_EnterConfigMode
69 * Description : Enters the RTC configuration mode.
70 * Input : None
71 * Output : None
72 * Return : None
73 *******************************************************************************/
74 void RTC_EnterConfigMode(void)
75 {
76 /* Set the CNF flag to enter in the Configuration Mode */
77 RTC->CRL |= CRL_CNF_Set;
78 }
79
80 /*******************************************************************************
81 * Function Name : RTC_ExitConfigMode
82 * Description : Exits from the RTC configuration mode.
83 * Input : None
84 * Output : None
85 * Return : None
86 *******************************************************************************/
87 void RTC_ExitConfigMode(void)
88 {
89 /* Reset the CNF flag to exit from the Configuration Mode */
90 RTC->CRL &= CRL_CNF_Reset;
91 }
92
93 /*******************************************************************************
94 * Function Name : RTC_GetCounter
95 * Description : Gets the RTC counter value.
96 * Input : None
97 * Output : None
98 * Return : RTC counter value.
99 *******************************************************************************/
100 u32 RTC_GetCounter(void)
101 {
102 u16 tmp = 0;
103 tmp = RTC->CNTL;
104
105 return (((u32)RTC->CNTH << 16 ) | tmp) ;
106 }
107
108 /*******************************************************************************
109 * Function Name : RTC_SetCounter
110 * Description : Sets the RTC counter value.
111 * Input : - CounterValue: RTC counter new value.
112 * Output : None
113 * Return : None
114 *******************************************************************************/
115 void RTC_SetCounter(u32 CounterValue)
116 {
117 RTC_EnterConfigMode();
118
119 /* Set RTC COUNTER MSB word */
120 RTC->CNTH = (CounterValue & RTC_MSB_Mask) >> 16;
121 /* Set RTC COUNTER LSB word */
122 RTC->CNTL = (CounterValue & RTC_LSB_Mask);
123
124 RTC_ExitConfigMode();
125 }
126
127 /*******************************************************************************
128 * Function Name : RTC_GetPrescaler
129 * Description : Gets the RTC prescaler value.
130 * Input : None
131 * Output : None
132 * Return : RTC prescaler value.
133 *******************************************************************************/
134 u32 RTC_GetPrescaler(void)
135 {
136 u32 tmp = 0x00;
137
138 tmp = ((u32)RTC->PRLH & (u32)0x000F) << 0x10;
139 tmp |= RTC->PRLL;
140
141 return tmp;
142 }
143
144 /*******************************************************************************
145 * Function Name : RTC_SetPrescaler
146 * Description : Sets the RTC prescaler value.
147 * Input : - PrescalerValue: RTC prescaler new value.
148 * Output : None
149 * Return : None
150 *******************************************************************************/
151 void RTC_SetPrescaler(u32 PrescalerValue)
152 {
153 /* Check the parameters */
154 assert(IS_RTC_PRESCALER(PrescalerValue));
155
156 RTC_EnterConfigMode();
157
158 /* Set RTC PRESCALER MSB word */
159 RTC->PRLH = (PrescalerValue & PRLH_MSB_Mask) >> 0x10;
160 /* Set RTC PRESCALER LSB word */
161 RTC->PRLL = (PrescalerValue & RTC_LSB_Mask);
162
163 RTC_ExitConfigMode();
164 }
165
166 /*******************************************************************************
167 * Function Name : RTC_SetAlarm
168 * Description : Sets the RTC alarm value.
169 * Input : - AlarmValue: RTC alarm new value.
170 * Output : None
171 * Return : None
172 *******************************************************************************/
173 void RTC_SetAlarm(u32 AlarmValue)
174 {
175 RTC_EnterConfigMode();
176
177 /* Set the ALARM MSB word */
178 RTC->ALRH = (AlarmValue & RTC_MSB_Mask) >> 16;
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