OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [CORTEX_STM32F103_IAR/] [STM32F10xFWLib/] [src/] [stm32f10x_rtc.c] - Blame information for rev 582

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 582 jeremybenn
/******************** (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
* 04/02/2007: V0.2
9
* 02/05/2007: V0.1
10
* 09/29/2006: V0.01
11
********************************************************************************
12
* THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
13
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
14
* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
15
* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
16
* CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
17
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
18
*******************************************************************************/
19
 
20
/* Includes ------------------------------------------------------------------*/
21
#include "stm32f10x_rtc.h"
22
 
23
/* Private typedef -----------------------------------------------------------*/
24
/* Private define ------------------------------------------------------------*/
25
#define CRL_CNF_Set      ((u16)0x0010)      /* Configuration Flag Enable Mask */
26
#define CRL_CNF_Reset    ((u16)0xFFEF)      /* Configuration Flag Disable Mask */
27
#define RTC_LSB_Mask     ((u32)0x0000FFFF)  /* RTC LSB Mask */
28
#define RTC_MSB_Mask     ((u32)0xFFFF0000)  /* RTC MSB Mask */
29
#define PRLH_MSB_Mask    ((u32)0x000F0000)  /* RTC Prescaler MSB Mask */
30
 
31
/* Private macro -------------------------------------------------------------*/
32
/* Private variables ---------------------------------------------------------*/
33
/* Private function prototypes -----------------------------------------------*/
34
/* Private functions ---------------------------------------------------------*/
35
 
36
/*******************************************************************************
37
* Function Name  : RTC_ITConfig
38
* Description    : Enables or disables the specified RTC interrupts.
39
* Input          : - RTC_IT: specifies the RTC interrupts sources to be enabled
40
*                    or disabled.
41
*                    This parameter can be any combination of the following values:
42
*                       - RTC_IT_OW: Overflow interrupt
43
*                       - RTC_IT_ALR: Alarm interrupt
44
*                       - RTC_IT_SEC: Second interrupt
45
*                  - NewState: new state of the specified RTC interrupts.
46
*                    This parameter can be: ENABLE or DISABLE.
47
* Output         : None
48
* Return         : None
49
*******************************************************************************/
50
void RTC_ITConfig(u16 RTC_IT, FunctionalState NewState)
51
{
52
  /* Check the parameters */
53
  assert(IS_RTC_IT(RTC_IT));
54
  assert(IS_FUNCTIONAL_STATE(NewState));
55
 
56
  if (NewState != DISABLE)
57
  {
58
    RTC->CRH |= RTC_IT;
59
  }
60
  else
61
  {
62
    RTC->CRH &= (u16)~RTC_IT;
63
  }
64
}
65
 
66
/*******************************************************************************
67
* Function Name  : RTC_EnterConfigMode
68
* Description    : Enters the RTC configuration mode.
69
* Input          : None
70
* Output         : None
71
* Return         : None
72
*******************************************************************************/
73
void RTC_EnterConfigMode(void)
74
{
75
  /* Set the CNF flag to enter in the Configuration Mode */
76
  RTC->CRL |= CRL_CNF_Set;
77
}
78
 
79
/*******************************************************************************
80
* Function Name  : RTC_ExitConfigMode
81
* Description    : Exits from the RTC configuration mode.
82
* Input          : None
83
* Output         : None
84
* Return         : None
85
*******************************************************************************/
86
void RTC_ExitConfigMode(void)
87
{
88
  /* Reset the CNF flag to exit from the Configuration Mode */
89
  RTC->CRL &= CRL_CNF_Reset;
90
}
91
 
92
/*******************************************************************************
93
* Function Name  : RTC_GetCounter
94
* Description    : Gets the RTC counter value.
95
* Input          : None
96
* Output         : None
97
* Return         : RTC counter value.
98
*******************************************************************************/
99
u32 RTC_GetCounter(void)
100
{
101
  u16 tmp = 0;
102
  tmp = RTC->CNTL;
103
 
104
  return (((u32)RTC->CNTH << 16 ) | tmp) ;
105
}
106
 
107
/*******************************************************************************
108
* Function Name  : RTC_SetCounter
109
* Description    : Sets the RTC counter value.
110
* Input          : - CounterValue: RTC counter new value.
111
* Output         : None
112
* Return         : None
113
*******************************************************************************/
114
void RTC_SetCounter(u32 CounterValue)
115
{
116
  RTC_EnterConfigMode();
117
 
118
  /* Set RTC COUNTER MSB word */
119
  RTC->CNTH = (CounterValue & RTC_MSB_Mask) >> 16;
120
  /* Set RTC COUNTER LSB word */
121
  RTC->CNTL = (CounterValue & RTC_LSB_Mask);
122
 
123
  RTC_ExitConfigMode();
124
}
125
 
126
/*******************************************************************************
127
* Function Name  : RTC_GetPrescaler
128
* Description    : Gets the RTC prescaler value.
129
* Input          : None
130
* Output         : None
131
* Return         : RTC prescaler value.
132
*******************************************************************************/
133
u32 RTC_GetPrescaler(void)
134
{
135
  u32 tmp = 0x00;
136
 
137
  tmp = ((u32)RTC->PRLH & (u32)0x000F) << 0x10;
138
  tmp |= RTC->PRLL;
139
 
140
  return tmp;
141
}
142
 
143
/*******************************************************************************
144
* Function Name  : RTC_SetPrescaler
145
* Description    : Sets the RTC prescaler value.
146
* Input          : - PrescalerValue: RTC prescaler new value.
147
* Output         : None
148
* Return         : None
149
*******************************************************************************/
150
void RTC_SetPrescaler(u32 PrescalerValue)
151
{
152
  /* Check the parameters */
153
  assert(IS_RTC_PRESCALER(PrescalerValue));
154
 
155
  RTC_EnterConfigMode();
156
 
157
  /* Set RTC PRESCALER MSB word */
158
  RTC->PRLH = (PrescalerValue & PRLH_MSB_Mask) >> 0x10;
159
  /* Set RTC PRESCALER LSB word */
160
  RTC->PRLL = (PrescalerValue & RTC_LSB_Mask);
161
 
162
  RTC_ExitConfigMode();
163
}
164
 
165
/*******************************************************************************
166
* Function Name  : RTC_SetAlarm
167
* Description    : Sets the RTC alarm value.
168
* Input          : - AlarmValue: RTC alarm new value.
169
* Output         : None
170
* Return         : None
171
*******************************************************************************/
172
void RTC_SetAlarm(u32 AlarmValue)
173
{
174
  RTC_EnterConfigMode();
175
 
176
  /* Set the ALARM MSB word */
177
  RTC->ALRH = (AlarmValue & RTC_MSB_Mask) >> 16;
178
  /* Set the ALARM LSB word */
179
  RTC->ALRL = (AlarmValue & RTC_LSB_Mask);
180
 
181
  RTC_ExitConfigMode();
182
}
183
 
184
/*******************************************************************************
185
* Function Name  : RTC_GetDivider
186
* Description    : Gets the RTC divider value.
187
* Input          : None
188
* Output         : None
189
* Return         : RTC Divider value.
190
*******************************************************************************/
191
u32 RTC_GetDivider(void)
192
{
193
  u32 tmp = 0x00;
194
 
195
  tmp = ((u32)RTC->DIVH & (u32)0x000F) << 0x10;
196
  tmp |= RTC->DIVL;
197
 
198
  return tmp;
199
}
200
 
201
/*******************************************************************************
202
* Function Name  : RTC_WaitForLastTask
203
* Description    : Waits until last write operation on RTC registers has finished.
204
*                  This function must be called before any write to RTC registers.
205
* Input          : None
206
* Output         : None
207
* Return         : None
208
*******************************************************************************/
209
void RTC_WaitForLastTask(void)
210
{
211
  /* Loop until RTOFF flag is set */
212
  while ((RTC->CRL & RTC_FLAG_RTOFF) == (u16)RESET)
213
  {
214
  }
215
}
216
 
217
/*******************************************************************************
218
* Function Name  : RTC_WaitForSynchro
219
* Description    : Waits until the RTC registers (RTC_CNT, RTC_ALR and RTC_PRL)
220
*                  are synchronized with RTC APB clock.
221
*                  This function must be called before any read operation after
222
*                  an APB reset or an APB clock stop.
223
* Input          : None
224
* Output         : None
225
* Return         : None
226
*******************************************************************************/
227
void RTC_WaitForSynchro(void)
228
{
229
  /* Clear RSF flag */
230
  RTC->CRL &= (u16)~RTC_FLAG_RSF;
231
 
232
  /* Loop until RSF flag is set */
233
  while ((RTC->CRL & RTC_FLAG_RSF) == (u16)RESET)
234
  {
235
  }
236
}
237
 
238
/*******************************************************************************
239
* Function Name  : RTC_GetFlagStatus
240
* Description    : Checks whether the specified RTC flag is set or not.
241
* Input          : - RTC_FLAG: specifies the flag to check.
242
*                    This parameter can be one the following values:
243
*                       - RTC_FLAG_RTOFF: RTC Operation OFF flag
244
*                       - RTC_FLAG_RSF: Registers Synchronized flag
245
*                       - RTC_FLAG_OW: Overflow flag
246
*                       - RTC_FLAG_ALR: Alarm flag
247
*                       - RTC_FLAG_SEC: Second flag
248
* Output         : None
249
* Return         : The new state of RTC_FLAG (SET or RESET).
250
*******************************************************************************/
251
FlagStatus RTC_GetFlagStatus(u16 RTC_FLAG)
252
{
253
  FlagStatus bitstatus = RESET;
254
 
255
  /* Check the parameters */
256
  assert(IS_RTC_GET_FLAG(RTC_FLAG));
257
 
258
  if ((RTC->CRL & RTC_FLAG) != (u16)RESET)
259
  {
260
    bitstatus = SET;
261
  }
262
  else
263
  {
264
    bitstatus = RESET;
265
  }
266
  return bitstatus;
267
}
268
 
269
/*******************************************************************************
270
* Function Name  : RTC_ClearFlag
271
* Description    : Clears the RTC’s pending flags.
272
* Input          : - RTC_FLAG: specifies the flag to clear.
273
*                    This parameter can be any combination of the following values:
274
*                       - RTC_FLAG_RSF: Registers Synchronized flag. This flag
275
*                         is cleared only after an APB reset or an APB Clock stop.
276
*                       - RTC_FLAG_OW: Overflow flag
277
*                       - RTC_FLAG_ALR: Alarm flag
278
*                       - RTC_FLAG_SEC: Second flag
279
* Output         : None
280
* Return         : None
281
*******************************************************************************/
282
void RTC_ClearFlag(u16 RTC_FLAG)
283
{
284
  /* Check the parameters */
285
  assert(IS_RTC_CLEAR_FLAG(RTC_FLAG));
286
 
287
  /* Clear the coressponding RTC flag */
288
  RTC->CRL &= (u16)~RTC_FLAG;
289
}
290
 
291
/*******************************************************************************
292
* Function Name  : RTC_GetITStatus
293
* Description    : Checks whether the specified RTC interrupt has occured or not.
294
* Input          : - RTC_IT: specifies the RTC interrupts sources to check.
295
*                    This parameter can be one of the following values:
296
*                       - RTC_IT_OW: Overflow interrupt
297
*                       - RTC_IT_ALR: Alarm interrupt
298
*                       - RTC_IT_SEC: Second interrupt
299
* Output         : None
300
* Return         : The new state of the RTC_IT (SET or RESET).
301
*******************************************************************************/
302
ITStatus RTC_GetITStatus(u16 RTC_IT)
303
{
304
  ITStatus bitstatus = RESET;
305
 
306
  /* Check the parameters */
307
  assert(IS_RTC_GET_IT(RTC_IT));
308
 
309
  bitstatus = (ITStatus)((RTC->CRL & RTC_IT) != (u16)RESET);
310
 
311
  if (((RTC->CRH & RTC_IT) != (u16)RESET) && bitstatus)
312
  {
313
    bitstatus = SET;
314
  }
315
  else
316
  {
317
    bitstatus = RESET;
318
  }
319
  return bitstatus;
320
}
321
 
322
/*******************************************************************************
323
* Function Name  : RTC_ClearITPendingBit
324
* Description    : Clears the RTC’s interrupt pending bits.
325
* Input          : - RTC_IT: specifies the interrupt pending bit to clear.
326
*                    This parameter can be any combination of the following values:
327
*                       - RTC_IT_OW: Overflow interrupt
328
*                       - RTC_IT_ALR: Alarm interrupt
329
*                       - RTC_IT_SEC: Second interrupt
330
* Output         : None
331
* Return         : None
332
*******************************************************************************/
333
void RTC_ClearITPendingBit(u16 RTC_IT)
334
{
335
  /* Check the parameters */
336
  assert(IS_RTC_IT(RTC_IT));
337
 
338
  /* Clear the coressponding RTC pending bit */
339
  RTC->CRL &= (u16)~RTC_IT;
340
}
341
 
342
/******************* (C) COPYRIGHT 2007 STMicroelectronics *****END OF FILE****/

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.