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STM32F0xx Standard Peripherals Firmware Library
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STM32F0xx_StdPeriph_Examples/RTC/RTC_TimeStamp/main.c
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00001 /** 00002 ****************************************************************************** 00003 * @file RTC/RTC_TimeStamp/main.c 00004 * @author MCD Application Team 00005 * @version V1.4.0 00006 * @date 24-July-2014 00007 * @brief Main program body 00008 ****************************************************************************** 00009 * @attention 00010 * 00011 * <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2> 00012 * 00013 * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); 00014 * You may not use this file except in compliance with the License. 00015 * You may obtain a copy of the License at: 00016 * 00017 * http://www.st.com/software_license_agreement_liberty_v2 00018 * 00019 * Unless required by applicable law or agreed to in writing, software 00020 * distributed under the License is distributed on an "AS IS" BASIS, 00021 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00022 * See the License for the specific language governing permissions and 00023 * limitations under the License. 00024 * 00025 ****************************************************************************** 00026 */ 00027 00028 /* Includes ------------------------------------------------------------------*/ 00029 #include "main.h" 00030 00031 /** @addtogroup STM32F0xx_StdPeriph_Examples 00032 * @{ 00033 */ 00034 00035 /** @addtogroup RTC_TimeStamp 00036 * @{ 00037 */ 00038 00039 /* Private typedef -----------------------------------------------------------*/ 00040 /* Private define ------------------------------------------------------------*/ 00041 /* Private macro -------------------------------------------------------------*/ 00042 /* Private variables ---------------------------------------------------------*/ 00043 uint32_t AsynchPrediv = 0, SynchPrediv = 0; 00044 uint32_t Secondfraction = 0; 00045 __IO uint8_t Button_State = 0; 00046 /* Private function prototypes -----------------------------------------------*/ 00047 static void RTC_Time_display(uint8_t Line,__IO uint16_t Color_x, Table_TypeDef table); 00048 static Table_TypeDef RTC_Get_Time(uint32_t Secondfraction , RTC_TimeTypeDef* RTC_TimeStructure); 00049 static Table_TypeDef RTC_Get_Date(RTC_DateTypeDef* RTC_DateStructure ); 00050 static void RTC_Config(void); 00051 static void RTC_TimeRegulate(void); 00052 static void RTC_TimeShow(void); 00053 static void RTC_DateShow(void); 00054 static void RTC_TimeStampShow(void); 00055 00056 /* Private functions ---------------------------------------------------------*/ 00057 00058 /** 00059 * @brief Main program 00060 * @param None 00061 * @retval None 00062 */ 00063 int main(void) 00064 { 00065 /*!< At this stage the microcontroller clock setting is already configured, 00066 this is done through SystemInit() function which is called from startup 00067 file (startup_stm32f4xx.s) before to branch to application main. 00068 To reconfigure the default setting of SystemInit() function, refer to 00069 system_stm32f4xx.c file 00070 */ 00071 #if defined (RTC_CLOCK_SOURCE_LSI) 00072 /* Enable the LSI OSC */ 00073 RCC_LSICmd(ENABLE); 00074 #endif /* RTC_CLOCK_SOURCE_LSI */ 00075 00076 /* Configure the external interrupt "WAKEUP" and "TAMPER" buttons */ 00077 STM_EVAL_PBInit(BUTTON_TAMPER , BUTTON_MODE_EXTI); 00078 STM_EVAL_PBInit(BUTTON_SEL , BUTTON_MODE_EXTI); 00079 00080 /* Configure LEDs */ 00081 STM_EVAL_LEDInit(LED1); 00082 STM_EVAL_LEDInit(LED2); 00083 STM_EVAL_LEDOn(LED1); 00084 00085 /* Initialize the LCD */ 00086 #ifdef USE_STM320518_EVAL 00087 STM320518_LCD_Init(); 00088 #else 00089 STM32072B_LCD_Init(); 00090 #endif /* USE_STM320518_EVAL */ 00091 00092 /* Clear the LCD */ 00093 LCD_Clear(White); 00094 00095 /* Enable The Display */ 00096 LCD_DisplayOn(); 00097 00098 /* Set the LCD Back Color and Text Color*/ 00099 LCD_SetBackColor(Blue); 00100 LCD_SetTextColor(White); 00101 00102 00103 LCD_DisplayStringLine(LCD_LINE_0,(uint8_t *) " TimeStamp Example " ); 00104 00105 /* Set the LCD Text size */ 00106 LCD_SetFont(&Font16x24); 00107 00108 if (RTC_ReadBackupRegister(RTC_BKP_DR0) != 0x32F2) 00109 { 00110 /* RTC configuration */ 00111 RTC_Config(); 00112 00113 /* Configure the time&date register */ 00114 RTC_TimeRegulate(); 00115 00116 /* Display the Date */ 00117 RTC_DateShow(); 00118 00119 /* Display the Time */ 00120 RTC_TimeShow(); 00121 00122 } 00123 else 00124 { 00125 /* Check if the Power On Reset flag is set */ 00126 if (RCC_GetFlagStatus(RCC_FLAG_PORRST) != RESET) 00127 { 00128 /* Set the Back Color */ 00129 LCD_SetBackColor(LCD_COLOR_CYAN); 00130 00131 /* Set the Text Color */ 00132 LCD_SetTextColor(LCD_COLOR_BLACK); 00133 LCD_SetFont(&Font12x12); 00134 LCD_DisplayStringLine(LCD_LINE_2,(uint8_t *) " Power On Reset occurred " ); 00135 } 00136 /* Check if the Pin Reset flag is set */ 00137 else if (RCC_GetFlagStatus(RCC_FLAG_PINRST) != RESET) 00138 { 00139 /* Set the Back Color */ 00140 LCD_SetBackColor(LCD_COLOR_CYAN); 00141 00142 /* Set the Text Color */ 00143 LCD_SetTextColor(LCD_COLOR_BLACK); 00144 LCD_SetFont(&Font12x12); 00145 LCD_DisplayStringLine(LCD_LINE_2,(uint8_t *) " External Reset occurred " ); 00146 } 00147 00148 /* Set the Back Color */ 00149 LCD_SetBackColor(LCD_COLOR_CYAN); 00150 00151 /* Set the Text Color */ 00152 LCD_SetTextColor(LCD_COLOR_BLACK); 00153 LCD_SetFont(&Font12x12); 00154 LCD_DisplayStringLine(LCD_LINE_3,(uint8_t *) " No need to configure RTC " ); 00155 00156 /* Enable the PWR clock */ 00157 RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); 00158 00159 /* Allow access to RTC */ 00160 PWR_BackupAccessCmd(ENABLE); 00161 00162 /* Wait for RTC APB registers synchronisation */ 00163 RTC_WaitForSynchro(); 00164 00165 /* Clear the RTC Alarm Flag */ 00166 RTC_ClearFlag(RTC_FLAG_ALRAF); 00167 00168 /* Clear the EXTI Line 17 Pending bit (Connected internally to RTC Alarm) */ 00169 EXTI_ClearITPendingBit(EXTI_Line17); 00170 00171 /* Display the RTC Time/Date and TimeStamp Time/Date */ 00172 RTC_DateShow(); 00173 RTC_TimeShow(); 00174 00175 } 00176 00177 while (1) 00178 { 00179 if (Button_State == TAMPER_ON) 00180 { 00181 /* Turn LED4 ON */ 00182 STM_EVAL_LEDOn(LED2); 00183 LCD_SetFont(&Font12x12); 00184 LCD_DisplayStringLine(LCD_LINE_5,(uint8_t *) " TimeStamp Event Occurred " ); 00185 LCD_SetFont(&Font16x24); 00186 LCD_ClearLine(LCD_LINE_4); 00187 LCD_ClearLine(LCD_LINE_5); 00188 LCD_ClearLine(LCD_LINE_6); 00189 LCD_ClearLine(LCD_LINE_7); 00190 LCD_ClearLine(LCD_LINE_8); 00191 /* Display the TimeStamp */ 00192 RTC_TimeStampShow(); 00193 Button_State = 0; 00194 } 00195 else if (Button_State == SEL_ON) 00196 { 00197 /* Turn LED1 ON and LED2 OFF */ 00198 STM_EVAL_LEDOn(LED1); 00199 STM_EVAL_LEDOff(LED2); 00200 00201 /* Clear The TSF Flag (Clear TimeStamp Registers) */ 00202 RTC_ClearFlag(RTC_FLAG_TSF); 00203 LCD_SetFont(&Font12x12); 00204 LCD_ClearLine(LCD_LINE_5); 00205 LCD_SetFont(&Font12x12); 00206 LCD_DisplayStringLine(LCD_LINE_5,(uint8_t *) " TimeStamp Event Cleared " ); 00207 Button_State = 0; 00208 } 00209 } 00210 } 00211 00212 /** 00213 * @brief Configure the RTC peripheral by selecting the clock source. 00214 * @param None 00215 * @retval None 00216 */ 00217 static void RTC_Config(void) 00218 { 00219 RTC_InitTypeDef RTC_InitStructure; 00220 00221 /* Enable the PWR clock */ 00222 RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); 00223 00224 /* Allow access to RTC */ 00225 PWR_BackupAccessCmd(ENABLE); 00226 00227 RCC_BackupResetCmd(ENABLE); 00228 RCC_BackupResetCmd(DISABLE); 00229 00230 #if defined (RTC_CLOCK_SOURCE_LSE) /* LSE used as RTC source clock */ 00231 /* Enable the LSE OSC */ 00232 RCC_LSEConfig(RCC_LSE_ON); 00233 00234 /* Wait till LSE is ready */ 00235 while(RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET) 00236 { 00237 } 00238 00239 /* Select the RTC Clock Source */ 00240 RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE); 00241 /* ck_spre(1Hz) = RTCCLK(LSE) /(AsynchPrediv + 1)*(SynchPrediv + 1)*/ 00242 SynchPrediv = 0xFF; 00243 AsynchPrediv = 0x7F; 00244 00245 #elif defined (RTC_CLOCK_SOURCE_LSI) /* LSI used as RTC source clock*/ 00246 /* The RTC Clock may varies due to LSI frequency dispersion. */ 00247 /* Enable the LSI OSC */ 00248 RCC_LSICmd(ENABLE); 00249 00250 /* Wait till LSI is ready */ 00251 while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET) 00252 { 00253 } 00254 00255 /* Select the RTC Clock Source */ 00256 RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI); 00257 00258 /* ck_spre(1Hz) = RTCCLK(LSI) /(AsynchPrediv + 1)*(SynchPrediv + 1)*/ 00259 SynchPrediv = 0xFF; 00260 AsynchPrediv = 0x7F; 00261 00262 #else 00263 #error Please select the RTC Clock source inside the main.c file 00264 #endif /* RTC_CLOCK_SOURCE_LSE */ 00265 00266 /* Configure the RTC data register and RTC prescaler */ 00267 RTC_InitStructure.RTC_AsynchPrediv = AsynchPrediv; 00268 RTC_InitStructure.RTC_SynchPrediv = SynchPrediv; 00269 RTC_InitStructure.RTC_HourFormat = RTC_HourFormat_24; 00270 00271 /* Check on RTC init */ 00272 if (RTC_Init(&RTC_InitStructure) == ERROR) 00273 { 00274 /* Set the Back Color */ 00275 LCD_SetBackColor(LCD_COLOR_WHITE); 00276 00277 /* Set the Text Color */ 00278 LCD_SetTextColor(LCD_COLOR_RED); 00279 LCD_SetFont(&Font12x12); 00280 LCD_DisplayStringLine(LCD_LINE_3,(uint8_t *) " RTC Prescaler Conf failed " ); 00281 LCD_SetFont(&Font16x24); 00282 } 00283 00284 /* Enable the RTC Clock */ 00285 RCC_RTCCLKCmd(ENABLE); 00286 00287 /* Wait for RTC APB registers synchronisation */ 00288 RTC_WaitForSynchro(); 00289 00290 /* Enable The TimeStamp */ 00291 RTC_TimeStampCmd(RTC_TimeStampEdge_Falling, ENABLE); 00292 } 00293 00294 /** 00295 * @brief Returns the time entered by user, using Hyperterminal. 00296 * @param None 00297 * @retval None 00298 */ 00299 static void RTC_TimeRegulate(void) 00300 { 00301 RTC_TimeTypeDef RTC_TimeStructure; 00302 RTC_DateTypeDef RTC_DateStructure; 00303 00304 /* Set Time hh:mm:ss */ 00305 RTC_TimeStructure.RTC_H12 = RTC_H12_AM; 00306 RTC_TimeStructure.RTC_Hours = 0x08; 00307 RTC_TimeStructure.RTC_Minutes = 0x10; 00308 RTC_TimeStructure.RTC_Seconds = 0x00; 00309 RTC_SetTime(RTC_Format_BCD, &RTC_TimeStructure); 00310 00311 /* Set Date Week/Date/Month/Year */ 00312 RTC_DateStructure.RTC_WeekDay = 01; 00313 RTC_DateStructure.RTC_Date = 0x31; 00314 RTC_DateStructure.RTC_Month = 0x12; 00315 RTC_DateStructure.RTC_Year = 0x12; 00316 RTC_SetDate(RTC_Format_BCD, &RTC_DateStructure); 00317 00318 /* Write BkUp DR0 */ 00319 RTC_WriteBackupRegister(RTC_BKP_DR0, 0x32F2); 00320 } 00321 00322 /** 00323 * @brief Display the current time on the Hyperterminal. 00324 * @param None 00325 * @retval None 00326 */ 00327 static void RTC_TimeShow(void) 00328 { 00329 RTC_TimeTypeDef RTC_TimeStructure; 00330 /* Get the current Time and Date */ 00331 RTC_GetTime(RTC_Format_BCD, &RTC_TimeStructure); 00332 00333 /* Set the Back Color */ 00334 LCD_SetBackColor(LCD_COLOR_WHITE); 00335 00336 /* Set the Text Color */ 00337 LCD_SetTextColor(LCD_COLOR_BLUE); 00338 LCD_SetFont(&Font16x24); 00339 LCD_DisplayStringLine(LCD_LINE_4, (uint8_t *)"Current Time Display"); 00340 /* Display the curent time and the sub second on the LCD */ 00341 RTC_Time_display(LCD_LINE_5, Black , RTC_Get_Time(Secondfraction , &RTC_TimeStructure)); 00342 } 00343 00344 /** 00345 * @brief Display the current date on the Hyperterminal. 00346 * @param None 00347 * @retval None 00348 */ 00349 static void RTC_DateShow(void) 00350 { 00351 RTC_DateTypeDef RTC_DateStructure; 00352 /* Get the current Date */ 00353 RTC_GetDate(RTC_Format_BCD, &RTC_DateStructure); 00354 /* Set the Back Color */ 00355 LCD_SetBackColor(LCD_COLOR_WHITE); 00356 00357 /* Set the Text Color */ 00358 LCD_SetTextColor(LCD_COLOR_BLUE); 00359 LCD_SetFont(&Font16x24); 00360 LCD_DisplayStringLine(LCD_LINE_6, (uint8_t *)"Current Date Display"); 00361 /* Set the Text Color */ 00362 LCD_SetTextColor(LCD_COLOR_BLACK); 00363 RTC_Time_display( LCD_LINE_7, Black, RTC_Get_Date( &RTC_DateStructure)); 00364 } 00365 00366 /** 00367 * @brief Display the current TimeStamp (time and date) on the Hyperterminal. 00368 * @param None 00369 * @retval None 00370 */ 00371 static void RTC_TimeStampShow(void) 00372 { 00373 RTC_TimeTypeDef RTC_TimeStampStructure; 00374 RTC_DateTypeDef RTC_TimeStampDateStructure; 00375 /* Get the current TimeStamp */ 00376 RTC_GetTimeStamp(RTC_Format_BCD, &RTC_TimeStampStructure, &RTC_TimeStampDateStructure); 00377 00378 /* Set the Back Color */ 00379 LCD_SetBackColor(LCD_COLOR_WHITE); 00380 00381 /* Set the Text Color */ 00382 LCD_SetTextColor(LCD_COLOR_BLUE); 00383 LCD_SetFont(&Font16x24); 00384 LCD_DisplayStringLine(LCD_LINE_4, (uint8_t *)"TimeStamp Display"); 00385 /* Display the curent time and the sub second on the LCD */ 00386 LCD_DisplayStringLine(LCD_LINE_5, (uint8_t *) "Time"); 00387 RTC_Time_display(LCD_LINE_5, Black , RTC_Get_Time(Secondfraction , &RTC_TimeStampStructure)); 00388 /* Set the Text Color */ 00389 LCD_SetTextColor(LCD_COLOR_BLUE); 00390 LCD_DisplayStringLine(LCD_LINE_6, (uint8_t *) "Date"); 00391 RTC_Time_display(LCD_LINE_6, Black, RTC_Get_Date( &RTC_TimeStampDateStructure)); 00392 } 00393 00394 /** 00395 * @brief Displays the current Time on the LCD. 00396 * @param Line: the Line where to display the Current time . 00397 * This parameter can be one of the following values: 00398 * @arg Linex: where x can be 0..9 00399 * @param Color_x: specifies the Background Color. 00400 * @param table: the Current time and sub second. 00401 * @retval None 00402 */ 00403 static void RTC_Time_display(uint8_t Line,__IO uint16_t Color_x, Table_TypeDef table ) 00404 { 00405 uint8_t i = 0; 00406 00407 /* Initialize table */ 00408 LCD_SetTextColor(Color_x); 00409 00410 for (i=0;i<8;i++) 00411 { 00412 /* Display char on the LCD */ 00413 LCD_DisplayChar(Line, (250 - (20 *i)), table.tab[i]); 00414 } 00415 } 00416 00417 /** 00418 * @brief Returns the current time and sub second. 00419 * @param Secondfraction: the sub second fraction. 00420 * @param RTC_TimeStructure : pointer to a RTC_TimeTypeDef structure that 00421 * contains the current time values. 00422 * @retval table : return current time and sub second in a table form 00423 */ 00424 static Table_TypeDef RTC_Get_Time(uint32_t Secondfraction , RTC_TimeTypeDef* RTC_TimeStructure ) 00425 { 00426 Table_TypeDef table2; 00427 00428 /* Fill the table2 fields with the current Time*/ 00429 table2.tab[0] = (((uint8_t)(RTC_TimeStructure->RTC_Hours & 0xF0) >> 0x04) + 0x30); 00430 table2.tab[1] = (((uint8_t)(RTC_TimeStructure->RTC_Hours & 0x0F))+ 0x30); 00431 table2.tab[2] = 0x3A; 00432 00433 table2.tab[3] = (((uint8_t)(RTC_TimeStructure->RTC_Minutes & 0xF0) >> 0x04) + 0x30); 00434 table2.tab[4] =(((uint8_t)(RTC_TimeStructure->RTC_Minutes & 0x0F))+ (uint8_t)0x30); 00435 table2.tab[5] = 0x3A; 00436 00437 table2.tab[6] = (((uint8_t)(RTC_TimeStructure->RTC_Seconds & 0xF0) >> 0x04)+ 0x30); 00438 table2.tab[7] = (((uint8_t)(RTC_TimeStructure->RTC_Seconds & 0x0F)) + 0x30); 00439 table2.tab[8] = 0xA0; 00440 00441 /* return table2 */ 00442 return table2; 00443 } 00444 00445 /** 00446 * @brief Returns the current time and sub second. 00447 * @param Secondfraction: the sub second fraction. 00448 * @param RTC_TimeStructure : pointer to a RTC_TimeTypeDef structure that 00449 * contains the current time values. 00450 * @retval table : return current time and sub second in a table form 00451 */ 00452 static Table_TypeDef RTC_Get_Date(RTC_DateTypeDef* RTC_DateStructure ) 00453 { 00454 Table_TypeDef table2; 00455 00456 /* Fill the table2 fields with the current Time*/ 00457 table2.tab[0] = (((uint8_t)(RTC_DateStructure->RTC_Date & 0xF0) >> 0x04) + 0x30); 00458 table2.tab[1] = (((uint8_t)(RTC_DateStructure->RTC_Date & 0x0F))+ 0x30); 00459 table2.tab[2] = 0x2F; 00460 00461 table2.tab[3] = (((uint8_t)(RTC_DateStructure->RTC_Month & 0xF0) >> 0x04) + 0x30); 00462 table2.tab[4] =(((uint8_t)(RTC_DateStructure->RTC_Month & 0x0F))+ (uint8_t)0x30); 00463 table2.tab[5] = 0x2F; 00464 00465 table2.tab[6] = (((uint8_t)(RTC_DateStructure->RTC_Year & 0xF0) >> 0x04)+ 0x30); 00466 table2.tab[7] = (((uint8_t)(RTC_DateStructure->RTC_Year & 0x0F)) + 0x30); 00467 table2.tab[8] = 0xA0; 00468 00469 /* return table2 */ 00470 return table2; 00471 } 00472 00473 #ifdef USE_FULL_ASSERT 00474 00475 /** 00476 * @brief Reports the name of the source file and the source line number 00477 * where the assert_param error has occurred. 00478 * @param file: pointer to the source file name 00479 * @param line: assert_param error line source number 00480 * @retval None 00481 */ 00482 void assert_failed(uint8_t* file, uint32_t line) 00483 { 00484 /* User can add his own implementation to report the file name and line number, 00485 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ 00486 00487 /* Infinite loop */ 00488 while (1) 00489 { 00490 } 00491 } 00492 #endif 00493 00494 /** 00495 * @} 00496 */ 00497 00498 /** 00499 * @} 00500 */ 00501 00502 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/