Mercurial > public > ostc4
annotate Small_CPU/Src/rtc.c @ 328:4fe5400567e7 I2C_Improvment
Set I2C speed to 88kHz, use digital filter only and reworked idle clock recovery
The errata describes a possible problem in operation between 88kHz and 100kHz => Set speed as recommended as work around.
Based on reference implementation only one filter should be use. Choice was digital because only drawback is lag of wakeup functionality which is not used
I2C communication may be randomly interrupted e.g. by a RTE reset or firmware update => reworked recovery function to get I2C devices in idle state again (Clk and SDA HIGH)
| author | ideenmodellierer |
|---|---|
| date | Wed, 17 Jul 2019 22:42:15 +0200 |
| parents | f0069f002c55 |
| children |
| rev | line source |
|---|---|
| 38 | 1 /** |
| 2 ****************************************************************************** | |
| 3 * @file rtc.c | |
| 4 * @author heinrichs weikamp gmbh | |
| 5 * @version V0.0.1 | |
| 6 * @date 10-Oct-2014 | |
| 7 * @brief Source code for rtc control | |
| 8 * | |
| 9 @verbatim | |
| 10 ============================================================================== | |
| 11 ##### How to use ##### | |
| 12 ============================================================================== | |
| 13 @endverbatim | |
| 14 ****************************************************************************** | |
| 15 * @attention | |
| 16 * | |
| 17 * <h2><center>© COPYRIGHT(c) 2015 heinrichs weikamp</center></h2> | |
| 18 * | |
| 19 ****************************************************************************** | |
| 20 */ | |
| 21 /* Includes ------------------------------------------------------------------*/ | |
| 22 #include "rtc.h" | |
| 23 #include "stm32f4xx_hal.h" | |
| 24 #include "stm32f4xx_hal_conf.h" | |
| 25 #include "baseCPU2.h" | |
| 26 | |
| 27 RTC_HandleTypeDef RTCHandle; | |
| 28 | |
| 29 static void RTC_Error_Handler(void); | |
| 30 | |
| 31 | |
| 32 void RTC_SetTime(RTC_TimeTypeDef stimestructure) | |
| 33 { | |
| 34 | |
| 35 stimestructure.SubSeconds = 0; | |
|
232
f0069f002c55
Bugfix: make date/time setting work over reboots
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
36 stimestructure.TimeFormat = RTC_HOURFORMAT_24; |
| 38 | 37 stimestructure.DayLightSaving = RTC_DAYLIGHTSAVING_NONE ; |
| 38 stimestructure.StoreOperation = RTC_STOREOPERATION_RESET; | |
| 39 | |
| 40 if(HAL_RTC_SetTime(&RTCHandle, &stimestructure, FORMAT_BIN) != HAL_OK) | |
| 41 { | |
| 42 RTC_Error_Handler(); | |
| 43 } | |
| 44 } | |
| 45 | |
| 46 | |
| 47 void RTC_SetDate(RTC_DateTypeDef sdatestructure) | |
| 48 { | |
| 49 if(HAL_RTC_SetDate(&RTCHandle, &sdatestructure, FORMAT_BIN) != HAL_OK) | |
| 50 { | |
| 51 RTC_Error_Handler(); | |
| 52 } | |
| 53 } | |
| 54 | |
| 55 | |
| 56 /* | |
| 57 static void RTC_CalendarConfig(void) | |
| 58 { | |
| 59 RTC_DateTypeDef sdatestructure; | |
| 60 RTC_TimeTypeDef stimestructure; | |
| 61 | |
| 62 //##-1- Configure the Date ################################################# | |
| 63 // Set Date: Monday April 14th 2014 | |
| 64 sdatestructure.Year = 0; | |
| 65 sdatestructure.Month = RTC_MONTH_JANUARY; | |
| 66 sdatestructure.Date = 1; | |
| 67 sdatestructure.WeekDay = RTC_WEEKDAY_MONDAY; | |
| 68 | |
| 69 if(HAL_RTC_SetDate(&RTCHandle,&sdatestructure,FORMAT_BCD) != HAL_OK) | |
| 70 { | |
| 71 RTC_Error_Handler(); | |
| 72 } | |
| 73 | |
| 74 //##-2- Configure the Time ################################################# | |
| 75 // Set Time: 02:00:00 | |
| 76 stimestructure.Hours = 0; | |
| 77 stimestructure.Minutes = 0; | |
| 78 stimestructure.Seconds = 0; | |
| 79 stimestructure.DayLightSaving = RTC_DAYLIGHTSAVING_NONE ; | |
| 80 stimestructure.StoreOperation = RTC_STOREOPERATION_RESET; | |
| 81 | |
| 82 if(HAL_RTC_SetTime(&RTCHandle,&stimestructure,FORMAT_BCD) != HAL_OK) | |
| 83 { | |
| 84 RTC_Error_Handler(); | |
| 85 } | |
| 86 | |
| 87 //##-3- Writes a data in a RTC Backup data Register0 ####################### | |
| 88 // HAL_RTCEx_BKUPWrite(&RTCHandle,RTC_BKP_DR0,0x32F2); | |
| 89 } | |
| 90 */ | |
| 91 | |
| 92 | |
| 93 /* ##-1- Configure the RTC peripheral ####################################### | |
| 94 Configure RTC prescaler and RTC data registers | |
| 95 RTC configured as follow: | |
| 96 - Hour Format = Format 24 | |
| 97 - Asynch Prediv = Value according to source clock | |
| 98 - Synch Prediv = Value according to source clock | |
| 99 - OutPut = Output Disable | |
| 100 - OutPutPolarity = High Polarity | |
| 101 - OutPutType = Open Drain | |
| 102 */ | |
| 103 | |
| 104 | |
| 105 void MX_RTC_init(void) | |
| 106 { | |
|
232
f0069f002c55
Bugfix: make date/time setting work over reboots
Jan Mulder <jlmulder@xs4all.nl>
parents:
38
diff
changeset
|
107 /* Initialize RTC */ |
| 38 | 108 RTCHandle.Instance = RTC; |
| 109 RTCHandle.Init.HourFormat = RTC_HOURFORMAT_24; | |
| 110 RTCHandle.Init.AsynchPrediv = 127; | |
| 111 RTCHandle.Init.SynchPrediv = 255; | |
| 112 RTCHandle.Init.OutPut = RTC_OUTPUT_DISABLE; | |
| 113 RTCHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH; | |
| 114 RTCHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN; | |
| 115 HAL_RTC_Init(&RTCHandle); | |
| 116 } | |
| 117 | |
| 118 | |
| 119 void RTC_StopMode_2seconds(void) | |
| 120 { | |
| 121 /* Enable Power Control clock */ | |
| 122 __HAL_RCC_PWR_CLK_ENABLE(); | |
| 123 | |
| 124 /* Disable Wake-up timer */ | |
| 125 HAL_RTCEx_DeactivateWakeUpTimer(&RTCHandle); | |
| 126 | |
| 127 /* Enable Wake-up timer */ | |
| 128 HAL_RTCEx_SetWakeUpTimer_IT(&RTCHandle, (0x1000-1), RTC_WAKEUPCLOCK_RTCCLK_DIV16); | |
| 129 | |
| 130 /* FLASH Deep Power Down Mode enabled */ | |
| 131 HAL_PWREx_EnableFlashPowerDown(); | |
| 132 | |
| 133 /*## Enter Stop Mode #######################################################*/ | |
| 134 HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI); | |
| 135 | |
| 136 /* Configures system clock after wake-up from STOP: enable HSI, PLL and select | |
| 137 PLL as system clock source (HSI and PLL are disabled in STOP mode) */ | |
| 138 SYSCLKConfig_STOP(); | |
| 139 | |
| 140 HAL_RTCEx_DeactivateWakeUpTimer(&RTCHandle); | |
| 141 } | |
| 142 | |
| 143 | |
| 144 void RTC_Stop_11ms(void) | |
| 145 { | |
| 146 /* Disable Wake-up timer */ | |
| 147 HAL_RTCEx_DeactivateWakeUpTimer(&RTCHandle); | |
| 148 | |
| 149 /* Enable Wake-up timer */ | |
| 150 HAL_RTCEx_SetWakeUpTimer_IT(&RTCHandle, (0x18-1), RTC_WAKEUPCLOCK_RTCCLK_DIV16); | |
| 151 | |
| 152 /* FLASH Deep Power Down Mode enabled */ | |
| 153 HAL_PWREx_DisableFlashPowerDown(); | |
| 154 | |
| 155 /*## Enter Stop Mode #######################################################*/ | |
| 156 HAL_PWR_EnterSTOPMode(PWR_MAINREGULATOR_ON, PWR_STOPENTRY_WFI); | |
| 157 | |
| 158 /* Configures system clock after wake-up from STOP: enable HSI, PLL and select | |
| 159 PLL as system clock source (HSI and PLL are disabled in STOP mode) */ | |
| 160 SYSCLKConfig_STOP(); | |
| 161 | |
| 162 HAL_RTCEx_DeactivateWakeUpTimer(&RTCHandle); | |
| 163 } | |
| 164 | |
| 165 | |
| 166 static void RTC_Error_Handler(void) | |
| 167 { | |
| 168 while(1); | |
| 169 } | |
| 170 | |
| 171 | |
| 172 /************************ (C) COPYRIGHT heinrichs weikamp *****END OF FILE****/ |