STM32F4 Discovery board - Keil 5 IDE with CubeMX: Tutorial 20 - Real Time Clock (RTC) 

Mohammed keep going my brother. You are very helpful. Thank you very much!

Excellent buddy! Thanks

especially like the non cube part of the video! thanks!

Thank you for your help sir.

Thank you so much!

Did this one, did notice that the sTime, sDate, and sAlarm were local in static void MX_RTC_Init(void). You moved them as global variables and I had to do the same so you can use them outside the function. If people want to change something and regenerate the code they need to be aware the code generator will make those variables again giving you two definitions. It compiled fine but don't like the same variable in a local function and as global. I made mine static, but just for people to be aware of it. Thanks for thee tutorials, these are really helpful. I'm using a nucleo-F767ZI and the tutorials are helpful. I'm looking to possibly take your LCD driver code and make a somewhat platform independent driver for using the 16x2 LCD on not only a STM but also a Renesas eval board. Just a thought right now but it would be cool to do.

hi bro. Thank you so much.

Thank you

thanks bro

very useful

Hi yaqoob please make a series of vedios on IOT protocols(http, MQTT, TCP/IP), and wifi and Bluetooth interfacing. Thanks

Hi friend, I would like to know how to program using the standard library for STM32, rather than the HALL library?

Hello, is there any way to configure the RTCC when programming the STM32 ?, in compilers like MPLABX, we have the macros __TIME__ and __DATE__ that take the system time at compile time, and we can parsing to configure the rtcc. Thanks!

FYI Synch prediv should be set to 249 for 32k LSI

What is the lowest power mode you can put the stm32 in that keeps RTC on and it is possible to wake up the micro with external interrupt? if it is important it is for stm32L0 series. Thanks

Hello Mohamed, How can I show time on lcd screen instead of stmstudio? I have already seen your video about the lcd1602 and I have the library you shared with us. please respond me soon.

Hi Mohamed I'm using your LCD1602 library to write informations on LCD. I watched your video about RTC and I liked so much. Now i'm trying write the RTC variables like so date, month, year, hour, minute and second using your LCD1602 library. This informations are displayed on LCD, but the actualization this information don't occur. I'm using a STM32F4 Dicovery board that have a ST32F407VGT microcontroler. In this board the VBAT pin is connected to VDD 3.3V. Only to clarify, I'm using this "subvariables": sDate.Date for date sDate.Month for month sDate.Year for year sTime.Hours for hours sTime.Minutes for minute sTime.Seconds for second What I can do to solve this problem? Please, could you help me? I'm waiting your answer, thanks.

I take this video as reference to understand the concept of RTC but I wanted to know to use RTC to time stamp data...Could you guide me for this

time and date initialization in cubemx fail because you set the year wrong, it must be 0-99. it is very helpful btw

RTC gets re-initialized to old value when System Reset occurs. Have tried alternate scheme on this? Resetting the RTC: The calendar shadow registers (RTC_SSR, RTC_TR and RTC_DR) and some bits of the RTC status register (RTC_ISR) are reset to their default values by all available system reset sources. On the contrary, the following registers are resetted to their default values by a backup domain reset and are not affected by a system reset: the RTC current calendar registers, the RTC control register (RTC_CR), the prescaler register (RTC_PRER), the RTC calibration registers (RTC_CALIBR or RTC_CALR), the RTC shift register (RTC_SHIFTR), the RTC timestamp registers (RTC_TSSSR, RTC_TSTR and RTC_TSDR), the RTC tamper and alternate function configuration register (RTC_TAFCR), the RTC backup registers (RTC_BKPxR), the wakeup timer register (RTC_WUTR), the Alarm A and Alarm B registers RTC_ALRMASSR / RTC_ALRMAR and RTC_ALRMBSSR/RTC_ALRMBR).

Excellent video thank u.can I use this in shut down mode n generate alarm every 5 minute n wakeup.do u have any suggestions.

dear sir, why don't we need to call HAL_NVIC_EnableIRQ for SysTick as we do for RTC timer? Is it activated by default, or is configured somewhere else in the program? please advise. thanks.

Ok i have battery but when CPU restart . Rtc init () again. Android s.time set again value. İ font want this.

if i'm choose external crystal my controller not show the time plz help me

Good one bruv.. subscribed to ur channel.. I have a case here . Can u explain what can be done.. I need rtc to wake up at certain time and usher GSM and GPS module (which is in deep sleep) for sending data and after that it again need to go to sleep.. like @9am module should power on and send data and again goes to sleep.. repeat .

Cube mx set the timeand date for me. but STM studio doesnt show the sDate and sTime variables. Can someone help me pls? i followed the steps. thank you

RTC lagging 8sec for every 10 min, is there is any way to calibrate rtc for more accuracy

can you explain generally what is the difference if i use external clock such as ds1302? and can i add coin cel battery with internal clock? i need it for my data logger project, or you have any better option?

Hello, I have tried to implement RTC code. However my RTC doen't count. When a try to catch the RTC time he returns the same value every time

hi my friends. ı did that its work but when restart cpu , rtc start begin time.do u know how can ı do it.

I found the problem. I must call GetTime and then GetDate.

hii. i tried this but my time doesn't increments even after the subsecond are incrementing.. can u please help.?

Using a "virgin" build I get fatal errors "os_tick.h: No such file or directory" :(

mohamed where is the code why why !!