Hi I am programming a STM32L433 and have the processor wakeup from Standby mode. The first thing it does after wakeup is check the cause of the wakeup, and if RTC increase the time, do a few readings and go back into Standby mode. When I am running ...
I have a STM32U595 with a 32.768kHz LSE oscillator.I wish to generate a 1ms/1kHz timebase with the accuracy/drift characteristics of the LSE, so naturally I went to make use of the "Hardware auto calibration with LSE (PLL-mode)" feature.Firstly, can ...
This is not true, according to RM, HSE is divided by RCC_CFGR.RTCPRE which ranges from HSE/2 to HSE/31.JW
Hi,I'm trying to improve the accuracy of RTC. For that, I use the AN2604 witch describe this.But, when I activate the calibration output of RTC at 512Hz, I have only 496Hz at the output. (AsynchPrediv =127). I tried this simple code to the nucleo-L47...
Hello everyone! I have stm32f411ceu6 dev board, and I decided to use RTC. But it's going slower than time on reference clock. I use 32768 oscillator, which is soldered on the board. Can I calibrate this thing?
Hi. I need help with RTC on STM32F103. I would like to edit the time (hours and minutes) in my RTC using a button. When I add an hour the maximum vartosc I can reach in the RTC->CNTL register is 65535 (18h20min), when this value is exceeded, the regi...
Hi, I use RTC alarm to wake up from STOP mode I have STM32F030C8T6. During initialization I have set 5s and everything works as it should. But I would need to change the interval to maybe 30s while the program is running. The problem is that the chan...
Hi all,I want to measure the power consumption on my board which has a STM32L431CC. Other than the µC, there is nothing left on the board excepted for an RC filter on the NRST pin, I removed the RTC quartz.Inspired by the example code i found, i wrot...
With reference to STM32L496xx datasheet (DS11585 rev 17) page 152 table 49, can maximum values be provided for IVDD_VBAT with RTC enabled and clocked by LSE quartz, for VBAT=3.0V and at 25°C and 55°C? (The red marked cells)
Hi, I am planning to use stm32g030f6 and also use RTC peripheral with super cap to keep date. However, this IC does not have VBAT pin. Reading datasheet said, that RTC domain can also be supplied from VDD/VDDA pin, but this means that when a voltage ...