The RTC_BKPXR register is for recording power off status in our board, we make 10 boards, 4 boards works and 6 boards keep reset the RTC_BKPXR during power recycle, I check the Vbat, it is 2.91 Volt after power off which is correct.I use TureStudio t...
I have been using internal rtc of stm 32 microcontroller for which i have connected external 32.768khz crystal with out load capacitors i have recording the values since three days and i have observed inaccurate time which is 43 sec faster, i was con...
Hey guys, I've been playing around with STM32F334R8 Nucleo board's USART module. As a part of it, I have written a small bare-metal code to print a character and unfortunately, my code isn't working. I am seeing junk on my putty window sometimes and ...
Posted on June 17, 2018 at 12:09I'm reading data from a UART with DMA and want to write that data to an SD card (on a F722). Since the data is much longer than my buffer, I chose circular buffer for the DMA.The problem now is that I need to save the...
Hi all,my SDRAM setup seems to work EXCEPT that I have a strange behavior:When I write any value (8, 16, 32 bit) to an address (example 0xd000004),it in fact gets written to the address - 2, in this example 0xd0000002.All written bytes are readably @...
Hi, I want to set 3 channels of adc and transfer data via dma to buffer.But I want to read randomly, sometimes only ch1, sometimes only ch3 etc. One channel at time. And fill buffer with data from one channel.Do I have to set:-adc continous - dis...
Hello i am working on stm32h743 , and in it ADC DMA stop working but when i try to start again i does't.what is the problem in it?
Hi,I want to use lfn feature in sd card and i use stm32f4 for this purpose i set _USE_LFN to 1 and _MAX_LFN to 255 . when i create the file , file is created but when i want to return file name , returns wrong.please guide me, how to return file name...
Specifically I'm looking for any app notes on using the USB s/w HAL and drivers on a STM32F7 based processor.
