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lutztonineubert
Associate III
since ‎2018-07-19
‎2023-06-14

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  • 13 Posts
  • 2 Solutions
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User Activity

Timeout in RTC_INIT with HSE if an unused register does not have a unspecific entry is set!?

2020-08-06
I have an STM32F446 with a HSE attached. Everything works fine (freeRTOS, CAN, I2C, ADC).Now I want to use the RTC but I cannot initialized it if I not set PeriphClkInitStruct.PLLI2SDivQ to an unspecific value. RTC_EnterInitMode() from the HAL librar...

Memory/Instruction barriers before writing to the backup SRAM

2020-08-05
The following code didn't worked because of a missing data barrier before writing to the backup SRAM:HAL_PWR_EnableBkUpAccess(); std::copy(buffer, buffer + num_bytes, BaseAddress + address); HAL_PWR_DisableBkUpAccess();Adding a DSB, solved the issue ...

Use backup register in VBat mode and also backup SRAM but not in VBat mode

2020-06-17
Hello everyone,as the title says: Is it possible to use the backup register with an external battery so on power off the data persist. And also use the backup SRAM but on power off the battery should not be used here and all data will be lost.We woul...

FMC SRAM - Initialization parameter

2016-03-03
Posted on March 03, 2016 at 15:36 Hello ST-community, I am able to setup my external SRAM and access and test (memtest) its memory regions. It works! However, I do not know if my configurations are correct. It is hard for me to und...

Input Capture - HAL library STM32F4xx

2016-02-22
Posted on February 22, 2016 at 09:16 Hello, I want to get a frequency of an input signal using the stm32f4xx with the HAL library. Signal comes in PB4. I checked the working input with a simple gpio configuration. My following i...
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