STM32 MCUs Products

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stm32F769I-Disco with FreeRTOS as MSC USB Host

Posted on March 28, 2017 at 12:58Hello,i am trying to read/write to an USB-Stick thru the HS USB-Port,i setted up CubeMX with FREERTOS, USB_HOST HSIP Mass Storage Host Class, enabled FATFS on USB-Disk  and set USB_OTG_HS external Phy Host_Only (besi...

Read/write cycle life of RTC backup registers (STM32F373)

Posted on March 28, 2017 at 09:54Hi all,I'am using STM32F373 MCU, in my application, the RTC backup registers updated every 10 minutes.I know some memory cycles limit read/write cycles, Eg, Eeprom memory only allows 10000 write /read  cycles, if gre...

Please add DBGMCU_IDCODE value in system headers

Posted on March 28, 2017 at 19:51Hello,the system headers now define many bit positions in the DBGMCU_IDCODE register. However they don't define the actual value for the device. Please, add the actual value if the IDCODE in the headers, so that code...

STM32F401 on custom board. USB doesn't work

Posted on March 24, 2017 at 19:16Hi everybody,This is my first question, I really hope you can help.I soldered a STM32F401RC on my custom board and I connected it to a mini-usb plug. In particular, I connected PA9 to Vbus, PA11 (configured as USB_OT...

STM32F4 + FreeRTOS + usage fault

Posted on March 29, 2017 at 12:41FreeRTOS + STM32F4I have been hitting a usage fault with CFSR invpc bit set which according to documentation means that an error occurred returning from an exception and that the stacked pc indicates the faulting ins...

Need .dfu from IAR when mapped to the ITCM interface

Posted on March 29, 2017 at 10:32What must I do from IAR to make a file which will properly convert to a .dfu file which will burn onto my board using the DFUSE demo - realizing that we are mapped to the ICTM interface?We are using the STM32 32-bit ...

Is it possible to create an Exact 1ms wakeup period using RTC in Stm32l1 series controller? if yes, How it can be done? 

Posted on March 24, 2017 at 12:35(ref: AN4759)Configuration 1 - able to achieve ~1ms but not exactly 1 ms.Configuration 2 - not able to achieve 1 ms but successfully achieved 1s as the least period and can program in multiples of it.

STM32F105 - Create USB Virtual COM port

Posted on March 14, 2015 at 22:11Hi,I am using a Decawave EVK1000 and would like to create a USB VCOM port to my PC.I have never made a USB driver before and have downloaded the USB FS library for the STM32F105.From the library I see there is the De...

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TIMx TRGO generation

Posted on March 28, 2017 at 23:39On my '407 I am using TIM2 to trigger a series of ADC conversions. The connection between TIM2 and the ADCs is TRGO.I have set up the time base for TIM2 to be 84MHz and TIM2 has no prescaler and a counter period of 2...