About Ben K

Ben K · 2021-11-09

Hi there!I have configured an STM32L432KC Nucleo board in STM32CubeIDE, with UART2 and TIM2 using DMA. The generated code doesn't set up these DMAs correctly. The root cause is that their MX_<peripheral>_Init() calls precede the MX_DMA1_Init(), and t...

Ben K · 2021-01-17

So I'm looking at the reference manual of STM32F723 to find out how to control the USBPHYC peripheral. Actually there is no programmer's guide in there like for most peripherals, so I can only rely on the register map to find anything out about it. T...

Ben K · 2018-05-01

Posted on May 01, 2018 at 22:20I recently started using the STM32CubeProgrammer for flashing MCUs via their DFU bootloader in the system memory. (After resolving the windows driver conflict with DfuSe, the lesson is: use Zadig instead of the batch f...

Ben K · 2017-09-27

Posted on September 27, 2017 at 13:33I am developing a complex USB device with several endpoints, I have encountered the following problem: the DataIn class callback was passing the epnum parameter incorrectly, the 0x80 flag - which indicates the en...

Ben K · 2016-03-08

Posted on March 08, 2016 at 22:21Welcome everybody, I have made some development on the CMSIS device descriptors: - The bit fields are added for each register mapping C structure, so the bit fields appear as simple variables that can be read and wr...

Ben K · 2021-01-17

One of the listed example projects has 2 HID interfaces: https://github.com/benedekkupper/DebugDongleFW But it's not really that complicated to make 2 HID interfaces with it, once you got one working, it just takes two calls of USBD_HID_MountInterfac...

Ben K · 2021-01-17

You will need https://github.com/IntergatedCircuits/HidReportDefthen use this HID report descriptor:static const uint8_t DescPlayerReport[] = { /* Consumer device as input controller */ HID_USAGE_PAGE_CONSUMER, HID_USAGE_CMR_CONSUMER_CTRL, HI...

Ben K · 2021-01-17

I believe the STM32CubeProgrammer has a command line option as well, but I can't really recall the details. I'm not using that software because it only allows to use the ROM bootloader of STM32's, unlike the DfuSeDemo. I did make my own DFU updater, ...

Ben K · 2021-01-17

Hi Yuriy,It's possible to present one USB-HID interface as multiple HID devices to the OS, by defining multiple Top Level Collections in the HID report descriptor. That means that you can concatenate the two HID report descriptors to one, ensuring th...

Ben K · 2019-11-28

The CAN1 peripheral owns all CAN receive filters of the chip, so to receive anything on CAN2 you need to assign some filters to CAN2 RX, and configure them, in the CAN1 peripheral registers.

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User Activity

STM32CubeIDE generates wrong peripheral init sequence when using DMA

STM32F723 USBPHYC LDO control documentation/HAL bug

STM32CubeProgrammer with DFU erase error

USB IN Endpoint handling bug in HAL (and Device Library)

Bit-banding and register field handling made clear and simple

Re: USB Composite HID+HID with USB-FS-Device_Driver library

Re: STM32 USB HID Keyboard implementation with Media key

Re: Using DfuSeDemo.exe and STM32CubeProgrammer with the same drivers

Re: USB Composite HID+HID with USB-FS-Device_Driver library

Re: Trying to get CAN2 working.