STM32 MCUs Embedded software

Advice about implementing new code written with HAL into older appln written with older low level libraries (2013).

The USB device I need is working with a set of newer libraries (mxCube). All my application ported code is written with older libraries so the permutations are:A. App with older libraries combined with USB running on new libraries (lazy way, short cu...

Updating our own bootloader when the read out protection is set. Is it possible somhow to clear the Read out protection and then write a new bootloader from eiter our main firmware or maby a application in ram?

The processor is a STM32F107RB. We dont have the possiblilty to update it via jtag.

How to replace the Audio input device by SAI/I2S inside demo case 'Audio_playback_and_record' by STM32F769I-Discovery?

Hi,'Audio_playback_and_record default uses INPUT_DEVICE_DIGITAL_MIC as Audio input.I'd like to replace the Audio input by SAI's I2S with an external mic slave device.I add INPUT_DEVICE_AUDIO_I2S as new Audio output. And run the flow as INPUT_DEVICE_A...

Hi, How can we share a variable between boot loader and firmware ?

I am using STM32F030C6 micro controller. In my firmware, I need to keep a variable in RAM location 0x2000000. This variable is accessed by both boot loader and firmware. So a reset should not affect its value. So how can we declare such a variable ? ...

I choose MCU with Ethernet MAC. I previously chose STM32F107. I need 100 MB/s Ethernet (with MII interface). Please, recommend Ethernet PHY chip. TIA Sincerely Vladimir Naumenkov www.agat.by

STM32F070 bootloader

Here below image of the MCU on my two nucleo boards. I tried to program the MCUs using SMT32CubeProgrammer and USB-TTL converter connected to USART1 via pin PA9 and PA10, BOOT pin tied to 3V3. I press the reset button, then try to connect F070 MCU bu...

STM32H753 VDD33USB GPIO voltage level when not used with USB peripheral?

Section 2.1.2 of AN4938 states: If a USB interface is used (USB OTG_HS/OTG_FS), the associated GPIOspowered by VDD33USB operate between VDD33USB_MIN and VDD33USB_MAX(seeFigure 2).VDD33USB supplies both USB OTG_HS and USB OTG_FS transceivers. If onlyo...

LIBUSB_ERROR_PIPE on Read in DFU mode

I am working on a tool for embedded Linux that can update MCU firmware on a NUCLEO-L4A6ZG. I power up the MCU in DFU mode and connect using LibUsb in user mode.I get an error when a try to read from address: 0x08000000First I successfull write the ad...

HAL_ADC_Start_DMA example, always get value 0

hi guys, i'm stm freshman, I am trying to read the adc value by using the adc example of stm32f4, I added bold code to get uhADCxConvertedValue value, but uhADCxConvertedValue value always get 0 Whether I connect adc pin to grounded or vcc.the led4 ...

Burning program onto yet unused STM32 with another MCU.

I'm working on a project in which I would use another MCU to burn program onto STM32 MCU over USB, but I can't find USB bus timings anywhere. That other MCU will also have other functions. When powered on it should check sd-card for the binary file a...