STM32 MCUs Embedded software

Hello.I'm trying to design an RF controller for a drone with STM32F103RBT using FREERTOS CMSIS_V2.The idea is: I have a hardware with some potentiometers, joysticks etc connected to the ADC channels. I have an NRF24L01 as RF transmitter using SPI communication. Finally I wanted to display the data on an OLED display using I2C.The ADC is triggered using a Timer with 1ms sampling time and the values are stored using DMA.I have 3 tasks and 2 queues.Task1 : filters the 6 ADC values, and puts them in the queues - this is tested, and it's working as intended.Task2: reads the 6 values from queue 1 serialises the data and pushed it to the RF module using SPI.Task3: reads the 6 values from queue 2 bulds the strings and pushes the values to the OLED.The communication is working. The threads are working as expected. The problem is with the queues.Suppose that I put the array {123, 123, 0, 175, 125, 125} into th

Hi!I'm using CubeMX USB DFU bootloader on STM32F103C8T6 chip. For some reasone example takes itself 48 kB of flash, but don't use even half of it.So i changed USBD_DFU_APP_DEFAULT_ADD from 0x0800C000 to 0x08008000 and changed FLASH_DESC_STR  to  "@Internal Flash /0x08000000/02*016Ka,02*016Kg"After that i tried to upload my firmware to 0x08008000 with dfu-util. And saw FFs up to adress 0x0800C000 and after that end part of firmware. Seems like ST's example for same reason locks flash up to 0x0800C000. But DfuSeDemo app can upload dfu-file to adress 0x08008000 without any problems.Did't someone come by this problem? 

Is it hard to migrate the code of, for example, this project to a F7 board?https://github.com/MrBlueXav/Dekrispator_v2

Continuous transmission of data of tx rate 500 samples per seconds(33 bytes per sample) using USB virtual com port(USB CDC).USB mode - full speedTransmit data to serial monitor using function CDC_Transmit_FS();Received data on serial monitor is corrupted data, and this data corruption is not regular.To solve this problem - check the status of CDC_Transmit_FS() who check the state of variable(hcdc->TxState )send data after multiples of 1millisecond window.Set/reset flag continuous in CDC_TransmitCplt_FS() function.

I cannot run bootloader + Main App with FreeRTOS(CMSIS).I can build and run bootloader(Flash Addr=0x8000000, Size>8KB) + Main App(Flash Addr=0x8002000, Size120KB, no FreeRTOS) I refered these pages, https://github.com/darkspr1te/stm32f107vc_sd_bootloader https://lipoyang.hatenablog.com/entry/20171229/p1But now I'm using FreeRTOS(CMSIS) with STM Cube IDE.I cannot boot and run Main App(Flash Addr=0x8002000, Size120KB, using FreeRTOS[CMSIS])Maybe I must set memory setting for FreeRTOS[CMSIS]. But I dont know how to change adress setting.Please tell me and give me some advices.

Hello,In Section 36. I2S Generic Driver of HAL document (UM1725), I found an incorrect or misleading explanation.In the explanation of HAL_I2S_Transmit, there is a "notes" below.-----------------HAL_I2S_Transmit (I2S_HandleTypeDef * hi2s, uint16_t * pData, uint16_t Size, uint32_t Timeout)Notes: When a 16-bit data frame or a 16-bit data frame extended is selected during the I2S configuration phase, the Size parameter means the number of 16-bit data length in the transaction and when a 24-bit data frame or a 32-bit dataframe is selected the Size parameter means the number of 16-bit data length.-----------------(Same explanation is shown many times in the source code of stm32f4xx_hal_i2s.c.) However, Code is implemented as below. if ((tmpreg_cfgr == I2S_DATAFORMAT_24B) || (tmpreg_cfgr == I2S_DATAFORMAT_32B)) { hi2s->TxXferSize = (Size

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When I try to using STM32CubeMonitor-UCPD software with X-CUBE-USB-PD and ON-FUSB3-STM32, VCP does not appear on the laptop. I cannot see any connected board on the software.I already installed STM32CubeMonitor-UCPD and USB driver for ST-LINK.And, downloaded X-CUBE-USB-PD project on ON-FUSB3-STM32.Is there any required modification on X-CUBE-USB-PD project? for using STM32CubeMonitor-UCPD with ON-FUSB3-STM32.

Hi all. I am working on a project that consist of 3 separate codes. One is bootloader, another is static code and the last one is updatable code. They all share one flash. Static code only fulfills basic tasks and updatable code is more sophisticated but it is more open to bugs. Normally updatable code runs on MCU and I update it according to feedbacks. But sometimes bugs are occurring in updatable code, than I command MCU to branch static code until I solve bugs in updatable code.This 3 separate codes are using same protocol to communicate and the communication functions occupies a lot of flash space. What I want to ask is, is there a way to place communication functions in flash not for every code and just for one time? Is there any example, application note or a source about that subject?

I am trying to develop external flash loader, which will use the cubeprogrammer utility, I am facing the following error, 1) When I try to use cubeide for the project, If I remove the main and made necessary changes in startup.s and in linker, getting the following linker error "./arm-none-eabi/lib/crt0.o: In function `_start'"2) When I try to use the atollocstudio, I am able to compile and run in target but the processor resets on executing the following line of HAL Init SystemCoreClock = HAL_RCC_GetSysClockFreq() >> ((D1CorePrescTable[(RCC->D1CFGR & RCC_D1CFGR_D1CPRE)>> RCC_D1CFGR_D1CPRE_Pos]) & 0x1FU);Same code when ran from Flash memory executes without any issues.3) Also I found that when I moved all the programs to RAM then the ISR's are being hit, the same code executing from flash works without any issues.

Here's what I've done so far:1. Downloaded file STM32F411DISC-20200902-v1.13(2).dfu from MicroPython.org2. Downloaded DfuSe utility en.stsw-stm32080 and ran program DfuSe_Demo_v3.0.6_Setup3. Powered up board by connecting mini connector to a USB port on my Win10 PC4. 4 LEDs are blinking in a rotating mode followed by all flashing, then repeating5. Device Manager shows STM STLink under Universal Serial Bus Devices6. Next powered down and installed jumper on Boot0 pin to Vdd pin7. Powered up again, Device Manager still shows STM STLink8. Connected micro connector to another USB port. Red LED glows next to micro connector9. DfuSe_Demo_v3.0.6_Setup is running but nothing shows in Available DFU Devices box10. I select Choose and open file STM32F411DISC-20200902-v1.13(2).dfu11. Still nothing in Available DFU Devices box12. Hit Upgrade and a message appears in bottom line "Please select one or several

HiI noticed on my STM32G071.. that the "LL_mDelay(1000)" function did not produce a steady 1000ms delay if I vary the HCLK frequency (code generated by CubeIDE)...I did not have this problem with other MCUs code generated, it worked out of the box (F103/F407).Then I stumbled upon the "LL_Init1msTick(uint32_t HCLKFrequency)" function which seemed to have solved my problem.But what is the proper (dynamic) way to get the HCLK frequency for the function?I currently use this in my main.c: /* USER CODE BEGIN SysInit */ LL_Init1msTick(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq())); /* USER CODE END SysInit */This seems to pass a valid HCLK to the function. But CubeIDE tells me a warning that:../Core/Src/main.c: In function 'main': ../Core/Src/main.c:85:18: warning: implicit declaration of function 'RCC_GetHCLKClockFreq'; did you mean 'LL_RCC_GetCECClockFreq'? [-Wimplicit-function-declaration] LL_Ini

The function int32_t BSP_SD_Init(uint32_t Instance) (which I believe is the first thing to call to initialise access to the SD card on the STM32H747 Disco board) attempts to check if card detected on line 160. However the pin that is used as card detect isn't initialised until line 177,      SD_MspInit(&hsd_sdmmc[Instance]). As it happens it doesn't really matter as the card is detected as present with the default setting for this pin (PI8) and the initialisation proceeds!

Posted on October 10, 2014 at 04:04Hi,Ideally, I'd like to have a firmware that has the following support: Cube-basedWorks in STM32F4Works as a dual-mode USB Device (not Host) in Audio Device Class, where these 2 endpoints are configured: (a) 1 isochronous IN endpoint to handle audio coming from a host PC (to act as speaker)(b) 1 isochronous OUT endpoint to handle audio coming out to a host PC (to act as microphone)I already have a firmware that satisfies (1), (2) and (3.a) which is described in another /public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/Flat.aspx?RootFolder=https%3a//my.st.com/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/STM32F4Discovery%20Cube-based%20USB%20Speaker%20application%20not%20working&FolderCTID=0x01200200770978C69A1141439FE559EB459D7580009C4E14902C3CDE46A77F0FFD06506F5B&currentviews=116, but I'm having pro

The eaxample of dfu mode stm32l152 not run !!!These are my step :I build and execute code via IAR on Nucle0l152 board with usb _CN1 cable .Then i dsconnected CN1 usb cable and i connected my USB cabel to PA11, PA12 , gnd and 5 v .Then I open Open "DfuSe Demo" and download the "STM32L152xE_NUCLEO_SysTick_0x08007000.dfu" provided in Binary directory.Then I upload the file.dfu .Then i pressed reset on the board but led LD2 NOT BLINKING!!WHY Can help me .Thanks .Francy

I've got an audio codec chip with bidirectional i2s interface, but I can't find any examples or any other info on configuring bidirectional i2s through SAI and HAL in stm32 microcontrollers. I am able to configure single-direction i2s just fine. How do I configure the full duplex mode?

Hello, I am an engineering student who has just begun working on a CubeSat project for my design class. We are working on the OBC, specifically looking at developing a bootloader at this time. The OBC components have been selected by previous teams and an outside resource we are having trouble reaching. We have been provided with a prototype board which contains 2 microcontrollers. Primary MCU: STM32F429ZIT6USecondary MCU: STM32F103CBT6Updates will be sent by UHF and received by the secondary MCU which is supposed to then update the primary, as long as the transmission was successful. As I mentioned earlier, the resource that previous teams had to help select the components and layout of the board is no longer reachable, so I was hoping I could get some advice/documents to move forward with bootloader development on here. I would also like to note that I am a 3rd year engineering student with limited exposure to programming, as most of our classes

Hello,after programming the code via the OnBoard ST-Link and connecting/disconencting USB on the Device side in order to find out if the works, I can no longer access the microcontroller.I have no idea what the rootcause is, 3.3V is fine. Could it be that the MCU is stuck in a lowpower mode(I did not configure any).Thanks a lot.Best Regards, Seppel 

So the Blue Pill guy checks almost all the boxes for a new project I'm working on soon. 3 UARTS, M3, 72MHz, USB device, cheap, powerful *but* I'm not clear on the "fix" for being able to re-enumerate my device on USB. I must be able to change device types under firmware control (host re-enumerates device from say CDC to MSD or whatever). I've seen comments about workarounds and adding external transistors, but I don't know really how to do it. So, any pointers please. Alternatively, I could use something newer if it checks all the same boxes (not substantially slower for instance) and is within $1USD of the F103 at 1k quantities. Recommendations? I have spent way too long on the Product Selector that I feel I need human input here. I don't need low power, FPU, DSP, but if they are there that's fine.Thanks!

I want to use the bootloader feature (via UART) of the STM32L071RB. I have read the AN2606 and AN3155.If I'm right, the STM32L071RB has a V11.x bootloader and can be updated via UARTx, SPIx,and I2Cx.Is is possible to configure, which pins are used by STM-Bootloader?I only want UART1 pins (PA9, PA10) to be "active" during bootloader.Is there something like a "fuse-byte" which chooses the "active" interfaces?Or do I really have to take care that all bootloader-pins (especially the outputs of SPI1 SPI2, UART2-Tx) do not collide with peripherals connected to these pins?Best regards

Hi,My software sends a CDC bootload flag that asks the MCU to do a bootloader jump. The jumps works fine and I have no problem detecting the device change, in "control printers" on my PC (CDC to DFU). But on my collegue's PC his Windows does not see the device change so it doesnt find any DFU device. I have closed the connection before jumping as described in USB CDC doc :Any ideas to solve the problem ? I would prefer a MCU solution but I could use a software solutionRegards

I followed the custom hid example and finally got it to work, I can send 64 byte packets back and forth. The only issue now is that the device shows up as a mouse in the windows devices dialog.How can I change it to show up as a generic deviec?

i am using stm32l072XX I am using USB msc modefound below functions to detect connection and disconnection of usb in file usbd_core.cusbd_LL_suspend(***)usbd_LL_resume(***)they work properly when i insert or remove usb cable(i have added print statement in both functions)(connected one end to microcontroller and other to pc)but when i keep usb cable connected and then power on the microcontroller, these functions are not called and my code doesn't knows that usb is connected.usb is still working as i can see in my computer(get a mass storage device), but the code in microcontroller doesn't knows it as i am watching above two functions only to detect.How to find at startup itself that USB is connected ?

I am using STM32f3 discovery kit with STM32 cube ide to interface the kit as USB HID mouse. I am trying to change the resolution of the mouse. The default resolution given in the Report descriptor is 400 dpi . (0x15, 0x81,     //   LOGICAL_MINIMUM (-127)- 0x81  0x25, 0x7f,     //   LOGICAL_MAXIMUM (127)- 0x7fIt is possible to change the value of the report descriptor to increase the resolution of the USB HID mouse.

So I'm back to getting the FATFS-SDMMC-FreeRTOS combo working on my board. I've got a simple project working without FreeRTOS and it uses the HAL_SD in polled mode. Stepping through my FreeRTOS project I see that this project calls HAL_SD_ReadBlocks_DMA() which fails. This doesn't surprise me as I haven't set up DMA and I can't see that CubeMX does either! My questions are:Do I have to use DMA with FATFS-SD card and FreeRTOS? If not, where do I change it to polled mode?If I do need to use DMA, how do I set it up? CubeMX offers options I don't understand, so is there a crib somewhere?