STM32 MCUs Embedded software

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Hello! I have a problem. I created a USB audio device project in CubeMX. Then I changed the descriptors and related functions to get a device like a microphone. The device is detected correctly in the Windows system. But there is a problem: DataIn endpoint callbacs and SOF events are not raised. I cannot process and send data. I am interested in implementation using the latest version of the HAL + USB device library (I only find examples use old versions and USB OTG + CMSIS). Why might Isochronus DataIn callbacks be missing? Project sources in attachment

For a little background, i have modified the project to take audio data from a static file to eliminate any issues with interrupts from the mems microphones may have been causing though the result is the same. I have also added print statements to trace through the calls. I am using Audacity to record the audio as shown in the image attached. I have also attached the project in the event anyone would like to take a look at it. It is really close to being fully functional. Problem #1:The USB_REQ_SET_INTERFACE setup call gets called every time located in usbd_audio_in.c @ 326 which is opening the Isoch endpoint and setting the alternate interface and sending a dummy buffer of data. This should be followed by a DataIn which happens sometimes and when it does occur audio is recorded fine when it does not happen stopping and starting the recording multiple times can get it to fire. Problem #2:USBD_AUDIO_DataIn usbd_audio_in.c @ 393,

Hello community,I'm experiencing difficulty when debugging my software.I'm running Mac OS Catalina with a L433 Nucleo, plugged into my USB-C to USB-A converter.I wrote a very basic "echo" program to take my USART input and echo it back to my Mac.I keep on getting an ORE flag and my program gets stuck in the interrupt.I took the project and the board to a Windows Machine and it worked without hassles.Any advice please.

I am using STM32F072RB.I have enable the FreeRTOS CMSIS1.I have created two tasks which uses the same UART for transmitting data.I want to use the semaphore concept to use this shared resource between two task.The task as belows:TASK 1 High priorityvoid StartTask02(void const * argument){  /* USER CODE BEGIN StartTask02 */  /* Infinite loop */  for(;;)  {   uint8_t data[1];   data[0] = 65;  HAL_UART_Transmit_IT(&huart1, &data, 1);  } /* USER CODE END StartTask02 */}Task 2 Low priorityvoid StartTask03(void const * argument){  /* USER CODE BEGIN StartTask03 */  /* Infinite loop */  for(;;)  {  osSemaphoreWait (myBinarySem01Handle, 100);  uint8_t data[1];     data[0] = 66

STM32G071�?서 USB-C 용 CC1, CC2 pin map�?� 있으나 USB-B type으로 만 사용하려면 USB-DP, DM �?� pin map�?� 알려 주시기 바�?니다.

Hello,I need your help to recognize my issue correctly, please help me,background:I am having trouble using the stm32l053RB NUCLEO development board for USB protocol parsing.issue：When​ using timer to generate PWM, once the USB receive data is configured, the PWM waveform frequency will be greatly reduced.Also when using the timer to generate a timed interrupt, once the USB work is configured, the CNT data will be stuck, and the timer will stop unless the USB is reset.I have tried all the timers of this chip and will have the same problem.Why is this happening, does USB work affect the clock of TIMER?​ if you can help to solve issue or give any advice, I am very thankful for your kindness in advance.Thanks.​my email is jysong@mindpointeye.com

Hi,I am working on a project using STM32F7. So far I have touchgfx working with external QSPI for storing image resources. Everything is working good and expected so far.Now I would like to add audio functionality. The aim is to play WAV files when a touchgfx button is present. I am planning to use x-cube audio framework for the audio part.What I am not clear about aretouchgfx is using qspi in memory mapped mode. My image resources are converted to C format by touchgfx and saved onto the qspi as part of flashing. correct?for audio playing WAV files, it would be easier if I core store them on the QSPI using fatfs. Can this be done since touchgfx is already using the qspi in memory mapped mode.If not possible, can I store my wav files on the qspi as raw data. How do i do this?thank you for the help

Hi,Is there a date to STM32CubeMX/STM32CubeH7 release with Azure RTOS?

I am trying to make USB work on a custom board. On our board the VBUS and ID lines from the USB-B connector is left floating, Because we always want to be in device modeSo to compensate for this I am using B-peripheral session valid override. This in turn generates a session request interrupt. (Without it nothing happens)I have followed the Core Init instructions from the reference manual and as soon as I clear the USB_OTG_DCTL_SDIS I get a Reset Event (as expected). But Never get the USB_OTG_GINTSTS_ENUMDNE event. There is no difference for when the cable is plugged in/out at power on or plugged in after reset interrupt happens.Is it possible (adviseable) to make the usb work without using VBUS sensing.?

Hi,I design a custom USB - UART using STM32F042F6This is my schematic This is pin configuration in Cube MXThis is the board layout

I am studying USB PD now with the demo board B-G474E-DPOW1.I try to program the consumer and need help with switching profiles. When the cable is connected, the charger displays a list of available profiles. I can't figure out how to choose the right profile. Should the consumer choose one of the suggested source profiles? Or does the consumer pass one of its profiles to the source? At what time can I send a switch request? Could you give an example of a function that implements profile switching?

Hello community,I am facing massive problems using the SPI1 with DMA transfer on the STM32H743 Nucleo board. Using interrupt based transfer works, but when I try to use DMA I always receive zeros in the receive buffer and I get an overrun error from the SPI peripheral.As the SPI is configured in full duplex master mode I use the HAL_SPI_TransmitReceive_DMA function to generate a clock signal on the bus when I want to receive data. I configured both TX and RX DMA channels for the SPI. HAL_SPI_TransmitReceive_DMA returns HAL_OK. DMA transfer is completed and SPI_DMATransmitReceiveCplt is called. However, HAL_SPI_TxRxCpltCallback is not called due to the overrun error of the SPI.I know that there are several rules to obey when you want to use DMA with the STM32H743. The DMA channels can only access RAM in the D1 and D2 region. As I use TrueStudio with the gnuarm compiler I added following section to the linker file: .DMA_**** : {

Hello,I have designed a board for testing devices. At the heart of the circuit is the STM32F401RET6. With a new circuit board, I can read across the 3.3V rail unpowered (to ground) and see a resistance of about 450 ohms. I was performing some testing with another unit and it started acting strange. The board is located in an enclosure but one can control the device over a USB connection to a PC.I opened the enclosure and removed the PCB and found that the power supply (3.3V regulator) and the STM32F401RET6 were extremely hot. I checked the resistance of the 3.3V rail unpowered (to ground) and found a value of 15 ohms. This is actually the second time that I found the circuit to be damaged in this manner. With the previous instance, I removed the STM32F401RET6 and saw the low resistance go to a much higher value. I then inserted a new STM32F401RET6 and got a resistance reading similar to the 450 ohms (Another known good working unit). The unit was perfectly fine

Hi Experts,I am planning to use stm32l431cb - as it is sufficient controller with 48 pin for my use case. Basically I am trying to find out, how to flash my code into stm32l431cb controller.I referred to a. https://www.st.com/resource/en/datasheet/stm32l431cb.pdf - data sheetb. https://www.st.com/resource/en/reference_manual/dm00151940-stm32l41xxx42xxx43xxx44xxx45xxx46xxx-advanced-armbased-32bit-mcus-stmicroelectronics.pdf - User manual and could not get any clear information.Referred to AN2606 (https://www.st.com/resource/en/application_note/cd00167594-stm32-microcontroller-system-memory-boot-mode-stm

Good electronical morning to everyone.Context:I find myself needing to enter stm32´s system bootloader during runtime on command.I asigned a GPIO with a simple RC circuit to pull the BOOT0 pin high.The system reset is done by IWDG exception, i just stop feeding the watchdog and reaches its countdown. Question:I dont like my solution, i dont want to wait an undetermined ammount of time for the iwdg to reach its countdown.I remember from my time in uni ( with LPC1768 mcu) you could feed the wrong key to the watchdog inmediatly forcing the wdg exception (kicking the watchdog).Can this be done with HAL

I know jump to system bootloader using BOOT0 Pin, but my requirement is to jump from user application.I successfully jump to system bootloader from user application in STM32L100RC, but its not happening in STM32H743BIT6.Please support if any know how to Jump to system bootloader in STM32H743.

I have a problem with +500byte ICMP packet, I am using ubuntu 16.04 and firewall inactive. When I try to send ping with this command ping -s 500 192.168.1.127 ping is successfull, but when I try to send this ping -s 580 192.168.1.8 ping reply didnt accept from computer but my 192.168.1.127 device send reply I see on network analyser. But computer not accept 500+ data. How can I solve this problem.When I send the 500+ ping from computer my device replied just one time, and it shows me this error:Expert Info (Error/Protocol): IPv4 total length exceeds packet length (578 bytes)enter image description hereand I have bad checksumWhat is the reason for the this error ? Pc connected point to point to my stm32+lwip device with ethernet interface.

 I can loop to see a bunch of alert status changes in the alert status registry(0x0B). My alert mask register(0x0C) value is 0x11. Also PD sniffer shows new PD negotiation successfully.Thanks.

Background of a problem:I am using ST low level libraries for USB OTG and USB HOST. I wrote my own USB class for ASIX USB-ETH adapter based on template and CDC class. The problem was that solution presented by ST driver was to slow. I could only send 64 bytes using USBH_BulkSendData(USB Full Speed), so transfer speed was very slow. I've changed the driver to send more data in one USBH_BulkSendData call, filling as much bytes as available in FIFO, then put rest of them in FIFO empty callback(or in several callback). This speed up the transfer, but here comes the issue.After some transfers(sometimes a few, sometimes a lot) when I put words into TX FIFO something fails. As I understand after successful transaction USB Core decrements PKTCNT[9:0] in OTG_HCTSIZx register.In my case when there are 164 bytes left to send before I put them into FIFO in this register there are values:3 in PKTCNT164 in XFRS

My APB1 Clock Frequency is 42Mhz.Init:hcan1.Instance = CAN1; hcan1.Init.TimeTriggeredMode = DISABLE; hcan1.Init.AutoBusOff = ENABLE; hcan1.Init.AutoWakeUp = DISABLE; hcan1.Init.AutoRetransmission = DISABLE; hcan1.Init.ReceiveFifoLocked = DISABLE; hcan1.Init.TransmitFifoPriority = DISABLE; hcan1.Init.Mode = CAN_MODE_NORMAL; hcan1.Init.SyncJumpWidth = CAN_SJW_1TQ; hcan1.Init.TimeSeg1 = CAN_BS1_2TQ; hcan1.Init.TimeSeg2 = CAN_BS2_4TQ; hcan1.Init.Prescaler = 5; //6   if (HAL_CAN_Init(&hcan1) != HAL_OK) {   Error_Handler(); }   CAN_FilterTypeDef CAN1_Filter;   CAN1_Filter.FilterBank = 0; CAN1_Filter.FilterMode = CAN_FILTERMODE_IDMASK; CAN1_Filter.F

Hello,I have a PDM MEMS microphone that I am reading in I2S master receive mode. I am trying to take this data and put it in a FIFO buffer and then output the data over UART using DMA. I must be confusing the buffer sizes because I get mostly zeros except for 64 Bytes of supposed data. Can someone please help me figure out where my issue is. Code is below. Thanks for any help.uint16_t pdmRxBuf[128]; uint16_t audio_out[64]; uint16_t MidBuffer[16];   void FifoWrite(uint16_t data) { fifoBuf[fifo_w_ptr] = data; fifo_w_ptr++; }   uint16_t FifoRead() { uint16_t val = fifoBuf[fifo_r_ptr]; fifo_r_ptr++; return val; }       HAL_I2S_Receive_DMA(&hi2s2, &pdmRxBuf[0],64);   HAL_UART_Transmit_DMA(&huart2, (uint8_t *) audio_out, 128);   /* USER CODE END 2 */   /* Infinite loop */ /* USER CODE BEGIN WHILE */     while (1) {   if (rxstate==1) { PDM_Filter(&pdmRxBuf[0],&MidBuffer[0

I'm writting a very time-critical application for the STM32F334, where I have to control 4 power converters (mostly 3, one is time-shared another power converter). And recently I saw some ways to optimize code, like this://*********** 1360ns ****************LL_HRTIM_TIM_SetCompare3(HRTIM1, LL_HRTIM_TIMER_A, DEF_TMRA_STATIC_MAX_PWM_CTE+i_CalcDutyA);LL_HRTIM_TIM_SetCompare1(HRTIM1, LL_HRTIM_TIMER_A, DEF_TMRA_STATIC_MAX_PWM_CTE-i_CalcDutyA);LL_HRTIM_TIM_SetCompare3(HRTIM1, LL_HRTIM_TIMER_B, DEF_TMRA_STATIC_MAX_PWM_CTE+i_CalcDutyB);LL_HRTIM_TIM_SetCompare1(HRTIM1, LL_HRTIM_TIMER_B, DEF_TMRA_STATIC_MAX_PWM_CTE-i_CalcDutyB);//********* Optimized version **** 500ns or lessHRTIM1->sTimerxRegs[HRTIM_TIMERINDEX_TIMER_A].CMP3xR = DEF_TMRA_STATIC_MAX_PWM_CTE+i_CalcDutyA;HRTIM1->sTimerxRegs[HRTIM_TIMERINDEX_TIMER_A].CMP1xR = DEF_TMRA_STATIC_MAX_PWM_CTE-i_CalcDutyA;

Hi everyone,​How can I calculate cross power spectrum density by using cmsis dsp library with stm32f407 discovery board.

Hi all,I have a project for which we need as fast as possible drivers so we use as much as possible the LL drivers . Yet it seems that there was no implementation of LL for MDMA, even if it seems that all other DMA managers have theirs.Anyone knows why it is the case?And also do you know if there will be a future implementation of these drivers?ThanksSeb