STM32 MCUs Embedded software

Hi guys!I am trying to flash code via the USB-DFU but every time I tied BOOT0 to GND and connect a MicroUSB from the STM32 chip to the computer it does not detect it at all. I have no idea what's going on here?I am assuming its because I dont have VDD33USB Connected ? Otherwise I am out of ideas. I installed all needed drivers and what not.Any info would be helpful as this is my first time trying to use the bootloader of the STM32. Here's the schematic of the STM32 and what pins I used.

Hi! I am trying to connect my code (SD in SPI mode) to USB Device Mass Storage. I have tested my SD with SPI interface writing and reading blocks and files with FATFS and it works without problems... But when I connect it with STORAGE_Write_FS and STORAGE_Read_FS the computer ask me to format the unit... The computer read properly the card capacity but only when it is going to format the unit. I don't know what to do to solve this.I share the code lines below:int8_t STORAGE_GetCapacity_FS(uint8_t lun, uint32_t *block_num, uint16_t *block_size){ /* USER CODE BEGIN 3 */ //// storage is a extern variable that reads the card capacity (this is OK) *block_num = storage / BLOCK_SIZE; //fre_sect/2 / BLOCK_SIZE; *block_size = BLOCK_SIZE; return (USBD_OK); /* USER CODE END 3 */} int8_t STORAGE_Read_FS(uint8_t lun, uint8_t *buf, uint32_t blk_addr, uint16_t blk_len){ /* USER CODE BEGIN 6 */ uint64_t br=0; while(br<blk_len) { SD_Read_Block(buf, blk_addr);br++;

Hi @Guillaume!I tested GenericMQTT example with mosquitto MQTT server with two projects examples given at en.x-cube-cld-gen\STM32CubeExpansion_Cloud_CLD_GEN_V1.0.0\Projects/B-L475E-IOT01/Applications/Cloud/GenericMQTT on B-L475E-IOT01and aten.x-cube-cld-gen\STM32CubeExpansion_Cloud_CLD_GEN_V1.0.0\Projects\STM32F769I-Discovery\Applications\Cloud\GenericMQTT\MDK-ARM on STM32F769I-Discovery,wherein I observed that in both examples data is sent to MQTT mosquitto server successfully and data is received by the MQTT mosquitto server and visible in TeraTerm but the received commands are not being processed for either of the commands like     {"LedOn": true }     {"LedOn": false }     {"TelemetryInterval": <number of seconds> }     {"Reboot": true }I observed that in GenericMQTTXcubeSample.cat line no 266 cJSON * root = cJSON_Parse(mqtt_msg); it provides zero or NULL value in root poi

Hello everyone,I have the next problem, first use the STM32H7 series, previously only F series (F4 and F7).And i need some instruction (FAQ) with step by step how to do the simple program in CUBE and IDE to ping my board. (only properties in CUBE)Thank you, for your help and answers.

Hello,As part of my internship, I am tasked with writing a device driver for the Ethernet programmable interface. I am currently trying to understand the behaviour of the interface under receive overflow conditions.2 things puzzle me:The cumulated number of discarded frames caused by Rx queue overflows is HIGHER than the number of frames I actually do not receive on the application side. I compute the number of frames lost in overflows by regularly incrementing an internal counter with the value in ETH_MTLRXQMPOCR.OVFPKTCNT. As the ETH_MTLRXQMPOCR.OVFPKTCNT resets itself each time the register is read, I believe this should not be the cause of my issue. As for the number of actually lost frames, I am in control of the frames I send to the interface, and just set an increasing number as their payload (1st frame carries idx = 1, 2nd frame carries idx = 2, etc.), which I then use to figure out which frames are missing on the receive side.The "Rx queue overflow" interrupt gets triggered a

Hello guys :waving_hand:​I am having a STM32F401CDU6TR on a custom board and I am not able to run it at 84 MHz SYSCLK. The source is an external 8 MHz crystal with two 22pF caps as seen here:​I created the project in CubeMX as a Makefile project. I only use CubeMX for configuring the GPIOs as well as the clock. The actual code is written and flashed via VSCode. Works great so far.​Here is my current 84 MHz clock configuration in CubeMX:And this is my RCC configuration:​When I flash this code I always end up in a HardFault_Handler before the SystemClock_Config(); function returns. ​/** * @brief System Clock Configuration * @retval None */ void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct = {0}; RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};   /** Configure the main internal regulator output voltage */ __HAL_RCC_PWR_CLK_ENABLE(); __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE3); /** Initializes the RCC Oscillators according to the specified par

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We are working on STM32H743BITx customized board for USB OTG FS. We have configured the MSC but unable to detect the pendrive , nothing is getting filled in USBDiskPath and appli_state is showing application start when pen drive is connected but its not getting active to create the file.Thank YouKomala

Hello Everyone, I am using LWIP and Mqtt drivers on stm32f767. I am able to successfully connect to MQTT broker and able to publish data also. But after publishing some 45 json strings , the device gives me "out of memory error " and "mem_malloc: could not allocate 64 bytes" . I am not understanding why this is happening. The string length which I am posting is approx 580 bytes. The configuration inside the drivers is as follows:-#define MEM_LIBC_MALLOC         0 #define MEMP_MEM_MALLOC         1 #define MEM_SIZE            64000#define MEMP_OVERFLOW_CHECK       2 #define MEMP_SANITY_CHECK        1 #define LWIP_ALLOW_MEM_FREE_FROM_OTHER_CONTEXT 1#define MEMP_NUM_PBUF         16 #define MEMP_NUM_S

We want to design a USB 2.0 audio device with I2S output with 192 or higher sampling rate. We didn't find a reference design with STM32F446MCY6TR and STULPI01BTBR. Could you confirm that this will work together?

I'm trying to download the standard peripheral library for my STM32373C eval board based on the STM32F37... I would like to have access to examples since it seems as though the STMCube IDE does not support the evaluation board yet, nor the examples for this part. It only supports a new project with all of the bare necessities.Download link:https://www.st.com/en/embedded-software/stsw-stm32115.html#documentation

Hello,I use SM32F103ZH6 MCU.I'm trying to send log (i.e. text) messages from my board to host PC on a UART2 using HAL_UART_Transmit_DMAproblem: 2 successive calls to HAL_UART_Transmit_DMA, only last call gets executed.logging function (sends text to host PC)void LogEvent(const unsigned int EventType, const char* format, ...){  va_list arg_list;  va_start(arg_list, format);  vsnprintf(LogString, MaxEventTextLength, format, arg_list);  if (EventType == EventType_Info)    strcpy(pcLog, "Info>");  else if (EventType == EventType_Warning)    strcpy(pcLog, "Warning>");  else if (EventType == EventType_Error)    strcpy(pcLog, "Error>");  strcat(pcLog, LogString);  strcat(pcLog, "\n\r");  HAL_UART_Transmit_DMA(&huart2, (uint8_t*)pcLog, strlen(pcLog));}UART2 is setup as followinghdma_usart2_tx.Instance = DMA1_Channel7;hdma_usart2_tx.I

Dear community,i have developed a custom board for ETH using STM32F407VGT6 and LAN8742. In this I have used one of gpio for resetting Phy IC. but my board is not working when controller is in Run mode. Some times it fetches IP when controller is in boot mode. also i found some custom development boards have phy reset pin mapped with gpio, but Mosft of the ST Nucleo boards have configured that with hard reset of mcu.please give me suitable soultion and configuration to be done for basic eth communication. also i tried examples but my issue is in reset configuration

Hi everyone!I’m developing a bootloader for a STM32L476RG MCU. My actual boot works fine (it erases my flash area before start writing the new application). However, if something wrong happens in the middle of an upgrade, it’s not possible return for my old application, so I want to create a bootloader model that saves a backup during my upgrade in other part of my flash (I have space enough) and after upgrade is successful, change automatically the jump to this new application area, and vice-versa.My first model of this works like showed below:void flash_jump_to_app(void){  /* Function pointer to the address of the user application. */  fnc_ptr jump_to_app;  uint32_t start_address;  start_address = appheader.EnderecoMSP ? FLASH_APP_1_ADDRESS : FLASH_APP_0_ADDRESS;  start_address |= 0x200; // vector offset  jump_to_app = (fnc_ptr)(*(volatile uint32_t*) (start_address+4u));  HAL_DeInit();&nbsp

#if USE_USB_AUDIO_PLAYBACK /* define synchronization method */ #define USE_AUDIO_PLAYBACK_USB_FEEDBACK 1 /* definition of channel count and space mapping of channels */ /* ! Please dont change channel count , other value than 0x02 aren't supported @TODO add support of multichannel*/ #define USB_AUDIO_CONFIG_PLAY_CHANNEL_COUNT 0x02 /* stereo audio */ #define USB_AUDIO_CONFIG_PLAY_CHANNEL_MAP 0x03 /* channels Left and right */ /* next two values define the supported resolution currently expansion supports only 16 bit and 24 bits resolutions @TODO add other resolution support*/ #define USB_AUDIO_CONFIG_PLAY_RES_BIT 16 /* 24 bit per sample */ #define USB_AUDIO_CONFIG_PLAY_RES_BYTE 2 /* 3 bytes */ /* definition of the list of frequencies */ #define USB_AUDIO_CONFIG_PLAY_USE_FREQ_192_K 1 /* to set by user: 1 : to use , 0 to not support*/ #define USB_AUDIO_CONFIG_PLAY_USE_FREQ_96_K 1 /* to set by user: 1 : to use , 0 to not support*/ #define USB_AUDIO_CONFIG_PLAY_USE_FREQ_48_K 1 /* to set by

Hi All,I am currently designing a few products and would like the ability to update firmware at a later date should it be required. CAN is most appropriate for our situation. I have not needed to deal with the bootloader in the past, so I'd just like to see if anyone has criticisms here about my approach below.An STLINK-V3SET's MB1440 CN5 can be used as the middleman between PC and CAN port on the target device/s. A custom computer application will be written building on the STLINK-V3-BRIDGE API, talking to the end device/s and gathering information via custom CAN messages such as system ID and firmware revision while providing a basic GUI. A quick look at the source code has led me to believe this should be possible, as functions are provided for all manner of CAN initialisation and data transfer. The target device/s will be idly listening for specific command messages over CAN bus. Programmer sends a start message and the desired target responds accordingly over CAN. Programmer begin

Hello!I am connecting my nucleo to my computer through the user usb. I have set FDMOD and received the USBRST message and initialized the endpoint, but after i receive ENUMDNE I never receive the RXFLVL interrupt.Here is the output of dmesg on my computer:[ 6544.461644] usb 1-10: new full-speed USB device number 56 using xhci_hcd [ 6544.589741] usb 1-10: device descriptor read/64, error -71 [ 6544.829707] usb 1-10: device descriptor read/64, error -71 [ 6545.065646] usb 1-10: new full-speed USB device number 57 using xhci_hcd [ 6545.197659] usb 1-10: device descriptor read/64, error -71 [ 6545.433727] usb 1-10: device descriptor read/64, error -71 [ 6545.541712] usb usb1-port10: attempt power cycle [ 6546.197666] usb 1-10: new full-speed USB device number 58 using xhci_hcd [ 6546.197770] usb 1-10: Device not responding to setup address. [ 6546.405772] usb 1-10: Device not responding to setup address. [ 6546.613665] usb 1-10: device not accepting address 58, error -71 [ 6546.741727] usb

When trying to read/write to the connected eMMC device, the eMMC driver will sometimes fail with an error. After failing in this way, every call to HAL_MMC_ReadBlocks or HAL_MMC_WriteBlocks will fail until the microcontroller is restarted. If the first call in a series of reads succeeds, all following calls will complete without issue *UNLESS* the following calls are to a non-sequential part in eMMC memory, in which case they might fail.A partial work-around I’ve found is to put HAL_Delay calls before each call to the eMMC memory, but this does not always work. Similarly, running in debug mode and walking slowly through the process will always work. And then following calls at high-speed run without issue.The HAL_MMC_GetCardState function always returns a 4 - HAL_MMC_CARD_TRANSFER. If I try to wait for the cardstate to become HAL_MMC_CARD_READY before making a call, it will stall indefinitely. My hypothesis is that the stm32l5xx_hal_mmc driver is not correctly

Hi,I have been reading through documentation for the ST UART bootloader on the STM32F091cc chip. I want to use UART2 as my UART for both standard serial communication and FW updates.UART2 can use pins (PA2,PA3) or (PA14, PA15). I would like to be able to use PA2 and PA3 because PA14 overlaps the SYS_SWCLK and I would like to be able to use SWD and UART at the same time.I have successfully talked to the bootloader over PA14 and PA15, and there is a discrepancy in documentation that is making me hesitant to move to PA2and PA3. PCB is not easy to hack up or else I'd jump some pins and try.This is from the AN2606 Application note and mentions both pin sets for the STM32F09xxx device bootloader.This is from the STM32F091xC  data sheet. It only mentions PA14/PA15.Does anyone have any idea which one is correct? Could you use both pin sets for UART2 to talk to the bootloader? Or only the PA14,PA15 set?Thank you for your help.

hello allcurrently i am working on Free RTOS (STM32L152RETX microcontroller ) . in stmcubemx no any one feature to implement the any protocal like TCP/ip etc is there any possiblities to implement this protocal by using STM32L152RETx microcontrollerif yes then how

Let know what is procedure to get PID with particular MCU part number is STM32F103, so we can used it for the mass production as our own PID. let me know how can i process it to buy PID.

Hello everyone, I am trying to use RTC in my ethernet LWIP code,but I have observed that my code hangs when I do MX_RTC_Init(); why is it so ?? Can't we use internal RTC? I can use SNTP but why does RTC hang the code?? Also my timer interrupt is not called when the device disconnects from MQTT server.. it continuosly tries to connect to MQTT server from callback. Is there any way I can handle interrupts to work properly?

Hi,I'm trying to set up a simple test code for bi-directional audio streaming via USB using NUCLEO-H743ZI2 and a custom board with Cirrus CS4274 codec IC. I've tried and failed to find some documentation for CubeMX included USB Audio Class library (comment in .c files states that they are from 2015) - so I don't know how to accomplish my goal with the library provided with CubeMX. I found the X-CUBE-USB-AUDIO software package on the ST site, so I downloaded the archive with it and tried (and failed) to import that package into CubeMX, which resulted in an error, so then I tried (spoiler: with no result) to merge more recent USB audio library files (from the downloaded archive; comment in .c files states that they are from 2019) with those generated with a most recent version of CubeMX and that didn't work either. Maybe there is some documentation and/or tutorial that I'm not aware of? Also, the example projects supplied with the X-CUBE-USB-AUDIO package are not that well documented and

My processor board uses STM32H743V. The Ethernet chip is KSZ8081, MII mode. I also use AZURE RTOS and NetX. I tried using CubeMX to generate an application, but it always gives me some error when I compile the program. I tried different combinations, but no way to solve the problem. Does anyone know how to set up CubeMX and Azure NetX in MII mode? Does anyone have an example?

Hello everyone.Recently I started to use LL library & STM32CubeIDE to do my project.I'm trying to use DMA to transfer data which converted from ADC multiple channel from peripheral to memory.the DMA data is total wrong, converted data is almost the same. I searched a lot, but I can't fix it.the DMA data is fine when I convert single channel.really need some help...mcu f103veScan conversion mode ONContinuous conversion mode ONNumber of conversion 6trigger by softwarehere is the code.void MX_ADC1_Init(void){ /* USER CODE BEGIN ADC1_Init 0 */ /* USER CODE END ADC1_Init 0 */ LL_ADC_InitTypeDef ADC_InitStruct = {0}; LL_ADC_CommonInitTypeDef ADC_CommonInitStruct = {0}; LL_ADC_REG_InitTypeDef ADC_REG_InitStruct = {0}; LL_GPIO_InitTypeDef GPIO_InitStruct = {0}; /* Peripheral clock enable */ LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_ADC1); LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_GPIOC); /**ADC1 GPIO Configuration PC0