STM32 MCUs Embedded software

Hi All, I created a test project to Wake Up the device from STOP Mode when it receives data over UART. I ported code from "UART_WakeUpFromStopUsingFIFO" available at /STM32Cube/Repository/STM32Cube_FW_L5_V1.3.1/Projects/STM32L562E-DK/Examples/UART/Example project from STM is working as expected. The Device entered STOP Mode and Woke Up when it received data. But, My test project is not working. More Info: 1. The project was created for STM32L562 MCU. 2. Test board is L562-DK3. LED GREEN is not turn ON in my project if USART 1 configured. 4. Wake Up from STOP Mode is not working. 5. Receving bytes over UART is working when I disabled the code to enter STOP Mode ( SystemClock_Config_fromSTOP() ) and Configure the system clock after wake up from STOP Mode ( SystemClock_Config_fromSTOP() ). USART 1 is used. I have attached my project i

Inquiries regarding spiritDSP.We are implementing mp3 with DAC DMA using SpiritDSP.The time to play depends on the samplerate and bitrate of the mp3 file.The original time is 3 minutes and 10 seconds,The playback time is different as shown below.The capacity of the mp3 file was converted to the same BitRate without any difference even if the SampleRate was different.There is a phenomenon that the time to output the same capacity at DAC output varies depending on the sample rate.SampleRate is set as Timer, but is there a part that should be set separately?We need help from many users.

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I'm having problems with the PDM2PCM lib and am getting desperate.I have a STM32L151 with an external clock source of 8.192 MHz. The SYSCLK runs with 16.384 MHz. The APB2 (SPI1) runs with 4.096 MHz.I'm sampling a PDM mic with an 8-bit SPI at 2.048 MHz. The prescaler is on 2, CPOL is low and CPHA is on the 2nd edge.I'm using the DMA in circular mode, byte-oriented and with memory increment to fill the PDM buffer. I transfer 512 bytes.My PDM buffer has 2 x 256 bytes for pseudo double buffering and as PCM buffer I have 32 x 16-bit unsigned (uint16_t). On each half-transfer and full-transfer (every 1ms each), I execute the PDM_Filter function with half of the PDM buffer to fill the PCM buffer. Thus I should get 32 samples per 1ms. I have 64 as decimation factor. Unfortunately, all I get is junk. Where could the reasoning error be or what did I not understand correctly? Thank you very very much for the help!Here are some more excerp

Hello, I'm using ST32H743ZI2 nucleo board as TCP client. When I setup the ethernet configuration/initialization, I considered the https://community.st.com/s/article/How-to-create-project-for-STM32H7-with-Ethernet-and-LwIP-stack-working article.Additionally, I'm using Lwip Raw Api, I do not use Rtos. My program is working, I can connect the server, I can communicate with the server, there is no problem. But communication speed is very slow. When I transmit data, which lengths about 30 bytes, from server to client, which is my nucleo board, in 1 ms period, it can not catch the data at time. When the period about 50ms there is no problem. And also I'm in trouble in transmitting packet from my board. It is also slow. By the way, pinging to board, replied <1ms. I checked some questions in the forum, I tried somet

I am trying to post data using MQTT in LWIP drivers. I am able to bring up the ethernet connection, can ping from PC to STM32F767 device as well. Tried to connect to MQTT broker. When publishing message I get an error as follows:-tcp_write : could not allocate memory for pbuf copy size 88mqtt_output_send: Send failed with err -1 ("Out of memory error.")Why am I getting this error?

I have both TX and RX on SPI1 on a F407 running in DMA circular mode. In the HAL_SPI_TxRxCpltCallback I parse the data that I receive from the Pi (since the Pi and the STM32 communicate over SPI1). Does the TxRx callback get called when BOTH, TX and RX are complete or when either is complete? Also, I tried starting the SPI for Tx and Rx in DMA mode but separately like this,HAL_SPI_Transmit_DMA(&hspi1, rpi_tx, 55); HAL_SPI_Receive_DMA(&hspi1, rpi_rx, 55);And then defined separate RX and TX callbacks. But this does not seem to work and they do not trigger nor receive the data from the Pi. Is there a way to define two separate callbacks?

Hello,I am trying to use USB-HS DMA in my program... It works good with other endpoints except EP0For EP0, the enumeration phase is done successfully, But when I start sending my USB class specific messages one after the other continuously on EP0, after some successful transmissions, it suddenly gets stuck and EP0 Nack status is set ... I also check that DMA address be 4byte-alignNote that there is no problem when DMA is disabledWhat could be the probable mistake?Thanks in advnace

my mcu is STM32F103RGT7.​I want to set RDP level to 1 in firmware.Error occurs in HAL_FLASH_OB_Launch().​Please tell me what to do.The following sources have been used: ​ HAL_FLASHEx_OBGetConfig(&OptionsBytesStruct); if( OptionsBytesStruct.RDPLevel != OB_RDP_LEVEL_1 ) { /* Unlocks the option bytes block access */ HAL_FLASH_Unlock(); HAL_FLASH_OB_Unlock();​ OptionsBytesStruct.RDPLevel = OB_RDP_LEVEL_1; OptionsBytesStruct.OptionType = OPTIONBYTE_RDP; if( HAL_FLASHEx_OBProgram(&OptionsBytesStruct) != HAL_OK ) { DEBUG_PRINTF("RDP_WRITE Error\r\n"); /* Error occurred while options bytes programming. **********************/ while( 1 ); } /* Launch the option byte loading */ HAL_FLASH_OB_Launch(); /* Locks the option bytes block access */ HAL_FLASH_OB_

I just opened up my brand new STM32F407G board, checked that JP1 was on and Both CN3 jumpers were on, and plugged it into a USB port and nothing happens. No lights, no nothin.can someone help.

Could anyone guide me how to enable it and what all changes we have to do in .IOC file and also if any code of patch want to add manual.Please suggest.

I have a problem with operating the traffic light from the class method - every time the program crashes at that point.Here is a simplified example for understanding what I'm writing about:Class:class IO_control { int num;   public: osSemaphoreId semaphoreHandle; int *outputs; IO_control(int num,int outputs,osSemaphoreId semaphoreHandle); virtual ~IO_control();   void SetOutputs(); void UnsetOutputs(); };     /***********************************************/     IO_control::IO_control(int num, int *outputs,osSemaphoreId semaphoreHandle) { this->num = num; this->outputs = outputs; this->semaphoreHandle = semaphoreHandle; }   IO_control::~IO_control(){}   void IO_control::SetOutputs() { osSemaphoreWait(semaphoreHandle, osWaitForever); *outputs |= num; osSemaphoreRelease(semaphoreHandle); }   void IO_control::UnsetOutputs() { osSemaphoreWait(semaphoreHandle, osWaitForev

Pretty much what the Q above says. Is it possible to do a HAL_GPIO_ReadPin on a pin that has been configured as an external interrupt?

I am using NUCLEO-L4R5ZI-P devlopment board. I am trying to use USB OTG functionality. I used RM0432 for programming purpose.For e.g. I want to know about Session request protocol interrupt in which reference manual mention: "In device mode, this interrupt is asserted when VBUS is in the valid range for a B-peripheral device".Can any one please help me to understand here?

I have an intermittent issue with a USB composite device on STM32F745 where an endpoint is failing to send data back to the PC and then the PC resets the connection.I've applied the interrupt disabling from https://community.st.com/s/question/0D50X00009XkhXw/usb-cdc-device-receive-fails-on-transmit and that did improve things somewhat, however it isn't fixed.My code is derived from ST's example codes.In normal operation, the MSC is queried by the PC periodically with a "Test Unit Ready" command. The CDC is in full flow at about 150 useful data packets per second.After a random time period (between a few minutes and multiple hours) the USB send function is unable to add data to the IN FIFO.This line fails:  if (

Using stm32flash -a0x51 -w binary.bin -S 0x3000 /dev/i2c-4but get backFailed to write memory at address 0x00003000For 0x8003000 I getErasing memoryPage-by-page erase error.Failed to erase memoryAny solution...can move offset i.e. bootloader offset. I don't believe sector are issue?

I try to make a data logger, I'm using STM32F407 DISCOVERY and store the data into the SD. I have to use the USB port for communication between STM to PC for logging status. Eventually, after recording, I want to download the file the same way we copy a file from USB Flash drive.

I am updating STM32G030F6 via the built-in ROM bootloader from another MCU. 2 issues:The i2c ROM bootloader slave address is actually 0x56, not 0x51 as written in AN2606. I discovered this on this ST community thread: https://community.st.com/s/question/0D53W0000093IXeSAM/stm32g030f6-i2c-bootloader-not-working-no-ackPlease fix this documentation error; I wasted a couple hours on this before finding the above linked post The i2c response that comes back when I send command frame 0x01 + 0xFE to STM32g030 i2c bootloader is 0x12, indicating I2C protocol v1.2. However, AN4221 only describes I2C protocol v1.0 and v1.1. Does STM have internal documentation describing I2C protocol v1.2?

My stm32l4 discovery kit iot node b-l475e-iot01 stopped the connection via connector 8, I couldn't do it at all, so I used ST-LINK V2, I got communication, but I can't use the USB again, I didn't touch the hardware, absolutely nothing.

I am using STM32F429 in my project which connects to an ATmega2560 thru UART. In arduino, there is a function Serial.Available() to check if the serial buffer is empty or not.Is there a function in STM32 that is similar to Serial.Available() in Arduino?BTW, I am using HAL libraries in STM32CubeIDE and HAL_UART_Receive(huart, pData, Size, Timeout) to read the contents of UART buffer.Please help. Thanks!PS. I've read the documentation in HAL library but I'm not sure if there is one. I've looked into HAL_UART_GetState but Im not sure.

Deer electronicians,I was following the video "STM32 – Creating a File System on a SD card" from the ST Youtube channel.I done stricty the same things as in the video but an error occurs.../Core/Src/main.c:22:10: fatal error: fatfs.h: No such file or directory 22 | #include "fatfs.h" | ^~~~~~~~~ compilation terminated.I tried to enter manually the include path for all the files concened but many new errors are rising.My config :STM32F746-DISCO (the same as in the video)STM32CubeIDE 1.6.0Firmware F7 1.16.1Windows 10 64 bitsI stay reachable for any questions or precisions.Cordialement,François

Hello,I tried to develop my first µC board inspired by the " adafruit feather STM32F405 express". For layout I used KiCad and the board is made by Chinese PCB manufacturer JLCPCB. To activate the DFU bootloader, the BOOT0 pin must be connected to 3.3V pin and then the reset button must be pressed. Everything worked like the Adafruit Feather, but I have to wait more than a minute ( exactly 01:32.38 ) after pressing the reset button until the bootloader is activated.The HSE crystal oscillator (12MHz, LCSC part number is C165948) works . I tested it with oscilloscope.USB is " TYPE-C-31-M-12 " ( like adafruit feather ). D+ and D- pins of the µC are PA12 and PA11. The trace width is 0,261mm ( differential pair ) and was calculated with " JLCPCB Impedance calculator " for a 90 ohm impedance. The trace length is 66,33 mm. USB pin is connected to a voltage regulator AP2112-3,3V, P-channel mosfet ( DMG3401LSN-7 ), a battery management (MCP73832) and two oth

Hello,so I am trying to set up a INA3221 current/voltage/power sensor with my STM32F469I-Disoc board. The I2C_adress ist 0x43 (or 0x86 if shifted left). I set up my I2C with CubeMX in 400kHz mode and already used to interact with a BME280 sensor. The interaction with this sensor works without a problem, however it uses 8 bit registers.The INA3221 sensor has 16 bit registers. I am just getting startet and wanted to check/read the value of the configuration register (0x00) after writing my own config to it (config value: 0x7FFF).I guess I am doing the write operation wrong but I dont quite now what to change:extern I2C_HandleTypeDef hi2c1;   typedef struct { uint16_t checkv; }INA_DATA;   INA_DATA INA;   //Initialization of the INA3221 void INA3221_Init(void) { HAL_StatusTypeDef status=HAL_OK;   uint16_t mycfg=0x7FFF; //All channels enabled, 1024 averaging samples, 8.2ms BV CT, 8.2ms SV CT, and all continuo

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Hello,I am trying to write data in .txt file on a USB pendrive at a certain frequency (in the while 1 loop) using STM32L496ZG as the USB host in the Mass Storage Class (MSC) configuration.I succeded writing to the .txt file in the first iteration, but after I can't access the USB pendrive anymore. I investigated the matter and I found out that when accessing the USB pendrive in the first iteration, the MSC_Handle->State is put to MSC_IDLE (see code below). static USBH_StatusTypeDef USBH_MSC_Process(USBH_HandleTypeDef *phost) { MSC_HandleTypeDef *MSC_Handle = (MSC_HandleTypeDef *) phost->pActiveClass->pData; USBH_StatusTypeDef error = USBH_BUSY; USBH_StatusTypeDef scsi_status = USBH_BUSY; USBH_StatusTypeDef ready_status = USBH_BUSY;   switch (MSC_Handle->state) { case MSC_INIT:   if (MSC_Handle->current_lun < MSC_Handle->max_lun) { .... // initialization of the MSC }   //MSC initializati