STM32 MCUs Products

Hi there,I have a custom board with an STM32F070. The VDD and VDDA are connected together. System runs at 48 MHz from a 8 MHz crystal. Each VDD has a 100nF cap. VDD is 3.3V, from a 1% LDO.The code uses UART1, UART2, USB and I2C2. Also, many I/O pins. All works correctly.I have a single channel (ADC_IN5) conversion, with a simple polling. Result of conversion fluctuates by several hundreds even at 0V (ie. from 0 up to 300).The initialitation code is below:/** * @brief ADC Initialization Function * @PAram None * @retval None */ static void MX_ADC_Init(void) { /* USER CODE BEGIN ADC_Init 0 */ /* USER CODE END ADC_Init 0 */ ADC_ChannelConfTypeDef sConfig = {0}; /* USER CODE BEGIN ADC_Init 1 */ /* USER CODE END ADC_Init 1 */ /** Configure the global features of the ADC (Clock, Resolution, Data Alignment and number

Hi, Can we use any UART /USART port for debugging? or any dedicated port only i have to allocate for debugging purpose? what are the main application where USART can be used and UART cannot be used?

Hi all I want to understand behavior of TX mailbox here I am trying to send three ID but only i able to see two ID at a time in TI0R. I have fewer doubts which I hope you can clear. Doubt 1:  Do I have to use three different mail box for three ID or One is enough . Doubt 2. Like in RX mailbox I have locking mechanism in which I can see different RX frame in RXFIFO0 so I mean to say It can hold upto three different messages. So is there any logic in TX mailbox also to locked or to see all ID because I think it is overwriting the buffer. CAN_TxHeaderTypeDef txHeader; uint8_t tx_data[8] = {0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88}; uint32_t tx_mailbox_used; txHeader.StdId = 0x3e8; // Example CAN ID txHeader.RTR = CAN_RTR_DATA; txHeader.IDE = CAN_ID_STD; txHeader.DLC = 8; if (HAL_CAN_AddTxMessage(&hcan1, &txHeader, tx_data, &tx_mailbox_used) != HAL_OK) { Error_Handler(); } txHead

I don't know the function of the BIST receive mode bits in the picture. According to the description, when this bit is enabled, the protocol layer cannot receive data. So, what does this model do? Please help me resolve this confusion. Thanks   *This post has been translated from Chinese to comply with the ST Community guidelines.

Hi,I am using STM32H753XI in my ongoing design. We are using most of the timers and internal ADCs in our application. So it is very tough for me accommodate both external eMMC and NOR flash interface.  My question is, Can we boot STM32H753 with external eMMC? Use case is, in case internal 2 MB is not sufficient for software to flash, we may need to go for external bootable memory. So again , can we boot from external eMMC ? if yes, what shall be the configuration on STM32H753 to configure it from external eMMC? Can we use do the partition in external eMMC and use the other part of memory for storing other data like logs?What you suggest should we go for eMMC or parallel nor flash or serial nor flash as external bootable memory?     

Hello,I am writing a programm for a raspi cm4 to flash a programm on an STM32 using the UART bootloader. The raspi parses some hex file that I want to flash and sends data packets to the bootloader using the 0x31 write command. Here is what I have achieved until now:Successfully enable the bootloader and initiate uart communicationErase the user memory (mass erase command)Use the write command and receive an ACK backWhen I run the complete programm, no error is returned and no error/nack is returned. I can affirm that the bootloader answers all my requests without exception with an ACK because I monitor the bus with a logic analizer. However, when I compare the memory to the initial hex file I am trying to flash, there are some differences.Everything is identical up to this part of the hex file::04EBD0009E467047A6:10EBD800000000000000000000000000000000002D:10EBE800000000000100000002000000030000

Hello everyoneI need to implement a protocol for an external ADC. An SPI read with 22 bits should be triggered via a timer in a 4us cycle.      My procedure:TIM2 triggers a DMA transfer from the TxBuffer into the SPI->TXDR (with some zeros)

Hi,We need an example configuration code with details of Audio data Received and getting Transmitted using Stm32F407G-DISC Board.In that example if it could have the details of without using any other External things how to receive the audio data through internal PDM microphone. Then send the audio data and data of internal DAC(CS43L22) to the headphone jack, Followed by connecting the audio data received through the headphone to the disc Board. Thanks,Senthilkumar.S 

I am facing an issue where my STM32H7 board is not detected using STM32CubeProgrammer. I am using an STLINK-V3SET programmer, and the following error keeps appearing:   Error log: 17:04:59 : UR connection mode is defined with the HWrst reset mode17:04:59 : ST-LINK SN : 0028001E323351073936363417:04:59 : ST-LINK FW : V3J13M4B5S117:04:59 : Board : STLINK-V3SET17:04:59 : Voltage : 3.29V17:04:59 : Error: No STM32 target found! If your product embeds Debug Authentication, please perform a discovery using Debug Authentication 17:06:59 : UR connection mode is defined with the HWrst reset mode17:06:59 : ST-LINK SN : 0028001E323351073936363417:06:59 : ST-LINK FW : V3J13M4B5S117:06:59 : Board : STLINK-V3SET17:06:59 : Voltage : 3.29V17:06:59 : Error: No STM32 target found! If your product embeds Debug Authentication, please perform a discovery using Debug Authenticatio

Hello Team,We got our board booted up recently and Currently testing out CAN with classic mode. All our external devices support Classic CAN mode and even after configuring it with 500kps, It doesn't seem to transmit data.Please, find the attached MX file that we use currently. Any help would be appreciated.    

i got a stm32f4 and wrote some code to it, then tried to run openocd  and got this error my openocd.cfgnote - i reflashed the stlink a couple of times and changed it to jlink(and then back to stlink) so that might have something to do with it.would very appreciate

I do not see any information on the datasheet or reference manual, how is the TRACECLK in STM H5 (particularly 563 if it matters) derived ? Is the TRACECLKIN SYSCLK or FCLK ?

 Hi everyone,I’m working on a project using an STM32 microcontroller (STM32H745IITx), and I’m trying to set up a DMA transfer for an external 12-bit, 20 MSPS ADC with a 12-bit parallel interface. On my custom board, the data pins of the ADC are routed to the GPIOF port. The ADC clock is generated using Timer 3's PWM output (running at approximately 18 MHz). Additionally, I have an external interrupt (Trigger) that I use to start a measurement.I want to achieve the following:The external interrupt should start the DMA transfer.The DMA should then transfer the GPIOF port data on every Timer 3 interrupt event.I’ve done some research and found that the DMA must be set to Memory-to-Memory mode to achieve this. However, it’s not clear to me:When I call HAL_DMA_Start_IT, does the DMA transfer the entire buffer at the specified DMA speed?Or, is there a way to l

Hello,For STM32U5A5QJI6Q, can we use a Normal SPI Flash instead of Octal SPI Flash? We are asking this question as we want to use Normal SPI Flash to reduce size and cost.

Hi,Recently I started working on stm32F07 microcontroller. I am trying to read sensor value using ADC.Issue: ADC value is keep on changing randomly(means its not holding value).Below is my code. Please refer it and help me to figure out the issue.Clock is 48Mhz.Handler:void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* hadc){ if (__HAL_ADC_GET_FLAG(hadc, ADC_FLAG_EOC))  { adcval = HAL_ADC_GetValue(hadc); volt = 3300 * (*VREFINT_CAL_ADDR)/adcval; // Pressure=volt*adcval/4095;  }}main function: MX_GPIO_Init(); MX_ADC_Init(); /*

Posted on May 11, 2018 at 01:27 Hi ThereI was looking at AN4661, pg 45 where the signal routing guidelines for SDMMC is given. It has the below bullet points when it comes to skew  The skew being introduced into the clock system by unequal trace lengths and loads, minimize the board skew, keep the trace lengths equal between the data and clock. The maximum skew between data and clock should be below 250 ps @ 10mmNow in an FR4 substrate, a general hand wavy calculations has 150ps for a 1inch (25.4mm) of mismatch between two lines. Going by this 250ps comes out to be 42mm of mismatch. So I do not understand what '250ps @ 10mm ' means? Can anyone explain? Also is 250ps @ 10mm specification for high speed mode or default mode. According to

Is there a proper way to implement a float value? When i try to declare a float variable and debug via the variables tab and or live expression (global variable) I keep getting incorrect values in some instances. I have included the float library and enabled -u_printf_float / -u_scanf_foat. 

Good morning, We've been working with the USART connectivity on the H7S3L8 board, since the new CubeMX update added the missing "Hardware Flow Control (RS485)" option :However, after connecting a sensor that we know is responding (tested through a different F7 board and on the same board with an oscilloscope), I was not able to get anything when using the HAL methods (either with interrupt, or in the simple blocking mode) :Here is our configuration :

Hello STM Community,I am currently working on a project using an STM32F407 microcontroller with LWIP and MQTT to connect to Azure IoT Hub on the secure MQTT port 8883. I am encountering an issue with the mbedtls_x509_crt_parse function when trying to create a TLS configuration. The error message I receive is mbedtls_x509_crt_parse ca failed: -15104 0x3b00 Failed to create TLS configuration. Code Snippet: const char azure_root_ca[] = "-----BEGIN CERTIFICATE-----\r\n" "MIIDjjCCAnagAwIBAgIQAzrx5qcRqaC7KGSxHQn65TANBgkqhkiG9w0BAQsFADBh\r\n" "MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3\r\n" "d3cuZGlnaWNlcnQuY29tMSAwHgYDVQQDExdEaWdpQ2VydCBHbG9iYWwgUm9vdCBH\r\n" "MjAeFw0xMzA4MDExMjAwMDBaFw0zODAxMTUxMjAwMDBaMGExCzAJBgNVBAYTAlVT\r\n" "MRUwEwYDVQQKEwxEaWdpQ2VydCBJbmMxGTAXBgNVBAsTEHd3dy5kaWdp

Hello everyone,I'm currently working on a project where I'm interfacing the KSZ9893 Ethernet switch with an STM32F427 microcontroller. The setup uses the RMII interface for data communication and I2C for management.Issues i am facing:1.unable to ping the MCU.2.Upon reading the status register of the KSZ9893, I'm getting a remote fault indication.3. reading linkstate also shows link downCould someone help identify potential issues or suggest further debugging steps.Are there specific differences in handling Ethernet between STM32F427 and STM32F469 that I should be aware of?What could be causing the remote fault, and how can I resolve it? Any insights or guidance would be greatly appreciated. Thank you!  

Posted on January 29, 2015 at 08:35Hi!I'm trying to implement USB High Speed Host on STM32F405 micro. I use IAR and corresponding examples for USB Host. Playing with examples, I had success in sending Bulk, Interrupt and single Isochronous packets.Now I'd like to send Isochronous OUT Multitransactions, that is when up to 3 packets are sended during 1 microframe. I know that in this case DATA0, DATA1, DATA2 and MDATA pids are used. But searching through the all example code I can not find any mentioning of MDATA, that seems strange. Maybe, it is not supposed to use that type of transfers...So, my questions are:1. Is it possible to implement ISO Multitransactions in STM32F4xx ? I hope to transfer three packets of 1024 bytes each - is it real?2. Are there any working examples of code for this case?Thanks in advance!

Dear community,It is now public and available at distributors : https://www.st.com/stm32n6

Hello!I have developed a firmware for the STM32H745 where I have communication between the two cores. I am using a specific ring buffer library and the semaphore method. Meaning:First core gets the semaphore, puts something into the shared memory, releases the semaphone, second takes the semaphore, reads the data etc etc. All in all, that works very nicely. I just went and developed a bootloader, because I wanted to enable flashing via a specific protocol. It works and boots the application firmware. But, unfortunately, the core communication doesn't work. I am not sure what could be the problem as the shared memory is at 0x38000000, which is not deleted or touched via the bootloader. The bootloader sits at 0x08000000 and 0x08100000; The application sits at 0x08020000 and 0x08120000;What are some things that are connected to the

Hello,I am trying to use infineons S26KL128SDABHI020 HYPERFLASH memory with a STM32H562VI microcontroller.For now I am just trying to do a simple write and read manually to make sure that everything is working.I use the OCTOSPI module with Hyperbus-mode and execute the following in the main-function. /* USER CODE BEGIN 2 */ uint8_t data_storage[125] = {0}; uint8_t receive_storage[125] = {0}; HAL_StatusTypeDef ret; XSPI_HyperbusCmdTypeDef command; /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ data_storage[0] = 0xAA; data_storage[1] = 0x0; data_storage[2] = 0xFB; data_storage[3] = 0x0; command.DQSMode = HAL_XSPI_DQS_ENABLE; //HAL_XSPI_DQS_DISABLE //HAL_XSPI_DQS_ENABLE command.AddressSpace = HAL_XSPI_MEMORY_ADDRESS_SPACE; //HAL_XSPI_MEMORY_ADDRESS_SPACE; //HAL_XSPI_REGISTER_ADDRESS_SPACE command.AddressWidth = HAL_XSPI_ADDRESS_32_BITS; command.Address = (0x00000000); //maxim

Hii....i AM WORKING ON stm32l475rg MCU. i want to use two different timers for measurement of two different PWM inputs signals. for this one i am using capture call back function but i am facing problem to measure duty cycle of both channels at a time.     #include "main.h" float t1=0.00; float t2=0.00; uint32_t frequency=0; volatile float duty_c=0.00; float t1a=0.00; float t2a=0.00; uint32_t frequency_a=0; volatile float duty_c_a=0.00; void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim) { void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim) { if(htim->Instance == TIM3) { if (htim->Channel == HAL_TIM_ACTIVE_CHANNEL_1) { t1 = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_1); if (t1 != 0) { t2 = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_2); frequency=80000000/t1; duty_c=(t2/t1)*100.00; } } } else if(htim->Instance == TIM2) { if (htim->Channel == HAL_TIM_ACTIVE