STM32 MCUs Products

Hi,I am at the beginning of my STM32F756VGH6 register programming journey. I have already setup everything, and now I am at the led blink (using a logic analyzer for measuring the time intervals). I decided to make a simple blocking delay function out of a basic timer. The reference manual of STM32F756VGH6 describes the basic timers as really simple and beginner friendly peripheral. I did my best to follow the datasheet and common sense. However, the timer is completely unpredictable right now... Increasing or decreasing the counter prescaler results in some 1.5x or 2.3x incremental steps (prescalers can only by round numbers.) I am not sure is my timer 6 primarily fed with 50 MHz or 100 MHz, because APB1 clock have 2 derivatives, one dedicated only to timer peripherals, so I was going out to find it out by experimenting with the delay value. However, giving the delay function variable of only "1" results in some 6.167 us delay, which is orders of magnitu

Hello,I've got a setup where I put the STM32 into STOP mode, with wake-up on ADDR match on I2C.SYSCLK is PLL 32 MHz.APB = 32MHz.I've configured I2C to use HSI, and enabled STOP_WUCK.(The I2C uses DMA).If I enable HSI16KERON then the device responds as normal to back-to-back I2C transactions. i.e. if I want to access registers A, B, C. (Write followed by read) This is fine. However when this is disabled it seems to only be able to respond to one transaction (i.e. A is fine, B and C are missed). Is this expected behavior? If I put a delay of about 20us it also seems to resolve the problem.

Hi, i need to build a system that has two physical USB ports:- USB-Host: Type-A USB2.0 HID device to connect an external Midi-controller- USB-Device: Type-C USB2.0 or USB3.x to act as a multi-channel audio sound card, and also HID device (MIDI controller) at the same time- Fast CPU to perform audio DSP, STM32H7 with 480 or 550MHz would be fine.- Micro SD card connectorI can not find a way to setup an STM32H7 in CubeMX to have two physical USB ports, as there is only one USB_OTG_HS peripheral available. Did i overlook something here?  I prefer programming in C/C++ on the bare metal CPU and not using RTOS or embedded Linux. I was thinking of using an STM32MP135DAGx instead of the STM32H7 and program it bare metal, but this would require to interface an external FLASH and maybe also a DDR RAM, which i have never done before. I suppose at least a FLASH is necessary?Looking forward to any suggestions :)

Posted on June 15, 2015 at 12:57 Hello I am a beginner in using STM32 devices, so please tell me if I am doing something incredibly wrong here. I am trying to enable DMA for SPI on STM21F411RE but I keep getting TEIF error on the SPI3 channel for DMA1 Stream 5. Here is DMA initialization code: /*******************************************************************************************************************/ // DMA for SPI3: DMA1, Channel 0, Stream 5 DMA1->HIFCR = 0xffff; DMA1->LIFCR = 0xffff; // clear interrupt flags for all streams RCC->AHB1ENR |= RCC_AHB1ENR_DMA1EN; // Enable clock for DMA1 DMA1_Stream5->NDTR = 1; // One data item per transfer (1 byte) DMA1_Stream5->PAR = (uint32_t) &SPI3->DR; // Peripheral address register (address of SPI3 DR) // FIFO disabled (direct mode) SPI3->CR2 |= SPI_CR2_TXDMAEN; // Enable DMA for SPI NVIC_EnableIRQ(DMA1_Stream5_IRQn); // Enable DMA interrupt for the stream DMA1_Stream5->CR

Hello everyone, as port of my role I am looking form SDIO comprehensive course. Can be either online or not. If any of the members can give a recommendation on how to ramp up well on SDIO protocol / use cases / specs / etc. it will be of great help. Thanks in advance

  When I was using Cube MX software to generate LWIP examples for STM32F107, using RAW mode was very normal. But once FREERTOS  lwip is selected through CUBEMX, basic PING communication cannot be achieved. I am wondering if there is anything to pay attention to in the generated software, but I have been unable to find it. I really need help. Thank you. Here is my CUBEMX configuration diagram, and I hope you can point it out to me. I am using STM32F107VC dp83848  

Hi.I'm looking for some answer which I can not find anywere.What is the time between instruction execution time consisting of writing '1' to GPIO->BSRR of any pin and port and real mcu pin state in case when HCLK is e.g. 72MHz and APB2 is 4,5MHz (APB2 prescaler is 16).(F1  series is just example) 

As i state in the title, what is the best way to detect a connection to a console app on a pc?I want to include a while loop in my program, that stalls the main program until the user establishes a connection and the program proccedes to the super loop.Is there a function or a variable that detects the conection and returns true or false respectively ?SHould i try to create a handshake between the two ?

Hello, I am using STM32f407IGT6 with Keil uvision and HAL library. When I try to connect the device with ST-Link and flash the software using the JTAG interface, I always see "can't reset the core" as the error.BOOT0 - Connected to GNDBOOT1 - Connected to VCCCan someone please help here?

Hello guys. I'm fairly new to stm and i've mostly worked on a pico.The thing is that i want to create a programm with the following function.The user sends a character and then a string from a python app on my pc. The first character is a pseudo handshake, meaning that if the received character is lets say 'A', the stm should store the string on a buffer array and print it. I've implemented this program by using the get_char function on the pico. Can i implement this on an stm by using something similar or do i have to use multiple instances of the HAL_UART_RECEIVE_IT  function , since i also want the super loop to also implement an adc reading, and the  HAL_UART_RECEIVE is blocking ?

Hi, I want to make I2C By GPIO I/O Ports Using STM32F103RBT6 64 Pins.run my source code result is above figure.When I2C Input Read time, It Can’t read data how can I get input data?    Start_Setup_Time(); // b7 ~ b1 Addr + bo_wr + ack Setup_Addr(0xA0); // ucReg Addr uint32_t regi_addr = 0x16; Setup_Regi_Addr(regi_addr); // Start SDA_Up(); SCL_Up(); TIMER_us(50); Start_Setup_Time(); // b7 ~ b1 Addr + bo_wr + ack Setup_Addr(0xA1); uint32_t temp = 0; IO_Change(0); TIMER_us(50); for(uint32_t idx = 0; idx<8; idx++) { SCL_Down(); TIMER_us(t_low);

I found a very serious problem while using BOR, which caused my program to be erased innocently.At least 0x0800 0000-0x081f ffff is like this,This is the result obtained by jlinkI need to use the BOR function when I power on, originally this function is to prevent me from abnormal power failure during the power onThe result is that an abnormal power failure of the program during the configuration of BOR will cause all the contents of my internal flash to be erasedThis feature did solve another problem I had, but this new one is much more serious.This is the conclusion that our team has come to after many tests, and we suspect that this will be the case when configuring other option words.I hope you will respond to this matterthanks The following is my BOR configuration:if((FLASH->OPTCR & FLASH_OPTCR_OPTLOCK) != RESET){/* Authorizes the Option Byte register programming */FLASH->OPTKE

Posted on October 28, 2017 at 21:00 Custom board based on STM32F429ZI with Microchip USB3300-EZK HS PHY. The clocks and USB connections modeled on the STM32429I-EVAL1 schematic. I've verified that the CubeMX-generated code for my board looks just like what is generated for the EVAL1. The EVAL1 code works. At least, up through USB_CoreReset(). At startup, the code calls USB_CoreInit() which calls USB_CoreReset(), both instm32f4xx_ll_usb.c. From USB_CoreReset(): /* Core Soft Reset */ count = 0U; USBx->GRSTCTL |= USB_OTG_GRSTCTL_CSRST; do { if (++count > 200000U) { return HAL_TIMEOUT; // <<<--- THIS LINE ALWAYS HIT } } while ((USBx->GRSTCTL & USB_OTG_GRSTCTL_CSRST) == USB_OTG_GRSTCTL_CSRST); return HAL_OK; �?�?�?�?�?�?�?�?�?�?�?�?�? Does completion of that reset depend on the 60MHz PHY clock from the USB3300 (USB_OTG_HS_ULPI_CK input to STM32F429) being active? Any

Hello, i ordered a STM32F429ZGT6.Now i try to identify the revision of the chip i got.The marking on the package seems to have changed - there is no ARM Logo anymore.And where the revison was printed in the past there is now a QR-Code.Is 340 the date code? That would mean probably 2023 week 40. 

Hello, I am using a STM32F334 for a project where I am reading several analog channels, specifically connected to thermistors. I am using DMA to read the analog channels and also sending this data out on UART via DMA.  I am seeing some weird jumps in the data, which also correspond with longer than normal intervals between sending UART data. It seems like only analog data is doing this and I'm wondering why. Does it maybe have something to do with DMA? I have different priorities set for the DMA streams in the STM32Cube project configuration.  I am sampling the internal temp sensor channel, Vref, and Vbat channels, if that is useful. I have the longest sampling interval set as well.  Any help or tips appreciated.   

Hi,I have an STM32H747IGT6 that I wish to:Continuously sample 4096 ADC samplesTransfer each sample from the peripheral to memory using DMATrigger an interrupt at the end of the conversionsAfter the CPU operates on the stored data, restart the process at item (1)The process works fine through (3) with the ADC configured as LL_ADC_REG_DMA_TRANSFER_LIMITED and the DMA configured with LL_DMA_MODE_NORMAL. However, I can't figure out how to restart the DMA / ADC. Can anyone offer guidance on how to restart a one shot DMA transfer to memory from an ADC?The ADC conversions are triggered from a timer. Thanks!

 I work with a 64 bit linux and a stm32f411ceu microcontroller.Unfortunately there is no detection under linux from the uart port. Are there experiences or sources? 

I was unable to configure ADC1 to measure a "4 channel sequence" and then generate an interrupt.I am using the injected result registers to read the values in the ISR.Adc_Value[0]= ADC1->JDR1;Adc_Value[1]= ADC1->JDR2;Adc_Value[2]= ADC1->JDR3;Adc_Value[3]= ADC1->JDR4;All values show zero! Can anyone provide an example code for reading injected results + interrupt?Alternatively the DMA may be used, but when I try to use regular/non injected results via DMA, I am not able to generate an interrupt anymore! The sequence is triggered by TIM1 at every 15.8 uS.

Hello,I would like to know whether I understood the application note about the Vcap pins correctly. If there are 3 Vcap pins on the package, then 2 capacitors should be placed and one has to be connected to another. I'm not sure about this connection.

Hello guys,In some of the products we developed with STM32F429, we received the write-protected error I mentioned in the image. I know how to turn off write protection, but I can't figure out how it activates independently. However, there are also malfunctions in other parts of the products on which I receive this error.Footnotes:ROP Level 0, BOR Level OFF in option bytesThere is a powerful capacitor in the input power; it takes about 50ms to discharge (I'm not sure if it's helpful information.)  

Heyho,first of all, I know this is a Microchip product, but their forum is rather dead.And I have seen some people here using the KSZ8863RLL. So please bear with me... I'm currently working on a big and complex PCB including the "dual PHY" KSZ8863RLL.In the current datasheet I just found in table 4-1 the info, that MIIM register 0x1D with Link (test) / status info is not supported on PHY1, but only PHY2.Is that a typo? In the following register description table 4-2 the register is listed for PHY1.Here's a screenshot of table 4-1:

On a STM32H745ZI-Q - Board I want to create periodical 4-byte SPI transfers  triggered by a timer. So far I got this working the following way:TIM triggers DMADMA initiates the SPI transfer.However, the SPI transfer timing (CS low) has a high jitter of 100 ns, which is not acceptable.To reduce the jitter: Is there any known way to trigger the SPI transfer start directly by a timer on this specific MCU (from reading the RM, I don't think so)? The data to be transfered could be written to the SPI FIFO in advance by an ISR triggered with a proper delay. 

HI all, I am building a system to control my battery charger.When I power up the system from the DC power supply it work perfectly.But when I power up this with AC power supply it gives below error. What can be the possible error?

 Are there experiences regarding the record of a signal in look to the 64-bit platform linux?Do I need a 32 bit-emulator or something like this?

Hello Everyone!I'm facing a problem with all the examples on this package FP-AI-Vision and my LCD only displays noises. I have the board STM32H747I-Disco model MB1248-H747I-D03 and the display MB1166-A09. I realized that in this package doesn't has the drive NT35510 and this is important for my display to work, because of that I had changed the files STM32Cube\Repository\FP-AI-VISION1_V3.1.0\Drivers\BSP\STM32H747I-Discovery and STM32Cube\Repository\FP-AI-VISION1_V3.1.0\Drivers\BSP\Components to include all packages inside STM32Cube_FW_H7_V1.11.1. Also, I had modified  the file stm32h747i_discovery_conf_template.h to include USE_LCD_CTRL_NT35510 1U and add the correct include path on the project. I had try to debug my code and it seems that the code is runing in this method: