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Hi,I have been reading a few app notes but still a bit confused about some things...A custom board I am working with has an STM32U5G9VJT6Q MCU driving a DSI touch display. The PCB has QSPI and SDMMC but it does not have SDRAM.In the application, the graphics to be displayed are only simple graphics and very slow graphic animation (think 2 frames GIF), no photos and no videos.A few clarifications if someone could please explain:1. What implications and/or restrictions are present because of the lack of SDRAM?2. Can the SDMMC or the QSPI act as the frame buffer given there is no SDRAM on the PCB)?3. if yes, which one would be preferred the preferred choice?4. Considering that it is only simple graphics/slow-graphic-animation, can the images be fetched directly from the SDMMC or the QSPI through the DMA? Thank you :)

hi,I was trying to open Jpeg files from SD card and show them on LCD. LCD works, SDMMC works, I open the File System, I can read if its FAT32, I can read free space etc. But When I want to open a file or create a file on system it fails.* I always get  FR_NO_FILE when I want to read a file.* There is no error when I want to create a file and write something in it. But When I put the SD on PC There is no such file in it.* Also I cannot read the label of the SDCard.* Dcache disable & enable does not change the result.Here is my Code sample :** I've tried "0:" lately but it does not changed anything.  What should I do ?void process_SD_card( void ) { FATFS FatFs; //Fatfs handle FIL fil; //File handle FRESULT fres; //Result after operations char buf[100]; FRESULT res; char buff[20]; int x=0; do { //Mount the SD Card fres = f_mount(&FatFs, "0:", 1); //1=mount now if (fres != FR_OK) { printf("No SD Card found : (%i)\r\n", fres); break; } printf("SD Car

Hi,what are the lowest cost STM32 that support full graphics (static and minimal animation like a progress bar or spin control) with RGB/parallel interface (not DSI nor SPI)?Is there perhaps a comparison table that addresses such display-related requirements to help select a micro?If not, any tips, suggestions or guidelines would are much appreciated.Thank you

Hi folks, I hope you're able to help me out. I need to replace a few of the components in the picture. Sorry for the poor quality.I did of course google the markings but have had no results. - The measurements of the package is 2.4mm x 4.2mm.- To me it seems that in the top-left, is the STMicroelectronics logo.- Next it says "e3" in a circle. Next to that it says "VU" or VO".- The middle line says "DUK".- The last line seems to say "GP944".- The left side if the chip seems to have a line marking polarity.- I believe the component to be either a diode or a uni-polar capacitor.                         Thanks in advance and best regards-Kenneth

Board STM32H7474I-DISCO, TouchGFX V4.24.2.If you keep the analog/digital clock examples running (in the evaluatation board) for (say) 10 minutes then the clock on the LCD screen will be more than 15-25 seconds behind your watch. This is a massive delay: 15-25 seconds delay during 600 seconds is not nothing.Probably reasons (my ideas)The SystemTick (VSYNC = 60Hz, 16.6667ms) is not accurate and it is not generated by an MCU Timer. Hard to believe it.All the examples update the hour/minute/second display (on the LCD) from the TouchGFX's handleTickEvent() interrupt service routine. The update runs once in every second. I can imagine that updating the LCD takes more than 16.6667ms so when the next system tick interrupt occurs the interrupt service is still in service. This way we can miss a couple of system ticks.It would be nice to know which statement is right and how to resolve this issue.I tried to open TouchGFX Academy Tutorial3 example in STMCubeMX and create a new, dedicated timer wi

I am looking for the latest Bill of Materials (BOM) for the STM32 Nucleo F401RE development board. Could you kindly provide the updated document or a link to access it?Thank you for your assistance.

STM32WB5MMG datasheet says ANT_NC should be connected to no-connect pad on board.  But then, example ground plane seems to connect to ANT_NC.  Which is right?

What does this error mean for the I2C interface? I have it on the connection between the LORA E5 Mini and the SI7021 sensor.The debugger stops here:Exactly at his method call:  /* Wait until TXIS flag is set */ if (I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK) { return HAL_ERROR; }    As you can see, the I2C is in the HAL_I2C_STATE_READY.I have four items of the same sensor tested with this LORA device, and all behave the same, so I think a hardware error should be excluded.

I have the following big problem:I had installed previously release 6.2.0 of STM32CubeMX and everything works fine. Then i uninstall this release and update to the new one 6.3.0.Now the programm craches after start. An backgroundprocess at windows for java (OpenJDK Platform binary) appears, but that's all. The program/app window doesn't appear anymore. A reinstallation of the older release 6.2.0 doesn't help.The OpenJDK Platform binary process remains as backgroundprocess "forever".I have also tried out what happen when i start STM32CubeProgrammer: backgroundprocess at windows for java (OpenJDK Platform binary) appears also, but after a short while the process becomes an app. The backgroundprocess disappear.I not really know what i should do now...

HiI'm trying to connect an SD card to my Nucleo U5A5ZJ-Q board using SDMMC peripheral and use it with FatFS library. When I use 1GB card and 4 bit mode, everything works fine. By "works fine" I mean that:1. it passes this FatFS test: http://elm-chan.org/fsw/ff/res/app4.c2. it is able to create a working text file.But there are 2 problems:1. 1 bit SDMMC mode doesn't work. When I'm trying to use it, the FatFS test fails at an SD card write. After clicking around in STM32CubeIDE debugger I found that there is a CRC error in SD callback being set as status, which then leads to a timeout and test fail. This problem isn't critical, because 4 bit mode seems to work, but it worries me a bit.2. 16GB and 32GB cards don't work. They get a bit further (to reading), but fail in a simmilar way (SD callback -> CRC error -> timeout -> test fail). I haven't been able to test 2-8GB cards yet. This is more of a problem, because it's getting harder and harder to get such small capacity cards.The

Looking through the RM0440 and the datasheet on the STM32G4,I can't find information on the maximum recommended frequency for modulCANFD.Or it may be the same as for microcontroller up to 170 MHz?HSE 8mhz -> PllM /2 -> PLLx85 /R /2 ... APB1 /1 -> PCLK1 170                                  or                /Q /2 - > 170   There are also some strange things))Or maybe I don't understand yet.After startup, the registers are set to default values.For different frequencies. 44.4.3FDCAN data bit timing and prescaler register (FDCAN_DBTP)Address offset: 0x000CReset value: 0x0000 0A33..Note:With an FDCAN clock of 8 MHz, the reset value 0x0000 0A33 configures the FDCAN for afast bit rate of 500 kbit/s.The data phase bit rate must be higher than or equal to the nominal bit rate FDCAN nominal bit timing and prescaler register (FDCAN_NBTP

Hi,I tried downloading TouchGFX but even after following the instructions and using the same browser and validating the email and using the same browser, it displays the message below. Where else can I download the latest TouchGFX from?Also:- what is the difference between X-CUBE-TOUCHGFX and X-TOUCHGFX-MPU (second screenshot)- does the latest version include TouchGFX, TouchGFX Designer and all required libraries and code generator in one single package/download?Thank you   

Hi there,I'm looking for development boards that can support I3C at full SDR speed (12.5MHz), and I have the following MCUs that we can try I3C from the AN5879 application note:STM32H5 series.STM32H7R3/7S3 line.STM32H7R7/7S7 line.On the other hand, I found STM32H7B3I-DK, which can work with the integrated peripherals without adding extensions, but it uses the STM32H7B3LIH6QU chip (STM32H7B3), which is not in the list above.Is there any update from the AN5879's release date (June 2024) with I3C-compatible MCUs so we can find more development boards to try I3C?Also, does ST maintain a place to check for updated I3C-compatible MCUs and boards?Thank you,Daniel.

Hello,I am facing some strange errors when trying to analyze any TFLite model. The errors are occurring in the following situations:Situation 1: STM32Cube.AI MCU RuntimeWhen analyzing a TFLite model, it fails and shows an error message: "TOOL ERROR: List index out of range."Situation 2: STM32Cube.AI Neural-ART RuntimeAfter clicking on the Analyze button, it's stuck at 0%. Nothing else happens, even after I wait for 30 minutes.I am using:CubeIDE version: 1.17.0X-CUBE-AI version: 9.0.0 and 9.1.0Please note that all those TFLite models work fine with CubeIDE 1.16.0, X-CUBE-AI 9.0.0, and STM32H7A3.I am attaching 2 tflite models for your reference.

Hi,I want to use ECMF02-4CMX8 as ESD protection and filtering means for a isolated USB 2.0 downstream port design.The chosen connector is a Type C receptacle.My question pertains to pin function of ECMF02-4CMX8.The type C connector exposes two configuration pins, CC1 and CC2.Can I connect CC1 to pin 4 and CC2 to pin 1 ?From the datasheet I know the pin 1 is reserved to VBUS and pin 4 is reserved to ID, however I prefer to assign this 1 pin to CC2, and route VBUS to a separate over-voltage protection chip (MAX14699EWC+).Is my choice correct and safe ?I attach the proposed schematic for the complete interface.Thank you for any helpGabriele

Hello, I am a university student and I am trying to design a development board with the STM32H7S3A8I6. In the past, I've just used the power scheme in the documentation of the MCU for reference, but the power scheme in the documentation (page 153) for this MCU is incomplete (I'm assuming its becasue it's new). I used this "Getting started" guide for the STM32H7A3 and made a few assumptions from past STM32 designs that have worked, but since I cant find any good references or documentation on the matter, I am not confident in my work. Has anyone used this processor before or know where I can find good reference designs to cross check my work? Ive attached my schematic below. I am trying my best to learn best PCB design practices so if there is anything else I can improve on please let me know! Edit ST moderator: moved to the right Destination and added the right labels

Debian version:  debian@sys:~/STM32Prog$ cat /etc/os-release  PRETTY_NAME="Debian GNU/Linux 11 (bullseye)"  NAME="Debian GNU/Linux"  VERSION_ID="11"  VERSION="11 (bullseye)"  VERSION_CODENAME=bullseye  ID=debianVersion of  STM32CubeProgrammer -  v.2.18.0Java version:  debian@sys-lab1:~/STM32Prog$ java -version  openjdk version "11.0.25" 2024-10-15  OpenJDK Runtime Environment (build 11.0.25+9-post-Debian-1deb11u1)  OpenJDK Server VM (build 11.0.25+9-post-Debian-1deb11u1, mixed mode Problems:1. Can't run installation per instruction of doc UM2237    ./sudo SetupSTM32CubeProgrammer-2.18.0.linux    Invoked the above command resulted in a bunch of 'not found' errors    eg.    /SetupSTM32CubeProgrammer-2.18.0.linux: 1:ELF: not found2. Can install a bit further with Java way    sudo java -jar SetupSTM32CubeProgrammer-2.18.0.exe    Invoked the above,

Hi, Team   We are facing issues with test process performed at ICT test station. We are testing driving current to detect Zener Clamp diode 8.2V, the units fail with 2.64688 volts, but this line is connected to comparator TS339I pin 5 that is not power up. When disconnect the pint 5 of this comparator, TS339I, our Zener Diode start works and the voltage 8.2V is present.     Our concern is related with this TS339I that something is affecting Zener's test process when the V+/V- of the comparator are absent, probably the current used for the test, partially is going into the comparator. Do you have information about this behavior and recommendations when this device is tested? Or are there some test recommendations or critical aspects that need to be careful when is under test for these comparators?

MX_GPIO_Init(); MX_SPI2_Init(); MX_USART2_UART_Init(); MX_FATFS_Init(); /* USER CODE BEGIN 2 */ W25Qxxx_Init(); fres = f_mount(&fs,"0:",1); if(fres == FR_OK) { v=9; fres = f_open(&fp, "info.txt", FA_OPEN_ALWAYS|FA_WRITE); } else { v=2; } trying to use spi flash using fatfs .but occur hardfault handler when calling fopen . i am not sure whether it is from fopen or not.

Hai, First let me be clear I'm working on STM32F746ZGT7 customized board so I have to bring up the Display of the board now give me some reference video or documentation.   Thanks.

Hi I want to understand "which register decides whether HSI or HSE oscillator is selected for PLL clock source in STM32F407"(selection of the HSI or HSE oscillator as PLL clock source"B.RAsh

Dear All,I would like to interface an ADC (ADS131M08) with a STM32F407. The ADC datasheet mentions that for better performance, the ADC clock should be synchronized with the SPI clock. Is there any way to achieve such synchronization with the STM? I was thinking about a timer that can give the clock to the ADC and get this timer sync with the SPI, but I don't really see if it's possible and how to implement it.Thanks for your helpBest regards

Hello,I need clarification about the STM32WBA50KG Tx Output power for BLE 5.4.It seems that there's an inconsistency in the value of the Tx Power.This page STM32WBA50 overview  mentions +10dBm.But the datasheet STM32WBA50KG datasheet  mentions +4 dBm (page 62). What is the correct information ?

Hello ST, 1. ds12736 Rev.4 states in Table 24 that the abs. max. voltage on any pin is at least +4.0V (but this may be further limited by an injection current limitation) 2. ds12736 Rev.4 states in Note 4 on p.145: "Positive injection (when VIN > VDDIOx) is not possible on these I/Os and does not occur for input voltages lower than the specified maximum value." 3. ds12736 Rev.4 states in Table 25 that I_inj(pin) is specified as -5/+0 mA on all pins. 4. AN4899 Rev.3 says on p.13: "Positive-injection current is the current induced when VIN > VDD." and "0 mA means that current injection can damage the GPIO and induce STM32 malfunction."   These statements taken together seem to be contradictory. So the question: May STM32L562 GPIO pins be driven in a range from 0 V to 3.3V when VDD and/or VDDIO is unpowered or below 3.3V? The datasheet seems to imply "Yes", but AN4899 seems to indicate the opposite in the context of the specified I_inj(pin).

Hello, this is DK.I am working on a project using stm32f429IIt6.I'm currently having an I2C problem at the end of my project.I2C1 uses PF 0, 1 / I2C2 uses PB 6, 7. The HW PCB completed, and the HW I2C pull up is the same.In I2C1 HAL code, the entire initialization does not work, and if I2C2 is used with the same code, it works well.I am using various Pheripherals such as TIM Interrupt. Is there any conflict?Is there any difference between I2C1 and I2C2?In the TIMER part, it appears to share APB1.