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Hi ST.​I'm using STM32 L4P5 as a Master in I2C.​slave device is slow to write data, so I did the slave device do clock stretching for a moment.​Is there any enable related to clock stretching on L4P5?​If so, what's the way to enable it?​thank you​

Hi, Im developing an app that use more than one ST25R3911B-Disco reader boards at the same time and I need a way to differentiate between them. As such, does anyone know if I can use any of the command provided by "ST25R3911_Interface.cs" file and if so, what is the syntax to do the following:1) get STM32 UID2) IdentifyPlease do help. p/s: My last resort is to figure out using "DISCO-STM32L4x6" firmware folder but i hope there is a faster way.

I am starting a new project on STM32H7 and would like to start using AzureRTOS.I have a very primitive example on github here : https://github.com/c4chris/H745-Test I thought I could simply replace FreeRTOS with AzureRTOS on both cores, but so far I failed, I probably do something wrong but I can't figure out what...Thanks for any helpKind regards,Christian

Hello, thereI was not able to use the NJTRST (PB4) pin as a general GPIO input pin. I googled and other people having the same issue using the macro: __HAL_AFIO_REMAP_SWJ_NONJTRST()to remap the NJTRST pin. Yet, this macro is not available for the STM32L431 that I am using. I use STM32CubeMX to generate the baseline codes. My questions are:I never used JTAG to debug the stm32 before, and I don't recall ever having trouble configuring this particular pin (NJTRST) to be an GPIO input pin. Have I simply been ignorant until now ?If there is indeed a need to remap this NJTRST pin before using it as an GPIO input pin, how do I do that without the macro mentioned above ?Thanks,Eric

Hello Folks, We intermittently see an "invalid protocol - 0x83' error while reading data.send_cmd 0x04 0x04 0x16 0x00 0x00 0x00rcv_hdr 0x83 0x00This happens intermittently and I have not been successful in reproducing the error. Usually a restart or connect helps to resolve the error.Any pointers on what is causing the error and how to reproduce it on a testing environment?Best Regards,Abhi.

I want to replace a 5114 or equivalent SRAM with the M48Z02 NVRAM to do away with batteries. As the 5114 has 4 data lines, the M48Z02 will have 4 'spare'. I want to pull those low, as well as A10, so if I need to, I can then use them for a second 5114 to allow access to the top half of the M48Z02 by setting a jumper on A10 to take it High. I can't determine the source current on the data pins and A10 from the data sheet, to be able determine a Pull Down Resistor value. There are four I values in table 8, 1uA, 2.3mA, 3mA and 80mA, but which one is the data source current. Thanks in advance.

Hello.I'm testing ADC with DMA on STM32G071. I wanted to have interrupt on transfer complete, but I had trouble clearing TCIF flag in ICFR register. Even if I cleared the bit, ISR was entered again immediately. I don't have circular mode set neither on ADC nor on DMA.I checked, how it is done in HAL drivers. First, TCIE is cleared and only then TCIF is cleared, although Reference says, that TCIE must not be written, when channel is enabled.Can the bit be cleared, or is there some better way how to stop ISR to be called immediately again and again?STM32G071 reference, section 10.6.3"Bit 3 TEIE: transfer error interrupt enable0: disabled1: enabledNote: this bit is set and cleared by software.It must not be written when the channel is enabled (EN = 1).It is not read-only when the channel is enabled (EN = 1)."stm32g0xx_hal_dma.celse if ((0U != (flag_it & (DMA_FLAG_TC1 << (hdma->ChannelIndex & 0x1cU)))) && (0U != (source_it & DMA_IT_TC))) { if ((hdma->Insta

Hi,first I want to say that STM32CubeMonitor (I am running 1.1.0) is a really fantastic debug tool, and it was a really good idea from ST do use nodered for this.It makes many debug tasks A LOT easier than before and it is really a lot of fun to play with. Well done!Now I would like to read in data not only from the MCU registers and variables, but also from the serial port of my MCU.For this I tried to install the node-red-node-serialport package (0.11.0).Unfortunately, with this package I get a lot of error messages in my console window:  11 Sep 16:55:53 - [warn] [node-red-node-serialport/serialport] Error: The module '\\?\C:\Users\rausch\.STMicroelectronics\stm32cubemonitor\node_modules\@serialport\bindings\build\Release\bindings.node'was compiled against a different Node.js version usingNODE_MODULE_VERSION 72. This version of Node.js requiresNODE_MODULE_VERSION 73. Please try re-compiling or re-installingthe module (for instance, using `npm rebuild` or `npm install`).Neit

Hi Community,We send to manufacturing PCB to our supplier but he has a problem with the mark(attached) of the sensor IIS3DWBTR, and we want know if the brand is correct for component, we try to read the image as Qr Code and result is 780270TU01RY, but this code isn't enough to check the correct component.Please someone help us

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Hi, i am trying to implement CAN Protocol in STM32F103C8 Controller in Normal Mode 1) not knew what should be the hardware required for implement Can protocol2) is their any bug in stm32cubemx code generate using library 1.8.0

I am trying to jump from bootloader from application, I tried the methods given here(adapted to jump to application from bootloader) and here.I am always getting hardfault on executing the setmsp call. The disassembly of the __set_MSP translates to LDR      R3, [R4]MSR      MSP, R3Where the contents of R4 is 0080 2000, which is the application start address, and contents at address 0x00802000 is 0x24080000 which is the stack pointer value. The fault bits set on hardfault are PRECISERR at address(BFAR) 0080 2000. Don't know how to solve this.

I am trying to replace BME280 with this MEMS sensor from ST LPS225HB. The chips are pin to pin compatible except INT_DRDY pin. I dont want to know when the data is ready because my f/w takes care of data update periodically. Usually my application doesn't see too much change in pressure and temperature measurement. Kindly let me know what will happen if the pin is directly shorted to ground. Will it damage the chip?

I'm working with the STM32MP157C-DK2 dev board and I've noticed that sometimes when powering up the board there is a 20-30 second delay where I don't even see the boot up messages. It's doesn't appear to be U-boot related either. Has anyone else notice this? and if so were you able to fix it?

Hi, I'm using STM32L4R5 and I'm planning to use the HSE, and already selected a crystal (Abracon LLC - ABMM2-8.000MHZ-E2-T https://abracon.com/Resonators/ABMM2.pdf).Freq - 8MHzCL1=CL2 = 24pFgmcrit = 0.4548Gain margin = 16.49For external resistor Rext, it says "If the power dissipated in the crystal is higher than the value specified by the crystal manufacturer, the external resistor RExt becomes mandatory to avoid overdriving the crystal. If the power dissipated in the selected quartz is lower than the drive level specified by the crystal manufacturer, the insertion of RExt is not recommended and its value is then 0ohm."How do I know the power dissipation of the crystal? And is Rext necessary?Thanks.Oscillator design guide - https://www.st.com/resource/en/application_note/cd00221665-oscillator-design-guide-for-stm8afals-stm32-mcus-and-mpus-stmicroelectronics.pdf

I have noticed what might be a bug in the updateItemCallbackHandler() in my screen's ViewBase file where the itemIndex consistently moves ahead 1 index when I swipe up. /* Scroll Wheel Item Update response to swiping is generated by TouchGFX */ void ModeScreenViewBase::updateItemCallbackHandler(touchgfx::DrawableListItemsInterface* items, int16_t containerIndex, int16_t itemIndex) { if (items == &scrollWheelModeListItems) { touchgfx::Drawable* d = items->getDrawable(containerIndex); ValuesMenu* cc = (ValuesMenu*)d; scrollWheelModeUpdateItem(*cc, itemIndex); } else if (items == &scrollWheelModeSelectedListItems) { touchgfx::Drawable* d = items->getDrawable(containerIndex); ValuesMenu* cc = (ValuesMenu*)d; scrollWheelModeUpdateCenterItem(*cc, itemIndex); } }During debugging, I noticed my value for swiping down to decrement by 1 but swiping up increments by 1 twice initially. The function scrollWheelModeUpdateCenterItem(), which references itemIndex, is call

I am interested to know the key differences between the VL6180 and VL6180X ToF sensors.I understand that the VL6180 has no ALS and also it appears to operate over a longer range.Is it as accurate in the 0-100mm range as the VL6180X?Thank you

Hello,I've got a STM32H745BI on custom board and I cannot get it working. The program always jumps to the error handler at while((__HAL_RCC_GET_FLAG(RCC_FLAG_D2CKRDY) != RESET) && (timeout-- > 0)); if ( timeout < 0 ) { Error_Handler(); }I've found in the reference manual that D2CKRDY is D2 domain clocks ready flag, so it's probably some sort of clock issue. I'm using the internal oscillator. What could be wrong? Thanks :)

In the pack FP-AUD-BVLINKWB1, BLE audio streaming example provided with Opus codec, will you be also providing similar example using new LE audio standard with LC3 codec?

We would like to use the ST25RU3993 in device side usage as described in the ST UHF library manual. Therefore we installed the STSW-ST25RU-SDK Firmware and build it with the TRUE STUDIO. Unfortunatly the given function docycleinventory does not show the tags which are close to the Antenna.We set the programm to use the internal PA and the antenna 1. The frequencyprofile is europe and continious modulation is also active. We log the cycleData variable to know if the inventory found some tags. Could you please tell us what our mistake is, or if there is a missunderstanding, on what this function does?Is there a better way to do inventory etc. than wive the given do cyclicinventory? We found out that we could use the build in Stuhfl_evalApi functions. Unfortunatly we were not able to find good information on how to use them. If we trie them with the init values, the firmware jumps in to an infinit loop. Some examples on how to use the Stuhfl_evalApi functions would be great. And the given

Dear Community,can someone advice a min 8Mbit psram for the STM32F479?I only find some who has address pins up to A20 but the uc has only up to 16 or did I missunterstand something?best regards

Dear ST member,I attached a piece of my schematics design. Can LIS2DH works with pins 3 (SA0) and 4 (CS) not connected?Regards

Hey, I'm trying to get some temperature readings from LM35 sensor and I'm using "blue pill" for this little project and of course ADC. The problem is that I am getting wrong readings, approximately half of the real value. I know that the sensor is good because I tested it with arduino nano and well it gave me right values. void ADC(){ error= HAL_ADC_Start(&hadc1); if(error!=HAL_OK) { i=1; } error=HAL_ADC_PollForConversion(&hadc1,1); if(error!=HAL_OK) { i=2; } i=3; Adc_Value = HAL_ADC_GetValue(&hadc1); Reiksme=(Adc_Value*3.3)/(4096*0.01);HAL_Delay(1000);}here is my little function to get those values. Any ideas why it doesn't work on this mcu?

HI,I am using a stm32l0 series, I want to do a dual bank upgrade but I don't how to enable the dual bank mode in IDE. I found some document show me some key word like "nDBANK", DBANK, but i have no idea how to setup.

Recently, i was trying to integrate the USB-PD library from ST with the support for the STUSB1602 IC that we have on our custom hardware. I found out that the precompiled library from ST supports only the Cortex M0, M33 and M4 MCU's.... Why is that? I really need help for integration of that lib with Cortex M7 to be able to make my custom hardware charge faster on the USB-C. Thanks,