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So I've got some very basic code for a STM32 to read an encoder using timer 1 in encoder mode.This first routine works fine counting up and down as expected, printing CW (Clockwise) while counting up and CCW (Counter Clockwise) while counting down... The direction of the counter is read by the TIM_CR1_DIR bit with 1 for down.cnt = TIM1->CNT; // if counter counting down encoder is turning CW because i switched the wires if (!(TIM1->CR1 & TIM_CR1_DIR) && cnt != prevCnt) { printf("CCW, count = %d\n", 100 - cnt); prevCnt = cnt; pCnt = 0; } else if ((TIM1->CR1 & TIM_CR1_DIR) && cnt != prevCnt) { printf("CW, count = %d\n", 100 - cnt); prevCnt = cnt; pCnt = 0; } HAL_Delay(50);I thought I could clean it up a bit by taking out some of the redundant lines so I wrote this... But this routine acts really unpredictably sometimes it will print CCW while counting up and visa versa, or it will print CW while turning CCW. I'm fairly new to programming so I'd love

I'm using STM32F091VCT6 controller. I'm tried to BOOT it. MCU does not stand by mode (either low power mode or continuous reset mode). I'm tried by increasing delay on VCC & POR by using 10uf cap of NRST pin also I'm tried weak pull down on BOOT0 pin(47K to 10K register value) also please suggest how I will check exact behave of controller ??

Hello!​I have a SPC58EC-DISP; I set the PWM frequency 20KHz and duty cycle 1%,then it's not output,when set 8%,it's output 2us time;I found that the minimum PWM output time seems to be 2us.now I want PWM frequency 20KHz(50us) and 1%(0.5us) ouput,what should I do?

Hi. Downloaded the latest 4.16 TouchGFX toolchain; latest STM32CubeIDE; latest STM32CubeMX.Selected STM32F429i-DISC1 kit -> imported the Pool Lights GUI. Nothing else. Ran fine on the simulator; runs fine on the target. Generated Code. No errors. Very nice.Wish to interact with CubeMX using this GUI generated project. Compiles without errors on the STM32Cube IDE.Raises many errors with IAR / Keil compilers.Can post more details later today.Any known issues with these toolchains?Thanks.

Hello,I have a use case where a custom container with a ScrollList of items need to be displayed but grey-ed out and disabled (as in not touchable) at the start of the screen transition and only becomes active once a button on the screen is clicked (e.g. an "Edit" button).What is the recommended way to achieve this?Thanks for everyone's time.

New a project for generating code while install the STM32CubeIDE first time. I try to close my firewall but it doesn't work.

Thank you for helping.environment:stm32CubeIDE Ver1.3.0TouchGFX Ver4.15.0Board: STM32F746G-DISCOWhen I step, it just enters the interrupt handlerI can't move on.With STM32F769I-DISCO, there is no such symptom.Is it a problem with the microcomputer?Please tell me how to solve it.

I created an eglfs Yocto build that can run the simple Qt5 demos, but I'm seeing fairly high CPU usage and I'm trying to figure out if the GPU is being used. I pondered that the GPU may not accelerate 2D graphics very well and does better with actual 3D. So, I thought I'd add support for more Qt5 packages and see if the 3d demos ran any better, but I can't get it to build.I'm getting a compiler error while building QT5's ogl-runtime complaining that <GLES2.gl3.h> cannot be found. I'm new to this, but from what I can tell this header should be supplied with the opengl libraries and presumably ST should be supplying that library with GPU acceleration. Or perhaps something else is going wrong/missing?Is it possible to get the Qt5 3D demos to run under an eglfs build? Is there some way to verify if the GPU is being used?Thanks,Jon======In file included from /home/jon/STM32MP15/Distribution-Package/openstlinux-5.4-dunfell-mp1-20-06-24/build-openstlinuxeglfs-stm32mp1/tmp-glibc/work/cor

Posted on June 17, 2014 at 11:27Hi I'm using the M24LR04 in Harvesting Mode to supply an STM32L151. When the uC powers up, it reads data from an sensor and write them to the M24LR. This is than read from an NFC Handheld.My problem is, when the Handheld approaches, first the M24LR starts to communicate with the handheld, before the uC powers up and refreshes the Data. So i want to disable the RF communication until the STM is on. I know there is the M24SR devices which had the RF disable Pin, but unfortunately my App is ISO15693 (and not  ISO 14443).... Is there another possibility... Thanx regards otmar #vout #rf-wip-busy #m24lr #m24lr

I am using an STM32WB55CG in a custom board with SWD interface. When I tried to connect the MCU using STM32CubeProgrammer, the MCU is identified in the Cube Programmer. But, when I tried to program it using the STM32cube IDE, device is not identified. Also, when I tried to erase the flash using STM32CubeProgrammer and also tried to write program through flash Programmer both does not work and shows errors. What is the problem behind it?

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In my own application , I noticed that Flash page erase stopped working once i cleared the DBANK flag in the option bits.While i start debug this, i see a irregularityIt looks there is a difference in datasheet and ST-Link , the datasheet says when DBANK = 0 we use single bank configuration, but the tiptool in ST-link says the opposite. I suppose the datasheet is correct?To debug this issue i downloaded the FLASH_EraseProgram example for the NUCLEO-G474RE board. This example works fine in DUAL bank mode, but i wonder how to test in SINGLE bank mode. i see in stm32g4xx_hal_flash.h this line : #if defined (FLASH_OPTR_DBANK)This checks the DBANK FLAG , and when this is set , the flash HAL defines will be configured for a single bank FLASH ? This seems like a a bug in the hal files?How do i test the single bank flash HAL codes properly , at this moment this is all very confusing?Thank you#if defined (FLASH_OPTR_DBANK) #define FLASH_SIZE ((((*((uint16_t *)FLASH_SIZE_DATA_REGISTER)) == 0xFFF

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Hi,I have NUCLEO-G071RB board . How to calculate 1KHz frequency with STM32G071 Output compare ?My System Clock frequency is 64 MHz .  --Karan

We discovered that the SA0 Input of the IIS2DH of your accelerometers has a very high pull up current.The pull up is about 40 kOhm at IIC adress select line input. If engineers will use two IIS2DH in there design.Than the IIS2DH at adres 0x18, means SA0 is LOW, then this chip will draw 10 to 15 times the normal operational current. For an extreme low power device. This is a very special feature from ST.We would like to know: What is the feature of this pull up Why is it not specified in the datasheets? Wil the IIS2DH soon become obselete?

Hi guys,On USB Host Mass storage mode, I am creating a text file using (f_open(&myFile, "TEST2.TXT", FA_WRITE | FA_CREATE_ALWAYS function.For writing text into the file, I use sprintf(rwtext, "Hello World"); function to write the text into the txt file.Now, What function should I use if I want to log a "variable" that is changing from time to time and write it as a text in a txt file? (Like, X is an input voltage that's changing frequently, and I would like to log this voltage value and save it in a column as txt file in ).Any help is highly appreciated on this.

Hi, I'm new here. Working with STM32F303 and wanting to use the DAC externally and internally with comparators in an adaptive threshold config. Can the DAC be disconnected and the COMP internal + point hold a charge and continue to work while the DAC is changed and connected to another comparator. I will refresh say every 1mS.Plan B is to connect the COMP external pin AND DAC internally together and use an external holding capacitor. Is this possible?Plan C route DAC out to other analog GPIOs (multiplex) and wire to COMPs external pins with external holding capacitors. Looking at the datasheet, seems the DAC out is fixed.So basically how much internal capacitance and impedance do the COMP inputs have?Has anyone here tried it?

Hello!I'm trying to program multiple STM32F432VIT6 MCUs at the same time, from the same computer using many ST-LINKV2 connected via USB.I want it to be automatic so I'm using the ST-LINK Utility CLI to program them via C#.So far I've been able to list all the ST-LINK devices connected to the computer and to program the board when only one device is connected, but when I connect two devices I can not give the program instruction -P the serial number of the device I want to target.I think it should be possible since the ST-LINK Utility Tool has a list in which one can select the target device.I'm following the ST-LINK Utility ManualDoes someone has an idea of how can I achieve this? Thank you!

Hi All,I need to record time stamps in the code, how i can do it? is there any example code is available?Thanks,Basava.

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Without any move, my H3LIS331DL on a MKI153V1 kit, and read from and STM32L4 MCU, gives values around X=1,5 / Y=2 / Z=3 G at 200g full scale.Is that "Zero Offset" normal ?Should I do anything to get values closer from 0 / 0 / 1

Hello! I am trying to get CubeProgrammer to flash a NAND on a custom board.UBOOT detects the NAND chip and mtdparts lists the following:STM32MP> sf probe STM32MP> mtdparts   device spi-nand0 <spi-nand0>, # parts = 4 #: name size offset mask_flags 0: fsbl 0x00200000 0x00000000 0 1: ssbl1 0x00200000 0x00200000 0 2: ssbl2 0x00200000 0x00400000 0 3: UBI 0x1fa00000 0x00600000 0   active partition: spi-nand0,0 - (fsbl) 0x00200000 @ 0x00000000   defaults: mtdids : spi-nand0=spi-nand0 mtdparts: mtdparts=spi-nand0:2m(fsbl),2m(ssbl1),2m(ssbl2),-(UBI)It looks as though the FSBL partition size is 0x00200000 and it located at 0x0; however, when I attempt to use cube programmer with this TSV:#Opt Id Name Type IP Offset Binary - 0x01 fsbl1-boot Binary none 0x0 arm-trusted-firmware/tf-a-stm32mp157c-viper-serialboot.stm32 - 0x03 ssbl-boot Binary none 0x0 bootloader/u-boot-stm32mp157c-viper-trusted.stm32 P 0x04 fsbl1 Binary spi-nand0 0x00000000 arm-trusted-firmware/tf-a-s

Configuration tool auto generated code SystemClock_Config() calls HAL_PWREx_ConfigSupply(PWR_DIRECT_SMPS_SUPPLY). For my hardware i need to use PWR_SMPS_1V8_SUPPLIES_LDO with no voltage scaling. I cannot find where to change the power supply configuration. 

I'm trying to establish communication between a Raspberry Pi and an STM32F407. The Pi is Master and the F407 is a full duplex slave. The SPI is configured with circular mode DMA. When the data is sent from the Pi, I do receive it at the F407. However, the moment that transaction ends, the receive buffer in the F407 becomes 0x00 again wiping away all received data. I'm guessing this is because of the circular DMA?I tried creating a copy of the original receive buffer in the HAL_SPI_TxRxCpltCallback function but that did not work. It seems to get called after the If I configure the DMA in normal mode, the SPI transaction runs once and then stops whereas I want it to run continuously in the background. How do I solve this?