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Posted on January 18, 2018 at 17:30The original post was too long to process during our migration. Please click on the attachment to read the original post.

Posted on September 27, 2017 at 07:16My EEPROM is write protected. How can i disable the password that has been implemented before?

Posted on October 10, 2017 at 20:07Is possible raw access (non NDEF) to read/write memory bocks in M24SR64-Y?#memory #m24sr64 #raw-data #rfid #nfc

Posted on April 26, 2017 at 23:14Hi, I'd like to use a m24sr device for data transfer in RF->I2C direction (upgrading firmware on a MCU using a NFC phone). Are there any estimates about what bandwidth can be achieved?

Posted on January 21, 2018 at 05:28Hello to all Forum members. I would like to know how can I write a variable (e.g. of 16 bits) directly to any GPIO port using the HAL API provided by STM32Cube Classic HAL. Currently I'm using Keil uVision. I've created a new project and selected STM32F429ZI device (NUCLEO-F429ZI Board). In the Software components dialog I've selected Device -> STM32Cube Framework (API) -> Classic and inside STM32Cube HAL the sub-components Common, Cortex, GPIO, PWR and RCC. Everything compiles without problems but I'm unable to find a function to write a variable to a port. Previously with Peripheral Libraries I just use the formuint16_t myVariable = 0xABCD;GPIO_Write(GPIOB, myVariable);and everything is ok, but with Cube HAL I cannot found anything similar.I have used the function HAL_GPIO_WritePin(...) to set/clear groups of bits, but it does not fits my needs in this case.Any ideas on what to do?Thanks in advance. Yosmany.#hal-gpio

Posted on January 20, 2018 at 14:55I need to develop an isochronous type USB firmware to transmit real time data to computer, but I dont know where to start. My question is What book/article/blog is enough to read to start developing a usb firmware over stm32P.S: I'm not really familiar with USB specifications. But I want to know what is really required to learn to develop a new firmware. I know there are documents about usb specifications but I think those are overkill as some functions are already handled by hardware and HAL#usb #stm32

Posted on January 20, 2018 at 16:48Hi All,I'm going to be building a motor control circuit, and what I would like is to be able to monitor the voltage and current going into the motor.Was going to use the STM32F108's inbuild ADC to measure this, so I am limited to an input voltage of ~3.3Vs - the motor is going to be connected to a 12V @ ~2A power supply.From a datasheet that I found on the web, I saw that I can use a potential divider to step down the voltage to within the ADCs input range - Datasheet on the LTC2991 p.25 - shows a circuit with a 0 to 40V & 0 to +/-2.2A power supply.I understand how the calculation for the voltage resolution is done - its the inverse of the potential divider multiplied by the single point resolution.I have NO idea how the current resolution is calculated and was hoping that someone within this community might be able to educate me on what I am missing in getting to the number stated on this sheet.Regards,  Thomas

Posted on January 09, 2018 at 14:50Hello, this concerns CubeH7 1.1.0.Simple app with 2 FreeRTOS tasks:task #1 sends data continously via Ethernettask #2 calls   i.e.int waiting_time=0x1000;HAL_SPI_Receive(&hspi2,buf,10,waiting_time);to receive 10 bytes or whatever.Thers is no SPI client connected.The first task is affected by the waiting time and waits as well, no RTOS behaviour anymore !The delay depends on the waiting time. This does not happen when using SPI3 (both are identical)HAL_SPI_Receive(&hspi3,buf,10,waiting_time);- Joerg -

Posted on January 17, 2018 at 00:41I am currently trying to scan and log advertisement data using STEVAL-IDB007V1. Advertisement data will be coming out of separate BLE compatible module. Would this be possible using BlueNRG GUI and python script? Could anyone point me to a right direction for this? Thank you#ble #steval-idb007v1

Posted on January 19, 2018 at 06:29Can i have programming tutorials or materials related to STM8S103F3 and STM8S003F3. Thanks & Regards,Prasad.

Posted on February 05, 2017 at 22:11In file included from /Users/john/STM32Cube/Repository/STM32Cube_FW_F7_V1.6.0/Projects/STM32F769I-Discovery/Demonstration/Modules/audio_player/audio_player_app.c:49:0:/Users/john/STM32Cube/Repository/STM32Cube_FW_F7_V1.6.0/Projects/STM32F769I-Discovery/Demonstration/Modules/audio_player/audio_player_app.h:58:35: fatal error: ..\Common\audio_if.h: No such file or directory

Posted on January 10, 2018 at 13:53Hi,I'm working wiht the M24LR16E dynamic tag in my application and tried to read this tag with your iOS App NFC Tab. In your user manualUM2274 this tag 5 type is listed that the app can read out NDEF text. For test I used the M24LR-discovery kit and used this taghttp://www.st.com/content/st_com/en/products/evaluation-tools/product-evaluation-tools/st25-nfc-rfid-eval-boards/st25-nfc-rfid-eval-boards/m24lr-discovery.htmlBut I can't read out the tag with my iPhone 7. The Display of the tag of the M24LR-discovery kit shows the NDEF Message when I hold the phone to the antenna but the app can't read the tag. Why it's not possible to read out the tag? What can be the reason?                                                &nbs

Posted on September 21, 2017 at 14:57We want to switch the RFID chipset of our RFID products to ST25RU3993. I wonder whether there are sample software codes to speed up our development process. 

Posted on January 17, 2018 at 17:23Hi, I'm a new starter with ST MCU.Are there training/tutorial about SPC5Studio?Many thanks,Roberto#spc5studio #training #tutorial

Posted on January 16, 2018 at 16:42Hey everyone,I'm using the stm32f722ze and CubeMx and have gotten my input capture working. Essentially, when every rising edge is detected, the timer triggers a DMA event and stores the GPIO pins value to memory. This happens on every rising edge, although I'd like this to only occur every 8 rising edges. Is there anyway that I can get the input capture to be triggered every 8 rising edges instead of every rising edge?Thanks in advance for any help!#nucleo-stm #cubemx #timer-interrupts #input-capture-mode #stm32f7-timer

Posted on January 18, 2018 at 03:32I have an STM32F429 dev board.  I've been playing around with the GCC version of the STemWin example that comes with the STM32CubeF4 package.  I've tweaked the Hello World example to do something entirely different - making some animated graphics appear on the STM32F429 LCD screen. I'm now trying to use the GUI_MEMDEV_ functions.  In order to create a MEMDEV of the entire LCD screen I need to increase the size of the GUI_NUMBYTES &sharpdefine in GUIConf.c.  When doing so, I get the following GCC linker error:STM32F429I_DISCO_MB1075.elf section `.bss' will not fit in region `RAM'So, I understand I need to increase the size of the BSS section.  This is where I run into problems.  I understand bits and pieces of the linker script but I'm far from being an expert.For example, the linker script has the following at the top:MEMORY{RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 192KCCMRAM (rw)

Posted on January 16, 2018 at 01:33Hello,I've got a simple control loop and I need to track the elapsed time of each loop.  Duration will be anything from 2u-sec to 500 u-sec.  I'm wondering if there's a system clock tic register or countdown timer I can read each time around the loop to calculate the elapsed time.  I'm sure I could setup a dedicated timer and reset it each time through but thought there might be an easier way reading some SysClock register.   Any thoughts on this?Thanks

Posted on January 17, 2018 at 16:07Where can I find the alternate function mapping for GPIO pins? Normally these can be found in User Manual for a given card, but I can't find it for the NUCLEO-F303RE.  

Posted on May 17, 2017 at 08:36Title says all. There are a plenty of blank space on the welcome screen which could be utilized better:It would be nice if th recent N projects would be listed there, so it would spare a few context menu opening every time.Like it is done in the QtCreator:Adding ability to restore the last session would be awesome.#cubemx #feature-request

Posted on January 16, 2018 at 18:10Or source code of 'ST25R3911B Discovery.exe' (1.1.16.0)Yes, I really want some of it because ST25SDK is not applicable for me.(See my previous question for details)But it is better to just give me some source code - I waiting too long!

Posted on January 16, 2018 at 21:37I am new to CubeMX. How do I configure a pin as and interrupt? Also how do I setup Low Power sleep mode to wake up with WFI using CubeMX?

Posted on January 08, 2018 at 14:32Hello,in your first project we use a STM32F415ZGT without any problems. Then we switch to the smaller version STM32F415RGT in a new design. With the same source code we got some times a hard fault when die MCU is booting up.After two or three days of software and hardware bug finding and trying different versions of CubeMX and F4 firmware we find a solution to disable the Instruction Cache in CubeMX:After that your simple LED blink code runs fine without any hard fault.Errata sheet lists a bug in Revision ''A'' devices for the ART Accelerator: ART Accelerator prefetch queue instruction is not supported  DescriptionThe ART Accelerator prefetch queue instruction is not supported on revision A devices.This limitation does not prevent the ART Accelerator from using the cache enable/disablecapability and the selection of the number of wait states according to the system frequency.Workaround   � Revision A devic

Posted on January 16, 2018 at 15:39Hi folks,I'm a new starter here, is there a section with code example, training, etc?Currently, I'm working on the control of a power electronic converter with a phase-shift PWM modulator.Thanks for any help or advice.Roberto#pwm #power-electronics #phase-shift

Posted on March 08, 2017 at 14:33Hi,I'm having problems with STM32 CubeMX (v4.19.0) during the setup of the ADC2 peripheral (may be a bug...).Even if the number of conversion is ONE, I have two different ranks both pointing to the same ADC channel (please refer to the attached screenshot).I looked into the ioc  and some lines don't convince me (I have only channel 4 active):'...ADC2.Channel-20\&sharpChannelRegularConversion=ADC_CHANNEL_4ADC2.Channel-4\&sharpChannelRegularConversion=ADC_CHANNEL_4ADC2.Channel-8\&sharpChannelRegularConversion=ADC_CHANNEL_4...'Is there any .ioc file cleaner that can fix this behavior?Thanks in advanceFlavio#cubemx-bug

Posted on January 15, 2018 at 18:20My problems same as https://community.st.com/message/10560 The SPC5Studion was upgraded to 5.7.1But I selected SPC56-DISCOVERY(BOARD) , DRIVERS --STM My toolchains is the GNU make builder of spc5studio default.Keep the example codes from code generation...it is giving following errors, - Symbol 'NULL' could not be resolved - Symbol 'uint32_t' could not be resolved - Symbol 'int32_t' could not be resolved - Symbol 'uint16_t' could not be resolved - Symbol 'uint8_t' could not be resolved... I was tried to set in C/C++ general ==> Preprocesseur IncludeIt cannot be to solved these problems.Can you help me resolve these?Thanks in advance for all your help.Chamberplus #spc56