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Posted on January 22, 2018 at 19:15Hello to all. I noticed that in the latest release of firmware for the STM32F7 (v1.9.0) the example application FatFs_USBDisk no longer works. During any fs_open command, an error is generated, and the app halts.This did not happen in the previous version of firmware for the STM32F7 (v1.7.0).I saw in the product release notes that there was an upgrade of components to the entire FatFs structure. I tried to follow the new rules of operation for the new upgrade (i.e - use updated usbh_diskio files, set block size to 512, etc), but still can't get it to run properly.The folder for the FatFs applications is \STM32Cube_FW_F7_V1.9.0\Projects\STM32F767ZI-Nucleo\Applications\FatFs\FatFs_USBDisk.Can somebody verify that they are seeing the same errors as I am seeing here now with this newly upgraded FatFs structure?Thanks so much!!!Chris

Posted on January 23, 2018 at 02:24I want to add crc function in STM32F030RC, so I add HAL_CRC_Init, and related functions. But there is always 'no definition for 'HAL_CRC_Init'' error when link. I have include 'stm32f0xx_hal.h','stm32f0xx_hal_crc.h','stm32f0xx_hal_crc_ex.h', but it seems useless. I don't know why, and how to fix this problem. Please help!Below is my related code./* Includes ------------------------------------------------------------------*/#include 'main.h'#include 'stm32f0xx_hal.h'#include 'stm32f0xx_hal_crc.h'#include 'stm32f0xx_hal_crc_ex.h'#include 'cmsis_os.h'#include 'app_header.h'#include 'app_main.h'#include 'gps.h'#include 'at.h'#include 'network.h'#include 'uart.h'#include 'memory.h'#include 'log.h' ADC_HandleTypeDef hadc;I2C_HandleTypeDef hi2c1;RTC_HandleTypeDef hrtc;UART_HandleTypeDef huart1;UART_HandleTypeDef huart2;UART_HandleTypeDef huart3;UART_HandleTypeDef huart5;/* CRC handler declaration */CRC_HandleTypeDef   CrcHandle; static void

Posted on January 22, 2018 at 16:44I have my SPI3 module configured as a master.  I want it to transmit 8-bit words.  Here is my setup as read from the chip while its executing.  No matter what I do each time I write to SPI3->DR it transmits 16-bits what can I do?  Please don't give any answers involving the HAL libraries as I am not able to use it.Thanks#stm32f-spi

Posted on January 12, 2018 at 14:44#Hi everybody,   I try to connect only the antenna (on a handheld device with a spiral cable) on a CR95HF (inside a control unit). Can you let me know how to calculate the circuit parts with this additional parameter?   In the application note (attached file)   Thank you for your help.   Roger.

Posted on November 03, 2017 at 08:15Dear sirs,we have produced more than 10000 pcs of NFC readers based on your ST95HF the design is based on your reference design  EVAL-ST95HF.We experience on a small batch of boards a problem in the reading distance, I have already tried to measure the field of the antenna ad it seems good, even the tag detection procedure starts correctly, but we are not able to read or write the TAG at the maximum distance.As the field seems good, in my opinion it seems a problem in the RX side, so I have tried to reduce the damping resistor Zrx from the default 330Ohm to 220Ohm and now all seems to work fine.I have found some references in the AN4327 that the values should be defined to reduce the Vrx1-Vrx2 voltage below 7V and it seems that this voltage could sampled at pin ST_R0, with the new Zrx value this voltage reaches 9V, and the datasheet says that the maximum limit is 18V. So I suppose to be on the safe side, but  I don't understand w

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!