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HiI have used STM32F030RC.I program the flash memory, using bootloader from PA9 and PA10.I have programmed the microcontrollers first time successfully. But after some program times, I can not program them. I traced the problem. The micro goes to boot mode with BOOT0 pin ( The main program does not run). but when I send 0x7F, I don't receive the response. I find that the micro does not receive the 0x7F ( when it receive, it will High the TX pin). And I fine the micro receive the 0x7F with oscop.please help

I made an integer Square root function:    int integerSQRT, result,result2;   for (integerSQRT = 0; integerSQRT < 100; integerSQRT++)        if (integerSQRT*integerSQRT >= squaredResult) {                      result = integerSQRT - 1;      // just larger than the sqroot -1 is just less than           integerSQRT = 100;       }   // easily adapted to cube root, quad root etc...

Posted on March 31, 2016 at 16:14I have observed in all of the USB-CDC examples I've seen with the STM32Cube libraries, that the transmit buffer is managed with a timer that polls the USB to see if the previous transmission was complete (or rather if the USB is busy) before setting the next chunk of transmit buffer and calling USBD_CDC_TransmitPacket - Is there a way around having to poll this?  Is there an interrupt available that indicates with a transmit is complete so I know as soon as possible when I can send the next packet?  Or do I have to poll?  If I have to poll, what is a good polling interval to get the best possible performance (FS USB, not HS) #usb #cdc #device #usb-cdc-stm32cube-stm32-polling

Dear Sir/Madam:I have a problem and would need your help. when I write a watchdog like the following:void init(){.. SystemClock_Config(); /*######## Configure watchdog timer ############################*/ // Watchdog clock is LSI, runs at 32kHz. The below settings give // a max watchdog period of 4 sec before reset. WDHandle.Instance = IWDG; WDHandle.Init.Prescaler = IWDG_PRESCALER_256; WDHandle.Init.Reload = 511;  HAL_IWDG_Init(&WDHandle); HAL_IWDG_Start(&WDHandle);}in the main loop functionint main(){...while(1){HAL_IWDG_Refresh(&WDHandle);func1();func2();....}// while}sometimes, whatdog reset happen, I do not know which func cause the watchdog problem.my question is:whether am I correct for the usage of watchdog?how could I find which one cause watchdog reset?is there any watchdog interrupt, once the watchdog reset, this interrupt routine give/print some cause before the system reset?thanks for your helproseanne

I've posted a request to the support board https://my.st.com/ols more than a month ago. No one answered. What's going there? Does anyone read these requests?Thanks,Pavel A.

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Morning everyone,I'm trying to reconfigure a timer configuration that generates dma requests.The DMA request, moves data from the GPIO pins to memory, so peripheral to memory. Currently I have two timers cascaded, the one(being timer 8 is fed with an external clock) and produces a waveform when it is triggered. It outputs this waveform, which is then fed to timer 1 which is in input capture and generates the DMA requests.This seems wasteful as the time it takes to toggle the pin and generate the DMA request from cascaded timers slows down the process.To improve this, I'd like to only use timer 8 in output capture(no output mode) to trigger the dma whenever the counter overflows.Here is the current timer 8 configuration: static void MX_TIM8_Init(void) {     TIM_ClockConfigTypeDef sClockSourceConfig;   TIM_SlaveConfigTypeDef sSlaveConfig;   TIM_MasterConfigTypeDef sMasterConfig;   TIM_OC_InitTypeDef sConfigOC;   TIM_BreakDeadTimeConfigTypeDef sBreakDead

Posted on June 22, 2018 at 01:40I'm wary about assuming anything that doesn't have a firm specification and the V_EH pin seems to have very little information about it.1) The datasheet says 'When the Energy harvesting mode is disabled or the RF field strength is not sufficient, the energy harvesting analog voltage output V_EH is in High-Z state.' What is the specification associated with this High-Z state? Specifically what is the reverse leakage?2) I cannot see any specification associated with V_EH output voltage vs current characterisitcs. Do they exist? I apreciate it will be a function of the RF field. What is the unloaded voltage on the pin?Is this the best IC for the job?Any assistance would be greatly appreciated.

Posted on July 06, 2018 at 13:47I use Rowley (personal favorite), IAR and Atollic depending on the customer's requirements.  I have a project which I am trying to work on now in Atollic.  I have in Atollic the STM32CubeMX perspective version 4.25.  Outside for the other environments, I have upgraded to 4.26, and have worked on a project there which I now need to put into Atollic.  I am forced right now to work on it in the stand-alone STM32CubeMX, because the upgrader in Atollic is telling me that I have the latest version. but when trying to load the project complains that it was made with a newer version and to please upgrade first.#stm32cubemx. #atollic-truestudio-windows

Hello!​I try to print message from my Nucleo-L152RE board by USART2 to PuTTY, but see only black screen without symbols. On other side, my Windows 10 see Virtual COM and I can to burn the code to Nucleo board from EWARM​. What I must to do to solve this problem ?​M​y regards,Maksim​

Posted on June 22, 2018 at 21:13Hey Guys,I have a problem using the CAN1 and CAN2 in dual use on the STM32F2427ZIT6 (custom board).Hereby CAN1 is configured for FIFO0 Interrupt and,CAN2 is configured for FIFO1 interrupt.I managed to transmit and receive frames via CAN1. Also I manged to transmit frames with CAN2.Furthermore if I send frames with the correct filter ID to CAN2 it does arrive in the FIFO1 memory.(I can see it in the hcan2 handler instance with the RF1R bit switch to 1. Also I do see the frame data in the sFIFOMailbox[1] in the RDLR and RDHR fields.)The problem is that the HAL_CAN_RxFifo1MsgPendingCallback is not called. Whereas when I use CAN1 the HAL_CAN_RxFifo0MsgPendingCallback works fine. So because I do receive the frame in the FIFO I think the filter settings are correct. Also the new firmware automatically is assigning the CAN1 handler for the filter settings in the ConfigFilter function.Firmware version 1.21. is used.my can_init function:void Com::init_can(interf

Hello everyone. I'm studying Stm32 and just starting with kit Stm32f746g disco. I'd like to download Standard peripheral libraries. But I don't see any information about Std libraries for F7xx in google. So I'd like to ask you: have or have not Std libraries for F7xx? But not, what libaries can i use intead of HAL. I don't want to use HAL libaries which creative from STM32Cube. Thank you so much. 

Hi,I have a tracking project based on GPS.Could you please suggest me a GPS module that has a library for any STM32L1 MCU?Best regards.

Posted on July 11, 2018 at 22:34Trying to replicate the functionality of the project example for FatFs_uSD_DMA_RTOS on the STM32H743I_Eval board using CubeMX I have run into the next layer of problems, this one involves the SDMMC clock.  There is none!In the project example from the repository STM32Cube_FW_H7_V1.2.0, I noticed the initialization for the SDMMC clock is missing and yet the example works.  The PLL and bus clock dividers are setup but nothing is done for the peripheral clocks like what happens inside the CubeMX generated code.So the question becomes what is the default state if no initialization is done for the peripheral clocks?  In particular, what happens to the SDMMC clock mux if PeriphClkInitStruct.PeriphClockSelection = ...|RCC_PERIPHCLK_SDMMC|... does not occur and no source is set like:PeriphClkInitStruct.SdmmcClockSelection = RCC_SDMMCCLKSOURCE_PLL2;which I copied from the CubeMX code?I read somewhere else on the forum regarding PPL2 cannot be driv

Posted on June 14, 2018 at 12:50Hello ST25 community.Some weeks ago I wrote this thread:https://community.st.com/0D50X00009XkWIeSANI got the coding as in the example and it works. (The bytes are coded as it is mentioned in ISO 15693 datasheet)I want to use 1 out of 4 coding for transmit from VCD to VICC:Following register settings are used:Defined: MSB to LSB ( 7 to 0 )*-----------------------------------------------------------------------------------------------------------**register settings for iso15693*Mode Definition Register                         (0x03)     : 0 1 1 1 0 0 0 0 - sub carrier stream modeBit Rate Definition Register                     (0x04)     : 0 0 1 0 0 0 1 0 - bit rate fc/32Stream Mo

Posted on July 10, 2018 at 17:29Hello,This is continuation of below Topic.I have/external-link.jspa?url=http%3A%2F%2Fwww.st.com%2Fen%2Fevaluation-tools%2Fnucleo-f722ze.htmlAnd Trying to access Two microSDCards Simultaneously . One by One (Either SDMMC1 or SDMMC2 is working fine) https://community.st.com/0D50X00009XkWKfSAN Below is my STM32Cube Configuration SettingRest all default ./* USER CODE BEGIN 0 */FATFS myFATFS;FIL myFILE, myFILE2 ;UINT testByte ;char myRDdata[15] ;/* USER CODE END 0 */MX_GPIO_Init(); MX_SDMMC1_SD_Init(); MX_SDMMC2_SD_Init(); MX_FATFS_Init();void MX_FATFS_Init(void) { /*♯♯ FatFS: Link the SD driver ♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯*/ retSD = FATFS_LinkDriver(&SD_Driver, SD_Path);/* USER CODE BEGIN Init */ /* additional user code for init */ /* USER CODE END Init */}/* USER CODE BEGIN 2 */ if(f_mount(&myFATFS,SD_Path,0) == FR_OK) { char mypath[] = {''0:OneDrive.txt\0''} ; f_open(&myFILE,mypath , FA_WRITE | FA_CREATE_ALWAYS) ; char mydata[] = {''

Posted on July 16, 2018 at 22:13Does anyone know where I can find a table or listing of the alternate functions for the stm32H7xx.  I have found the register description in the reference manual, Page 498/3178, section 11.4.9, but cannot find where the alternate functions are described per port and how they map to AF0...15.null

Posted on March 01, 2018 at 17:41x-nucleo-lpm01A with firmware 1.0.1 is not being recognized by dfuse demo v3.0.5 as an available device. Dev platform is W10, default OS vcp driver. Have also tried with stsw-stm32102 vcp driver installed, external power, and usb powered. W10 sees STM Bootloader on usb enumeration, but DfuSe not listing as available for reprogramming.UM2269 did not provide suitable troubleshooting guidance. Yes, CN2 switched to side �Syst�Any recommended next steps to troubleshoot?Is there a procedure to use stlink to reprogram v1.0.2 firmware directly?#stm32cubemonpwr #dfuse-demo

Posted on July 14, 2018 at 14:14I would like to connect STM32F030C6T6 in two different applications : with USB 2.0 or with Ethernet port Please give me suitable application note  

Posted on July 11, 2018 at 07:52Hi, I am very new to MCU programming. I am starting a project with STM32H753. I need to interface eMMC card to this MCU. How do I start programming using available HAL drivers? Also how do I program for USB interface? Which software is best to program with this MCU?Please reply ASAP#stm32h7

Posted on July 11, 2018 at 03:45I have achieved scanning or advertising as well as a connection as a slave to 1 master and simultaneously a master of 2 slaves.Now I need simultaneous scan & advertise (whether or not in connection as a slave or master), but cannot achieve it.Would someone please point me to an example which achieves this or show some code snippets that worked for them?I am following guidelines of en.DM00141271 BlueNRG Prog Man Rev 6 Dec 2016, Chapter 4: BlueNRG multiple connections timing strategySpecifically wrt advice 4:Every time you start Advertising:b) If not Direct Advertising, choose Advertising_Interval_Min = Advertising_Interval_Max such that (Advertising_Interval_Min + 5ms) is an integer multiple of the shortest allocated connection intervalThe error I am getting is 0x85: BLE_STATUS_INTERVAL_TOO_LARGEOrder of work:0. initialize Mode4:uint8_t DataMode = 4;aci_hal_write_config_data(CONFIG_DATA_MODE_OFFSET, CONFIG_DATA_MODE_LEN, &DataMode));and of course

Posted on May 23, 2018 at 03:12 I made a project for CubeMX 4.25 + STemWin with 746Discovery (default config setting from CubeMX). Everythingis well. (Keil 5.25 compiler) I add FREERTOS to project (1 task with default setting) After compiling I have error linking... 746\7axf: Error: L6218E: Undefined symbol OS_TimeMS (referred from stemwin_wrapper.o). Searching for 'OS_TimeMS'... H:\!STM32\!_F0_F1_F2_F3_F4_F7\F7\746_NG\STemWin_Cube_4_25\746_new_win_2layer_free\STemWin\Target\STemwin_wrapper.c(85) : extern volatile GUI_TIMER_TIME OS_TimeMS; H:\!STM32\!_F0_F1_F2_F3_F4_F7\F7\746_NG\STemWin_Cube_4_25\746_new_win_2layer_free\STemWin\Target\STemwin_wrapper.c(876) : OS_TimeMS++; Lines matched: 2 Files matched: 1 Total files searched: 148 A similar situation for F4.. #freertos #cubemx #stemwin Note: this post was migrated and contained many threaded conversations, some content may be missing.

Posted on June 14, 2018 at 12:42Im adding to touch to STM32f746 Disco. Using STCubeMx and STemwin + Guibuilder.  When trying to add touch I add the following two include files to main.h&sharpinclude 'stm32746g_discovery.h'&sharpinclude 'stm32746g_discovery_ts.h'when I compile I two errors pop up :         undefined reference to 'BSP_TS_GetState'         undefined reference to BSP_TS_Init'These are referenced in the stm32f746_discovery_ts.h  can someone tell me what these errors mean.they are used in functions below from main.c (highlighted in bold)void TouchTimer_Init(){ BSP_TS_Init(480,272); // initialize touch screen if (HAL_TIM_Base_Init(&htim3) != HAL_OK ) {while (1);} // start timers if (HAL_TIM_Base_Start_IT(&htim3) != HAL_OK ) {while (1);}}andvoid BSP_Pointer_Update(void){ GUI_PID_STATE TS_State; // structure that reports touch state static TS_StateTypeDef prev_st

Posted on July 13, 2018 at 05:15where can I find the tm32cube-fw-l4-v1120.zip ? Because the internet speed is too slow to update the stm32cubeMX automatically.

Posted on July 11, 2018 at 11:53My setup: STm32L053 nucleo and custum board with STm32L0. I am running a scan from nucleo borad for all possible I2C slave devices address in order to obtain the address of slave device ds1337.Both boards are connected on the same line. However, I can not receive the address unless custom boards is being disconnected from SDA and SCL lines.Using voltmeter I have noticed that:While both boards are connected SCL and SDA are in logic high.Custom board is not made by me, moreover I do not have access to it's code. The board is for production and I have to test it's DS1337 clock.Is it possible to read/write slave in this situation? How?Best regards,Ovidijus