STM32 MCUs Embedded software

Hello, In my bootloader time base source is Timer 6 and application its SysTick. When I make same time base for both ( i.e. timer 6), my application works fine.Before jumping to main application I am de-installing timer 6 using below function but still my application is crashing. Any suggestion if I am missing anything here. void HAL_DenitTick (void){   /* Disable the TIM6 global Interrupt */ HAL_NVIC_DisableIRQ(TIM6_DAC_IRQn);   /* Disable TIM6 clock */ __HAL_RCC_TIM6_CLK_DISABLE(); /* Stop the TIM time Base generation in interrupt mode */ HAL_TIM_Base_Stop(&htim6); HAL_TIM_Base_DeInit(&htim6);   }

Hi, I am writing my bootloader, I changed MSP and reset handler value correctly so code is able to got application mode. In my application I changed VTOR value as below but still my application is getting stuck post sending data to UART.

I have a working example of the SDMMC FATFS demo firmware using HAL version 1.3.2. I want to convert the firmware to use HAL version 1.7.0. However, when I perform the conversion to 1.7.0 the SDMMC no longer works. Any access to the SD card results in a failure. Does anyone have any idea what the problem may be?

Hello,Please help me with your opinions on my concern which is related with ease of reading and understanding. Please review my last comment that I uploaded to:https://github.com/STMicroelectronics/STM32CubeH7/issues/62Regards,Rajeev

Hello I am using these lines in order to put my STM32F10x to sleep mode:void enter_LPSleep (void) { //Suspend SYS Tick HAL_SuspendTick(); //Enable Power Control Clock __HAL_RCC_PWR_CLK_ENABLE(); //Put regulator to low power mode HAL_PWR_EnterSLEEPMode(PWR_LOWPOWERREGULATOR_ON,PWR_SLEEPENTRY_WFI); HAL_ResumeTick(); HAL_GPIO_WritePin(LED_BLUE_GPIO_Port, LED_RED_Pin,GPIO_PIN_RESET); }But how can I know if it entered to sleep mode correctly? I am not planning to wake it up after sleep mode. So it will be sleeping till the power is off.Edit: Also I am usin FreeRTOS, would FreeRTOS task switching wake up the device?

Hi, I am trying to use the latest CubeIDE V1.3 with cubeMX v5.6 with FatFS R0.12c and with FreeRTOS cmsis_osv2 (tried it with cmsis_osv1 too but to same). I am using FreeRTOS in my project. The SD card is connected using SDIO 1-bits (SD 1 bit because MMC 1 bit doesnt work with fatfs) wide bus. The MCU is STM32L151RDT6. HAL driver is V1.9.The problem is that f_mount function is never working. I tried without Freertos, it is work fine but FREERTOS+SDIO+FATFS f_mount doesnt work.If I using cmsis_v2 I have compiling error after generating code from MX. undefined reference to `osSemaphoreCreate' syscall.c Middlewares/Third_Party/FatFs/src/option line 45 C/C++ Problemundefined reference to `osSemaphoreWait' syscall.c Middlewares/Third_Party/FatFs/src/option line 84 because in cmsis_osv2 osSemaphoreCreate is renamed to osSemaphoreNew and osSemaphoreWait to osSemaphoreAcquire. I fixed it with :

Hi,my STM32L496 Controller ist booting only into the internal bootloader. BOOT0 Pin is low, a valid program is on 0x08000000 and if I set the PC and SR with the values I found on 0x0800.0000 and 0x080.00004 the controller does it's job. What could be wrong?Where can I find a description what does the controller do while booting?creetings and stay healthyJosef

Hi, I am developing CAN Bootloader .This BOOtloader receives Application binary file information through CAN and update the Application .But i have a confusion that the binary file doesn't contain any Address data like Hex file format and SREC File format.From my system end i need to Parse this binary File and send it through the CAN .can anyone please tell me how to parse the binary file

Hi STteam,my name is Himavanth, working as an Embedded Engineer at Supralax Electronics Pvt.Ltd. please have a look at the problem.@brief : We are working PD source solution(i.e. 60Watt (20V @ 3A max)) using STM32G081RBT6. We are taking USB-PD_Provider_1port as an Base reference project.@Reference : I have gone through each and every line of

Hello all,I recently bought the B-L475E-IOT running the following example. en.stm32cubel4\STM32Cube_FW_L4_V1.13.0\Projects\B-L475E-IOT01A\Applications\WiFi\WiFi_HTTP_Server, which concerns an http server. By testing it, I notice that the third time I want to turn the led on through the browser, then the page does not load.I notice that in function "ES_WIFI_Status_t ES_WIFI_StartServerSingleConn(ES_WIFIObject_t *Obj, ES_WIFI_Conn_t *conn)", when the browser page does not load, the wifi module does not send the word "Accepted".do      {       sprintf((char*)Obj->CmdData,"MR\r");       ret = AT_ExecuteCommand(Obj, Obj->CmdData, Obj->CmdData);        if(ret == ES_WIFI_STATUS_OK)       {         &nbsp

Hello,I have a Nucleo H743ZI2 on which I am communicating with the micro AB USB port through USB OTG. Up until now I always had the main USB (STlink) plugged in to power the board. Eventually I want to power the nucleo board with an external 3.3 power source (another board in the system).However whenever I do that (i.e. power the H7 with the external 3.3V source), the USB OTG won't enumerate and get detected by the PC.The datasheet is not helping, actually, my understanding is that ST actually recommends the use of the an external power supply when using USB OTG. Quote:1.It is recommended to power the Nucleo-144 board with an external power supply when using USB OTG or host function.I am using the USB OTG as device only, SOF and VBus all disabled.Does anyone know what I am missing here?cheers

Hi,I'm a french embedded developer.At my office, i use a STM32F767GTx custom board with a N25Q128A QSPI Flash memory, and my software works fine.Recently, i add a WebServer using LWIP and HTTPD.I have some CSV files on my flash memory, generated by the software.Using the webserver, i cand download these files on my computer.In httpd_structs.h, i add content types for the CSV files.But, when i download the files, how can i have the same file name as in my flash memory ?I try to use :Content-Disposition: attachment; filename="nameofthefile"But it doesn't works, because httpd.c and httpd_structs.h are automatcially generated by CubeIDE, and i lost my code everytime i make some modification !How can i change that ?Can i have some helps ?Thanks a lot.

I'm trying bootloader of nucleo STM32G474RE and faced several issues : It seems only 8bytes alignment is working for flash writing while AN2606 table.7 says it requires 4bytes alignment.In an2606 table.141, valid RAM area is from 0x20000000 to 0x20004000. I failed to write in this area while I succeeded to write from 0x20004000 to upper area.General question not limited to STM32G474RE. In an2606 table 141, there is a valid RAM area depending on PID. Is this not dependent to actual SRAM size ?With 1 and 2, I think this is a typo of the manual.Please kindly advise. Thanks in advance.

Hi, I have an example that correctly responds to ping 192.168.0.100 on the NUCLO-H743ZI demo board and where the core works at 64Mhz.If I bring the core to 400Mhz, (only this change), the program no longer works. Why ?Thank youAlberto.PS.I attach complete project and replaced file.

Hello, I'm testing RTOS Message queue on STM32F7, When I try to create an message queue to send an message from Thread 1 to another thread, my data I receive in target Thread is unstable.For example, I'm trying to send uint16_t 317, but in target Thread sometime is 0, and sometime exactly 317. Anyone can tell me what happened? Below is my function// Define handle QueueHandle_t MsgHandle; // Define new queue osMessageQDef(myQueue02, 16, uint16_t); MsgHandle = osMessageCreate(osMessageQ(myQueue02), NULL); // Put a message uint8_t *data = "abcxyz"; uint16_t FlashDataSize; FlashDataSize = (int)strlen(data); osMessagePut(MsgHandle, FlashDataSize, 0); // Get a message osEvent size_event; size_event = osMessageGet(MsgHandle, 0); // => size_event.value.v = ?? unstable (= 0 or = 317 (correct))Many thanks,Hieu

Dear everyone,Here is my problem about the usbhost+MSC+Fatfs function with stm32cubemx in MCU stm32F407 and stm32L475, with a very strange issue:There is a bug about the f_write or f_f_sync, the operation and result is as followed:First test:1.      f_open // make a new file;2.      f_write// write something, return is FR_OK, and “the number of bytes written�? is right3.      f_close// close the file, return is FR_OK, and the f_sync is called and return ok.4.      //remove the disk and plugin PCresult: file created,but nothing written.Second test:1.      f_open // make a new file;2.      f_write// write something, return is FR_OK, and “the number of bytes written�? is right3.      f_write// wri

I tested the example in STM32Cube_FW_H7_V1.7.0/Projects/NUCLEO-H745ZI-Q/Templates_LL. It works perfectly on my Nucleo board.However, when I want to test my STM32H755 with the same code. The CM7 main blocked at while((LL_RCC_D2CK_IsReady() != 0) && ((timeout--) > 0));It seems the core M4 did not enter to the sleep mode, which causes the RCC->D2CK is always set. Then the code will finish with a timeout and loop in Error_Handler();I can well enter the debug mode for CM4 and the code to enter sleeping mode should be executed as on my Nucleo board.Could anyone help me on this problem of migration?Cedric

Our team has noticed that with a stock STM32F722RE, and 0.4V applied to the VDD pins (which is occuring in our case due to a 3.3v CAN transceiver), when 3.3V is finally applied to the chip (ie voltage goes from 0.4->3.3V), bootloader entry via USB connection will fail (on ubuntu using the dmesg command we get persistent 'device descriptor read/64, error -32'). This condition persists even if we hardware reset the chip by toggling the reset pin.If the 0.4V is removed (by disabling the transceiver or momentarily shorting the pins together) and then 3.3V reapplied (0.4->0.0->3.3V) ie a complete power cycle, the stm32 bootloader starts up fine.Has anyone had a similar problem? On reading the datasheet we cant find any indication that the USB functionality of the chip will fail if VDD is less than the brown-out threshold (~2.5V in our case).

For PTP implementation in STM32F427 we have decided to use PTPd stack but I am not able to understand what is the use of Ethernet PTP target time high and low registers in achieving time synchronization.

We' re planning to implement ST-Link (USB to SWDIO) HW design using STM32F103CBT6 microcontroller. This HW design is similar to any STM32 Nucleo board's ST-link HW design.  What I understood is STM32 controller will be having default UART bootloader only.Questions:1) Where can I get USB bootloader for STM32F103CBT6 ?2) how to flash USB bootloader in STM32F103CBT6 ? Using UART interface or SWDIO or USB interface?

I am using the STM32L496VGT (100 pin) MCU and using USB_OTG_FS_DP and USB_OTG_FS_DM for data transmission. If I set the GPIO pull up for these pins (PA11 and PA12), will that act as the required pull up for the USB?

Hello guys,We have an RNDIS code that we use with STM32F070. We are trying to adapt this code to STM32F107. However, we could not find the equivalent of the code snippet below in STM32F107. Could you help? (We are using Cubemx.) #define RNDIS_CONTROL_OUT_EP                           0x00  #define RNDIS_CONTROL_IN_EP                            0x80  #define RNDIS_NOTIFICATION_IN_EP                       0x81  #define RNDIS_DATA_IN_EP             

Hi,I would like to use a STM32F4 as a USB storage and followed the STM's video on the subject : https://www.youtube.com/watch?v=GjQqZd1keBo&.My code run fine but my PC (Win10) fail to recognize device as an USB.I used a Nucleo STM32F411RE and connected D+ and D- directly to USB plug, ground to ground and I’m not sure what to do with Vbus since video doesn't speak about Vbus sensing. Nucleo is powered through ST-Link.What am I missing there?

I have one STM32L4R9ZIJ6, and I loaded BootLoader on 0x08000000 and BLE Sensor bin on 0x8005000. However, when the board doesn't seems boot into the program. Red LED flashing when plugged USB power. Using Flash Loader, it ask for verify boot mode configuration. What should I do to make it work? Thanks for any kind of help.

Hello. I'm using an STM32F3, and am struggling to get the bootloader working on my custom board. It works on the F3 discovery board (If you remove SB19 and wire up a pull-high).Steps: Plug USB port into PC. Boot1 is confirmed to be set high in MCU software. Pull Boot0 to +3V3 using a 10K PU. Cycle power or reset. What should happen: MCU doesn't boot normal program. PC (eg Windows) Device manager should show `STM32Bootloader`, and DFU-util can be used to flash. This is what happens on the discovery.On my board, it boots up as normal, and Windows can't see the bootloader.Additional data: I can confirm there's a working HSE, and the data lines work. And something weird: When I use a scope, Boot0 is reading low with the 10KPU... It only goes high if I wire it directly to a 3V3 line. (This is only on my board; dev board shows normal). This is very odd, and implies the MCU is pulling Boot0 low... which I don't think it should do.Than