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I am using STM32F746G discovery board.~~~void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) {   HAL_UART_Receive_IT (&huart6, Rx_buff, USART_RX_BUFFER_SIZE);   HAL_Delay(500);   HAL_UART_Transmit(&huart6, &Rx_buff, USART_RX_BUFFER_SIZE, 1000);}~~~This is the way i am using USART6, TX and RX.here my doubt is, i fixed my USART_RX_BUFFER_SIZE =10.I send 10 bytes data via serial terminal(hercules), in this case my usart transmit also works with same 10 bytes data. But i send 9 bytes data means, the uart transmit is not transmit the 9 bytes data.my requirement is, how much amount of bytes received via UART_Receive(); , that amount of bytes, send via UART_Transmit();Thanks Manikandan D

When I use the 51 kernels, if I encounter too many defined variables, especially when there are more arrays, I can use xdata,idata to define variables, but I don't know if I can use them with STM32?

How do I implement a image progress without background?

Hello,I've spent quite a bit of time scratching my head and I would appreciate any guidance in this matter.I am using Segger's Embedded Studio with Segger's RTT printf library. Everything works fine with the Segger_RTT_printf() output. I can see the output it in the terminal, no issue. Segger also provides a SEGGER_RTT_Syscalls.c which implements the following so I can overload printf() function:#if (defined __GNUC__) && !(defined __SES_ARM) && !(defined __CROSSWORKS_ARM)   #include <reent.h> // required for _write_r #include "SEGGER_RTT.h"   struct _reent;   int _write(int file, char *ptr, int len); int _write_r(struct _reent *r, int file, const void *ptr, size_t len);   int _write(int file, char *ptr, int len) { (void) file; /* Not used, avoid warning */ SEGGER_RTT_Write(0, ptr, len); return len; }   int _write_r(struct _reent *r, int file, const void *ptr, size_t len) { (void) file; /* Not used, avoid warning */ (void) r; /* Not us

I'm at a loss to figure out this issue with this sensor box, STWINCSV1b. I can get almost all of the applications to build, run and install, I can send the sensor data to the SD files and stream via USB to a terminal and get the BT and WiFi to work. What I can't get to work is the actual cli_example application to connect to the device. I notice there is no device file generated when it's plugged in via the USB, but lsusb and the logs show the proper information: kernel: [259152.269021] usb 9-3: new full-speed USB device number 97 using ohci-pcikernel: [259152.472070] usb 9-3: New USB device found, idVendor=0483, idProduct=5743, bcdDevice= 2.00 kernel: [259152.472075] usb 9-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3 kernel: [259152.472078] usb 9-3: Product: STWIN Multi-Sensor Streaming kernel: [259152.472081] usb 9-3: Manufacturer: STMicroelectronics kernel: [259152.472083] usb 9-3: SerialNumber: 204E31845652Does the cli_example application use raw USB commands to acce

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I'm trying to set up TIM2 timer on my NUCLEO-H743ZI2 board (STM32H743ZI MCU) to start TIM2 timer on a rising edge of a GPIO input pin. I'm using STM32CubeIDE with STM32CubeMx plugin. Is it possible to set up the hardware to start the timer automatically without calling HAL API to start the timer from the GPIO EXTI interrupt callback function? The timer seems to have lots of trigger inputs for this, but I'm not sure how to route GPIO inputs to timers. Thanks!

Please advise what is the difference between HSP061-4M10/U and HSP061-4M10D/C?

I am trying to import an Atollic TrueSTUDIO project to my stm32CubeIDE 1.7.0. But after clicking finish in the import wizard nothing happens and the project doesn't import.

Hello,I'm currently using STSW-ST25R011 firmware.​At first, I was going to read/write with NFC type 2, but the firmware above is only read implemented, so I added Write.​(The Write implementation was implemented using t2t.c in folder firmware/Middlewares/fw_3916).​Tag was tested with NTAG215.​It's normally read/write, but NFC V is a bit different from other NFC types 2!​​It can be configured as 4 bytes or 8 bytes per block.​​The tag I am currently using is EM|ECO 4425 and 8 bytes per block.​​​Therefore, we thought that t2t.c above was not available, so we looked it up and tried to use iso15693_3.c in the same folder.​Read is already implemented, so I'm trying to implement Write, but I'm curious to ask!​​​1. Is it possible to write 8byte blocks in ST?​2. It will be different for each Tag IC, but can I change the size per block to 4 bytes or 8 bytes directly?​3. Do you have any books or links to study at NFC V?thanks !

Hi all,I am trying to write a linux user-space application where in i am taking data from an external MCU processing it and sending it to another thread. My question here is how can make use of DMA in the user-space to make it more efficient? How can i eliminate busy looping / waiting for transfer scenarios in user-space?Thanks,Nipun Pal

Hi, allI am trying to receive packet from uart3 and send them to uart2but the results of my trials are:transmit occurs every main cpu clocktransmit occur just oncewhich I thought was:receive packet from uart3 when packet arrived, independentlytransmit that packet once for every 65msMy problem is "once" and "every 65ms"void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) { HAL_DMA_Abort_IT(&huart2); } void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) { HAL_UART_Receive_DMA(&huart3, (uint8_t*)b, 2); } void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) { HAL_UART_Transmit_DMA(&huart2, (uint8_t*)b, 2); } HAL_UART_Receive_DMA(&huart3, (uint8_t*)b, 2);It's what I tried, "b" is uint8_t arrayThanks.

I'm trying to write a program to the microcontroller through the bootloader via the СAN interface.First I pass message ID 0x7f to activate bootloader. (ID=0x02, data=0x79)Then I transfer the file "E_W_ROUTINEs_128K_ver_2.0.s19" in binary form to address 0x000000A0 to enable write and erase commands. I transfer in blocks of 128 bytes. After transferring each block, I transmit the checksum and receive a positive response from the bootloader (ID=0x02, data=0x79)Then I send a command (ID 0x43) to erase all FLASH memory and EEPROM and specify 0xFF in the first byte. (I get 2 positive answers 0x79)Then I try to transfer the file of the new program to address 0x00008000 in the same way as the file "E_W_ROUTINEs_128K_ver_2.0", but after sending the first block of 128 bytes with a checksum, the bootloader does not respond.I cannot understand why the bootloader does not respond to an attempt to write to address 0x00008000. When a command with the ID 0x31 is sent with the address and the number o

I am attempting to read a NEMA message from a GPS over UART.Im expecting the message to be about 75 chars/bytes long.Heres a sample of the data I'm seeing when using an ardunio for testing the GPS data out over UART.$GNGGA,011112.00,3214.62073,N,05800.07397,W,2,12,1.14,22.0,M,-33.2,M,,0000*45However when I use the code below I get a ton of junk data mixed in with good data. HAL_UART_Receive_DMA(&huart1, &rxByte, 1);void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) { if(rxByte == 0x6e && rx_buff[rxIdx--] == 0x5c || rxIdx >= 73) { rx_buff[rxIdx] = rxByte; sprintf(statusBuf, "%s", rx_buff); CDC_Transmit_FS((uint8_t *) statusBuf, strlen(statusBuf)); memset(statusBuf, 0, 128); rxFlag = 1; rxIdx = 0; } else { rx_buff[rxIdx] = rxByte; rxIdx++; } HAL_UART_Receive_DMA(&huart1, &rxByte, 1); }Example of the junk data being printed outµb\ÿê®Õmˆ.òâÿÿ°dZ$GNGGA,023050.00,3214.87989,N,05800.08063,W,2,12,1.03,25.8,M,-3 0*49 µb\W,2,12,1.03,25.8,M,-33.2,M,,00

I have coded the Nucleo L476.​ How to mount the particular micro controller on my PCB ? What is the exact micro controller name which is there on Nucleo L476?

I set stm32f401 to use USB and deinit USB to dP/dN to use normal GPIO.But I can not control dP/dN for GPIO.How can I switch GPIO function from USB to normal GPIO?

Hi: What does frontPorchEntered do?If i don't have DMA, i don't have to call?Thanks !​

I think I once saw some CAD files for some of STs boards, if there are such things, where are they.

We have all SMT circuit which has BNO055 and STM32F446RET6. Currently our BNO on is not working. All we did was making our GPS module smt in our new version of our circuit and it stopped working. Is it because of our GPS module? Or it can be something else? Please help us.Schematic of GPS and BNO055:(UART and I2C pins doesn't have any other connections other than seen in the images)

Hello kind community, I'm using the STM32 chip and the LTDC module as a dedicated TFT LCD display driver. Right now I am using the NUCLEO-F767ZI for prototyping, but would like to use an STM32L4R/Px chip for the final build. I don't anticipate it being a challenge to transfer my firmware from the F7 to L4 chip but I am not sure if there is a gap in my thinking.Once I get a hold of an L4 chip, I anticipate generating the initialization code for it using STM32CubeMX then copying the code I will write for the F7 over to the L4 firmware. I haven't worked enough with STM32 MCU's but I assume these all use the same LTDC library so any modification in the code will be limited to initialization code and the rest of the LTDC related code will stay the same? I will use the same package for prototype and final build (144 LQFP) so I don't anticipate problems there as long as I stay consistent with the pin assignments/schematic. Is there any other consideration I am missing that might make this a l

I'm considering STM32G431 for a motor control project with 4 stepper motors driven by step and direction.Can all 4 steppers be controlled by using TIM1's four PWM Generation channels 1 thru 4 and be made to move by different amounts of pulses simultaneousy?Or do I need to use a separate TIMx for each motor, e.g., TIM1, TIM8, TIM2, TIM3?

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Hello,I have a button with a pause icon on it in TouchGFX, and I want to know how I can change the pause icon into a play icon after it is pressed. TouchGFX only gives me an option to change the icon while the icon is being pressed.

I`m trying to read an array of about 256 units of uint16 global memory variables which are loaded from *.axf with "variables node" and to display it as Bar Chart with "chart node", the single read procedure is triggering by "button node" with topic "read". "Acq out node" configured as for st-link communication. After deploying i see "p2p connected" and click the button, the data appears in chart correctly... once. And then st-link is getting totally unable to communicate with message "not connected! SWD protocol not supported(f1)". Any other software goes unable to connect with ST-link (without USB replugging) with messages like "STlink USB communication error". Devboard MB1035B works nice and programs and debug without any errors. Other words this issue appears only in CubeMonitor. But the almost same flows.json dashboard works very good and read and write any values for ST-Link+STM32F103 thirdparty board. Is any solution at this case?

Hello,We have a custom board with STM32MP157F silicon rev Z with emmc 24AA64T-I/OT . We are able to flash out OS with cubePorgrammer but we are not able to boot on emmc after flashing. According to :https://wiki.st.com/stm32mpu/wiki/STM32MP15_ROM_code_overview#Boot_from_SD_card https://wiki.stmicroelectronics.cn/stm32mpu/wiki/How_to_update_OTP_with_U-BootandRM0436 part 4 we programmed OTP registers with the following parameters :CFG3 = 0x00000007 ( emmc_if_id=2 qspi_not_default_af=1 (config by mistake) )CFG5=0x10953191CFG6=0x2f952e95CFG7=0x24952395where :-0x3191 == sdmmc2_ck PC1 AF9 no pull medium speed-0x1095==sdmmc2_cmd PA0 AF9 pull up high speed-0x2e95==sdmmc2_D0 PB14 AF9 pull up high speed-0x2f95==sdmmc2_D1 PB15 AF9 pull up high speed-0x2395==sdmmc2_D2 PB3 AF9 pull up high speed-0x2495==sdmmc2_D3 PB4 AF9 pull up high speedWhen we set the boot pins according to emmc boot no thing append. We have no log on serial port and the MP1 entrer in usb/uart dfu mode.