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Hello,As described in the reference manual of STM32F746, it was found that bidirectional communication using one data line (SDA signal) in the figure can be realized by performing half-duplex communication using the SPI function.​Please tell me the specific control method.Is it possible to switch to reception by setting the BDIOE bit of SPIx_CR1 registers to 0: Output disabled (receive-only mode)?​For exsample1, if the sequence is as follows, does the clock signal automatically become High after the processing of 1 is completed?After that, in the process of 2, does STM32 immediately start transmitting the clock and receive the data?​sequence1. 9-bit transmission completed2. Set BDIOE bit to 03. Receive 8-bit​For exsample2, can STM32 receive data in the following sequence?In that case, is it possible to prevent STM32 from receiving the data for one bit of the dummy clock cycle?Or is it better to send 10 bits in process 1?​sequence1. 9-bit transmission completed2. Set BDIOE bit to 03. Re

Hardware:BORAD：X-NUMCLEO_NFC06A1MCU：​STM32F103ZET6​At present, I can read MIFARE​ card's UID by transplanting the official software on my own MCU ,but i can not countinue to read its data ,so help me, please.

I want to use i2c-2 and i2c-6 from the user space to access different external devices. With 'i2cdetect -l' I can see the interfaces, But executing 'i2cdetect 3' sais 'Bus busy'.Used HW: Phytec Sabre Board (phyBOARD-Sargas)Linux: Yocto-OpenSTLinux PD20.2.0Executed command that results in error:root@phycore-stm32mp1-3:~# i2cdetect -l i2c-3 i2c STM32F7 I2C(0x5c009000) I2C adapter i2c-1 i2c STM32F7 I2C(0x40013000) I2C adapter i2c-2 i2c STM32F7 I2C(0x5c002000) I2C adapter i2c-0 i2c STM32F7 I2C(0x40012000) I2C adapter   root@phycore-stm32mp1-3:~# i2cdetect 3 WARNING! This program can confuse your I2C bus, cause data loss and worse! I will probe file /dev/i2c-3. I will probe address range 0x03-0x77. Continue? [Y/n] 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- [ 217.031102] stm32f7-i2c 5c009000.i2c: bus busy [ 217.034098] stm32f7-i2c 5c009000.i2c: Trying to recover busFor /dev/i2c-0 and /dev/i2c-2 the command i2cdetect works as expected. But not for the newly added /dev/i2c-1 and /dev/i2c-3.R

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IAR version is 9.10.1, the lib version is 1.5.0 for F0 device. The IAR expose a lot of faults about "core_cm0.h". I do not change anything, just open the project file under "EWARM", then compile.

Here is my source code: void CLOCK(void){ RCC_DeInit(); RCC_LSICmd(ENABLE); RCC_HSEConfig(RCC_HSE_ON); while(RCC_WaitForHSEStartUp()==ERROR); FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable); FLASH_SetLatency(FLASH_Latency_2); RCC_PLL2Cmd(DISABLE);   RCC_PLLCmd(DISABLE); RCC_PREDIV1Config(RCC_PREDIV1_Source_HSE,RCC_PREDIV1_Div1); RCC_PLLConfig(RCC_PLLSource_PREDIV1,RCC_PLLMul_8); RCC_PLLCmd(ENABLE); while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY)!=SET); RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);   RCC_HCLKConfig(RCC_SYSCLK_Div1); RCC_PCLK1Config(RCC_HCLK_Div2); RCC_PCLK2Config(RCC_HCLK_Div1); while (RCC_GetSYSCLKSource() != 0x08){}   }   int main(){ unsigned long int counter; CLOCK(); GPIOS();   IWDG_WriteAccessCmd(IWDG_WriteAccess_Enable); IWDG_SetPrescaler(IWDG_Prescaler_32); IWDG_SetReload(500); IWDG_Enable();   while(1) { counter=counter+1; Print(counter); if(counter>6553500){counter=0;} IWDG_Rel

Hello,I am building and electric field sensor. The driver signal for it is produced via DAC of the STM32F767zi microcontroller. The signal is 4 kHz and is generated at a sampling speed of 80 kHz via DMA and TIM6. As you can see from the picture the signal has errors in it like every 10-20 wavelengths there is 1 corrupted sample.Best regards

Hello!I have STM32H743BI configure TIM4 to PWM GEnerationstatic void MX_TIM4_Init(void) {   /* USER CODE BEGIN TIM4_Init 0 */   /* USER CODE END TIM4_Init 0 */   TIM_MasterConfigTypeDef sMasterConfig = {0}; TIM_OC_InitTypeDef sConfigOC = {0};   /* USER CODE BEGIN TIM4_Init 1 */   /* USER CODE END TIM4_Init 1 */ htim4.Instance = TIM4; htim4.Init.Prescaler = 0; htim4.Init.CounterMode = TIM_COUNTERMODE_UP; htim4.Init.Period = 65535; htim4.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1; htim4.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE; if (HAL_TIM_PWM_Init(&htim4) != HAL_OK) { Error_Handler(); } sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET; sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE; if (HAL_TIMEx_MasterConfigSynchronization(&htim4, &sMasterConfig) != HAL_OK) { Error_Handler(); } sConfigOC.OCMode = TIM_OCMODE_PWM1; sConfigOC.Pulse = 0xFFFF; sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH; sConfigOC.O

I've searched in all the obvious places but can't find any directive to tell the compiler to place some large arrays I have in the SRAM1, SRAM2 and SRAM3 memory segments. As these are not contiguous with the AXI memory I would assume I need to place arrays there manually.Any hints most welcome.

I want to set a RTC alarm to trigger 1 hour from now but there doesn't seem to be a built-in function (using HAL) to add time. Of course 1 hour in the future is easy unless it happens to be almost midnight or worse almost midnight at the end of the month.Hopefully I have overlooked a simple way to do this(this is on a STM32L0)

I want demo code for STM32F746 Discovery kit as per follow.1) using lwip for TCP Server / Client.2) Not using RTOS.Demo code available for STM32F756-EVAL at Projects\STM32756G_EVAL\Applications\LwIP\LwIP_TCP_Echo_Client.This demo code is perfect but i don't have this board, I have STM32F746 Discovery board.Both have different PHY IC. And one with MII and another is on RMII.So is there any example / demo code for STM32F746G-DISCOVERY for TCP server/client without RTOS..?

Hello. I have been messing around with the STMF407VG for a few weeks now using a discovery board. Been the steep learning curve but I think I have made significant progress on learning firmware development on it. I have gotten my code to be to a point where I wanted to have a custom PCB solution. I went ahead and looked at a few implementations of other STM32 dev boards and used that to help understand how to connect everything up.I finally got my boards in the mail. Power seems to be okay to the target, I measured the power rails for all of the pins and looks okay. Both boot pins are grounded, and the reset line is held high. Though when I try to upload a blank project to my custom PCB, I get the error that there is "No device found on target". Only thing I can think of is that I must have miswired the port that connects to the ST LINK V2 I purchased. I never made a custom PCB with an ARM MCU before so this is my first go at it. I have attached a picture of the MCU section of the sche

Hi,i am new with node-red functionality and i want to decrease the digits in a Gauge.When i start the Dashboard i get the temperature in e.g. 21.77615442345 degrees. And i want to show it with 2 digits e.g. 21.78 degrees.Ho can i do this?

Hi everyone, I'm writing a program for a STM8L152R8 that sends data over UART to another mcu that should respond to me though I have a timeout on the transaction of five seconds using timer 4. I'd also like to include a watchdog however the max timeout we can get with IDWG is 1.7s. What would be the best approach here to ensure the watchdog doesnt reset the system while waiting for a UART response?It's a similar question to https://community.st.com/s/question/0D50X00009Xka0TSAR/watchdog-timer-problem however I feel the last question in this thread is very important and unanswered though.Thanks for the help.

Hi,I would like to ask whether it is possible to put multiple models into an MCU using x-cube ai. The first model would generate one output which will be one of the inputs for another model with 13 inputs and 3 outputs.If you could provide steps as to how to achieve this, it would also be very helpful.Kind regards,Jona

Hello, I'm using the STM32L476RG and trying to receive data via UART.When I use the following code:int main(void){ ... HAL_UART_Receive_IT(&huart4, data_RX,20); ....}void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart){ printf("\nMessage received is: %s",data_RX);}This works just fine if ONLY the message received is 20 characters long. But not if the message is for example 15. I know that when my data_Rx is full, it then will be printed.I was wondering if anyone came across this problem and was successful implementing a solution. I tried some of the codes I found on the internet, but lot of them where really confusing.Sorry if this topic was already discuss. Any help would be awesome!Thank you.

I tried to modify firmware of ST-Link of NUCLEO-L053R8 using a tutorial.However, when I select CMSIS-dap in Keil (as mentioned in tutorial) it says "not a genuine ST device abort connection". Everything worked well before modification.Now I want to revert to original firmware but STM32 ST-LINK Utility doesn't detect board.When I connect board to PC, LD1 is green and LD3 turns on for a moment and then turns off. After trying to use CMSIS-dap and getting error, LD1 turns red.How should I revert to original firmware or bypass "not a genuine ST device" error?

My second question continues to be the how can this PCM value be converted to .wav format?i still need a deeper understanding into this domain , anybody over here can post suggestions ,links technical articles and can share their experiences for my learning would be really be appreciated .Take care allThanks in advance. Kind Regards --Shweta

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Hello,the overcurrent and over-temperature trip (deglitch) times are not given in the datasheet.My focus is mainly on the OC trip time, that's because I intend on adding series inductors to the motor phases to protect from motor windings short, thus the trip time is required to determine the minimum required inductance.

Hello everyone, i'm working with a nucleo F401RE and the X-NUCLEO-IHM03A1 High Power Stepper Motor Driver (Powerstep01). I've been having problems for several days now and I've been looking for solutions but without success. I downloaded the .zip file : .x-cube-spn3 and my goal is to integrate it into a project on STM32cubeMX. But I'm already stuck at this level because I don't know which file to use and how... Could you help me please  Thanks for your Help !

my customer is asking for , to calcualte his sensors.Thank youIleana

Hi all,Thanks in advance for your timeregarding the specific microcontroller STM32G474RE which has a total of 64 pins. How can I know how many of them can be used as PWM outputs???Thank you

Hi! I'm can't understand SPI protocol on STM25R95ST25R3916. I tried to send commands via SPI like in datasheet but did not have any response. Do i need to toggle IRQ_IN pin every time i send a package over SPI? Will chip work without CS on every message ?

Hi, I have 50Hz sinewave with 660mVp-pk, should i connect this to SDADC analog input? It can measure negative cycle of the sinewave? i.e. If i configure SDADC as single ended zero reference mode then it can measure negative cycle of the sinewave?Nandish