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Hi,I'm working on a nucleo L010RB board, i wanted to test my application on battery supply but the USART2 didn't work without the usb ST-LINK so i assumed that the USART3 would work but it's the same problem.When I start the nucleo with only battery the nucleo seems to start up right (I am making the user led blinking in the program loop.) but I don't receive any prompt on my uart and as soon I plug the usb I start getting all messages.I am assuming that there is something with ST-LINK waiting to be link with a computer.PS: I correctly put the JP5 on E5V.Thanks for the help.J

Hi,Please find attached, Below is the schematic which i prepared for custom PCB using STM32F103C8T6 MCU. But i am unable to enter in download mode. I have tried placing same jumpers for boot mode as in Blue Pill.Only component i have omited is 32.768 Crystal for RTC. i am not using internal rtc so i have not used in my board.But does that affect the downloading via USART1 ?Please advise. tried everything possible but not getting success. This is 1st time i am handling STM32 MCU.

Hello, I am currently researching about possibilities in STM32MP1 dual core. I am trying to create user program that uses HW Semaphore. On M4 side is everything clear. But I cannot create program for A7 core. Here is what I think that I suppose to do:- create user program with hwspinlock.h- build corresponding version of linux kernel- include kernel files to makefile.But when I try to make my custom program, i got much errors from kernel source tree.For me, how to properly include hwspinlock framework is not clear from ST wiki or hwspinlock framework documentation.Thanks for any response.

If I write HAL_Delay in the main function, then code execution gets stuck at this place.int main { HAL_Delay(1); }Code execution does not exit the loop at this point.while((HAL_GetTick() - tickstart) < wait)I think because the SysTick_Handler interrupt is not executed and therefore uwTick is not incremented.I set the SysTick timer to high priority, but nothing changed.Why is SysTick_Handler not being executed?SysTick_Handler should execute every 1 millisecond and increment the uwTick variable.HAL_Delay in the while loop works correctly, HAL_Delay does not work in the main function. 

Hello,TIMER8 is configured with Reset Mode. where, external pulse is given to TIM8_ETR (PA0) and timer is configured in reset mode as follows.The timer pulses are synchronized with the external signal and it works fine.Now, I want to provide delay after sync with external pulse. i.e. the timer PWM should start after few microseconds.Is there any way to provide delay after sync (not keeping controller busy in the delay)?Thanks,Nikhil 

Hi,I just upgraded and migrated my project to CubeIDE v1.13.0, everything works fine with STM32H750 chip.But I found a compile warning in main.c which is belongs to generated code.Is it possible to fix this warning in the next version? Thanks!BRs,-Engin

Hello,I am currently developing a DSP application on an STM32F439ZI Nucleo board in combination with a Pmod I2S2 audio codec board. So far, basic testing and filtering worked fine until I started to try FFT processing. I isolated the issue in a simple test program (code attached). I am using the CMSIS DSP library for the FFT and IFFT.This is what the code does:Audio sample data is transferred over I2S using DMA in circular mode. The DMA buffer itself is rather small in order to have the TxRxHalfComplete and TxRxComplete ISR called every time after one audio sample from the left and right channel has been received. I need this because I have an FIR filter function that needs to be called for every sample transmitted and received (tested and works, but not used inside the test program). Inside the ISRs the incoming samples are converted from 24 bit signed PCM into float32 and copied into a bigger circular input buffer. As soon as one half of the buffer is filled with data a flag is set.

Dear all,I am using NUCLEO-H745ZIQ for the UART communication.I try to use the UART RX Interrupt to get the data from PC. I set the UART parameters as same as I was use for the STM32F4 which work fine. Currently, I would like to use both of CM4 and CM7, CM4 used UART1 and CM7 used UART3.My problem is the UART Rx interrupt is go to HAL_UART_RxCpltCallback only in the CM7, but for the CM4, it never go to the HAL_UART_RxCpltCallback function.However, for the other interrupts are work find for both CM4 and CM7 such as timer interrupts.Could you please help me, may be I did some miss configuration.Thanks in advance

JW

Hi, I would like to make a serial to usb converter. The problem is that I need to make a usb-to-32 serial port converter.I've seen that there is nothing like this on the market and not even chips that do this.What I came up with, is to use STM32s to create UART-to-USB converters (maybe using 3 or 4 chips to get to 32 uarts). I tried to search on the internet, and I saw that you can create a USB virtual com port with a STM32, but I have some questions:1 - Is it possible to create a "multiple USB virtual com port" with an STM32, then create a USB device that a PC sees as 3 or 4 COM port?2 - Is it possible to use the DMA to directly connect a UART interface to a USB virtual com port, in order not to use the processor to move data.3 - If the first two questions have a positive answer, can I connect 3 or 4 MCU STM32 to a USB hub, can I have problems?

I'm trying to use aci_gatt_update_char_ext but it requires connection handle.But in Custom_STM.c file only have service handle and characteristics handle.Where can I find connection handle and what is typical variable for it?

Hello,i want to build a project using two Arduino boards, which can transfer data (multiple strings or floats) using NFC. I was searching on the internet and found the M24SR64-Y or the ANT7-T-M23SR64 module. I've read on the internet, that it can be used with Arduino using I²C, however I didn't find a lot of existing projects which use this system. I was wondering, if I can use this chip/module to set up a communication, where 2 Arduinos both using the chip/module can transfer data (multiple float. strings, ...) between each other and maybe if there is already i library for this chip I could use. Thank you in advance! 

After a central device has made a succesful conection to my peripheral device (BLUENRG-LPS), I want to advertise ADV_NONCONNECTABLE / SCANABLE advertisements. void Ble_AdvNonConnectable( void ){       volatile tBleStatus ret = BLE_STATUS_SUCCESS;        ret = aci_gap_set_advertising_configuration(0, GAP_MODE_GENERAL_DISCOVERABLE,                                                                                  ADV_PROP_SCANNABLE,            &

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Hi @channelI am using the B-U585-IOT2A board based on STM32U585 and am configuring TZEN and checking some sample programs. i am not able to reset the board either through the push button or through the software code "NVIC_System_Reset()" and when debugging am getting a break error as shown below:The debgug console is returning the error:On searching the community i found that there is some error in the memory configuration of the secure and non secure area. the linker script i have used is the default one that stmcube mx has generated. the option byte i have used is as below:The issue is i can run my program only once(functionality works) but neither am i able to reset or run the program again while debugging again.please assist me in solving the issue.Awaiting support in this regardThanks and RegardsPhilip Jose   

I am currently writing code for STM32F107VC CPU, and I want to use ADC, calibrating it first. I have noticed a strange thing in the ST HAL library.The datasheet on page 223 reads "Before starting a calibration, the ADC must have been in power-on state (ADON bit = ‘1’) for at least two ADC clock cycles."However in the firmware for this CPU (stm32f1xx_hal_adc_ex.c) the function HAL_ADCEx_Calibration_Start first disables the ADC, then waits for 2 ADC clock cycles. It doesn't wait after enabling the ADC again. The comment in the code says "Calibration prerequisite: ADC must be disabled for at least two ADC clock cycles in disable mode before ADC enable". And the code that follows there disables the ADC (clears ADEN bit).Why does the HAL code wait two ADC clock cycles after disabling the ADC, when the datasheet clearly says it should wait after enabling the ADC? Is this intentional for some reason (I checked the errata, but couldn't find anything), or did the author of this functi

Test Description: Receiving an image of 1280x960 through the image sensor and saving the image to external PSRAMTest Environment- MCU : stm32h753ai- Camera Module : AN0134- psram : is66wve4m16ebll-70bliCurrent situation- Create image buffer in internal buffer and check image capture using HAL_DCMI_Start_DMA function (declare size smaller than DCMI maximum size of 65535)- Write a certain incremental value to the internal buffer using FMC and read the value.- Write some image data stored in the internal buffer to PSRAM and read it.- If you try to save directly through HAL_DCMI_Start_DMA by putting the address of PSRAM instead of the internal buffer address, an error occurs (Error code: 65).Question1. I am wondering if it is possible to directly input the memory address of PSRAM to HAL_DCMI_Start_DMA.- In the example of AN5020 documentation, it seems that 1280x1024 images can be processed, so please check if it is really possible.2. If the PSRAM memory address cannot be used directly in H

Struggling with an issue with the WB55. I'm attempting to see BLE stack debugging through the UART. I've tested the redirect without WPAN being enabled and found the hardware is functional. When I enable WPAN debugging, redirect function is never called.main.cint __io_putchar(int ch); int __io_putchar(int ch) { /* e.g. write a character to the USART1 and Loop until the end of transmission */ HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, 0xFFFF); return ch; } Setting up the debugging for WPAN has been done to setup guide:MX_USART1_UART_Init() isn't called in the main() function but called in the DbgOutputInit() function:/* USER CODE BEGIN APPE_Init_1 */ #ifdef DEBUG DbgOutputInit(); #endif /* USER CODE END APPE_Init_1 */I've verified the initialization code is being called:void MX_USART1_UART_Init(void) { /* USER CODE BEGIN USART1_Init 0 */ /* USER CODE END USART1_Init 0 */ /* USER CODE BEGIN USART1_Init 1 */ /* USER CODE END USART1_Init 1 */ huart1.Instance

I am working with a NUCLEO-WB15CC, and it seems that I can't read or write anymore. When I connect via ST-Link in STM32CubeProgrammer (v2.14.0) I just get Error: Data read failed When I try to read registers, I get the same error.I also can't erase the chip: Error: Mass erase operation failed.Please verify flash protection RDP option byte is AA, so that can't be the problem.For write protection, I don't really remember what the default values was, but they are: 0xff, 0x0, 0xff, 0x0,I can still see target information in Programmer but nothing else seems to work, have I bricked the chip? Edit: I noticed I also can't read registers via the CLI, so maybe it's not a bug in STM32CubeProgrammer.This is the command I used: STM32_Programmer_CLI.exe" -c port=SWD -r32 0x08000000 0x4 Which results in Error: failed to read the requested memory content Read protection seems to be disabled:Here are all the option bytes:OPTION BYTES BANK: 0 Read Out

Hello,I would like to connect a TESEO LIV3F to an STM32 MCU that is powered using a 2.4v supply.Im wondering if I can drive TESEO's Vcc_io with a 2.4v supply or if I should use a 3.3v according to the datasheet and put a level shifter between them both.The first option is far the best for me ...Thanks,

I would like know if STM32G0C1VE meets the AEC Q100 qualification for automotive applications. 

I am using the AIS2IH and polling the DRDY bit of STATUS to see when a new sample is available .  I am using single data (on demand) mode and ODR bit is set.  The spec sheet says that DRDY returns low after the high part of X,Y or Z has been read, but for me DRDY is remaing high.  Maybe I am setting the mode incorrectly, timing soft reset badly?  Thanks.Code :SPIwriteOneRegister(CS_SENSOR1, CTRL_2, 0x48);  // soft reset// Perform a read to Hi x to reset DRDY :tmp = SPIreadOneRegister(CS_SENSOR1, OUT_X_H);SPIwriteOneRegister(CS_SENSOR1, CTRL_1, 0x20);  // Select Single data modeSPIwriteOneRegister(CS_SENSOR1, CTRL_2, 0x08); // Set Block Data Update to 1 SPIwriteOneRegister(CS_SENSOR1, CTRL_3, 0); // Set SLP_MODE_SEL == 0 to enable active high external trigger lineSPIwriteOneRegister(CS_SENSOR1, CTRL_6, 0x34); // filtering etc 

Hi,I have a working sigfox prototype based around a STM32WLE5. The generation of the Sigfox ID and PAC has so far been done by uploading the chip certificate (236 bytes at 0x1FFF3F04) to https://my.st.com/sfxp to get the credentials back. This process looks hard to automate. Is this for development only?For production - what is the recommended solution? Are we supposed to procure credentials ourselves via Sigfox CRA? https://support.sigfox.com/docs/sigfox-credential-cra.Thanks,

I'm trying to develop an STM32WB55-based BLE wireless circuit.I designed a custom STM32WB55 circuit and I found that the circuit consumes ~ 7 mA when 32 MHz clock and BLE fast advertising mode.Unfortunately, my circuit should allow 7 days of continuous operation with a ~100 mAh battery.So, I wonder how to reduce power consumption.So, could you guys suggest anything possible on both the hardware side and the setting and programming side to reduce power consumption?Currently, SMPS is not in use but I'm planning to use it. 

Hello,I am using STM32CubeIDE version 1.13.0 together with STM32CubeMX version 6.9.0-RC9 and the STM32F746IGT6 microcontroller.I am trying to use TIM2 as a 4 channel Input capture unit, each channel with it's own independent DMA . For this i have the following DMA Streams available:- DMA1 stream 5 - for TIM2_CH1- DMA1 stream 6 - for TIM2_CH2/CH4- DMA1 stream 1 - for TIM2_UP/CH3- DMA1 stream 7 - for TIM2_UP/CH4 The problem i am having is that if I add the DMA1 stream 7 .... stream 6 & stream 1 can no longer be added due to conflicts. In the generated code i see that both events UP & CH4 get linked to this DMA stream so i am guessing that this is why the MX won't let me add the other 2.  Now my question: - Even though the tool does not allow it since one trigger can be selected for one DMA tream (Channel selection) i think it should be possible to have the following configuration:- DMA1 stream 5 - for TIM2 CC1 - DMA1 stream 6 - fo