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Hi,i am using STM32G0B1KB and the UCPD peripherals to implement an USB-PD device with 2 ports:- Port 1 is DRP- Port 2 is Source onlyI need the dead battery pulldowns for port 1, so I will connect the UCPD1_DBCCx pins with the UCPD1_CCx pins as described in the manual. However, for port 2 I don't need to present the dead battery pull-downs - when the MCU is unpowered (dead battery) and the user connects some other device (e.g. smartphone) to port 2, simply nothing should happen. The manual states:> If dead battery behavior is not required (for example for source only products), then UCPDx_DBCC1 and UCPDx_DBCC2 pins must both be tied to ground.What resistance can be used to connect those pins to ground? Since I don't have any pins left, can I instead use the DBCC pins for something entirely different? E.g. connect LEDs (to GND) or some other digital output with a weak external pull-down resistor (e.g. 10kOhm)? Will this prevent the MCU from enabling the pull-downs?Thanks!

Board: NUCLEO-N657X0-QRevision: CProblem: MCU cannot pull PA2 to low, only to about 2.5V. I tried it in push-pull and open drain modes. SB6 has been desoldered to isolate it from the analog attenuation circuit, but it didn't work with it soldered. It doesn't work with the "GPIO_IOToggle" example project either, same behaviour. Pulling the pin up to 3V3 works just fine. PA2 is the pin so far which has caused this issue. Holding the reset button makes the pin go high (3V3), indicating a hardware issue, as far as I know. My best guess is it is somehow pulled up through a pull up resistor, but I haven't found any evidence of it in the documentation.I attached some documentation which I investigated.Any help is appreciated, thank you!

Hello,   hope everyone is well. I'm working on the software side for a micro mouse bot. We're planning on using the STM32G070RB for the microcontroller. For prototyping, I'm using the NUCLEO-G070RB. I separated the ST Link from the board, and wired the two together, as shown below (source and the schematic:( And here's the schematic below: When I flash a program (I use openOCD, but I've also tried STM32CubeIDE), it works until I unplug the ST-Link, then it doesn't seem to work until I plug it back in. Any advice? Am I missing an additional connection?  To clarify, the Arduino powers the Nucleo board.

Hello,I have an STM32G441 and using DMA to transmit some SPI data. All works so far. The problem is the chipselect. I am using the software chipselect. So before I start the DMA I pull CS low. Then when the DMA complete interrupt fires I pull it high again. The problem is, it cuts off about 3 or 4 bytes. This is obvious because the DMA is done while there is still SPI data in the buffer. What is the go-to solution for this? How can I reliably get an interrupt when the DMA is done and the SPI is done transmitting all data? At the moment I simply start a timer when the DMA is done that triggers a second interrupt after a certain time that I measure with a logic analyzer. Seems a bit makeshift and has to be adjusted each time the baudrate is changed. I also noticed that all the SPI interrupts fire premature. So is it the only solution to waste a timer on the SPI?

Hi,How to set UID using CubeMX and read in STM32L476 and use it for device commissioning process?

I have built a custom board by using STM32MP257F and I want to boot on USART6. I have not succeed to boot on USART6 when I compile my own fsbla by change the device tree of TF-A.I got a suggestion from ST Dev team to run this ROM tracedump wiki-stm32mp-addons/MP2RomTracesDump at 6.1.0 · STMicroelectronics/wiki-stm32mp-addons · GitHub and it gave me a positive output on USART6. The soldering was OK. The BootROM was OK and the UART6 was alive. This is the output from my USART6.=================================================== == STM32MP25 cut2.x bootrom display traces V1.01 == == Date of compilation : Jun 26 2024 - 11:25:23 == =================================================== Executed on Cortex A35 - Aarch64 Successfully booted on interface SD instance 1 Reset reason : POR reset Chip state : CLOSED_UNLOCKED ================================================================== Bootrom traces ================================================================== [INFO] -

I am currently using an STM32L011F4U6 to communicate with some other chips and it is failing to pull either I2C line down to GND fully when signalling, they are seemingly clamped to approximately 1.2V at a minimum as shown below making it impossible to communicate with my I2C devices which need the I2C lines to drop below 0.5 V to register a low state. Is this something anyone else has dealt with?I2C waveforms with 10k pullups at Normal Mode speedsI am using PA9 for SCL, PA10 for SDA, using the I2C1 peripheral.In the photograph above I am using 10 kOhm resistors for pullups and the speed is Normal Mode. I am targeting Fast Mode speeds and use 2 kOhm resistors in the original circuit but I changed both to see if they had any effect - which they did not. The issue is the same in fast mode with the stronger pullups.I have probed the circuit with a ammeter to verify the required sink current is within the expected range. With the 2 kOhm resistors the current sank to pull down to 0 V w

Hello,I am currently reviewing a hardware design based on the STM32H563ZIT6 and have some questions regarding the internal and external behavior of the NRST pin.My main question is how the NRST pin operates specifically during an NVIC_SystemReset.Currently, we are using an external pull-up resistor (connected to 3.3V) on the NRST pin.According to the Datasheet (DS) and Reference Manual (RM), I confirmed that the NRST pin has an internal weak pull-up (RPU), which is typically 40 kΩ.Although the Datasheet and Reference manual do not explicitly disclose the internal circuit diagram of the NRST pin used during NVIC_SystemReset, I found information in the community stating that NRST internally has an "Open-drain" structure.link : https://community.st.com/t5/stm32-mcus/why-my-stm32-doesn-t-start/ta-p/49367 Therefore, I assume the circuit topology is as follows:Rpu: STM32 internal weak pull-up (typically 40 kΩ)Rnrst: The external pull-up resistor we attached (currently 10 kΩ)Vnrst:

Hi.I created code and flash memory that is already 80% used. Is that okay? Will it affect performance?Thank you:)

Is there a board schematic for STM32L432KC somewhere?I want to acces pin PA13. But I can find no connector or easy acces point.Thanks

May I ask how the FDCAN Message RAM offset allocation,  Tx and Rx BufferElementSize can be configured on G4 Series. As in cubeMX it doesnt give me the option to like the H7 series. Or is that done automatically by the core when generating the code?If so, could I know if it is possible to change it? 

I am using STM32G491RE - NUCLEO. connected to the ADM3055e CAN Transceiver Currently I am trying to send 12 Bytes of Data from IXXAT Terminal over to FDCAN1 which receives the message fine and then Output the Message on FDCAN2 though a buffer. So My logic is when a message pass the filter it gets called by the Fifo0Callback and push it to a buffer below. This works fine the buffer also get the full 12Bytes of data same FD format and everything checked out.But when I try to add the message to HAL_FDCAN_AddMessageToTxFifoQ(&hfdcan2, &TxHeader2, TxData2). Where TxData is the dequeued message from the buffer and copys the 12Bytes. The message somehow gets truncated to 8Bytes on output. Heck, when I add "if (HAL_FDCAN_GetTxFifoFreeLevel(&hfdcan2) > 0)", It somehow says it is full even when starting the code.I have been suspecting because I cant set the HAL_FDCAN_ConfigTxBufferElementSize and HAL_FDCAN_ConfigRxBufferElementSize or even the messageRam offset

Hi all,during testing a custom project with NETXDUO on NUCLEO-H563ZI I've noticed that sometimes web server response is rather slow.Wireshark shows rather frequent TCP retransmissions and other problems.To be sure, I've tried an example from ST (Nx_Iperf) with the same result.It seems that problem is in ETH_Prepare_Tx_Descriptors(), in check of Tx Descriptor: /* Current Tx Descriptor Owned by DMA: cannot be used by the application */ if ((READ_BIT(dmatxdesc->DESC3, ETH_DMATXNDESCWBF_OWN) == ETH_DMATXNDESCWBF_OWN) || (dmatxdesclist->PacketAddress[descidx] != NULL)) { return HAL_ETH_ERROR_BUSY; }I removed this check and TCP retransmissions became much less frequent.Is there a better solution?

We have provided SWIM, 5V, and GND connections to the microcontroller for programming and debugging purposes. Is it possible to program the ST8S001J3M3 MCU using the ST-Link V2 or V3 via the 5V, SWIM, and GND connections?Please find the attached reference schematic for your review. Additionally, if there are any recommendations or required corrections in the schematic related to programming connection, kindly let us know. We look forward to your valuable response.

Dear all, We are using the STM32N6570-DK to encode a video stream (800x600px) and store that at a reasonable data rate to an external sd-card.I have extended the VENC_SDCARD_ThreadX example to a certain extent to cover the obvious timing differences between the video capture loop and a disk write loop. The sample code is a great way to go forward, but at the moment we reach a data write rate of about 25kb/s when using FileX.We have initially used the HAL implementation but I have changed the fx_stm32_sd_driver_glue.c code slightly to use the BSP layer for card speed negotiation that is not present in the HAL layer; debug output shows that we're at least using 4-bit wide data transfers>:CardInfo type 1, version 1, class 1461, spd 0 Inst PWR 00000013 CLKCR 00004004  It seems that just before reaching down to the HAL layer, the single transaction (~200blocks at once, typically), is split  into single sector writes in the sd_write_data function (fx_stm32_sd_driv

I have successfully integrated a ST25R100 NFC reader with an ST25DV04K tag. Reading and writing data works perfectly.But once you enclose the system in its housing, writing doesn't work, even though reads still succeed.I presume this has something to do with that tag rely entirely on the RF field to power their EEPROM during write operations.Can I increase transmitting power via software?I can't find it the Documentation.Any help greatly appreciated!William

Hello,  I'm using STM32CubeIDE 2.0.0 + STM32CubeMX 6.16.1 + FW_H7 V1.12.1 I have a problem with USBX RNDIS.The generated code on file ux_device_descriptor.h  at line 308 is: #define USBD_RNDIS_EPINCMD_ADDR 0x81U In the exemple code of STM32H735-DK find on stm32-usbx-exemple repo I have this #define USBD_RNDIS_EPINCMD_ADDR 0x82U The USB device is well recognized be my computer (windows 11) only if the value is 0x82U. My questions:  - why it doesn't work with 0x81 - is there is a tips to modify this value on Cube ? Actually I add an error at the end of the file if value is 0x81..   Thanks for help !  

Hello, Using controller: STM32F767BIT6 External SRAM: SRAM-1x16M-48TSOPI Interface SRAM via FMC is successful, currently using heap_4 and tried to work with moving variables & complete heap to external SRAM and it works. But I want to use external RAM as extended RAM if internal RAM get exhaust. I have seen some examples in Keil which allow to do the same by using .ANY .ANY (+RW +ZI)  So, this will allow to use runtime RAM if it is free, so just for thoughts, if I define .ANY in internal and external RAM then in runtime it will decide where to go based the available size. But in STM32CubeIde, not sure how it can be done. So, I need help or examples to understand how we can actually use external SRAM as extended RAM. Thanks, Nitin

Could you please help me find out how much internal storage space this model STM32F427VIT6 has? Thanks a lot.

Hello.For example, on the datasheet of ST25R200, on page 10, it shows 2 capacitors between pins VDD_A and GND_A, but on page 13 it is not shown the recommended values of these 2 capacitors.Would they be 2.2uF and 10nF, or 1uF and 10nF, for example?I'm talking about pin 14 in this case.Regards. 

I used version 6.14 beforeand could choose OrCAD's package There is no option for "Cadence" in version 6.16.1

I am creating a program that jumps from the bootloader to the application program using the STM32F410.The bootloader uses 0x08000000 to 0x08003FFF.The application uses 0x08004000 to 0x08007FFF.The bootloader program jumps to the application program successfully,but after entering the application program, the USART interrupts do not function.The SPI in the application program continues to operate after the jump. I'm posting the jump-related program.Can you figure out what the cause might be? I'd appreciate your help.【Bootloader main.c】 void jump_main(){ __disable_irq(); // Clear all interrupt bits for (uint8_t i=0; i<8; i++) { NVIC->ICER[i] = 0xFFFFFFFF; NVIC->ICPR[i] = 0xFFFFFFFF; } int * address = (int *)0x08004004; __set_MSP(*(int*)0x08004000); *(int*)0xE000ED08 = 0x08004000; ((void (*)())(*address))(); } 【Application main.c】 int main(void) { /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MCU Configuration---------------------------------

I've been developing an object detection application from scratch by using STM32CubeMX and IDE. The evaulation board that I'm using is STM32N6570-DK.I actually succeeded in implementing the continuous displaying of camera input. And then I tried to import the AI related code from the object detection code in STM32 Model Zoo Services.But unfortunately I found that there is a problem while executing Run_Inference() function.I traced the execution step and then finally I found that there is something wrong in handling NPU interrupts.In the ATON_STD_IRQHandler() in ll_aton_runtime.c file, irqs variable has the value of 0x16000000 which leads to exit().To find out the expected value, I downloaded the object detection code in STM32 Model Zoo Services, and then found out the irqs variable should have the value of 0x10000000.I would like to know the meaning of each bit in the irqs variable, which seems to be ATON_INTCTRL_INTREG variable.STM32CubeMX: 6.16.1 for Windows 11STM32CubeIDE: 2.0.0STM3

Hello everyone.I am doing a TOUCHGFX project with STM32H750IBT6, W25Q512, IS42S32400F-6TL. I took my first screen printout and the image came out shifted. I am using my screen vertically by rotating it 90 degrees in Touchgfx Designer. I still haven't solved the problem. I would be very happy if you could help me.

SummaryOur eventual product will use the LSM6DSV320X but right now, all we have is an LSM6DSV80X chip on the STEVAL-MK1247A breakout board. The products are close enough that I can test on the 80X. I am currently trying to implement the burst read feature of the chip. I am having two main problems when doing the burst read:1. After some time, I am getting tags in the FIFO for parts of the sensor I have not enabled (e.g. I get a temperature tag despite not having enabled temperature batching)2. For some reason, my INT1 pin is triggering even though the FIFO watermark is not met. PlatformBoard: Nordic nrf52840-dkOS: Zephyr RTOS (nRF Connect SDK v3.2.0)Sensor: LSM6DSV80X on the STEVAL-MK1247A -- SPI Clock at 8 MHz BackgroundIn Section 9.8 of AN6119 it describes how to retrieve data from the FIFO and there are two methods provided:1. Read the FIFO_STATUS1 and FIFO_STATUS2 registers to check how many words are stored in the FIFO.This information is contained in the DIFF_FIFO_[8:0]