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 Hi STM32 Team,I am working with the STM32F7508-DK development board and interfacing it with an SD card using the SDMMC peripheral. The 1-bit data transfer mode works flawlessly, but when switching to 4-bit mode, the interface fails to operate as expected. Please guide me to resolve this issue.  Thanks and Regards,A. Ajith Kumar

Originally a reply in this thread: https://community.st.com/t5/stm32cubemx-mcus/bug-cubemx-should-warn-h7-users-against-pc2-c-pc3-c-pitfalls/td-p/708817 Hi,What's wrong with PC2_C and PC3_C???  I am using them as normal GPO on my board, but it's not working, while PC0 and PC1 are working, same initialization and HAL_GPIO_WritePin() operation.ThanksPeter

Using the Zigbee stack as a coordinator, is there a callback available to notify when a new device is associated in the network?We observe the following in the M0 log:[M0] [00000015.076][PLATFORM] nwk_handle_assoc : Association accepted, sending response (0xb0dc, 0xa4c1383054f9cec1)We can detect the new device in the ZB_NWK_NIB_ID_NeighborTable, but having a callback to trigger on association would be very helpful. I've checked the documentation and examples but haven’t found any information on this.Thank you! 

HelloI'm working on a 320x240 SPI LCD using partial frame buffer strategyThe number of blocks is configured to 2 and the block size is configured to 19200 bytes.The problem is that flushFrameBuffer draws only 240x20 pixels at a time, however I would expect it to draw 240x40 at a time (240x40x2(16-bits) = 19200 bytes)Does anybody know if that's a TouchGFX limitation, or it can be changed ?

Hello,I need the BSD-File for STM32L151RCT6 for Boundary Scan. Does anyone know, where I can get it? In the recources section I can only find an older .zip file with bsd files for other processors.Thanks.

It seems that STM32H563MI has four I2C ( I2C1 ~ I2C4):However, the corresponding STM32H563.svd only includes 2 I2C ( I2C1 ~ I2C2).https://stm32-rs.github.io/stm32-rs/STM32H563.html 

SEE EDITI am using the STM32H7B3I-DK. I am trying to write my own simple SPI ISR to handle transmitting and receiving of just one byte I have gotten the slave working with my ISR (while master used HAL). I am now implementing on the master and having issues with the transmit. When I am in debug mode and transmit one byte then hit a breakpoint it works fine. However, when I just run normal after I start transmitting, my board says it starts receiving button presses. It is acting as if someone is randomly pressing all the buttons connected on the PC2 (input- pull down - active High) line. The weird thing is I don't have this issue if I use the HAL Transmit, only when I use my transmit. This occurs even if the slave is not on and the master is just sending bytes to a non powered device.My SPI Setup uses SPI2 which PC2 could have the AF SPI2 MISO but I do not have it configured that way. Could the spi be interfering with the GPIO input internally? Any other suggestions to try? SP

I have a custom board, which uses STM32H747IXH6 and MB1166 LCD screen from the related discovery board. I am trying to get TouchGFX up and running on this custom setup, but in my PCB design, I missed out the dedicated TE pin in the connector (I'm following the RaspberryPi DSI convention of DSI CLK, Data Lanes and I2C only). I can initialise the display, but I cannot get my TouchGFX application running. The process at the moment is as follows:Init DSI HostReset the LCD displayConfig DSI PLLConfig Host TimeoutsConfig PHY TimersConfig LPCommandConfig AdaptedCommand ModeInvert clock and data pins (to correct for PCB error)Register busIO for OTM8009AInit OTM8009A (as per Discovery examples)Config Flow ControlForce RX Low PowerInit LTDCActive low VSYNC and HSYNC polarity803x483 total width and height (800x480 + porches)Format RGB888Double frame bufferStart address 0xD0000000Init FMC (IS42S32800J)Init as Bank 2Init TouchGFXStart TouchGFX Thread  Now when TouchGFX starts, taskEntry s

Hello,I'm using it with a custom board. I'm facing problem with switches the ST25R95 into low power consumption modeWhen I send Calibrate command, it can work and return 0x78.But if I send another command like wake up in IRQ_IN(07 0E 08 01 00 38 00 18 00 00 60 00 00 00 00 00) or tag detection(>0x07 0E 0A 21 00 79 01 18 00 20 60 60 70 80 3F 08),ST25R95 return me just 0xFD,When I set it to wake up when timeout(0x07 0E 01 21 00 38 00 18 00 60 60 00 00 00 00 08) ,it return me {0x00,0x01,0x01},it is correct.And I observed that after I sent (0x07 0E 0A  A1 00 F8 01 18 00 00 60 60 00 00 3F 01 ) to calibrated the DacDataRef,ST25R95 entered idle mode because there was not any reaction when I placed the tag on top of the antenna.I also wanna know that what will I get from  IRQ_OUT when  I send command like wake up from tag detection,dose any reaction with IRQ_OUT as soon as I place the tag on top of the antenna?Kindly help me out. &n

Hi, May I know the available test points on  STEVAL-D25R16B for me to connect S11 of NANOVNA to ? Also, which of the register values (space a and b registers) are essential to set the board to high impedance (VNA mode) before connecting the nanovna to the test points while the board is powered? Thank you! Best Wishes,Cindy

I am using STM32H7B3I-DK running a touchgfx application and acting as SPI Master, and Nucleo-H743ZI as SPI Slave. Both are configured in interrupt mode not using HWNSS. The Master is sending 0,1,2,3,4,5,6,7, but the slave is only receiving 0,2,4,6,0,2,4,6.I am sending one byte at a time and receiving one byte then adding it to a buffer. The master is properly sending data, as checked by oscilloscope. I have tried introducing a HAL-Delay(1) between transmissions and the data is then received perfectly fine; however, that is way to slow for proper communication. I have double checked the compatible settings for Master-Slave communication in the .ioc files such as Data Size, First Bit, etc...Here is my following relevant code for the master: for(;;) { HAL_GPIO_WritePin(GPIOI, GPIO_PIN_0, GPIO_PIN_RESET); // Pull CS low for (int i = 0; i < 8; i++) { data[i] =i; HAL_SPI_Transmit(&hspi2, &data[i], 1, HAL_MAX_DELAY); // Transmit one byte HAL_UART_T

I repeatedly encounter the issue of not finding suitable 3D models for ICs from ST. There are some library providers that offer not only symbols and footprints but also low-quality 3D models. However, I tend to create the libraries myself, both for work and personal use. This is because the libraries from various providers seem either poorly made or poorly automated. But that’s beside the point—I would greatly appreciate it if all 3D models for ST products were available for download on the product page alongside datasheets and application notes.Although I have managed to extract 3D models from larger 3D assemblies, such as NUCLEO boards, this is incredibly time-consuming. Thank you very much.

 Hello Developers,In my product solution based on the STM32L496VGTX, I am currently adding NFC DFU functionality. Using the FTM Demo Feature in the ST25 NFC Tap App, we were successfully able to update and store firmware packets using the mailbox of the ST25DV04KC module.Issue Description:I am encountering an issue when attempting to upgrade with a BIN file of 409,984 bytes (410KB). Specifically, the issue occurs when the file size reaches 405,982 bytes; at this point, the update process fails with a timeout. However, when I use a 399,360 bytes (390KB) BIN file, the update process works successfully every time without any issues.Steps Taken:Tested different file sizes: The 390KB files work perfectly, but the 410KB files consistently cause a timeout during the NFC DFU process, specifically at 405,982 bytes.Tried increasing buffer sizes: I increased the buffer size from 6000 to 15000, but the issue persists.Checked NFC connection and signal strength: No issues were detected with the

Hello, I’m working with an STM32L412KB on an evaluation board, and I’m facing an issue with receiving UART data. Here’s a quick overview:Setup: The device receives 5-byte packets over UART every 30 ms using the HAL UART interrupt mode (HAL_UART_Receive_IT).Issue: After running for a few minutes, the received packet occasionally gets corrupted—typically with the first and last byte becoming swapped or confused.Attempted Fixes: I’ve cleared error flags in the HAL_UART_ErrorCallback, and I’m restarting UART with DMA after an error, but the corruption persists.I have tried DMA and circular buffer, but the results are the sameBelow is a code example showing the logic (I cannot share the actual code due to NDA constraints):. HAL_UART_Receive_IT(&UART, packet, BUFF_SIZE); // Initiate UART receive in interrupt mode void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) { flag = 1; // Signal main loop to process packet HAL_UART_Receive_IT(&huart1, packet, BUFF_SIZE); // Re-init

 I am using BLE_LLD_CHAT APPICATION (ble_lld v.18) on 2 STM32WB15 SDK BOARDs and the following ERROR occurred.The test condition is to use serial emulators on both ends and repeat transmission and reception at 1 second intervals.The same condition occurs even after retesting.[M0/SYS] ERROR: M0 can only manage one command !!How can I solve this problem?

Using a Nucleo-F411RE board modified to have 8MHz HSE crystal oscillator and running the OTG peripheral in forced host mode, we are working on implementing our own host stack.  With the current code no IRQs trigger until a device is physically attached to the port.  However, when we plug up a device then the DISCINT bit in GINTSTS is set along with PCSTS and PCDET in FS_HPRT.  Since the host port IRQ is unmasked in FS_GINTMSK the code correctly branches to the global USB ISR, but we are curious as to why the DISCINT (device disconnect) but would also be tripped.  We have verified that this bit is not prematurely firing before we physically plug in the USB device.  The register setup after our USB hardware configuration is as follows:OTG_FS_HOST FS_HCFG 0x00000200 0x50000400 FSLSPCS 0x0 [1:0] FSLSS 0 [2:2] HFIR 0x0000ea60 0x50000404 FRIVL 0xea60 [15:0] FS_HFNUM 0xea603fff 0x50000408 FRNUM 0x3fff [15:0] FTREM 0xea60 [31:16] FS_HPTXSTS 0x00080200

The product page shows that the STM32WBA50KG supports I2S for a serial audio interface. I want to connect a Class-D Amp and cannot find any reference to I2S or SAI in the data sheet or programmers reference manual. Does the processor support I2S?

I tried all 3 available demos: default, FP-AI and Datalogger.At last I flashed the original default demo back. All tests are done USB-powered or with LiPo.Establishing a BLE connection with iPhone works in 10% of the cases.Using an Android smartphone is more successfully.All issues found:- No plot data of gyro and accelerometer, but FFT and Board Pred Maintenance worked.- In plot data the axes and 3 colored lines were shown at zero level, but no lines are changing (regardless autoscale setting).- FFT shows sometimes lines horizontically like in plot data, no vertical bars and frozen.- Or no sensor data at all, but I can turn on/off LED (very nice)- Or plot data does not scroll, lines were drawn back and forth- BLE interrupted on iPhone Version FW: WB5MMG_STSW-PROTEUS_1.1.0 (from STEVAL-Proteus1 package) BLE-CbMHaving the latest BLE stack from Github (V1.20.0 build 2), because one ST employee noticed an older one (V1.19.0) in the current STEVAL-Proteus1 package. I tried to sho

Hello, Currently I am trying to configure SPI with DMA, where i am only using DMA for Transmit and Not for Receive, I have generated the code through STM32cubeIDE, i have c=external clock at 16mhz and my Baud rate is 4Mhz. i am not using any SPI interrupt. DMA interrupts are by default enabled I am using SPI for writing into FRAM.  My code is misbehaving like sometimes it will write and sometimes not. Sometimes it will read sometimes not. I am not able understand the reason. Basically, it's not working properly

Hi,I am programming the nucleo_wba55cg using Zephyr v3.7.0.My application is based on a BLE peripheral example, whereby I have also configured an LED on the nucleo_wba55cg board to toggles at the rate of 1s.Also, I modified the rcc section the nucleo_wba55cg.dts file to adapt to the higher system clock (96 MHz, similar to that of the nucleo_wba52cg) shown below: &pll1 { div-m = <8>; mul-n = <48>; div-q = <2>; div-r = <2>; clocks = <&clk_hse>; status = "okay"; }; &rcc { clocks = <&pll1>; clock-frequency = <DT_FREQ_M(96)>; ahb-prescaler = <1>; ahb5-prescaler = <4>; apb1-prescaler = <1>; apb2-prescaler = <1>; apb7-prescaler = <1>; };   Expectation: while the BLE application is active, LED blinks at a frequency of 16 MHz (6 times slower so it toggles every 6 seconds as opposed to the 1 sec as configured in the application). Later, I modified the application via SCM (https://wik

The Ethernet reset is not clearing (ETH_DMABMR_SR in DMABMR).I am having a similar issue as others but have not seen a solution in the forum.I am working with the stm3210c-eval board. I know it is no longer available; but it has a version of the processor that I wish to use and Ethernet support.I verified that the Ethernet clocks are enabled in AHBENR:RCC_AHBENR_ETHMACEN, RCC_AHBENR_ETHMACTXEN & RCC_AHBENR_ETHMACTXEN.I verified that the port IO clocks are enabled.The pins ETH_MDC, ETH_TXD2, ETH_TX_CLK, ETH_CRS, ETH_RX_CLK, ETH_MDIO, ETH_COL, ETH_TX_EN, ETH_TXD0, ETH_TXD1, ETH_TXD3, ETH_RX_DV, ETH_RXD0, ETH_RXD1, ETH_RXD2 & ETH_RXD3 pin's modes are set to GPIO_MODE_AF_PP.And pin ETH_RX_ER is set to input, no pull.I verified that there is a 25 mHz clock signal at PA1 & PC3.It is configured for MII mode (MAPR AFIO_MAPR_MII_RMII_SEL = 0).Note that the Ethernet link & activity LEDs are working.Is there anything else I can check?

Hi, Looks like the HAL driver for the STM32f7xx ADC is missing a case for using the software start of the ADC2 peripheral in the HAL_ADC_Start_IT function. Starting from line 1128: else { /* if instance of handle correspond to ADC1 and no external trigger present enable software conversion of regular channels */ if((hadc->Instance == ADC1) && ((hadc->Instance->CR2 & ADC_CR2_EXTEN) == RESET)) { /* Enable the selected ADC software conversion for regular group */ hadc->Instance->CR2 |= (uint32_t)ADC_CR2_SWSTART; } /* if dual mode is selected, ADC3 works independently. */ /* check if the mode selected is not triple */ if( HAL_IS_BIT_CLR(ADC->CCR, ADC_CCR_MULTI_4) ) { /* if instance of handle correspond to ADC3 and no external trigger present enable software conversion of regular channels */ if((hadc->Instance == ADC3) && ((hadc->Instance->CR2 & ADC_CR2_EXTEN) == RESET)) { /* Enable the selected ADC software conver

I was establishing a UART connection between X-STM32MP-GNSS2 board and PC through UART to USB converter. But, I failed to do so. Below is the error message that I could see in device manager:THIS IS NOT PROLIFIC PL2303. PLEASE CONTACT YOUR SUPPLIER. Request to suggest proper driver software/procedure to fix it.

Hi,I have successfully ported the ST25R95 library from STMicroelectronics to my own microcontroller, an nRF52832. I am now trying to read the payload of an NFC-A Passive ISO-DEP device with the UID: 5F471DC2783A8E.In the polling_demo.c file, I see the function demoAPDU. I would like to use this function to read the payload, which contains Bluetooth Out of Band (OOB) data and a key. My goal is to use this for BLE NFC pairing. Can someone assist me with this?Here is the payload:

I am conducting research on robot control, and to handle data obtained from the LSM6DS3H embedded in the robot, I want to understand how acceleration and angular velocity are measured. Specifically, I would like to learn about the internal structure of the accelerometer and gyroscope within the LSM6DS3H. My general understanding is that the structure consists of a mass connected to other parts by springs, and acceleration and angular velocity are measured based on voltage changes due to the compression and extension of these springs. The specific information I am looking for includes the following:Diagrams illustrating the connection between the springs and the massSpring constant and damping coefficientMass of the weightNatural frequency and damping ratio of the spring-mass systemFormulas used to calculate acceleration and angular velocity.Any information on these points would be greatly appreciated.