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The same board was created based on the stm32f469i_Discovery board. The stm32f469i_Discovery board operates st-link/v2 using the stm32f103.Please let me know if you know which program to put in the stm32f103 and how to put it in order to operate the st-link/v2.

I have a project with LIS2DH accelerometer and I want to measure values each 20 seconds, turning LIS2DH off between measurements.So, I tried to turn power on, wait 5ms, write 0x10 to CTRL_REG3 (turn on DRDY on INT1), then 0x1F to CTRL_REG1.Then I wait for pulse in INT1 (and getting it almost immediately) and read data from OUT_X_L to OUT_Z_H. But - all data is zeroes. Writing registers in different direction, i.e. from REG1 to REG6 gives same result.Datasheet for LIS2DH gives no information about how DRDY works (and, for example, which is minimum time allowed between two SPI reads/writes, but I read in datasheet for LIS2DH12 (newer accelerometer), that "In order to be sure to have the first DRDY rising edge synchronous with the selected ODR (avoid condition in Figure 2: "DRDY signal synchronization") set the I1_ ZYXDA bit to ‘1’ before enabling the ODR."No luck.Can you give me an advice how to read valid data from LIS2DH in a minimum time from powering it up?Thank you in advance!

I am looking for STM32F072RB part no but currently it is out of stock and not available anywhere. Can somebody provide alternative part no which is available easily.Please share the source details .Any help would be helpful. Thank you. 

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Hi all,I'm currently working on a STM32H743. The idea is to use a SAI peripherals to read an Audio stream:The SAI is set to be a Master receive with a circular buffer and a DMAThe issue is that as soon as the HAL_SAI_Receive_DMA is called, then the code enters into the error callback HAL_SAI_ErrorCallback with an error of type HAL_SAI_ERROR_DMA, HAL_DMA_ERROR_TE.The SAI clock is set at 4 MHzI tried the HAL_SAI_Receive without DMA and all works fine.So for sure i'm doing something wrong with the DMA configuration . static uint8_t buf_rx[2] = { 0, 0 };   int main(void) { HAL_Init();   SystemClock_Config();   PeriphCommonClock_Config();   MX_GPIO_Init(); MX_DMA_Init(); MX_SAI2_Init();   HAL_SAI_Receive_DMA(&hsai_BlockA2, buf_rx, 2);   while (1) { HAL_Delay(1); } }static void MX_SAI2_Init(void) { /* USER CODE BEGIN SAI2_Init 0 */   /* USER CODE END SAI2_Init 0 */   /* USER CODE BEGIN SAI2_Init 1 */   /* USER CODE END SAI2_Init

I need to take 10 samples (10 Hz) per second. How can I set ADC configurations on CubeMX. I use the lowest sampling time (2.5 cycles), but the values I convert and use in ADC change very quickly.Thanks for helps.

Hi. The only example of software that drives the ST25R3911B's capacitive sensor function I've found is the Discovery GUI. But there's evidently no source code available for the GUI. Is there any available code demonstrating the capacitive sensor Wake-up, configuration and/or use? I want to vary the capacitance measurement gain and have no idea how to begin.

I was working with the two ANT-1-6-ST25DV boards. But I could not find the schematics of these boards. Does any one have it??

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Hello,I'm trying to use the VL53L1X on my nRF52DK, but I experience some problems.Previously, I've successfully used the VL53L1X with an Arduino UNO using the pololu Arduino library (link below). For my project I need to use this sensor on the nRF52, so I've rewritten the vl53l1_platform.cpp and main .ino code to C (the other files are from ST's VL53L1 API, which are already in C).When the sensor is not connected, the nRF52 is writing the correct data to the SCL and SDA lines, but if I connect the sensor, these lines give incorrect data. Instead of sending to address 0x29, it sends to address 0x7F or 0x00. And instead of sending the data 0x01 and 0x0F, it sends 0xFF and 0xFF (or 0x00 and 0x00).I have correctly connected and initialized the INT and XSHUT lines.I'm not sure what the problem can be, because it worked with the Arduino UNO, but not with the nRF52 (even though the I2C is working correctly without the sensor).My setup:nrf52DKVL53L1X Time of Flight sensorLogic analyser to read

https://www.st.com/en/microcontrollers-microprocessors/stm32f7x5.htmlTop of page talks about I/D cache being 4K+4Kon sub pages becomes 16K + 16K for 32K total https://www.st.com/en/microcontrollers-microprocessors/stm32f765vi.html 

I apologize in advance as the question is really a basic and obvious one ... My custom board is using an STM32MP151 SoC.Is it possible to re-write programmed OTP bits (namely, OTP Word 3 for boot modes).My feeling is that, this is not possible (One Time Programming). A complementary question: I try to do a soft selection of the boot source (instead of dealing with hardware pins), so I thought about fusing the OTP word so that it'd start from SPI NAND by default, then force the Serial boot using the TAMP backup register 20 if needed.Does it makes sense ?Thanks,Jacques

Hi everyone!Quick question: this is my platform.STM32F4 main controllerexternal QSPI flashI'm currently using FreeRTOS with TouchGFX so the external flash stores the graphical resources. In case I run out of memory, could I run some of the code (the "excess" code) in external memory by modifying the linker file appropriately? Obviously I'll have performance issues because I would have to fetch code from the QSPI, but would it be feasible in a theoretical way at least?Many thanks to all! :)

I am using a custom board with STM32F4 micro and I want to use the Cube libraries. I need a simple example of application of a USB Device configured as Custom HID. I need to know not only how to configure the USB, but also how to transmit data to the PC. On the PC I have a working custom driver software. I really don't know where to start.... Thank you very much.

I just received (about 4 hours ago) 2 Nucleo-F042K6 boards. I tried to a LED blinker program but both units hang in the Clock Configuration routine. Strange that both units exhibit the same behavior. I'm wondering if I missed something. I used CubeMX to for the default configuration (but I noticed the LED is missing - I had to added it to PB3 per the documentation) . Updated the St-link and launched the debugger with CubeIDE and with uVison. Both hang in same place. Tried to program with CubeProgrammer but 't the Led doesn't blink. One think I noticed when I was first started is that the flash erase function was 'greyed' out in uVison. I'm assuming both are units are bad and will try return them unless I've missed something trivial.

these are the functions__asm void my_strcpy(const char *src, char *dst){loop   LDRB r2, [r0] ; Load byte into r2 from memory pointed to by r0 (src pointer) ADDS r0, #1 ; Increment src pointer   STRB r2, [r1] ; Store byte in r2 into memory pointed to by (dst pointer) ADDS r1, #1 ; Increment dst pointer   CMP  r2, #0 ; Was the byte 0?   BNE  loop ; If not, repeat the loop   BX  lr ; Else return from subroutine}__asm void my_capitalize(char *str){cap_loop   LDRB r1, [r0] ; Load byte into r1 from memory pointed to by r0 (str pointer) CMP r1, #'a'-1 ; compare it with the character before 'a' BLS cap_skip ; If byte is lower or same, then skip this byte CMP r1, #'z' ; Compare it with the 'z' character BHI cap_skip ; If it is higher, then skip this byte SUBS r1,#32 ; Else subtract out difference to capitalize it   STRB&

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see https://www.st.com/resource/en/application_note/cd00264321-can-protocol-used-in-the-stm32-bootloader-stmicroelectronics.pdfI'm looking for ways to use CAN bus for firmware upgrades in F1 and F3 family and F3 seems specifically omitted in the application note. Is it just a documentation bug or doesn't the bootloader support CAN?

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I try to read tags with the configurations:Coding = FM0BLF = 640hzTari = 6,25usAnd I didn't get sucess. But when I try to read tags with the same configuration with EVAL Board I did get sucess. I don't know what is diferent, because I use the SDK 2.3.0 and I modificatied just this configurations parameters.Can you help me?

I need at least 10 IC's for a field test and its impossible to get any right now it seems. I'm trying to remember if there were samples in the ST25R3916-DISCO package? Can someone confirm if sample IC's are included?

Hello, when testing the SDcard on SDIO 1-bit interface , we see a big problem here:when card in slot, cpu stall in MX_SDMMC2_SD_Init() , on debug can see: card info sector count, block size etc. read seem ok, but then waiting for response -- forever. (timeout -1)SDclk set to 200/(4*2) MHz, 1-bit mode; tried different things: cache on/off, clk faster/slow, extra cap close to card holder, different cards, core volt.scale 0/1; now i am out of ideas, why it is not working. looked also H7A3 errata, but there i see no problem with SD .Stall/wait is here, in init :  while (!__HAL_SD_GET_FLAG(hsd, SDMMC_FLAG_RXOVERR | SDMMC_FLAG_DCRCFAIL | SDMMC_FLAG_DTIMEOUT | SDMMC_FLAG_DATAEND))so: what is wrong? do i something wrong? or is something missing?

Q1. How to calculate IGBT gate resistance.I want to use STGD18N40LZ IGBT for operating an inductive switching load. Switching freq:- Between 400Hz to 1KhzCollector to Emitter voltage:- 24V.Avg Max current :- 5A.Q2. What will be impact If I use 1Kohm resistance?

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