Solved

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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I use ASM330LHH as Linux IIO.Source and DTS were added.We found that /sys/bus/iio also added a device.I also checked reading data in direct mode from sysfs.Therefore, I think there is no problem with the H/W connection.​I want to use Trigger mode to read multiple data, but I don't see trigger and buffer in Directory.I tried the # echo 0> /sys/devices/iio_sysfs_trigger/add_trigger command, but I still don't see trigger.​​Kconfig settings are as below.config_IIO=YCONFIG_IIO_BUFFER=YCONFIG_IIO_KFIO_BUF=YCONFIG_IIO_TRIGGERED_BUFFER=YCONFIG_IIO_TRIGGER=Y CONFIG_IIO_ST_ASM330LHH=YCONFIG_IIO_ST_ASM330LHH_I2C=YCONFIG_IIO_ST_ASM330LHH_SPI=YCONFIG_IIO_ST_ASM330LHH_MAY_WAKEUP=YCONFIG_IIO_ST_ASM330LHH_EN_TEMPERATURE_FIFO=Y​​Is there a way to use triggered buffer mode?​Kernel version is 4.9.11.​

Hello,I am using an stm32mp157c-dk2 and browsed the stm32mp1 workshop MOOC : https://www.st.com/content/st_com/en/support/learning/stm32-education/stm32-moocs/STM32MP1_workshop.htmlI tried launching the pre-configured VM given here : https://drive.google.com/drive/folders/1eHO37VljVpbTt-TBJFZ2-Yack5fZPj-vBut the updated archive files (OpenSTLinux-1.2, 2.0, etc.) are corrupted.This may be due to their extension (.7z.003 instead of .7z).Any way to fix this?Thanks.

I am using the STM32F303CB controller.System Clock - 72MHz APB1ENR - 72MHz for TimerI followed the below steps as per the reference manual.Timer2 Initialization: RCC->APB1ENR|= RCC_APB1ENR_TIM2EN;   TIM2->ARR = 72000-1;   TIM2->CCR1= 4000;   TIM2->PSC = 1000-1;   TIM2->DIER = TIM_DIER_CC1IE;   TIM2->CCMR1 = TIM_CCMR1_OC1M_0|TIM_CCMR1_OC1M_1;   TIM2->CCMR1 &= ~(TIM_CCMR1_OC1PE);   TIM2->CCER |= TIM_CCER_CC1E;   TIM2->CR1 |= TIM_CR1_CEN;   while (!(TIM2->SR & (1<<0)));   NVIC_EnableIRQ(TIM2_IRQn);I have initialized the timer for 1 sec.My application wants the output compare feature for a timer period.For Example: When the counter matches with CCR1(4000) interrupt should raise and CCR1 is updated with new value CCR1(15000) vice versa.Did I made any mistake or need to do more steps.Please guide me.

I am using the SensorTile.box that I just received today. I am using the ST BLE Sensor app Version 4.10.0 on my Pixel 4a downloaded from the Google Play Store. I get the same error on my Pixel 1. The blue LED flashes when the attempt to load is being made. It tries for 10 s before the error window appears.

Hi,There is a problem with TouchGFX 4.16.1 vertical front line in dynamic graph by using STM32H7...When graph is initialized for first time, vertical front line have a shadow of it's last position until end of the graph and when it start from beginning, shadows are cleared by front line forward moving... When also changing screen and back to graph screen, shadows come back again....Please help me what is wrong here and how can I solve this...Thanks.

I'm using a Timer (TIM8) in a capture compare application for measuring timing between signals. In some cases I don't need the value so I have been skipping the read of the CCRx register. I'm using a HAL command as the code below shows:The HAL_TIM_ReadCapturedValue() simply reads the CCRx register.I'm counting on the Timer to continue running and the next IRQ will capture a timer value that would be the same whether or not the previous IRQ occurred. Is this a valid assumption?I realize the overflow flag will likely be set when I skip a read of the CCRx register but does this have any unforeseen consequences? if( htim->Instance == TIM8) { if (htim->Channel == HAL_TIM_ACTIVE_CHANNEL_1) { // toggle ref for viewing in ST GUI g_nFrefSignal = !g_nFrefSignal ;   // received REF edge which is 'PU', update state machine, switch (p_mPFD->State) { case COAST: p_mPFD->State = ACCEL; buffer1[0] = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_1) ;

I'm using a Nucleo-F746ZG with timer 2 as a quadrature encoder input. I'm feeding it quadrature signals from 2 GPIOs at 250Hz (each phase is 1mS).The CDR value is 0, so FDTS should be CLK_INT (36MHz for APB1). With both inputs' filter set to 8, the quadrature counter works flawlessly, counting from 0 to 10,000 and back to 0 for 60+ hours. A filter setting of 10 also works flawlessly. On my ancient 20Mhz scope the GPIO signals are very clean with a low drive setting. Setting the filter to 9 produces random, spurious counts. I'm not sure why this notch should exist. My calculations are that a filter of 8 takes 1.33uS to match, 9 is 1.78uS, and 10 should take 2.22uS. If 8 < 9 < 10 how does 8 and 10 work and 9 does not? Shouldn't a filter setting of 9 also have a 1000x chances to match the input (2mS / 1.78uS). I also see the filters >=12 start to prevent accurate counts. Again, these seem very fast compared to a 250Hz input signal and it seems they should all match OK. Thanks!!

TL;DR version:Is there a way to set/check the microcontroller software embedded pack you're using (ie stm32wb55 V1.11.1)?I was working on trying to get a Stop2 Low Power mode working and was running into some issues so I checked the forum. I came across as post by @Scott L�hr​ that it was easy as of version 1.8. Below is the thread it discussed this (if you're interested):He had mentioned it could be done in 4 lines:LL_PWR_SetPowerMode(LL_PWR_MODE_STOP2); LL_LPM_EnableDeepSleep(); __WFI(); sysClkCfg();I tried the code but it didn't recognize the EnableDeepSleep command. I started looking through the *.h files and, sure enough, it wasn't there. I have several different package versions so I created a new project from scratch to see if it was there and it wasn't there in a recent one either. So, the question I eventually came down to was, how do I know what version I'm actually running? Can I switch between versions? I currently don't even know what framework my projects are running

In the datasheet, it gives a formula, R = (Vi(min)-Vxx -Vdrop(max)) / (IO(max)+Id(max))My IO is 0.1A, My output voltage is 5V. My input is currently 24V. I saw some discussion that I think I should consider the Vdrop to be 7V. Is Vxx the voltage I want after my resistor? Min input should be 7.5, but I was thinking 10-12V. I don't know what Id is.See Pae 27 of linkhttps://www.st.com/content/ccc/resource/technical/document/datasheet/41/4f/b3/b0/12/d4/47/88/CD00000444.pdf/files/CD00000444.pdf/jcr:content/translations/en.CD00000444.pdf

Can we connect SENSEA/SENSEB pins to microcontroller ADC inputs to monitor the current in real time?

I saw below topics.How can i see discussion 71915817?***The datasheet doesn't specify how to convert register (OUT_TEMP_L (0Ch), OUT_TEMP_H (0Dh) ) data to actual temperature. let's say for example if reg 0x0c = 0x7 value and reg 0x0d = 0x00 value, then what will be the temperature.https://community.st.com/s/question/0D50X00009XkeF4SAJ/lis2dh-raw-output-to-temperature-conversion***

Hi, I've got FreeRTOS and LwIP running on an STM32F746. The application has a TCP socket listening for incoming connections. Incoming connections are coming from multiple sources and unfortunately I'm seeing some of the connections get an ECONNRESET error. I've tried turning up the number of TCP connections but this only seems to make the time between these ECONNRESETs greater and does not get rid of them completely. I'm wondering what other LwIP parameters I can tweak to help resolve this?I was able to track down why the ECONNRESETs are happening. I've traced it to the "tcp_abandon" function getting called. The documentation indicates this function "Abandons a connection and optionally sends a RST to the remote host. Delete the local protocol control block. This is done when a connection is killed because of shortage of memory." I've tried tweaking the memory settings for LwIP but to no avail. Can anyone suggest settings to help with this?Thanks,Doug Burrell

Hello Community,I am using STM32H745 controller in one of my project.I am trying to send data from M4 core to M7 core using SRAM. To test the same I am increment a variable and writing to 0x10040004 location from M4 and reading the same location (also 30040004) in M7 at every 1 minute. However the variable do not reflect every time in M7.Below are the M7 logs from for the reference.1 Minute timer timeout devCount: 88 [0x10040004] tDevCount: 87 [0x30040004]1 Minute timer timeoutdevCount: 88 [0x10040004] tDevCount: 87 [0x30040004]1 Minute timer timeoutdevCount: 90 [0x10040004] tDevCount: 89 [0x30040004]Please let me know, If I need to configure anything for shared memory.Thanks and RegardsFYI:We have also tried below solution but still got failure :sad_but_relieved_face: https://community.st.com/s/question/0D50X0000BVpPAqSQN/besteasiest-way-to-share-data-between-cores-in-stm32h745

I am using a ST25DV64K.I am trying to exchange data between the MCU on the board and Mobile Phone using I2C/RF and FTM.The RAM capacity of the MCU on the board is small, and I am trying to divide the RF Message and read it.For example, I am trying to send 100 bytes by RF Message, and MCU is trying to read by dividing this 100 bytes by 50 bytes + 50 bytes.First 50bytes: 2008h - 2039h2nd 50byte: 203Ah - 206BhAt this time, assuming that all I2C read msgs are received normally, will MB_CTRL_DYN becomes "81h"?Or MB_CTRL_DYN becomes "91h" because it don't read at once?BRMorooka

If Hang up I2C interface of the LIS2DH, How can i reset the device except VDD OFF/ON operation?I am considering to send 9-clocks to the SCL of the LIS2DH.