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I've just converted my project to C++ with STM32CubeIDE and now it gives me an error about a "undefined reference to `_gettimeofday'" in libc_nano.aHow do I fix this issue?

Hi,     I'm using ST25r3911 for my project and have to work on DESFire card. I know there is code support for ISO/IEC 14443 cards on ​STSW-ST25R002. We can use DESFire as T4T for read and write. Is there any example of how to perform read/write?Also is there any support for Authentication on STSW SDK?

Hi,i am using a STM32L010K8 Controller with Atollic TrueStudio and ST-Link V2. When the Controller enters the sleep mode (stop mode), the connection to St-Link V2 with the target lost.Is there a possibility to stay in debug mode during the controller is in sleep mode?​

I am trying to work with photo diodes and need to measure 20mV or less with ADC. Whats the best resolution I can get with a single ended ADC (using ADC 3 channel 12 at the moment).Whats the measurement range on that channel? When we have less than 10mv, Is the ADC likely to give out a 0 value ?

board: NucleoG071RBAn error happens when I compile codes. There is no error like this when I compile codes in STM32L053Building file: ../Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_cortex.cInvoking: MCU GCC Compiler/Users/username/Documents/stm32cubemx/test/Debugarm-none-eabi-gcc -mthumb -mfloat-abi=soft '-D__weak=__attribute__((weak))' '-D__packed="__attribute__((__packed__))"' -DUSE_HAL_DRIVER -DSTM32G071xx -I"/Users/username/Documents/stm32cubemx/test/Inc" -I"/Users/username/Documents/stm32cubemx/test/Drivers/STM32G0xx_HAL_Driver/Inc" -I"/Users/username/Documents/stm32cubemx/test/Drivers/STM32G0xx_HAL_Driver/Inc/Legacy" -I"/Users/username/Documents/stm32cubemx/test/Drivers/CMSIS/Device/ST/STM32G0xx/Include" -I"/Users/username/Documents/stm32cubemx/test/Drivers/CMSIS/Include" -Og -g3 -Wall -fmessage-length=0 -ffunction-sections -c -fmessage-length=0 -MMD -MP -MF"Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_cortex.d" -MT"Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_cortex.

https://community.st.com/s/question/0D50X00009XkgpsSAB/fatfs-sdio-dma-write-speedI'm trying to write WAV files to SD card on my STM32F7 Discovery board and I've finally gotten round to setting up a DMA + FATFS + SDMMC. My sampling rate is around 1Msps on the 12 bit ADC and I want to know if I'll be able to achieve this with the STM32 and a standard Class 10 SD Card. My issue is I can't seem to understand how people benchmark the read and write speeds. Is there a code template somewhere? I've searched on the forums and I came across this but I can't seem to understand while f_sync is being used and why so many while loops at the end. Any help is appreciated.

I am looking into the possibility of using a stm32 microcontroller (probably stm32f030) to directly* control the power transistors in a switch-mode power supply, in order to generate a high-power waveform.My current thinking has a PMOS switch transistor and an NMOS synchronous rectifier. These have different turn-off times (one of them is 290 ns according to its data sheet), so I would want one dead-time when turning the PMOS off and the NMOS on, and a different dead-time when turning the NMOS off and the PMOS on.Looking at the Reference Manual, I see only one register to program the dead-time on TIM1.Does anyone have suggestions as to how I might achieve different dead-times for otherwise-complementary PWM? If a different stm32 would do the job better, please suggest which.I should add that in order to keep the inductor size reasonable, I do want to switch as fast as I can, so I don't want to bit-bang the outputs.Thanks,Danish*Probably via a FAN3268 MOSFET driver or similar

Greetings Everybody,I am initializing STM32F030R8 Timer 3 with 48MHz clock and pre scaller 480 - 1 -> 479 and counter period 1. Technically this timer 3 interrupt should be generated at 48MHz / 480 -> 100KHz. On every interrupt i am toggling PA4 GPIO which i am viewing in Oscilloscope and it shows the frequency of 25KHz .. Shouldn't i be getting 100KHz output ? I cant figure out where i am going wrong ?Any help would be of great help.I am using STMCube and HAL libraries..Below is snapshot of timer 3 init

I'm using "STM32L452CC". PA11 pin in connected to battery level checking part. But I can check only ADC1_EXTI11, and I'm using ADC1_IN5,6,7,8,9(PA0,1,2,3,4 pins) DMA_cirgular.So, for battery level checking, I wanna use "GPIO_Analog". But i cannot search any example or any function in stm32l4xx_hal_gpio.c, stm32l4xx_hal_adc.c or in hal library. How can I get the value of gpio_analog pin?

With reference to Page 21, Table 16 in the ST25R95 Data Sheet, where would I find a description of all of the Data Field parameters for 15693 tags? (I see only one example in which the data value of is 022000 given).Thanks,Jim

Hi, I'm trying to change the button bitmap from "button_pressed.png" to "button.png", after an interrupt event (without touching the display) . Could anyone shed some light on where I can swap the graphics? I'm a CPP novice, so the more information you can provide the better. many thanks, K

Hello,I now understand that I should have asked the question differently.Let's say we have 2 applications: secured and non-secured application.The secured is placed in inetrnal flash, just as done in the demo of SBSFU,But the non secured should be placed in external flash.And we don't need it to be encrypted.Is it that the root bootloader os SB will try to decrypt or authenticate it before jumping to that non secured application in external flash ?The bootloader should decide if jumping to the secured or non-secured according to GPIO (by the way, is it secured ?)Thanksranran

I've been fighting with this too long and can't figure it out. I've added uart communication for use with printf() by implementing the following in syscalls.c:__attribute__((weak)) int _write(int file, char *ptr, int len) { HAL_StatusTypeDef status = HAL_UART_Transmit(&huart1, (uint8_t *)ptr, len, 0xFFFF); return (status == HAL_OK ? len : 0); }That works fine with printf. But printing floats or doubles causes it to hang when it tries to output the number. I have enabled -u _printf_float in the MCU Settings of STM32CubeIDE (also tried adding it manually to the Linker flags).double test = 1.2345; printf("test: %f\r\n", test);arm-none-eabi-g++ -o "ProjectTest.elf" @"objects.list" -l:libtouchgfx-float-abi-hard.a -mcpu=cortex-m7 -T"B:\gitrepo\ProjectTest\STM32F746NGHX_FLASH.ld" --specs=nosys.specs -Wl,-Map="ProjectTest.map" -Wl,--gc-sections -static -L../Middlewares/ST/TouchGFX/touchgfx/lib/core/cortex_m7/gcc --specs=nano.specs -mfpu=fpv5-sp-d16 -mfloat-abi=hard -mthumb -u _printf_flo

This is probably more of a wish list item than a question that can be solved - I'm using an STM32L4 chip's SAI to interface to an I2s microphone (SPH0645lm4h Knowles microphone). It works well. But things would be even better if the I2s reception could be somehow synchronised to an LSE derived clock. eg. 32768Hz/2 = 16384Hz. That way I would be able to get the full accuracy of the LSE crystal for pitch analysis. Maybe there is a way but I haven't figured it out yet....By the way, there seems to be a few errors in the SAI section of the Reference manual eg. in the register section, I think Fsck_x = Fsai_x_ker_ck / MCKDIV x 2 should be Fmclk = ....

Hi, I am using stm32f103c8t6 connected to a rotary encoder using SPL. I was planning to use TIMER 1 in encoder mode, but probably I had made a mistake by connecting channel A of encoder to PB13 (T1C1N) and channel B to PB14(T1C2N) - this setup doesnt work at all.So, is it possible that TIM1 can decode encoder signals in this configuration or the only solution is to re-route the encoder signals to PA8 & PA9 pins of the µC? I also tried using STM32Cube just to cross check my assumption and there also it seems that I can't use PB13 & PB14 in encoder interface mode. I have checked the encoder signals with a scope and they look clean and sharp and the same encoder works well with TIM2 and TIM4.Kindly help with suggestions and solutionsRegardsVin

Hi,i'm trying to blink only one led. I have a problem with one of four leds. Because as you in my code, i'm trying to blink only 'green led'. But 'blue led' blinks also. #include "stm32f4xx.h" // Device header #include "stm32f4xx_hal_gpio.h"   int main () { RCC->AHB1ENR |= (4<<1); //initiliazing clock GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP; //push-pull GPIO_InitStructure.Pin = GPIO_PIN_12; //green led HAL_GPIO_Init(GPIOD, &GPIO_InitStructure); HAL_GPIO_TogglePin(GPIOD, GPIO_PIN_12); //blue led blinks also! return 0; }

1 Select STM32MP151 (This case AAAx)2. Select an GPIOx and set to GIPIO_EXTx 3. Goto NVIC: EXTI option is disabled   (Checkbox cannot be selected)4. Goto GPIO : Pin can be configured as interrupt How to enable interrupts for NVIC for GPIO's in order to generate the code ? See pictures. CubeMX 5.3.0, Linux

Hi all,For debugging purposes I would like to add hardware button presses to the simulator view in order to be able to better mimic the hardware that we run on (keypresses are working on the hardware already). I've edited the makefile used to build the simulator to include my added code, and I followed the same procedure of creating a KeySampler class that is of the type touchgfx::ButtonController and added the    static_cast<HALSDL2&>(hal).setButtonController(&btn);To main.cpp. Right now for simplicity's sake the sample function of the class always returns "true" with the button press value hard coded to match one that should produce a reaction on the screen. Despite this the simulator GUI does not respond to the "button press". Using the touchgfx_printf() shows that the initialization for the KeySampler is being called, but that the sample function is not. Am I taking the wrong approach? Does this work differently in the simulator HAL than the hardware HA

I found that STM32Cubemx version 5.3.0 fails to configure ADC DMA operations when building code for the STM32H743.The initialization code set the ConversionDataManagement to the wrong value: hadc1.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DR;instead of: hadc1.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DMA_CIRCULAR;

I want to use sound alarm in my M4 program or on A7 Linux side.It can be any kind of sound (beep...etc).What should I do ?Which external pheriperal can I buy , or is it possible to do it with internal pheriperals on the board and how ?tnx

Hello all,I am using the STM32L071KB in a project, and I have to write a 32 bit word in internal EEPROM each minute; So is it worth changing the address of this 32 bit word after 100 000 cycles, in order to increase number of Erase/Write cycles ?If the MCU erases the whole EEPROM at each Erase/Write cycle, that would not be worth. But I don't see this information in the user manual.Thanks !

Hi All,I would like to use the OTP memory in my current project, but I can not find any app notes or user manuals on how to program it. Is it supported by STM32 Cube Programmer CLI? There is no reference to it for the STM32WB OTP in UM2237.Thanks,Daniel

Hi,I ran several test and example projects on the STM32F769 Discovery platform. I would like to reload the original demo firmware. According to the documentation, it should be available from the www.st.com/stm32f7-discovery webpage but I cannot find it again.Could someone tell where I can find the original demo firmware for this kit ?Many thanks in advance.Best regards.

Posted on February 23, 2018 at 01:56Still very fresh with CubeMX and all this STM32 stuff, hope it is my fault. Or not?In the Clock configuration tab in Cube 4.23 I've produced configuration that should set the HCLK and SYSCLK to 72 MHz(not sure how it calculated this config, I have external osc. 8 MHz and must have 48 MHz for USB). The chip is STM32F446. See the picture below.But, in the generated code in main.c after SystemClock_Config()  SystemCoreClock value is 225,000,000.If I understand correctly SystemCoreClock should be exactly the HCLK (or Sysclk?)I know that the actual frequency is 72 MHz because I use debug output via ITM_SendChar, and entered 72Mhz in Keil debug settings. It prints   Today I upgraded this project to Cube v. 4.24 and libraries 1.19.0 and the  SystemCoreClock value still is 225,000,000.This may be related to https://community.st.com/0D50X00009Xkav1SAB.Please advice...Regards,-- pa#cubemx-4.23 #stm32f446 #cubemx-v4.24

Hi,Can the STM32H7 be programmed with STLINK v2 ? ie, can it be connected to the SWD 6 pin header on the (eg: STM32F407) Discovery board, to be programmed ? Thanks,Manu