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I have tested Power On Reset / Power Down Reset (POR/PDR) voltage threshold on two STM32G070RBT6 sourced by different suppliers. The threshold isn't matching the specified voltage 2.06<VPOR<2.14 and 1.96<VPDR<2.04 but it fits values stated in STM32G081 datasheet, 1.62<VPOR<1.70 and 1.60<VPDR<1.69. The brownout reset feature is functional on both STM32G070 and STM32G081 but it's not available on STM32G070 according to spec. I looks like STM32G070 uses the same silicon as STM32G081. Thus I'm concerning what to expect from different batches of STM32G070, can we relly on spec or rather consider STM32G070 to be equal with STM32G081.

My aplication is cpu to coffee machine professional...

Hello, i designed a PCB with footprint for st25dv04k and antenna, I connected the 2 antenna port to the IC chip.The antenna is 10mm X 50mm, 6 loops, a width of 0.15mm and 0.15mm pitch.The antenna inductance L is 2.5uH according to tag capacitance.I soldered the tag, fairly but it seems that I couldn't detect it with any rfid/nfc reader.I attached the PCB picture, can you help detect what is the problem?

Dear,on STM32L083 I use internal eeprom. I found out, that when I use functionHAL_FLASHEx_DATAEEPROM_Programand during execution of this function the power voltage of mcu falls down (uplugged battery from device) - then in eeprom are saved wrong data (probably only in sectors which I wanted to modify by calling the function above).I use BOR Level1. Also I tried to activate PVD and in its IRQ callbacks I just added while(1); until the mcu goes to reset.Is there any solution for that? Thank you very much, Jan.

To reduce latency time of interruptions.Based on the same thing but in stm32f0 devices

currently using stm32f105 (HSI+PLL) ,and i am trying to clock faster than 36MhzThey are from the same stm32 familly, why is the PLL of the stm32f105 limited I am using CubeMX 6.4.0

I've downloaded STM32Cube_FW_L4_V1.17.0.However in this package, there is no project code for B-L462E-CELL1, of which the MCU is an STM32L462REY6TR microcontroller. Particularly I am looking for sample code for USART communications.

Hi, I am working on STM32f413zh and I am referring https://www.mikrocontroller.net/articles/STM32_BLDC_Control_with_HALL_SensorIn my code shows TIM_SelectOutputTrigger() not defined. There is no definition for some timer related functions.Please give me the guidance.Thankyou

I'm running the latest (less than one week old) macOS Monterey developer beta 12.4 (build 21F5063e) on a MacBook Pro 10,1 and downloaded the file en.st-stm32cubeide_1.9.0_12015_20220302_0855_x86_64.dmg_v1.9.0.zip, decompressed and installed the app. But attempting to start the app causes a hiccup in the macOS first-time verification of the app and produces the following error:Notes:Anti-virus software can corrupt downloads. I disabled Avast file and web checking.I tried this download multiple times; same result.Other tools, e.g., MX and Programmer, downloaded, installed and run OK.Has anyone else seen this? Recommendations?TIA,Mike

Hello, there is posibility we mixed STM8L101F3 vs F3U. There is marking L1S3 on the top, but I can't find any information/table of these markings. Is is possible to have it ?

We have a custom board with and STM32MP153CAA processor and are trying to get it to boot from an SMCC card on SDMMC2 interface. If I loaded the tf and fip files via a UART I am able to get u-boot running and then use the "run bootcmd_mmc0" to boot the linux kernel from the SDMMC2 car from there. So I know that the electrical connection to the SD card is correct. However we'd like to have the whole boot process read from the card at power up.I have an SD card laid out with the partition scheme used to boot the discovery boards from SDMMC1 and have written the boot loaders to the card. I have tried setting the OTP word 3 to 0x10 which from ST's documentation I would believe should set up the boot from the SDMMC2 card and have set the boot pins to 101 binary which should tell the processor that the primary boot should be from SDMMC card, but if will not boot. I get nothing at all output to UART-4 which I have set up as console nor any indication that the board is trying to read from

Hi,I am using the the SecureBoot on a STM32L4 with the KMS, I have some questions related to the protections:As I use the KMS, I read in the UM2262: "With KMS middleware integration, SBSFU keys are no more stored in a section under PCROP protection but inside the KMS code running in the secure enclave". So what is the effect of activating the SFU_PCROP_PROTECT_ENABLE in app_sfu.h ?If I don't activate SFU_FWALL_PROTECT_ENABLE, can a malicious user application read the keys from the KMS code running in the secure enclave? If yes, does activating the firewall protection make the secrets from the KMS code running in the secure enclave un-readable by the User App ?I read in UM2262 that using RDP L1 is not recommended because WRP can be reprogrammed. So if I understood correctly, a malicious attacker with physical access to the hardware could disable WRP and use a malicious User App to overwrite the keys in the flash. However how could that malicious app be installed as it won't be signed wi

Hi,We want to design an antenna for the ST25DV64K NFC chip. According to the characteristics that the chip has, it needs an antenna with an inductance of 4,83 uH. Our question is if we can design an antenna with higher inductance and add a series capacitor to the chip to compensate. For example: if we create a 12.69 uH antenna, the capacitance of the chip should be 10.85 pF (ST25DV64K chip internal capacitance is 28,5 pF). Can we add a 17.52 pF series capacitor to the chip to achieve the desired capacitance? Or is it only possible to add capacitors in parallel? Thank you for the help.Best regards,IF

Hi all,I have been trying to build a custom machine based on STM32MP157C MPU. Right now I am facing a weird issue.Defconfig file is attached. However upon giving build , i cannot see the stm32-crc module , built added and loaded. Is there something which i am missing? TIA

Dear ST   As a follow up to my previous question (https://community.st.com/s/question/0D53W00001Tgf47SAB/high-power-consumption-in-low-power-examples:(   I'm using a custom board based on the STM32WB55CE6U MCU, design using the various application notes and Nucleo-WB datasheet/user manual. The board does work, as I'm able to run my core BLE application with ADC/DMA and other functionality.   I've now started to implement Low Power (FreeRTOS tickless idle) using STOP2 mode. The current consumption has dropped significantly (from 10mA --> 630uA during idle), but that is nowhere near the 3-6uA the BLE_HeartRate_FreeRTOS example uses on the Nucleo development board.   Digging in to the issue I've played around with the simple PWR_STOP2_RTC example, which uses ~3uA on the Nucleo. Running the same (basically) software on my board, the consumption is never below ~80uA. I've literally soldered off all components but the basics - see pictures.   Are there some custom

Using an stm32f105RBt6 : i have a working project with canbus and USBdevice.i have another working project with canbus and FAtFS(SPI-sd card)None of them work once i include FATfs+USBCDCdevicei dont know what to make up from this, last time i had a similar error i had messed up my include logic.stm32f105RBt6 custom board.SD Card trough SPI2, sandisk ultra 16GB.CubeMx version 6.4.0, STM32Cube_FW_F1_V1.8.4 package which uses FatFs version R0.10c, Nov 09, 2014.CubeIDE Version: 1.8.0

Hi I want to ask that In SBSFU example for STM32G474 in user app application Firmware update is done using ymodem protocol i.e. UART can we used SPI protocol instead of this is this possible to use SPI or there is any limitation????? Please suggest

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If changed char length 450 to 140 now every thing will be fine. but when i put char length 450 or more than 140. It will return 0x48 error value.The paramerters i was passed, these are ret = aci_gatt_add_char(chatServHandle, UUID_TYPE_128, (Char_UUID_t *)&uuid, /*(char length)/* 450, CHAR_PROP_READ, ATTR_PERMISSION_NONE, GATT_DONT_NOTIFY_EVENTS,       /* encription key*/ 0, 1, &TestRXTXcharHandle);

Greetings,I've been using M24LR64E-R and CR95HF card on Windows for some time. Using the demo card, I'm able to achieve consistent interrupts but on my Android app the tag seems to miss the interrupts while the writing is happening. No particular difference in the algorithm I'm following. The only considerable difference is; CR95HF.dll has a function called CR95HFDll_select where Android doesn't offer a protocol selection as such.How can I achieve the selection that CR95HFDll_select adds on Android? Or is there something I'm missing from the datasheets that'd help me adjust my Android app better so that I can generate consistent interrupts after writing blocks?Best regards.

I am using STM32CubeIDE V 1.9.0, with an Nucleo board with STM32F401, and STLink integrated. Debugger just stopped working. I have spent hours trying to change debugging configurations, upgrading STLink firmware, but nothing. When I press Debug I see a progress bar down in the right in the IDE, it launches debug perspective, but never starts, programs, runs, or enables debug buttons such as Step-into, step over, pause, etc.I am missing something or It must be a known issue. Did someone experiment this issue recently?Thanks.

Hello,When trying to access this page: https://wiki.st.com/stm32mpu/wiki/Bring-up_troubleshooting_grid I get a permission error.This page is found by the search function.Is this page not available to everyone ?Thansk in advance for your reply

Hello, i'm trying to execute a delay code from CCM memory but the MCU is frezing when enter to 'delay_ms' function. It is the first time that i try this and i don´t know if the linker file, and the startup file modifications are good implemented so i post there the modifications:LD File:/* Used by the startup to initialize ccm data */ _siccmdata = LOADADDR(.ccmdata); ... /* Initialized data section into "CCM" Ram type memory */ .ccmdata : { . = ALIGN(4); _sccmdata = .; /* create a global symbol at data start */ *(.ccmdata) /* .ccmdata sections */ *(.ccmdata*) /* .ccmdata* sections */ *(.ccmFunc) /* .ccmFunc sections */ *(.ccmFunc*) /* .ccmFunc* sections */   . = ALIGN(4); _eccmdata = .; /* define a global symbol at data end */ } >CCMRAM AT> FLASH /* Uninitialized data section into "CCM" Ram type memory */ . = ALIGN(4); .ccmbss : { _sccmbss = .; /* create a global symbol at ccmram start */ *(.ccmbss) *(.ccmbss*) . = ALIGN(4); _eccmbss = .; /* create

I created a project with STM32MXCube for the STM32G030F6P6. No changes to the settings. Generate code, run it in STM32CubeIDE in the debugger (STLINK). No changes to the generated code. It stops at main. If I single step it gets to the while(1) loop. If I hit run, and then pause, but PC is somewhere there is no source code. Call stack displays Thread #1 [main] 1 [core:0 ] (Suspended : Signal : SIGINT:Interrupt)then lists0x1fff12c60x1fff1176I have no clue how the CPU gets there. I am just trying to start with something that works before I add one line of code. Any suggestions? I wish there was a WORKING example for this value line CPU.

Dear experts,Still not sure after reading the fine manuals. On CM7 (STM32H7, F7) if I and D caches have never been enabled after reset, can speculative data fetch and instruction fetch still occur?Is speculative access independent from caching?