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Questions tagged [st]

STMicroelectronics(It is commonly called ST) is a French-Italian multinational electronics and semiconductor manufacturer headquartered in Geneva, Switzerland. it is Europe's largest semiconductor chip maker based on revenue.

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STM32MP157D-DK1 OS building

I am trying to flash binaries that I have generated with Yocto, intended for an STM32MP157D-DK1 board. However, during the process, I am encountering the following error: 'Partition 0xBB not found in ...
SADALI Mohand's user avatar
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debug error in during launch STCUBEIDE

I am trying to run a demonstration by st but I get a debug error saying the .elf file of the project cant be launched. How to i fix this? I havent changed anything from the example and i just want to ...
Maia Nieves's user avatar
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65 views

ST AN5457 - What is "m"?

I'm reading this application note. What does the formula on page 22 mean? Is this the adjustment factor and how do I get this formula?
Kampi's user avatar
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STM32 NUCLEO programming problem with STLink V2 Clone

Having a trouble with STLink programmer. Error occours in Keil. When I am trying the download code to flash this error appears. If I am using a USB port for debug there is no error. But I need to ...
MSB's user avatar
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Inquiry Regarding NTC Selection and Placement for ST L6924D LiPo Battery Charger

I am planning to create a lithium-polymer (LiPo) battery charger using the ST L6924D charging IC. Could you kindly recommend an appropriate NTC (Negative Temperature Coefficient) for controlling ...
Atrahasis's user avatar
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Why is this ST-link V2 not pairing with the STM8s MCU?

I had connected this circuit like in this schematic using the ST-LINK V2, however I made some changes, I connected the 2 and 3 pins (OSCIN, OSCOUT) to 12pf capacitors (I have no 20pf or higher) and ...
Hazardous Voltage's user avatar
1 vote
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145 views

Monitoring VREF+ buffer output in STM32L552

I am working with the STM32L552 microcontroller in a critical application where a portion of the external circuit relies heavily on the 2.5 V VREF+. The stability of this reference voltage is ...
tronhawk's user avatar
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4 votes
1 answer
200 views

What kind of component this is (ST e3 ZOM Y734)?

please help to identify following electronic component from the image: It is clearly seen all symbols: ST e3 ZOM Y734 So it's definitely "STMicroelectronics&...
lol lol's user avatar
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1 answer
199 views

USBLC6-2P6 - does the direction matter?

I'm designing a simple PCB with STM32F4 MCU and USB, and I want to use USBLC6-2P6 for ESD protection. However, using the EDS protection device as presented in the datasheet creates the need for me to ...
user747644's user avatar
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2 answers
442 views

Can I port STM32 code to an ESP32 (espressif) microcontroller?

Is there a reliable way to convert STM32 code to run on an Espressif microcontroller such as an ESP32 / ESP8685 ? Or would this have to be done manually?
Connor Dorward's user avatar
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116 views

ST ROM Bootloader boot0 pin

How is the boot0 pin is intended to be used by ST chip designers in real world applications? Once the boot0 pin is set high, the chip executes the bootloader section in memory and it will not go back ...
KoS's user avatar
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Error in ST1S41PHR LED Driver circuit diagram? "Unfinished Nets"

I am just starting trying to design simple circuits (using EasyEDA), and I have an issue with an "Unfinished Net", in this 12Vdc_in, 9Vdc_out, 2.5A Buck Driver circuit. From the both the ST ...
newguyjon's user avatar
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125 views

Multiple failed ST-LINK/V2

I have been using a ST-LINK/V2 for a project that uses a STM8 microcontroller. The ST-LINK is connected to the microcontroller using the 4 pin SWIM port. The microcontroller is powered from an ...
user2248702's user avatar
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145 views

Adafruit ST-Link STM8/STM32 v2 can't connect to STM32F091

I've an Adafruit ST-Link STM8/STM32 v2 which I need to connect to an STM32F091. The MCU is powered from an external source and I have correctly connected the SWCLK and SWDIO as well as GND and 3.3V. ...
NicoCaldo's user avatar
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1 answer
2k views

ST-Link doesn't show any data on the serial port

I am working on Nucleo board programming circuits. This board programs like an Arduino, you can compile, run and show data on the serial port. Actually, you can do debugging, too. You just need a USB ...
TA2ERR's user avatar
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2 votes
1 answer
297 views

What is this SOIC-8 part from ST?

Marked "393" and "(ST)GZ439" or "6Z439" under conformal coat. Siemens DC/DC PSU section, near a UC3843B current-mode PWM controller, HF transformer, etc. Checked the ST ...
rdtsc's user avatar
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Get zeros when read flash STM32F405

G'evening! I'm working with a board on STM32F405RTG6 (unfortunately, I can't post a photo of the board). When I try st-flash read filename.bin 0x08000000 0x000FFFFF ...
ONamaeWa's user avatar
3 votes
1 answer
2k views

Custom STM32H7 board + LAN8742 ethernet problem

I develop custom board with STM32H743VIT6 with ethernet LAN7842. When I plug ethernet, leds are not blinking. Is it hardware problem? When I plug eth to erased NucleoH7 board leds always blink. My ...
martin_embed's user avatar
1 vote
3 answers
691 views

How to find the lightning protection of a TVS diode?

I am using a STmicroelectronics ESD diode SMAJ58A-TR, which has a surge protection standard of IEC 61000-4-5, but they have not mentioned the value like 4kV, 6KV. While checking in datasheet they have ...
Selva97's user avatar
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2 answers
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Vcap Pin on STM8S003F3

I am using STM8S003F3P6 to drive a relay and control 4 LEDs using a switch. However, my programmer is not able to detect the chip and am not able to program it. I think it might have to do with the ...
Amorphous's user avatar
  • 169
1 vote
1 answer
143 views

Clarification on BlueNRG-MS API

I'm building a BLE peripheral device using the ST BlueNRG-MS chip and need to implement a few features where I'm not really sure what's the right way to go. This is my first BLE project so maybe ...
po.pe's user avatar
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0 votes
2 answers
94 views

Secondary MOSFET in STUSB4500

Could someone explain to me how reverse current protection in the STUSB4500 reference design should work? The purpose of the secondary MOSFET was already answered in this question, but I took a look ...
Jay Aslan's user avatar
1 vote
1 answer
1k views

STM32L4 clock set up

I'm using STM32L4R5 for my project and this is my first time designing a clock source and using an ST microcontroller. I'm trying to figure out the clocking hardware configuration by reading the clock ...
cy1125's user avatar
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1 vote
1 answer
366 views

Clock source for STM32L433 does not switch to PLL

I am trying to switch the cyctem clock source on the stm32l433 MCU from the MSI (set by default) to PLL. My code for setting up the PLL & switching the sysclk source is this: ...
JustClaire's user avatar
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1 answer
144 views

Calculating resistor values for STEF01 overvoltage protection

EDIT : I was making a mistake and there isn't an issue in the data sheet (see answer below). Keeping here for reference to others. The STEF01 is an electronic fuse by ST with features such as soft ...
Elliot Woods's user avatar
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1 answer
123 views

Nucleo L476RG GPIO Switching behavior

In a Nucleo L476RG with system/timers/peripherals CLK at 80MHz, in the main loop I have code to directly access GPIOA register: ...
Fernando García Redondo's user avatar
1 vote
1 answer
305 views

STM8 ST-Link high power consuption & unable to connect

I have a ST-Link V2 and I am trying to connect with SWIM. So, i simply connect the pins, but the power consuption is very high (80 mA!), so high that che voltage regulator gets warn. In ...
max_s's user avatar
  • 31
2 votes
2 answers
360 views

Lis3dsh interrupt doesn’t pulse

I need to get a interrupt when some motion is detected. I tried example state machine from the application notes (wake up), and connected led to int1 for debugging. After setting all registers and ...
Denis Jelesniak's user avatar
1 vote
0 answers
161 views

Motor Driver L6203 Questions

Hello I am a beginner trying to use the L6203 motor driver. I am working while looking at the L6203 data sheet, and I am trying to make a circuit as shown in the picture below. However, I am curious ...
junghun LEE's user avatar
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1 answer
889 views

2 devices with different CAN baud

I have a project where I need to talk with 2 devices x & y with 125kbps and 500kbps CAN speeds respectively. So I selected an MCU (F446RC) with 2 CAN controllers from ST. The BOM cost went up and ...
ProPlayerMaxUltra's user avatar
1 vote
3 answers
11k views

STM32 create a microsecond timer

I'm relatively new to stm32 stuff and I want to get data from some rotary encoder, and I'm using interrupts to do so, I'm using a USB cable to send data from MCU (STM32F103C8T6) to my PC device and I ...
outlandish's user avatar
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0 answers
762 views

Linker error in Iar

When I compiled a program using stm32l476 micro controller using IAR embedded workbench IDE, I am getting the following linker error. Error[Li005]: no definition for "rtt_seq" [referenced ...
Nileena160's user avatar
2 votes
1 answer
842 views

Two different ways to open a project in IDE's for MCUs

I am using following 3 different IDE's for ARM based MCU's. TI's CCS ST's CubeIDE IAR's Workbench I have to move the entire projects which are build on each of these IDE's on different PC's from ...
homecloud's user avatar
  • 139
-1 votes
1 answer
336 views

STM8 alarm firing shortly after resetting time

I'm using an STM8L151F3 with the SPL, compiled with SDCC. I'm trying to generate an alarm interrupt after n seconds, then another after m seconds. To do that, I reset the time to 0, then set the alarm ...
Jackson Seal's user avatar
0 votes
1 answer
1k views

How to flash binary code to the NUCLEO-F207ZG device?

When I want to upload a binary file executable.bin to the STM32F407G device, I connect it to the PC using the mini-USB cable and execute the command ...
mercury0114's user avatar
1 vote
0 answers
453 views

Nucleo-F767ZI won't start if powered through external 5V

I'm trying to power a Nucleo-F767ZI demoboard through external 5V(through E5V pin). When it's powered by USB, the code runs as expected(some LEDs blink), but when i attach the external 5V, and i ...
RawCode's user avatar
  • 85
1 vote
1 answer
994 views

Unable to find COM for STM32

I developed a PCB for a project using STM32WB55 and after getting it manufactured I am trying to connect it to the computer using a Micro USB cable in order to run the code on it. However, when I ...
Bogdan-Mihai Nistor's user avatar
0 votes
2 answers
607 views

Setting GPIO pin sate before initialization

I was going through ST Microelectronics code and found the following code ...
Electronics Dev's user avatar
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0 answers
121 views

Bluetooth Broadcasting (BlueNRG-2)

I have a few questions regarding the use of the BlueNRG-2 device I am building a system where I have to send small data packets (10 bytes) from 1 unit to 10+ units. I am aware that you can only have ...
user71749's user avatar
4 votes
1 answer
6k views

Difference between I2C STM32 HAL functions

I'm using I2C in a project on STM32, and i was wondering what's the difference between HAL_I2C_Master_Transmit and HAL_I2C_mem_write, and the difference between HAL_I2C_Master_Receive and ...
DTl's user avatar
  • 87
0 votes
1 answer
496 views

Slow FIFO read from LSM6DS3

I have been trying to read FIFO buffer from LSM6DS3 inertial sensor via i2c. The processor will read LSM6DS3 buffer every 20s so the FIFO will contain approximately 3120 bytes of accelerometer data. ...
code_numb's user avatar
0 votes
1 answer
299 views

Having problem in blinking the LED on Nucleo-L073 board, through HAL library

Could you please advice me where I make the mistake, the LED is on but it does not blink. ...
Atrahasis's user avatar
  • 185
2 votes
3 answers
5k views

ST-LINK/V2 repairing issue

My original ST-LINK/V2 has been broken. There was the Short circuit between VDD and GND pins. I changed the MCU(STM32F103C8T6) and the voltage regulator(LD3985M33R) with new ones. Short Circuit ...
OzkulA's user avatar
  • 155
0 votes
1 answer
976 views

How to run a circuit with both 5V and 3V3 supply voltage?

I'm currently designing a circuit requiring 3V3 (an ARM MCU) which should run on both 5V and 3V3 input. Since the power requirements are fairly low, a linear voltage regulator should suffice. I want ...
ooxi's user avatar
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1 vote
0 answers
868 views

Unable to program and debug ST BlueNRG-M2SA Bluetooth module

I would like to ask you for help with programming and debugging the BlueNRG-M2SA module. I am just not able to get started and successfully connect to the module using ST-Link v2 over SWD. Neither ...
vrbadev's user avatar
  • 111
1 vote
0 answers
135 views

Why the current measured form the microcontroller(Stm64 Nucleo L433RC- LPSleep mode) differ from the current value written in the datasheet?

I am using STM32L433RC -p microcontroller for current measurement. The current in the microcontroller is measured using X Nucleo LPM01A module.I was doing a current measurement for Low Power Mode (...
jojo varghese's user avatar
0 votes
1 answer
2k views

Which STM32 development board is suitable for a beginner? [closed]

I am trying to learn STM32 programming. My goal is make my own embedded system using STM32 chip on separate PCB. There are several development board in ST. What is the most suitable one for a ...
user_fs10's user avatar
  • 861
8 votes
1 answer
13k views

Cube IDE : Error: unknown type name 'HAL_StatusTypeDef'

I am taking code from a stm32f0 series and trying to convert it to a stm32l4 series dev kit. I have already changed the necessary addresses and include files that I needed to migrate, but I keep on ...
user150963's user avatar
0 votes
0 answers
316 views

Can't use the Wake-on-Motion functionality of an MPU9250 with STM32

Hi there :) I'm trying to use the Wake-on-Motion functionality of this particular MEMS (MPU9250) with my STM32L152C-Discovery board: if the MPU9250 sense a motion, the INT pin will be high. To achieve ...
RawCode's user avatar
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0 votes
1 answer
61 views

ST STM32H743XI (ARM M7 based) MCU - ADC Configuration

I am using the ST STM32H743XI (ARM M7 based) MCU, I want to use the ADC to measure 7 Hall sensors (use both slow and fast channels), i need the conversion time for all seven ADC channels to be the ...
Peter Berger's user avatar