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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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38 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 ...
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1answer
33 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 ...
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2answers
86 views

RF communication vs Bluetooth [closed]

I'm starting a new project in my Electrical Engineering degree at my university and I need help. Overall, my project is about a mini robot that collects data and sends it (via wireless communication) ...
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0answers
111 views

Is mbed OS suitable for hard real time systems [closed]

I have been developing embedded stm applications bare metal along with ST Hal for a few years and would still consider my self a beginner as the process of learning in a bare metal environment can be ...
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0answers
14 views

Set STEVAL-IDB006V1 in advertising mode

I have a BlueNRG USB Dongle (IDB006V1) Eval board that I'd like to set in advertising mode but I just can't get it there as it throws a HCI_HARDWARE_ERROR_EVENT. I'...
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1answer
41 views

Stm32L4 microcontroller doesn't wakeup from shutdown

I'm using Mbed coding on STM32L432KC nucleo board. I'm copying the code from the STM32 cube code examples to put my MCU in shutdown. See here. The code compiles fine. I just added an LED blink inside ...
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0answers
93 views

LSM6DS3 Timestamp read in FIFO

I have a LSM6DS3 sensor connected to a MCU by SPI. My goal is to fill the FIFO buffer with the following sets of data: Gx, Gy, Gz, XLx, XLy, XLz, Ts, Pd. I am using a watermark to generate an ...
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2answers
160 views

Minimum connections needed between stm32 MCU and the st-link programmer? [duplicate]

My MCU is stm32L432kc. I've concluded that we need a minimum of 4 connections: SWCLK, SWIO, vcc and gnd. Can someone from here confirm that? And another question is I'm confused how to connect the ...
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0answers
53 views

Built-in power amplifier of the ST7580

The ST7580 is a power line communication device that can be controlled with any host controller. The ST7580 has a buil in power amplifier to allow it to send a modulated signal (0Hz to 250kHz) as far ...
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1answer
156 views

STLink 3.3V target power

In order to program a target MCU with STLink you need to connect 4 wires - SWCLK, SWDIO, GND and VCC (3.3V). STLink v2 programmer has 3.3V pin already present and ready to use. But let's say I would ...
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1answer
56 views

STM32F7 trimming step frequency

In the past I calibrated the frequency of the High Speed Internal oscillator (HSI) in an STM32F0 device adjusting the value of the register RCC_CR, field HSITRIM. In the ref. manual it says that the ...
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0answers
23 views

How to store a data array in flash of STM8S using EWSTM8

I am developing a firmware for driving seven segment using STM8S. I am using EWSTM8 compiler free version. I made the same project for ATMEGA8 too and it worked nicely. In ATMEGA8 I stored the data ...
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2answers
224 views

How to get STM8 unique device ID?

I'm working with a STM8S003F3P6 microcontroller and I need to know an unique ID for each device I will use. I know that PIC microcontrollers has an unique device ID that can be acessed by the user. My ...
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1answer
101 views

ST7590 Power Line Communication chip integrated with a PIC18 microcontroller

I am using the ST7590 chip for PLC purpose which integrates with an STM controller, but my company uses Microchip controllers. I have signed an SLA so I will not post or talk about the non-public ...
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1answer
102 views

VL53L0x Array, Sensor Sync with I2C

I'm working on an array of VL53L0x by ST, composed of 15 sensors. I'm using a polling policy to read the measurements coming from the Array, and each sensor in set to Continue Ranging mode and in ...
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1answer
337 views

STM32F7 programming problems

I am trying to program an STM32F7 series MCU on a custom PCB (migrating over from a nucleo dev board) but I am having trouble connecting to the MCU. Using STM32CubeProgrammer (the new programming ...
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1answer
525 views

STM32L0 GPIO Interrupt problem

I am trying to blink the led(PA5) when PC13 Button is clicked. But it doesnot work. main.c ...
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1answer
200 views

LSM6DS33 how to filter accelerometer values even more (< 50Hz)

I'm trying to use a LSM6DS33 6-axis accelerometer/gyro chip as an inertial navigation aid, participating in sensor fusion. The problem is that the application has large amount of vibrations and the ...
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0answers
60 views

Flashing STM32L0 - QSTlink2

When I am trying to flash STM32L073RZ using QStlink2 with .bin file which was built in Eclipse, QStlink throws following errors: ...
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1answer
66 views

ST10F269Z2T3 abnormal Input Logic Levels

We are using a ST10F269Z2T3 Microcontroller (Datasheet) in one of our old Designs. Among other things, the ST10 monitors the functionality of external devices using Standard logic Inputs. Eg.: Input ...
2
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0answers
593 views

STM32F7 - Quad SPI dummy cycle behavior

I am working with the STM32F767ZIT6. At the moment I am exploring the QuadSPI peripheral. After setting up the peripheral with the following configuration I noticed some undesired behavior of the data ...
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3answers
807 views

Should I use MBED of ARM or native platform of microcontroller suppliers? [closed]

I got a STM32F429I-DISC1 development board from STMicoelectronics and I know MBED support it. So if I want to learn about ARM and develop a commercial product in the future, should I use MBED ...
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1answer
636 views

Detect which momentary switch caused a STM32 cpu to wakeup

Edit: This question is wrong. The stm325105 has only one wakeup pin. But other ST-parts has more than one wakeup pin, so the given answer is valid for those. I have a stm32f105 that has two momentary ...
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1answer
2k views

Atollic + STM32F4 + ST-Link v2 connection problem “Unknown MCU found on target”

I currently have a problem with the connection between the debugger ST-Link V2, ARM Atollic 8.0.0 and a custom board with STM32F469. The Atollic and the ST-Link utility believe the Target is halted (...
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2answers
989 views

STM32F091 VBat pin sinking a lot of mA's

I'm trying to set-up a STM32F091 with a battery connected straight into the VBAT pin. For the first couple times I turned on this vbat at 3V, it worked ok (no weird behavior). However, after trying to ...
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1answer
1k views

Microcontroller VDD and VSS pins are shorted. Does that mean the MCU is fried?

I recently created my own breakout board for a STM32F030R8T6 MCU. The attached image shows the PCB that I designed for it. There are no components, only top copper tracks that get connected to header ...
4
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1answer
141 views

Capacitors for MAX232

I want to use this chip (ST3232CDR) as an RS232 transceiver. The problem is that I want to power the chip using 2 levels of voltage (3.3V and 5.0V) using a simple jumper, but in the datasheet (http://...
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3answers
599 views

Confused about polarity of Transformer

I am confused about the Transformer dot polarity. I got design from ST's edesign Suite. Here is schematic for that :- Now I need to order the design for transformer and the transformer design centre ...
2
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1answer
2k views

Aren't pull-up / pull-down options documented for STM32F103?

While trying to configure the GPIOs using CMSIS on a NUCLEO-F103RB board, I couldn't seem to find in the reference manual how one is supposed to choose between internal pull-up and pull-down resistors....
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1answer
182 views

How to find Polarity and Start End point of transformer?

I am using ST's eDesign Suite for designing power supply. The suite helps with circuit, BOM and transformer design specs. I contacted the transformer design firm to get my transformer designed. I ...
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1answer
320 views

What resistor values should I use with this boost DC-DC converter IC?

I'm trying to use a STOD1317BTPUR DC-DC Boost converter to drive a 12v OLED Display from a 1-cell lipo (~ 3v - 4.5v). The thing is that in the application circuit provided in the datasheet the values ...
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0answers
4k views

STM32F429 HAL library CAN_Transmit timeout

I'm having a bit of trouble with the ST32CubeF4 v1.13.0 example of a CAN network. I'm using an STM32F429 discovery board, but I have ported over the CAN network example from the STM324x9_EVAL board. I ...
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1answer
97 views

Can I use CAN and USB at the same time with STM32F042K6U

I would like to use the STM32F042K6U but I would like to use USB and CAN. But when I look up the pinouts in the datasheet it doesn't look like I can map either USB or CAN to different pins. The ...
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0answers
882 views

How to recover from a brown out on STM32L0

I'm using STM32L0. My firmware operates at 2V. These are stepped down from 24V. If I have a short of the 24V for a short period of time this causes a brown out on my 2V the voltage begins to oscillate ...
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3answers
2k views

What does “Low density device” mean? About STM8 / STM32

STM32 and STM8 devices have some types: Low density devices Medium density devices High density devices About what "density" mean? About quantity of periphery or about quantity of flash or something ...
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1answer
652 views

What is the best way to design GUI on ARM cortex-M microcontrollers? [closed]

STM currently supplemented emWin for free, but it got a Win98-ish style which is not very user friendly. Is it possible to use qt to design UI? What are the recommended approaches?
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0answers
433 views

How to get Keil Trace to work on stm32f4 for debugging?

I'm using stmf429-disc board with Keil 5.I've enabled trace check in hardware debug's trace window and have set trace clock to 168MHz which is the core clock freq. Also enabled the port 31 for rtx ...
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1answer
2k views

Why can I read accelerometer and gyroscope data on the LSM9DS1 with SPI, but not the magnetometer data on the same device?

I'm currently working on a device that uses the LSM9DS1, a 9-axis motion sensor by ST Microelectronics. I’m using a PIC24FJ128GB202 microcontroller by Microchip, and communicating with the sensor ...
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1answer
53 views

ST Smart Voice dev board (MK126V)

I have some trouble with my ST MK126V3. Is it possible to program the board with the ST-LINK/V2? I can't work out from the datasheet what debug interface is used and how to connect it properly. Link ...
2
votes
1answer
1k views

Using ST-link for 1.8V target voltage

I'd like to program a LIS331EB which is an ST product with an integrated cortex-M0 core. ST says it can be programmed with ST-link even though it is neither an STM32 nor STM8. The lis331eb's core and ...
2
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2answers
653 views

How is the bootloader and firmware uploaded during production? [closed]

If there was a product with 5 MCUs (STM32303) and a main CPU being a AM5718, how would the bootloader be uploaded to each chip? The same question about the firmware how would the firmware be uploaded ...
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3answers
2k views

How to program multiple STM32Fs on same PCB

I work in a management roll and only have a very limited electronics knowledge (enough to make simple arduino projects etc). We are working on a product at the moment which has 3 STM32F303s and 2 ...
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1answer
4k views

STM32F0 I2C not working

I am trying to establish I2C communication between STM32F030K6T6 mikrokontroller and HH10D humidity sensor. The problem is, that after I call I2C_TransferHandling() the I2C_ISR_TXIS flag won't be set, ...
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6answers
4k views

Parameters when choosing a relay

Is this a good circuit to use as a air condition switch with a help of microcontrollers 5V? What relay to use in this situation? What parameters should I take into consideration when choosing relay?
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3answers
812 views

How to get values in terms of G in STM32F3 Discovery board

I am working on STM32 F3 Discovery Board. I am accessing accelerometer of the board. While doing so I am getting values for X,Y and Z axes. But these values are some random numbers. I want the output ...
2
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1answer
428 views

Can ST L3GD20 Gyro's Low pass filter be disabled?

I am fairly new to hardware and datasheets and looking at the datasheet of ST's L3GD20 Gyro I know that the high pass filter's frequency can be chosen, but it can also be disabled at all. I cannot ...