Questions tagged [stm32]

The STM32 is the third ARM family by STMicroelectronics. It follows their earlier STR9 family based on the ARM9E core, and STR7 family based on the ARM7TDMI core. The STM32 is based on the ARM Cortex-M family of cores.

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STM32F407VG board won't boot

I have an STM32F407VG on my board. I am able to bring it to the dfu mode. Then I am able to flash it using DfuSe, which also correctly recognizes the dfu device (http://www.st.com/web/en/catalog/tools/...
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1answer
367 views

STM32F205 - can i use a timer to generate a low pulse of specified length

I want a pin to be high by default and then generate two 125-250 µs pulses with 0.1 µs resolution using a command. I was thinking about using TIM1 in one-pulse mode but I don't see a way to invert the ...
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1answer
2k views

LWiP Web Server: Running website using html files

Is there any way to run web server site on lwip library without conversion html to hex, but directly using html files?
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1answer
757 views

USB Serial Communication for STM32F401C-Discovery using Keil uVision5

I have developed a STM32f401c-disco board using Keil, and next I would want to be able to send data out (say just a "hello" string) via the serial link USB-ed back to my PC and show it (I have ...
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1answer
590 views

Hy28B display with STM32

I'm trying to get this Hy28b display work with my stm32f103 MCU. Somehow the display doesn't respond. I've found out I cannot communicate with it, my SPI setup is the following: ...
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2answers
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Delay on STM32F4 Discovery not working

I am trying to make a 10 seconds delay function using STM32F4 Discovery board. Unfortunately, it is not working and I don't know why. I have been two days on this problem. Can anyone help me please? ...
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1answer
2k views

ADC with STM32F3

I want to convert 4 analog input in the same time, I chose the stm32f3 discovery because it contains 4 ADCs. The problems is that I don't know how to get them working together. I have read that only ...
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45 views

Using a neural network in a microcontroller to recognize air-written letters and numbers

Recently I finished a project which combined stm32f030r8 microcontroller and MPU9250 sensor to create a system which would detect orientation on all 3 axis using a combination of accel data, gyro data ...
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116 views

How to set up SPI Communication between STM32F401REtx and MCP2515

master-STM32F401REtx (stm32 nucleo) slave - MCP2515 i connected mcp2515 with ** 1.crystal oscillator (20Mhz + two 15pf external capacitors) 2.power supply(3.3 v0lts) with a bypass capacitor(...
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210 views

How is a Rising Edge defined on STM32?

I'm playing with an STM32F0 and the datasheet clearly defines what a HIGH and LOW signal level is, but I can't find a definition for a Rising Edge. Is it required to go from "LOW" to "HIGH"? I assume ...
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86 views

How to connect STM32F103C8t6 to computer when using USART? [closed]

I'm an electrical engineering student and I've just started to learn microcontrollers.I want to know is there any way to connect my board(I uploaded its picture)to computer when I'm using USART ...
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57 views

STM32F7_Discovery_Boards Digital Pin

Do any of the pins on CN9 or CN13 on the STM32F7 Discovery Board have a constant 3.3 or 5V output?
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290 views

STLink USB communication error when no board is connected

I'm new to using the ST-LINK, and I'm trying to isolate a connection problem, by checking if the ST-Link itself is working well with my computer. I connected the ST-LINK V2 by itself to a Windows 10 ...
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1answer
195 views

STM32 interrupt from Matlab Code

I'm using the STM32 MAT plugin and embedded coder for Simulink to generate C-Code out of my models to compile them onto an STM32F4. As IDE I use TrueStudio and for my MCU Configuration I use CubeMX. ...
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1answer
115 views

Weird character from UART. STM32L100RC

I'm having problems communicating with UART on my STM32L100RC discovery board. I get character such as xþ when I'm sending the letter 'F'. I'm using Hercule to receive data. Hercule's configuration is ...
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3answers
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“Can not connect to target!” using STM32F0 discovery board as ST-Link [closed]

(first posting here so bear with!) Hi, I'm a very novice embedded programmer and have hit a wall trying to use an STM32 discovery board as an ST-Link programmer to an external STM32F051K8T. I know ...
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1answer
183 views

STM32F4 USART CONFIG [duplicate]

The following two statements are true about AVR microcontroller's USART Receiver and Transmitter but im curious about that are these also work on stm32F4 ? When the Transmitter is enabled, the ...
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1answer
900 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
404 views

Stm32F4-Discovery starting problem

I'm using CoIDE and the CMSIS library. The problem is that my programs start up normally only immediately after flashing the board. By disconnecting and reconnecting the board to the usb( just for ...
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1answer
104 views

STM32F1 FreeRtos Debug B SVC_Handler

i tried to run port FreeRtos V9 to stm32f103 with iar compiler made project my self.but when debugging , after call vTaskStartScheduler(); microcontroller jump to ...
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1answer
132 views

STM32F4 OC Clock Jitter Problem [duplicate]

I am using STM32CubeMX to configure an STM32F4 to output a clock signal using Timer 3, Channel 4 on PC9. I have read in the datasheet PLL section that jitter shouldn't be more than 15ps RMS but I am ...
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1answer
199 views

R305 fingerprint sensor with Stm32fo discovery kit

i am trying to interface a fingerprint sensor(r305) with my stm32f0 discovery kit. I was able to interface and make it work with my arduino and PC using the library and Companion software given in the ...
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1answer
122 views

Measuring very High Frequency with STM32F10x

with which software package I can measure the frequency of an external signal with very high frequency? and is there any especial hardware for this goal in STM32F10x micros? Thanks;
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1answer
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Most carefull way to concatenate strings in C

My firmware in one cycle per 10 second is moving string to the output (csv file on SD card). The problem is that string sometimes in non-deterministic way is changing adding values that shouldn't be ...
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0answers
281 views

STM32 and embedded linux? [duplicate]

Possible Duplicate: Linux on ARM Cortex-M3 series Friends, Any ideas on how to use embedded linux into STM32 system ? Any shares or experiences will be very appreciated, Thanks
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3answers
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STM32F103C8T6 3.3v pin max output [closed]

Im using STM32F103C8T6 with sl4432 as small radio beacon. It's working fine, but range much shorter than suppose to be. Sl4432 require max 85 mAh for 20dbm transmit, but how much STM32F103C8T6 3.3v ...
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2answers
560 views

STM32F103 memory addressing

I have written my code for STM32F103C8T6 board in Keil using the adequate startup files. I wrote directly to the memory addresses using information from the datasheet but the ST-Link upload seems to ...
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3answers
368 views

Do I need to split my GND lines?

I am intending to make a multiplexed LED matrix, possibly with 16 rows, 8 columns. This means maximum 16 LEDs (one full row) will be lit at the same time, thus 16 LEDs * 20 mA/LED = 320 mA. According ...
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2answers
2k views

where can I found STM32L4 DSP and standard peripherals library? [closed]

I want to use standard peripherals library for stm32l476rg(stm32-nucleo). But I could not find it. I dont want to use HAL Library. Do you any suggestion?
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2answers
965 views

Generating 8 analog signals from microcontroller [closed]

I want to generate 8 analog independent signals from a microcontroller, such as a BeagleBone or STM32. In my research, I found that I can use an external multi-channel DAC and interface it with the ...
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1answer
95 views

I have miss-sync PAL frames (pictures inside)

In some cases I get this picture: And sometimes I get that picture: analogue camera -> TVP5150AM1 -[external sync discrete VSYNC|HSYNC]-> STM32H7_DCMI I could correct the second picture with offset ...
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2answers
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THROUGH-HOLE PLATING problem [closed]

I'm making a stm32 board at home. How can I plate through holes low cost at home? Is there a low cost through hole plating kit?
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1answer
92 views

STM32 GUI for Timers [closed]

The CubeMX for STM32 MCUs gives an easy graphical interface to configure the Clock tree. I wonder if there is similar GUI tool for configuring the peripherals specially the advance timers TIMER 1 and ...
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1answer
102 views

Arduino STM32 bluepill generate PPM

does anyone knows is there a way to generate PPM (CPPM/PPMSUM) on STM32 Bluepill Arduino? Tnx in advance?
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1answer
559 views

How to read temperature with STM32F103C8T6? [closed]

How can I read the temperature using an NTC thermistor with an STM32F103C8T6 board??
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1answer
671 views

STM32 SYSCLK and CORTEX SYSTEM TIMER [closed]

What is the difference between the two?
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2answers
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STM32L4 USART problem

I tried to develop an USART example on stm32L476 discovery kit, but I've got some problems with the HAL driver-s, I think I'm using wrong USART interface Clock enable, and USART GPIO Clock enable ...
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1answer
965 views

How can I understand FPGA?

I am learning Embedded programming. I already have the STM32F407 board. And there are many things to figure out. However, I've heard of FPGAs, and am wondering exactly what they are. Are they a ...
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1answer
359 views

STM32 Nucleo UART2 tx/rx pins wired to UART3 tx/rx pins [duplicate]

I am exploring UARTs on the STM32F103RB on a nucleo board. The board is connected via USB to my laptop, and I can send/receive messages using the ...