STM32 MCUs Embedded software

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Forum Posts

USB host CDC for contactless card reader

Posted on June 27, 2017 at 15:34Hi,I try to made a project with a Nucleo STM32F746ZG card.I search an example for made an USB host for a contactless card reader. i try to made a Virtual Com port on the card.Can you help me with an example ?Thx#stm32...

Incorrect work f_mkdir() FatFs SD SDIO

Posted on September 14, 2016 at 14:53Hi, everybody! SD 2Gb connected by SDIO to stm32F407. FatFs. f_mount(), f_open(), f_write(), f_close() work well. But f_mkdir(''DR'') creates failed directory. Its name - ''DR. 1'', and if i try to open it, the m...

STM32F7 HS over FS USB

Posted on June 30, 2017 at 05:39Board: Nucleo F746ZGI configured USB for CDC Class over FS, and I was able to enumerate as a tty.usb serial device.However, I need to configure HS over FS for an application. On STM32F4, I have been able to do so for ...

SW4STM32 Precompiler bug with MEMP_ macro (LwIP)

Posted on July 18, 2017 at 20:26HelloI have made a few projects using the CubeMX that include LwIP. Each time I had compiler errors concerning MEMP_  defines which are marco-generated. If I would use any feature that require the use of one of these ...

andy b by Senior
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Resolved! STM32F7 HAL_Uart_receive_IT revisited

Posted on July 12, 2017 at 18:03STM32F7 HAL_Uart_receive_IT trying to receive and process one byte at a time, and like many others in the forum, I get one byte ok, then the HAL Receive Callback routine will not run again. Here are the basic code pie...

STM32F334 SPI

Posted on August 29, 2016 at 14:02Hi! I am new to STM32 microcontrollers and SPI. I'm currently working on STM32F334R8T6 (Nucleo board 64-pin package) and need to configure it as spi full duplex master without crc for operating MAX31865 temperature ...

vishi100 by Associate II
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Smoke Alarm Tone Detection Using STM32F407

Posted on July 13, 2017 at 12:35Hello All,Application Requirement:   Alarm detection using STM32F407 discovery Board and if alarm tone detect generate alarm signaland system become off.Issue :1> While Mic Place on the Loudspeaker alarm tone detect a...

chintan by Associate
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STM32F4 Cycles Fluctuation With Network

Posted on July 13, 2017 at 12:15https://stackoverflow.com/questions/44964999/stm32f4-cycle-fluctuations?noredirect=1 Hi,I have STM32F4 running with FreeRTOS and LwIP for networking library. I want to know how much cycle that STM32F4 needs when it re...

rama by Associate
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Resolved! VCP device doesn't receive from C# app

Posted on June 29, 2017 at 17:49Hello the STM Community,To quickly introduce my setup, I work on a custom board with a STM32f407 but I have the same issue with the STM32f4-discovery. I generate a simple project for this card, only to try the USB-OTG...