Ask questions, find answers, and share insights on STM32 products and their technical features.
Posted on June 16, 2017 at 23:56From the STM32F412G-DISCO demouint32_t HAL_GetTick(void){ return (DWT->CYCCNT / (HAL_RCC_GetHCLKFreq() / 1000)) ;}How exactly does this wrap properly within the 32-bit number space? Answer: IT DOESN'T
Posted on May 23, 2017 at 10:55Hello,I am trying to reduce the HCLK frequency down to 8MHz or less on an STM32F405 MCU.Using STM32CubeMX, when I configure an HCLK clock lower than 30MHz with the clock configuration tool, the box with the HCLK freque...
Posted on June 29, 2017 at 16:01Configured USART1 of mcu to 500 kbit/sec using STM32CubeMX Version 4.21.0.Code created by Cube seems to be correct.Measurement shows that bitrate is 250 kbit ( a 10 bit character needs 40 µsec).See Attachements.USART...
Posted on June 29, 2017 at 08:03Hi,I prepared several project files for a few DISCOVERY boards (I shared examples for STMF429, STM32F746, STM32F412, etc), but this time it seems to take more time than I expected. Maybe someone from you guys already ...
Posted on June 22, 2017 at 20:13Any reason not to drive 6 L6472 daisy chained devices directly from the STM32F303 SPI bus? Running at ~1MHz.
Posted on June 27, 2017 at 12:54I recently bought a X-NUCLEO-IDB04A1 and wanted to use it with Arduino. How do I go about it ? Please help me out.My aim is to collect the sensor data from http://www.st.com/en/ecosystems/x-nucleo-iks01a1.html and sen...
Posted on June 22, 2017 at 14:35Hello,the Ethernut (http://www.ethernut.de) STM32 Ethernet driver from svn head (/sourceforge.net/projects/ethernut/files/) works reliable for F107/F2/F4 and F74. However for F767 Revision A chip (no Rev Z chips avail...
Posted on June 29, 2017 at 06:35I am looking for a method to build uart rx/tx circular buffers for STM32L476 which communicate using DMA. In 40.5.2 of http://www.st.com/content/ccc/resource/technical/document/reference_manual/02/35/09/0c/4f/f7/40/03...
Posted on March 22, 2015 at 17:50I found the problem. When I quickly connecting/disconnecting USB device(LS HID mouse) from STM32F207 USB host FS port the occurs another situation: USB constroller stop generate host channel and/or port/disconnect ...
Posted on June 27, 2017 at 15:02Hi.I'm trying to use DMA to drive PWM output for led effects. MCU write seems to be OK, however there's few very weird consepts related to DMA configuration I don't seem to be able to wrap my head around.void HAL_TIM...
