Ask questions, find answers, and share insights on STM32 products and their technical features.
Posted on March 04, 2013 at 07:45HiRecently I was using my STM32F4 discovery board in my variable speed drive project and got an over-current detection message in the IAR, and LD 7 (Green LED at the bottom of the board) lit up.Now, I think I did not...
Posted on March 02, 2013 at 15:01If I attach cr2032 battery to STM32F103RBT6, how long it can run the rtc and backup the content of ram?
Posted on February 25, 2013 at 21:49 Hi, I use a STM32F4DISCOVERY, and I would like to begin to understant how the USB HOST/OTG works... ands it's not easy, there is a lot of files and lines of code. I saw in ST examples, that in s...
Posted on November 21, 2012 at 01:46Hi All, I am having a problem the STM32F4 USB library labeled version 2.1.0. If I start the device and then plug in the USB, all is good. If I have the USB connected and start the device, my PC will not recogniz...
Posted on March 02, 2013 at 23:19 Hi, i try to use a keypad with my stm32vldiscovery but it doesn't work can u help me? i connect first 4 pin to stm32vldiscovery in PA0-PA1-PA2-PA3 in output open drain, and last 3 pin to PA4-PA5-PA6 as analo...
Posted on March 03, 2013 at 10:14In the header file ''stm32f4x7_eth.h'' bit 0 of RDES0 is defined thus:/*!< Rx MAC Address/Payload Checksum Error: Rx MAC address matched/ Rx Payload Checksum Error */#define ETH_DMARxDesc_MAMPCE ((uint32_t)0x000...
Posted on March 01, 2013 at 16:25Hi Guys, After reading the whole of Google and finding this thread (https://my.st.com/public/STe2ecommunities/mcu/Lists/STM32Discovery/Flat.aspx?RootFolder=%2Fpublic%2FSTe2ecommunities%2Fmcu%2FLists%2FSTM32Discovery%...
Posted on February 22, 2013 at 09:12Hi, I am trying to make a simple delay function using a timer but i get weird results .Here is some of the code void TIMERS_init(){ TIM3->PSC = 23999; // f timer = fclk / 24000 => 1kHz TIM3->ARR = 0xFFFF; TIM3->...
Posted on July 07, 2009 at 10:49use the internal LSE OSC 32Khz #lsi-rtc
Posted on February 28, 2013 at 16:47Hi,I'm developing a self powered USB FS Peripheral Only Device. To detect a USB cable connection to Host I assume to use SRQINT bit in OTG_FS_GINTST register.But for some reason I can not initially clear this bit....
