STM32 MCUs Products

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Forum Posts

SysTick Interrupt suddenly dissapears

Posted on May 22, 2015 at 08:11 Hi Folks! I have a Problem with the Systick Timer. I use it to handle some periodic functions. The SysTick Timer is configured to 500us. Everything works fine. Now I need a delay functio...

lattner by Associate II
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  • 3 replies
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Cannot connect to the target through SWD.

Posted on May 14, 2015 at 08:50I could not connect the target (STM32F103ZET6) through ST-LINK or j-link(Both emulators are work well on other demo boards). The MCU is powered by at 2.7V. Strangely , I've checked all the connections of the SWD interf...

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kelvin by Associate II
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Another ST Link Can not connect to target error.

Posted on May 21, 2015 at 03:46Hello,I bought a ST link v2 and stm32f103 dev board from ebay (http://www.ebay.com/itm/331348706014?_trksid=p2060353.m2749.l2649&ssPageName=STRK:MEBIDX:IT) plugged up the st link to the header on the board as such. s...

yoma1993 by Associate II
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  • 7 replies
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PWM 3 channel with shift phase 120 degree

Posted on May 02, 2015 at 16:41Hi.I am working with STM32F4 MCU and looking for help in the next question: I need to do PWM 3 channel with shift phase 120 degree on the start PWM operation. For example, PWM CH1 with 0 degrees, PWM CH2 with 120 degre...

user button interrupt (STM32F091)

Posted on May 21, 2015 at 09:01hello ! I tried to make work an interrupt subroutine by pressing on user button present on the nucleo f091rc... I wrote into ''stm32f0xx_exti.c'' the function EXTI13_Config() as shown in code example : void EXTI13_C...

raphael by Associate II
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  • 2 replies
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Sending counter with USART2 (NUCLEO)

Posted on May 20, 2015 at 18:58Hello. I'm new to microcontrolles and I need to write a program that allows sending counter every 15 miliseconds through USART2. Counter should increase every second. I got the sending part. It's working but I can't ge...

Interfacing LPSDR SDRAM with STM32F427

Posted on May 21, 2015 at 11:52Hi, Is it possible to interface 1,8V LP SDRAM with the STM32F427 without using level conversion while the STM32 is supplied with 3,3V?

fo by Associate II
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  • 1 replies
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can't set reset a Bit (STM32F091 64pins)

Posted on May 04, 2015 at 11:49Hello everyone. My target is STM32F091C I want to send something using SPI and after that make an impulse with a bit of my microcontroller. On my scope I see that I send well the data but the impulse is not generate. ...

raphael by Associate II
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  • 2 replies
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