STM32 MCUs Products

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STM32 software reset

Posted on January 08, 2015 at 13:46Hello, I want to know what happend when I do a software reset exactlly. I use the function NVIC_SystemReset that set the SYSRESETREQ bit. In the documentation I found:The SYSRESETREQ bit in Cortex™-M4F Application ...

yohann by Associate II
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Taking microsecond timer without interrupt

Posted on January 08, 2015 at 13:29Hello I'm looking for a solution to get the time between to input signals in microsecond resolution. But I do not want to use an interrupt counting up all microseconds. Is there a convenient solution / method? #...

oli by Associate II
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[QUESTION] About machine cycle of STM32 and STM8

Posted on January 06, 2015 at 10:30Hello, I want to ask you a question. How many crystal cycles make up a machine cycle are in STM32 and STM8? For example, in 8051, 12 crystal cycles make up 1 machine cycle. Thank you!

ADC with DMA arrest on STM32F4

Posted on December 09, 2014 at 14:19Dear All,My board is 429I-DISCO. I tried to code a continuous A/D conversion via DMA on FreeRTOS. At first A/D conversion shortly after power-up was starting nomally by ADC_SoftwareStartConv(ADC3). On the rest of ...

yoshi by Associate II
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ARM Accredited MCU Enginner

Posted on January 08, 2015 at 07:09A Question and Answer Book ''ARM Accredited MCU Enginner''http://www.amazon.com/dp/B00R9BYWWA #arm-cortex-accredited-mcu-aame

Multiple ST-link Debuggers

Posted on December 23, 2014 at 12:59Hi, I'm debuging a network application running across multiple Nucleo boards with multiple instances of the Keil IDE. Every time a target leaves the debugger the ST-Link connection is lost and reconnection becomes...

occam by Associate II
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stm32 100 I2C peripheral not sending address

Posted on January 07, 2015 at 12:51 I am trying to use the I2C peripheral on the STM32 I am finding that about half the time the address isn't being sent. What happens is that the data line is going low (start condition is set) the clock line go...

SPI clock phase setting

Posted on January 06, 2015 at 09:26I am using STM32L152 part to talk to a digital accelerometer using SPI. The SPI signal timing diagram for the accelerometer is illustrated in the attached figure. Looking at the diagram, it is clear that the spi cl...

bnp979 by Associate III
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