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interrupt routine service latency in stm32f407

Posted on May 29, 2015 at 14:49HelloWhat is the delay between interrupt occurance(e.g. external interrupt on a pin) and interrupt service routine entry?by some initial measurements, it's about 30 cpu clocks.Is it interrupt type(external pin, specifi...

STM32Cube USB VCP on F401

Posted on May 29, 2015 at 12:36Hi,Having had a working USB VCP using the old non-cube drivers, I've spent the last week trying to get a reliable VCP with the new ones - and failing. In fact at one point just uncommenting some irrelevant and unused c...

gw by Associate II
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USB device troubles, setup packet Cancelled

Posted on May 28, 2015 at 17:47When i developing custom USB device, I vent into trouble and at end I isolated a problem:First: USB device answer for this packet is ''Success''  Setup Packet Offset Field Size Value Description 0 bmRequestType 1 2...

stm32l053 usart2 levels

Posted on May 27, 2015 at 23:22As you can see here:https://drive.google.com/file/d/0B979a_DgADKmNkE4N1B0R21BaXM/view?usp=sharingI'm trying to send data out USART2; it seems to be set up correctly and outputting to pin A14, but the voltage levels don...

lee23 by Associate II
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TIM17 PWM

Posted on July 19, 2011 at 17:47Hi, I am trying to produce PWM signal by using TIM17 channel1 on PORTB-9, but i can't get the PWM signal. In debug mode i can see that TIM17 COUNTER register advanced and do overloop, but i just cant see the PWM signa...

ybitton by Associate II
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