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Forum Posts

Difference between HSE and HSE Bypass

Posted on February 21, 2015 at 17:51After some hardware struggles with my new STM32F3 disco board I finally got it running correctly and at high speed. I was wondering, however, that there seems to be no difference between HSE and HSE bypass mode, a...

How to determine the origin of Wakeup from Standby?

Posted on February 16, 2015 at 21:41I am studying awakening from Standby Mode on STM32F100CB. I have this context: we set up WKUP pin and RTC Alarm, and go to Standby. Then, rising edge on WKUP pin or RTC Alarm wakes the system up. Here are a few th...

apolotsk by Associate II
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STM32F205RCTb system boot loader

Posted on February 18, 2015 at 10:52HiWe want to use USB DFU feature available in system bootloader for firmware upgradeController used: STM32F205RCTbHow to jump to bootloader from application(Running in Flash). what should be the Boot options (Boot...

Timer 3 PWM - strange behaviour on first pulse

Posted on February 18, 2015 at 23:50Hello, I am programming Timer 3 for PWM mode. Please see the attached image. The yellow trace is Timer 3, the green is Timer 4, which follows Timer 3 by a period of 180 degrees shift. The top PWM train (Timer 3) ...

How can put points between the string?

Posted on February 20, 2015 at 02:05 hi all How can put points between the string? ( for example: 00.00) thanks void Str_convert(unsigned long t, unsigned char *str, unsigned char n) { unsigned ...

kemal by Associate II
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  • 2 replies
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DAC can't output 0V

Posted on February 19, 2015 at 07:41 I'm using stm32f429 discovery board. I have configured DAC Channel 1 (PA4) for DAC ouput. When I try to configure ouput in the range of 0.15v - Vref(2.97v) I'm getting the ouput properly, but when trying to ...

STM32F105RC I2C2 always busy

Posted on January 03, 2013 at 16:15 Hi, I hope someone can help. I have got the I2C1 peripheral working fine with the above chip, but when I try and initialize the I2C2 peripheral, the busy flag is always set. Does anyone have any i...

owen2 by Associate II
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  • 6 replies
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