STM32 MCUs Products

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Forum Posts

Linker file error

Posted on December 23, 2014 at 10:40I am trying to build a program at a different location of flash, I am assigning the memory of flash at 0x08020000(by default it will be at 0x08000000). during build time, it pops multiple errors like this lkarm E1...

frecuency limit

Posted on December 22, 2014 at 19:54 i'm triying to set a timer with a period of 1 us for a input capture application but i get a maximun of 600 khz (more o less). A led toggling at 300 khz. i can reach accurately any value under 500 khz ...

jdpv by Associate II
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  • 2 replies
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stm32f407 pwm control both dutycycle and phase shift

Posted on December 14, 2014 at 11:26 I'm new with the stm32f407 discovery board and I'm trying to make 4 signals which I can control phase shift and dutycycle. The thing is, when i set my timer on PWM mode I can't control phase shift between chan...

zarkscon by Associate II
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  • 5 replies
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TIM14 Period Measurement

Posted on December 22, 2014 at 17:36I have an existing STM32F407 family target that has a pulsed signal at PF9.  I need to measure the period of this signal.  This signal has a fixed low time followed by a variable high time.  PF9 can serve as an in...

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uprogrammed STM32F4

Posted on November 22, 2014 at 18:35Hi Are some PINs on an unprogrammed device high or low? I have an unprogrammed STM32F4 and a short circuit on the power supply 3.3V, therfore I can't program the chip... Regards

dominik by Senior
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  • 2 replies
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STM32F4-discovery GUI_DispString()

Posted on December 21, 2014 at 11:43Dear friends.I try to use StemWin libraries with STM32F4290-discovery. As a base I used ADC-DMA project.The code is the following: RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_CRC, ENABLE); SDRAM_Init(); GUI_Init(); GUI...

baev_al by Associate III
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  • 0 replies
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unique ID of mcu

Posted on December 20, 2014 at 20:25hi every onei have 2 question :1- is there a unique ID for each stm32 mcu ?how we can read this(if there is ) ?2-i need to save a few data in mcu which dosent erased after reset (like eeprom )is there any internal...

mhdizgah by Associate II
  • 443 Views
  • 2 replies
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USB OTG interferes with ST-Link

Posted on December 19, 2014 at 15:10I have a problem where USB OTG sometimes interferes with the ability to program the MCU though the mini USB port. Basically what happens is that when I try to program the MCU, the software on computer halts. When ...

macfrenz by Associate II
  • 922 Views
  • 6 replies
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Composite HID MSC - Periodic reset when SD not present

Posted on December 18, 2014 at 05:29I'm developing a composite HID and MSC device. The MSC is backed by a uSD card and FatFS.Everything is working great when the uSD card is present but if there is no uSD present DCD_HandleUsbReset_ISR is getting ca...

seanb by Associate II
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  • 4 replies
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