STM32 MCUs Products

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Forum Posts

STM32 sends weird characters to COM ???

Posted on October 06, 2014 at 17:36Hello, I send a char string to com port using sym32f4( with 3 pins only: GND VCC TX) and listen using ''hercules'' program finded on the net. I get weird characters, took a screanshot and uploaded as attachment. Ca...

aybala5 by Associate II
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  • 14 replies
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Mising startup file

Posted on September 23, 2014 at 01:44Hi All,I have done a search to no avail on this:Using Keil tools and Cube 4.3.1 (STM32F407), generating the project results in missing the startup file - but only at random.The folder ''Application/MDK-ARM'' does...

STM32CubeMx STM32F3 CCM-RAM

Posted on September 10, 2014 at 00:31Hi,  I would like to know if there are the option to create a IAR project in the STM32CubeMx that use CCM-RAM to run interrupt routines. If not. Are there plans to add it in the future?Ari.

Asantos by Senior
  • 388 Views
  • 1 replies
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Clearing TIM OCxREF signal

Posted on October 04, 2014 at 22:23Reference:RM0090STM32F407xx Reference ManualRev6Section 17.4.7TIMxCCMR1->OC1M--PWM Mode 1,2Quote:''2: In PWM mode 1 or 2, the OCREF level changes only when the result of the comparison changes or when the output co...

dibs by Associate II
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  • 1 replies
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stack pointer incorrect

Posted on March 25, 2013 at 10:39Hi, We are trying to migrate from IAR Kickstart kit with IAR-STM32F207ZG-SK board to our own board. On our PCB we have STM32F207ZC mounted. The small test code is successfully downloaded with J-Link. Downloaded C:\da...

optifier by Associate II
  • 2160 Views
  • 9 replies
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Problems with programming STM via ST-Link SWD

Posted on October 05, 2014 at 10:08Hello, I use your microcontroller STM32F407(lqfp100) at my work. We develop at the research institute a system of control engine. I developed a program at STM32F4 Discovery. But when I developed my scheme where use...

External Voltage Reference? To get a most accurate ADC result

Posted on October 06, 2014 at 09:53Dear all,We are trying to use the on-chip ADC of STM32F407. We have read two appnotes, which are AN4073 How to improve ADC accuracy when using STM32F2xx andSTM32F4xx microcontrollers and AN2834 How to get the best ...

cyqdtc by Associate II
  • 515 Views
  • 1 replies
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How can I return from sleep mode on stm32f401

Posted on October 03, 2014 at 14:28Hi, I'm facing with a strange problem, in fact I'm working on Discovery platform to study the stm32f4 low power modes. I'd like to enter and exit from sleep mode and to do this I use an UART to send the command to ...

DUrbano by Associate III
  • 1551 Views
  • 8 replies
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Cascaded Timer Causes Delay

Posted on October 03, 2014 at 16:14Using the STM32427, with TIM5 set up as a master to TIM1 and TIM8. This works fine; I get synchronous pulses like I expect. However, I'd also like to have TIM1 act as master for TIM4. When I enable TIM1 in master m...

jvavra by Associate III
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  • 1 replies
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