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Forum Posts

Extra Data Transferred by DMA

Posted on July 21, 2015 at 21:27 Hi All, I'm configuring my DMA to transfer 48 bytes of data, and am triggering the DMA interrupt both on TC and HT events. Currently if I disable the DMA after the first interrupt, so I would expect to see...

daniel2 by Associate II
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  • 3 replies
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STM32F4 USB minimum operating voltage

Posted on July 21, 2015 at 22:20I am running the stm32f407 at 1.85V and was wondering if it would be possible to get USB working at this operating voltage. I've pulled up the d+ line to Vbus but cannot get proper enumeration. I believe as long as th...

gradoj by Associate
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  • 2 replies
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STM32F7xx I2C bus frequency too high

Posted on July 21, 2015 at 20:51Hello folks,I am working with an STM32F7 Discovery board which uses an STM32F746NG microcontroller.I would like to use the I2C peripheral without using the STM32Cube HAL, just by directly accessing the registers.I man...

joel23 by Associate II
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  • 2 replies
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DMA on SPI not sure if working !

Posted on July 21, 2015 at 21:24Hi , I'm driving a 1.4'' TFT LCD on STM32F4 Disco , via SPI3 . I wanted to increase the speed of writing to the LCD so I decided to use DMA. The code compiles and work nicely but still too slow and no difference can b...

monta by Associate II
  • 517 Views
  • 1 replies
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STM32F4-Discovery connection problem with STMStudio

Posted on January 05, 2015 at 22:48Hi,I have installed STMstudio 3.3 on win7 x64, and I have installed java x86. (http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html).When I want to run, I select ST-Link SWD,but I get...

zivadin by Associate II
  • 1062 Views
  • 4 replies
  • 1 kudos

STM32F030 bootloader reliability over rated temperature range?

Posted on July 15, 2015 at 01:11I'm thinking about using a STM32F030 in a slave application where a master may need to reprogram the STM32F030 via the bootloader in the field.  I have had good success with this using STM32F100 parts as bootloader sl...

pmoore by Associate II
  • 1024 Views
  • 5 replies
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STM32L152 Oscillator Circuit

Posted on July 21, 2015 at 14:07We are using the L152 processor in a new design. This is the first time we've used the STM32 family and it is mostly working wonderfully. However, on the three prototypes we have, only one crystal oscillator works rel...

cbolton by Associate
  • 522 Views
  • 1 replies
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ADC Vref stm32f4 disco

Posted on July 21, 2015 at 13:42Hi, I want to know how could I get a range 0-5V in ADC. I know that normally it's from 0-3V. It's enough connecting 5V to Vdd? Thank you

fiulala by Associate II
  • 613 Views
  • 3 replies
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