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ADC scan mode problem, STM32F407

Posted on June 16, 2014 at 17:35The original post was too long to process during our migration. Please click on the attachment to read the original post.

rgrimes by • Associate II
  • 1188 Views
  • 6 replies
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STM32L151 SPI only sending zeros.

Posted on June 13, 2014 at 18:32I'm trying to get SPI2 up and running to talk to another chip and I'm having some problems. I can see my SCK and MOSI traces on my scope but my DR register always has zero. I've even tried this right after SPI config:...

kkarasti by • Associate II
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  • 7 replies
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de-initialize USB completely

Posted on June 16, 2014 at 10:01Hi, I work with STM32L1 and use the USB in VCP. The firmware work perfectly. I use the library ''STM32_USB-FS-Device_Lib_V4.0.0'' and I use the example firmware ''VirtualComport_Loopback'' The usb work!. but I need co...

RTC subseconds issue

Posted on June 16, 2014 at 15:25Hi,I am working on STM32F303VCT6.The source clock is a cristal of 32.768Khz.I need to have a time resolution on the RTC of 1ms. So I have arranged the prescalers as follow:SynchPrediv = 0x3E7;  AsynchPrediv = 0x21;My ...

STM32F4 and double returning value divided by 10.

Posted on June 16, 2014 at 10:16Hi guys, i recently started to work with orientations and quaternions. Said to do a little math in paralel with my program with a excel spreadsheet. I have the following q`s values double q1=0.99551634; double q2=-0.0...

Bogdan by • Senior
  • 807 Views
  • 5 replies
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Optimising memset() and memcpy() with DMA (STM32F407)

Posted on June 16, 2014 at 03:15Hi All I have a test were the following 6 operations are performed using standard memcpy() and memset() [working with a byte pointer and a loop]. On an STM32F407 at 168MHz with M2M operations in SRAM. 1. clear 2k byte...

hpipon957 by • Associate III
  • 2272 Views
  • 0 replies
  • 1 kudos

STM32F2xx IP Address

Posted on June 11, 2014 at 12:52Hi everyone, I am trying to send and receive TCP packets from  PC to my STM3221G-EVAL Boards however I need to know ip address of my boards.. If someone tell me how to find the IP adress of STM3221G-EVAL    thanks. 

STM32F4 Discovery USB virtual com

Posted on June 15, 2014 at 08:14Where can I found an example about STM32F4 Discovery USB virtual com? When the blue button is pressed I have to send a data to the virtual com.  bye

cchechio by • Associate II
  • 393 Views
  • 1 replies
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How to use the fpu in stm32f4xx ?

Posted on December 13, 2011 at 21:24Hi, How do I exactly use the fpu after enabled it ? How do I for example put 5.5 into it and add 3.25 for example Dooes my software have to do the conversion and just let the fpu cdo the addition , or is the fpu a...

manes6969 by • Associate II
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  • 15 replies
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