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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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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
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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
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Httpserver in STM32f2xx

Posted on June 15, 2014 at 20:25Hi everyone,Someone explain to me the steps to run  the HTTPServer standalone on STM3221G EVAL-Boards and more precisely how to send the file at the server ... thanks.

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