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Forum Posts

stm32f407 - no cortex m sw device

Posted on October 31, 2014 at 14:43Hi, I'm a student starting to develop on my STM32F407 using uVision,I'm struggling on getting my board to link to my pc, I have installed the USB drivers but I still get the error ''no cortex M sw device'' from my ...

Where to report bugs in forum itself?

Posted on November 01, 2014 at 13:57Hi,This forum (seems to be based on MS-sharepoint) has a lot of bugs.For example, I can write new discussion only in Chrome and reply only on IE.When I write a new discussion or reply, I have always to select all ...

Osto by Senior
  • 380 Views
  • 2 replies
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Fluctuations on clkout pin under load

Posted on November 01, 2014 at 10:46I've noticed that the output of the clkout pin is very near the frequency I would expect when a external crystal is used as the pll source, but fluctuates a little as the CPU performs gpio operations. When I confi...

STM32f405RGT6 UART4 and USART3 TX problems

Posted on October 31, 2014 at 12:11I'm at wits end trying to figure out why exactly I can't transmit on UART4 or USART3.The RX works, and i can receive data, however the TX pin is not working at all. Below is my configure code for UART4.void init_us...

tylere by Associate II
  • 1027 Views
  • 5 replies
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Phantom Flash Errors

Posted on October 31, 2014 at 13:53 Hi all. I'm working on a project on an STM32L151CBT6 uC, and getting occasional, unexplained error bits WRPERR and SIZERRset in the flash controller. I set up the flash error interrupt to use the highes...

maroot by Associate
  • 540 Views
  • 2 replies
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Init SRam with Zero for SRamParityChecking

Posted on October 31, 2014 at 14:09 I use STM32F030F4 and want to use SRam-parity-checking. The reference manual hints: ''When enabling the RAM parity check, it is advised to initialize by software the whole RAM memory at the beginni...

klaus2 by Associate II
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  • 10 replies
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F303, nrf24l01 interfacing problems

Posted on October 29, 2014 at 14:19I tried porting someone else's code here:  https://github.com/LonelyWolf/stm32/blob/master/Nrf24l01/nRF24l01.c to F3 (his is for the F1 family).I'm using one of the http://www.addicore.com/2pcs-Addicore-nRF24L01-Wi...

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arolsen by Associate II
  • 1041 Views
  • 5 replies
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