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USARTx->DR not getting updated.

Posted on April 25, 2014 at 20:49The original post was too long to process during our migration. Please click on the attachment to read the original post.

anuja by • Associate II
  • 1655 Views
  • 6 replies
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Pausing hardware OC

Posted on April 06, 2015 at 21:06I have a chain of 3 timers with TIMA -> TIMB -> TIMC.When TIMB is triggered it creates a pulse on an output pin via OPM. It then triggers TIMC to do an IC on its counter.What I want to do is to be able to programatic...

dibs by • Associate II
  • 356 Views
  • 0 replies
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SD card CMD16 CRC fail

Posted on April 06, 2015 at 08:55Hello,I am trying to use Cube generated code to SD card interface (1 bit SDIO) initialization starts ok but I always get CRC error at CMD16 at this code://----------------------/* Set block size for card if it is not...

Johanan1 by • Associate II
  • 606 Views
  • 1 replies
  • 0 kudos

DCMI to SRAM via DMA does not work

Posted on October 23, 2014 at 11:23 Hello, i have project where i need to capture image from MT9M001 camera, store it inside SRAM (2MB) and do some complex calculation on image. In order to make it work, i cropped image from 1280x1024 to 102...

STM32F2 Erasing Flash kicks out my Debugger (Raisonance R-Link)

Posted on April 03, 2015 at 08:26Hi thereI have a slightly irritating issue where I am erasing a block of flash memory and while erasing it always kicks my debugger out.  I get a ''Debugger has lost communication message''I am using an STM32F207VCT6...

grant by • Associate III
  • 759 Views
  • 3 replies
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datasheet not user friendly

Posted on April 03, 2015 at 15:09hello, i was happy to know ST was offering very broad controller series line at very cost. i was very disappointed and felt the heat when i started using its datasheets. though it gives bulk of information it's certa...

kumaresh by • Associate II
  • 1241 Views
  • 4 replies
  • 0 kudos

what is mean of Dhrystone ?

Posted on April 03, 2015 at 19:23hi everyone what is mean of 1.25 DMIPS(Dhrystone 2.1) is it DMIPS equal to Dhrystone milion instruction per secod? if yes please explain for me how execute 1.25DMIPS with arm core and pipeline i read a manual of ar...

os1361 by • Associate II
  • 1086 Views
  • 3 replies
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Backup sram. Does the RTC have to also running

Posted on April 04, 2015 at 05:07Hi I want to save a Flag during a reboot on STM32F429IAt Main()I have  uint32_t bt; HAL_Init();  /* Configure the system clock to 180 Mhz */   SystemClock_Config();    __PWR_CLK_ENABLE();   HAL_PWR_EnableBkUpAccess...

brett23 by • Associate II
  • 447 Views
  • 1 replies
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Trouble printing float number normally

Posted on April 03, 2015 at 21:15Attached is my modification of tiny_printf.c where I simply added float printing function (case 'f'). By default, the decimal points is 6. Below are floats I tried to print: Float                                    ...

chenping by • Associate II
  • 1120 Views
  • 3 replies
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