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STM32L496QEI oscillator frequency error

Posted on August 30, 2017 at 21:03I'm debugging a new board which uses the STM32L496QEI6 and found that the HSI and MSI clocks are running about 8% too slow which is way outside the specification. (This error shows up both on both the UART pins and ...

STemWin Alpha Blend Transparent Child to Opaque Parent

Posted on August 30, 2017 at 23:09Hi,I'd like to know if it is possible to configure alpha blending such that the transparent pixels of a child rectangle are blended with the frame buffer contents created by the parent.  It appears the only way to b...

Resolved! ST-LINK Utilities V4.0.0 save broken

Posted on October 29, 2016 at 17:48having a frustrating time with the new utilities, using an STM32F103RBT6 repeatedly getting a ''fail to save bin/hex'' type error when using ''Save As''. Didn't seem dependent on file name, and file name didn't cla...

Release notes not published for STM32CubeL4 HAL

Posted on August 30, 2017 at 15:36Where are the release notes for the STM32CubeL4 HAL?  There are several releases, and I can't find documentation on any releases.  I'm interested in the release notes from version 1.7.0 to 1.8.0 and patch 1.8.1.If r...

STM32F7 maximum toogle GPIO speed question

Posted on August 30, 2017 at 15:28Hi to all,Am working with a a custom board with a STM32F767BIT6 working at the highest speed possible. I am trying the simplest test on a GPIOH pin 8 :    for(;;){          {              GPIOH->BSRR = 0x00000100U; ...

stm32f103 copy and paste program error

Posted on August 29, 2017 at 16:36HiWhen I copy and paste this program ( the rirst one with 285 lines)http://embeddedsystemengineering.blogspot.ca/2016/06/arm-cortex-m3-stm32f103-project-dsp.htmlI have an error:fatal error: stm32f10x.h: No such file...

RTC Accuracy - STM32L475

Posted on August 29, 2017 at 14:43According to pre-fixed parameters when setting up the RTC (PREDIV_A=127m PREDIV_S=255) and in accordance with AN4759, if I use a reccomended 32.768KHz (LSE) crystal, I should have a 512Hz signal at PC13 pin (STM32L4...

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