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F401 Enabling ROP?

Posted on May 14, 2018 at 20:27Hi all,I'm trying to get ROP enabled by my bootloader.This function is run first up by main().I'm finding that it get stuck in a loop, as ROP never seems to become enabled (always reads back as being set at level 0).An...

mwp by Senior
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SDMMC trace length mismatch

Posted on May 11, 2018 at 01:27 Hi ThereI was looking at AN4661, pg 45 where the signal routing guidelines for SDMMC is given. It has the below bullet points when it comes to skew  The skew being introduced into the clock system by unequal trac...

STM32 Leave DFU mode command

Posted on January 23, 2017 at 21:32Hi, I have a question regarding STM32L Leave DFU mode command. I can enter in to built in bootloader from startup code. I am initialising some GPIO pins in startup (assembly code) and they maintain the status after...

Problem in STM32CubeF4_21 usb mass storage sample

Posted on May 15, 2018 at 12:26HiI use mass storage sample from STM32CubeF4 ver 1.21 pakageWhen I format a partition with a NTFS system file and copy a large file to it, if device resets during the copy, the partition is corrupted and requests forma...