About erussell

erussell · 2021-06-17

erussell · 2020-05-02

I am writing a USB MSD bootloader for an STM32L4 processor with 2MB of Flash. The bootloader code will reside in Flash as will the application code. The application code will most likely be larger than 1MB so I’m thinking to have only a single bank. ...

erussell · 2020-04-26

I am using STM32CubeIDE, version 1.2.0. I want to convert the elf file into an srec file with a particular format. I have tried editing the command line in the Post-build steps to read:arm-none-eabi-objcopy.exe -O srec —srec-len=28 —srec-forceS3 “$(B...

erussell · 2019-11-17

This is the second time I’ve asked for help about coding a USB MSD bootloader for the STM32L4 using the STM32L4R9I-EVAL board. I gave up for a while but would really like to figure this out so I can move forward and be able to use the STM32L4. I used...

erussell · 2019-03-29

I am working on a bootloader for the STM32L4 and using the STM32L4R9I-EVAL board. Using STM32CubeMX version 5 I've generated code for a device USB MSD and have included FatFs as the file system. I've used the FatFs routine, f_mkfs() to format the dri...

erussell · 2021-06-17

I can compile if I use the non-generic versions such as powf or powl but not the generic version. But I still don't understand what changed.

erussell · 2020-05-03

Great! Thanks so much for the help!

erussell · 2020-05-03

I am confused by your statement that you can program in the same bank where the code is running. I was interpreting section 3.3.8 of the reference manual to mean that you cannot either program or erase sectors (pages) from one bank while executing co...

erussell · 2020-04-27

Again, thank you both for your suggestions. They reminded me that I have access to IAR's ielftool which I have been using for years for an NXP processor. So I used that and it worked as expected. I do suspect something wrong with the way STM32CubeIDE...

erussell · 2020-04-26

Those really are double dashes.Thank you both! I will try both suggestions.

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I just updated STM32CubeIDE from version 1.5 to 1.6.1. Now some of my math function calls are no longer working - such as pow(). The compile error I receive is : argument 6 of ‘__builtin_tgmath’ is not a function pointer. What has changed?

Linker script for ROM to RAM copying

Convert elf file into an srec file

STM32L4 USB MSD Bootloader can't connect to WIN10.

Trouble having Windows 10 recognize a STM32L4 board configured as a FAT16 disk over USB MSD.

Re: I just updated STM32CubeIDE from version 1.5 to 1.6.1. Now some of my math function calls are no longer working - such as pow(). The compile error I receive is : argument 6 of ‘__builtin_tgmath’ is not a function pointer. What has changed?

Re: Linker script for ROM to RAM copying

Re: Linker script for ROM to RAM copying

Re: Convert elf file into an srec file

Re: Convert elf file into an srec file