USB is not working on stm32f103RCT6. about stm32f1xx HOT 4 CLOSED

but the USB still doesn't work, I'm not sure what the reason is.

USB is sensitive to clock setup, it has to be exact or it fails. Could be due to the STM32F103xE symbol not beeing defined? See the attached Web Builder .ini file.

what are the roles of these two files?

It tells the linker where to place/find the different elements (code, vector table, static data, ram...) in memory.

If you flash a Web Builder image does that work? Try with "Mach3 USB breakout (BSMCE04U)". Here is the .ini used for such a build:

job.zip

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1. Does the board have a bootloader you do not want to overwrite? If not you do not want to relocate the vector table. If it has one is the offset correct? And have you modified the loader script to match it?

2. Does the main oscillator crystal frequency match the build? IIRC the default is 8 MHz.

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My crystal oscillator is 8MHZ.

I commented out the following code:

-D VECT_TAB_OFFSET=0x7000 
-Wl,--defsym=LD_VECT_TAB_OFFSET=0x7000, 

but the USB still doesn't work, I'm not sure what the reason is.

STM32F103RCTX_FLASH.ld and STM32F103RCTX_BL28K_FLASH.ld, what are the roles of these two files? There were no such files in the previous versions. I wanted to use the .ld file provided by platformio IDE, so I deleted these two files, and the program encountered an error.

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problem solved. job.zip works fine.

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