About JLHK01

JLHK01 · 2024-11-29

Has anyone used rbm78bln's STM32duino bootloader, https://github.com/rbm78bln/STM32duino-bootloader_stm32f411-blackpill on a STM32F401RCT6 MCU ?As the bootloader is aimed to support STM32F401xE, what configuration settings in the source code do I nee...

JLHK01 · 2024-10-30

Hi all,Total newbie here.I am seeing this error in Windows 11 Device Manager: "Device Descriptor Request Failed", when I plug the Bluepill to a PC using Bluepill's onboard micro-USB PortAlthough the Bluepill looks like it is running OK with the previ...

JLHK01 · 2024-12-11

How can one ask a question on github once an account is created ?

JLHK01 · 2024-11-26

Have you made any progress on your USB bootloader ?When available, can you put it on github ?

JLHK01 · 2024-11-04

gbm,Thanks for your input.You wrote: "then switch USB on after about 50 ms - this allows for proper re-enumeration after reset or app/bootloader switch."How can one go about doing this, via some code at the beginning of main.c ? If so, can you give ...

JLHK01 · 2024-11-04

Thomas,Thanks for your answer. Is there any CDC example codes (any URLs are great) that I can download and try ?

JLHK01 · 2024-11-01

Thanks Thomas for your reply and further info.Sorry that I am asking newbie/ignorant questions as I am indeed a newbie in microcontroller. When you referring to "firmware" in "PA12 is low no USB firmware can work" and "write a USB firmware", are you ...

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rbm78bln's STM32duino bootloader for STM32F401RCT6

STM32F103C8T6 Bluepill giving Windows "Device Descriptor Request Failed"

Re: rbm78bln's STM32duino bootloader for STM32F401RCT6

Re: STM32F103C8T6 Blue Pill USB Bootloader

Re: STM32F103C8T6 Bluepill giving Windows "Device Descriptor Request Failed"

Re: STM32F103C8T6 Bluepill giving Windows "Device Descriptor Request Failed"

Re: STM32F103C8T6 Bluepill giving Windows "Device Descriptor Request Failed"