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2024-10-07

Hi , I am using an M95P08-I SPI EEPROM . And I can now write/erase/program the EEPROM successfully. But I tried reading the Safety register format (RDCR) and found that the Power-up flag (PUF) bit and the Erase flag (ERF) bit were 1.Aften tried usin...

2019-08-01

Excuse me.Can I change COM Port of name in keil C ?if there is no way , how to change it name ?

2019-05-22

I have bootloader initial position 0x08000000 and IAP 0x08004000 now.First, I form bootloader jump to IAP code and it works fine.But my jump back to bootloader will stop.Maybe I have a lot of IAP function enable.So I want to ask, besides __disable...

2019-05-16

Hi all,I am now experiencing problems with USB stuck.I am using an STM32L433CC MCU.There are two blocks in Flash, one is Bootloader and the other is API code.Mainly at the beginning I entered the bootloader and can clearly know that USB can work.Also...

2019-05-09

My board is STM32L433CCBut I have a question, I can plug and reconnect to the PC in USB, but I think it is too much trouble and take time.Is there any way to reconnect without pulling the USB cable PC?

2019-08-01

Path: C:\Program Files (x86)\STMicroelectronics\Software\Virtual comport driver\Win7I found .INF file and change DESCRIPTION define .But I renewed to install , result it failureIt seem have Anti-write mechanism.How can I solve this problem?

2019-05-23

I refer to the URL provided by Alex: How to write a bootloaderBefore the jump,first you must Disable all enabled interrupts in NVIC. code : NVIC->ICER[ 0~7 ] = 0xFFFFFFFF ;After Disable SysTick and clear its exception pending bit, if it is used in...

2019-05-22

Thank you, the problem has been solved.

2019-05-09

I found that there are newer issues, old style I re-Deinit(), in init(), I went into debug modeFound his card USB_DevInit() this function inside,Mainly he has to doUSBx->CNTR = USB_CNTR_FRES;USBx->CNTR = 0;When doing CNTR = 0, the error occurs direct...

2019-05-09

I now have USB_DP and USB_DM have a design mini usb headBut my VDDUSB also has 3.3VIf I internal pull up, will he still continue to operate?

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EEPROM (M95P08-I) Safety register

How to change USB COM Port of name ?

How to use stm32l4 from IAP jump to bootloader

STM32L4 CDC handler

How does USB reconnect with the PC without pull USB line?

Re: How to change USB COM Port of name ?

Re: How to use stm32l4 from IAP jump to bootloader

Re: How to use stm32l4 from IAP jump to bootloader

Re: How does USB reconnect with the PC without pull USB line?

Re: How does USB reconnect with the PC without pull USB line?