About JPark.20

JPark.20 · 2021-09-23

hi! i'm using stm32L4r9Ai.i programmed user dfu boot (from 0x08000000 ~ 0x0800C000).read, write, and erase operations are also performed normally in cubeprogrammer.one problem is the speed at which the cube programmer connects to the device in the...

JPark.20 · 2021-08-11

I programmed User DFU Boot loader like this,uint16_t MEM_If_Init_FS(void){ /* USER CODE BEGIN 0 */ HAL_FLASH_Unlock(); __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR | FLASH_FLAG_PGSERR); return (USBD...

JPark.20 · 2021-04-20

HI, STIm trying to fw update using MFC Tool, STM32_Programmer_CLI.exe.first, i checked that the fw download operation was completed using Terminal.so, I makeed the mfc tool in the way the terminal works in the background and checked the fw download...

JPark.20 · 2021-04-12

Hi ST.I'm using STM32 L4P5 as a Master in I2C.slave device is slow to write data, so I did the slave device do clock stretching for a moment.Is there any enable related to clock stretching on L4P5?If so, what's the way to enable it?thank you

JPark.20 · 2021-04-05

I used HAL_I2C_MASTER_Transmit/ReceiveThe transmission function put a delay using the for statement as shown below.HAL_StatusTypeDef HAL_I2C_Master_Transmit(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Time...

JPark.20 · 2021-09-27

Interrupt priority was set higher usb than systick. So, the tick did not increase, and remained in the hal_delay function. I was thinking that the function was not called. I hope no one makes the same mistake as me!

JPark.20 · 2021-04-21

yes! im fool!!!!!!!thanks you Pavel!!!

JPark.20 · 2021-04-13

Thank you Danish.I checked and saw that clock-stretching is working using oscilloscope.As you said, It seems that MCU handles clock-stretching automatically.I found several Reference Manual, and I was checking if there was a bit for clock-stretchi...

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can user dfu boot connection speed be as fast as the system boot?

function MEM_If_Erase_FS, MEM_If_Write_FS not called.

Error: failed to download Segment[0]

How to enable I2C Clock stretching

I want to make a delay between the slave address and the data in i2c communication.

Re: function MEM_If_Erase_FS, MEM_If_Write_FS not called.

Re: Error: failed to download Segment[0]

Re: How to enable I2C Clock stretching