STm32l072 discovery kit Bootloader mode entry issue!!!

[harsh basarikodi]

Posted on September 01, 2017 at 11:08

Hi,

I am using STM32 Lora Discovery kit.

The stm32 controller used is STM32L072CZY6TR.

I want to flash the firmware using the flashloader.

I got this 'STMFlashLoader Demo.exe' from the ST website and installed.

Following are the connection made on the target board to enter in to bootmode for the STM32L072.

CN2 Connector (8th pin)---Boot0 -- Connected to Vcc.

Uart1 selected below are the connection:--CN5 connector ---3rd_pin---Port PA10 --RX1------> connected to Tx of the PC com port.CN1 connector --1st_pin-- Port PA9 ---TX1-------> connected to Rx of the PC com port.

After running the '

STMFlashLoader Demo.exe' and pressing the 'Next' button,I am not able to go to next page.

Error appearing .Please find the attachment.

Please need help regarding this:)..

Note:

Sequence followed:---1)Opened the STMFlasher in PC

                                            2)Powered on the 

Discovery kit with all connections taken care.

                                            3)Pressed the Next button.

[Imen.D]

Posted on September 04, 2017 at 11:42

Hello,

You find attached a newer version of the FlashLoader supporting new STM32L0xx devices.

Please try it and keep me informed if it is working as expected or you faced any issue.

Best Regards

Imen

________________ Attachments : STMFlashLoader Demo_V2.9.0RC4.zip : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HyEk&d=%2Fa%2F0X0000000b7x%2F_3Rai9X5GPcYt0AmNRVaWSrZt.BGMCDTYrCUmrypL6I&asPdf=false

[Tesla DeLorean]

Posted on September 04, 2017 at 13:00

Is there a newer version of DfuSe also? I don't think 3.0.5 works with this part either. 

[harsh basarikodi]

Posted on September 11, 2017 at 14:10

Hi Imen,

Thank you for the reply.I was able to go to the bootmode and I am able to see the next window after pressing the 'Next' button.I have followed the below steps on the STML072 discovery board.Powered the board using the USB connector(Connected to CN7).Boot0 pin is connected to Vcc.Executed the Boot application.Selected the port detected by the PC for the board.Reseteing the board.Pressed the Next button on the Application window.I was able to go to the next window.This worked with older application( 2.8) and newer version shared by you.(2.9).

I assume that on board STM32F103CBT6 IC is acting as USB to serial converter which is interfaced to STM32L072(LRA Module ).

If i use and power the board using the CN11 connector, board is getting powered up with LED7 indication,but LORA module is not running!!.I connected the 3 AAA batteries and saw only LED7 indication but the LoRA module is not running.

I verfied with schematics, any settings are not mentioned to power up LORA module!.

Please let me know ,any missing settings :(. I have few question:Can I go to boot mode by isolating the STM32F103CBT6 IC?If yes please let me know any setting to be done!

[Tesla DeLorean]

Posted on September 11, 2017 at 16:19

The STM32F103CBT6 implements the ST-LINK w/VCP functionality.

You could remove the CN8 jumpers, but the AAA batteries should just be powering the Murata side of the circuit.

Debug your code, use the USART to output debug/diagnostic info.