Load program using Micro-B USB

[SPraj.15]

Hello,

I'm using STM32F030 series controller. currently we use JTAG connector to load a program into flash memory, using ST-LINK debugger externally.

Now i want to load a program into flash memory using Micro-B USB in my device without using any external debugger.

Please suggest suitable circuit and possible solution.

Thank you

[Vangelis Fortounas]

Hi

STM32F030 can only be programmed by using USART on pins PA14/PA15 or PA9/PA10 or I2C on pins PB6/PB7 for STM32F030xC devices ,by invoking internal boot loader.

F070 devices have this capability to programmed from USB.

[Tesla DeLorean]

Does AN2606 suggest the ROM supports DFU mode? Check also build size of user based DFU code, and if that and your application code will fit in device. ​

[SPraj.15]

Hello Vangelis,

Thanks for reply.

Can we load program using on-board USB in our device with STM32F030C6 if possible then please share a reference schematic.

Thank you

[Vangelis Fortounas · Accepted solution]

" on-board USB"

The board may have a usb port but the STM32F030C6 definitely not have.

So, between the computer and the device must have an interface like STlink or other SW adapter or a usb to serial adapter.

Btw, what kind of board you use?

[SPraj.15]

Hello Vangelis,

Currently we are using micro-B USB for only battery charging purpose using Supply and ground pins of USB port.

As you said previously, flash memory is programmed using USART pin PA9/PA10.

So if i connect PA9/PA10 pin with the USB pin(D+ & D-), it is possible to load flash using this configuration, please suggest.

ST link will be needed external?

Thank you