LeafLabs Garden

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1. 

   SaraFarina
   Member

   Hi,

   I have my own board, but I would like to use LeafLabs libraries. I need the bootloader in my cortex stm32f103 (also i have Windows XP, so i will need DFU and serial drivers). For that, I need to change some ports and pins (LED, button,...), but the question is both BOOT0 and BOOT1 are tied to ground and I think the bootloader available in your libraries conects BOOT0 to a button to start all the process.
   Could I use a normal button for initiate bootloader or should I need BOOT0 high level at some point??
   I have to change LED and button to make it work, but do i have to change anything else??

   Thanks!!!

   PS:sorry but i dont know that much about hardware and firmware...

   Posted 5 years ago #
2. 

   gbulmer
   Moderator

   On Maple BOOT1 is tied to ground, but BOOT0 can be pulled up using a button called BUT, so it can be high or low.

   Booting is triggered by the host PC or pressing the RESET button.

   Posted 5 years ago #
3. 

   SaraFarina
   Member

   ok!!
   and now, to flash it on the stm32 do I need a JTAG and OpenOCD or can I do it through serial port (USB)??

   Posted 5 years ago #
4. 

   gbulmer
   Moderator

   1. All STM32F103's have a manufactured in 'bootloader' in 'ROM', which can not be overwritten. It will bootload over USART1, but not USB. I have used an FTDI USB to 3V3 serial cable to do this. If you have an Arduino, you could use that too.

   2. You can also program the flash of any STM32F using JTAG and a suitable program, e.g. OpenOCD.

   Once the Maple bootloader has been installed, then the STM32F103 can self program over USB.

   STM32F105's and STM32F107's can bootload from USB.

   Posted 5 years ago #

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