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STM32F103C8T6 Custom Board Programming Issue

Posted: Tue Aug 01, 2023 6:28 am
by asking
Hi,

I have developed a custom PCB for our application.

i have replicated everything regarding the programming Jumpers and programming pins as we do in STM Blue Pill through Arduino.

some how i am unable to program the new chip.

Question in my mind is do we need to load bootloader for programming via RX TX Pins A9 A10 ? Pin no. 30 and 31 ?

Or Bare STM32F103C8T6 can directly be programmed using USB TO TTL ?

Please guide. this is 1st time i am handling STM32F103C8T6 Board.

Re: STM32F103C8T6 Custom Board Programming Issue

Posted: Mon Aug 28, 2023 1:35 pm
by fpiSTM
you don't need to load a BL, as the system memory BL is available:
https://www.st.com/resource/en/applicat ... ronics.pdf


So you should be able to flash using PA9/PA10 using USB/TTL. Check all condition are ok.
Pattern 1 Boot0(pin) = 1 and Boot1(pin) = 0