Arduino for STM32

Following up on GonzoG's recommendation, I ran an experiment. I placed a 10K pulldown resistor at A10. I can now use my finger to press the BOOT0 and RST buttons and reliably boot the the DFU bootloader.

GonzoG

I'm glad that you found a solution that works for you. I tested it, and it does not work for me. I suspect that there may be variability in the mcu's that cause them to respond differently to the various suggested solutions.

In case anyone else is still looking for answers, I can verify that MrHazelnut's solution works. When I saw his suggestion not to use your fingers on the BOOT and RESET buttons, I thought bull***t!. I was WRONG!. Use a couple of pens as MrHazelnut suggested: it works. I don't know whether resistive ...

fpiSTM, thank you; that seems so simple. I feel foolish for not having already found the API documentation in the wiki.

I need to map peripheral I/O to pins other than those in variant.h. Specifically, I am using a Discovery F407 board, and i need to map SDA and SCL to PB9 and PB6 to interface with existing hardware. Variant.h has these at:

// I2C Definitions
#define PIN_WIRE_SDA PB7
#define PIN_WIRE_SCL PB8

I ...

fpiSTM, perfect! That is just what I was looking for, thanks.

I am looking for a convenient (lazy) way to determine how the Arduino IDE maps STM32 peripherals when it compiles a program. I am aware of the PeripheralPins.c file that is used to map generic functions (I2C communications e.g.) to specific pins for a selected board. And, working backwards through ...