Sketch uses 8,592 bytes (13%) of program storage space. Maximum is 65,536 bytes.
Global variables use 1,968 bytes of dynamic memory.
Got NACK from device on command 0x43
Can't initiate chip erase!
Failed to erase memory
stm32flash Arduino_STM32_0.9

http://github.com/rogerclarkmelbourne/arduino_stm32

Using Parser : Raw BINARY
Interface serial_posix: 230400 8E1
Version      : 0x22
Option 1     : 0x00
Option 2     : 0x00
Device ID    : 0x0410 (Medium-density)
- RAM        : 20KiB  (512b reserved by bootloader)
- Flash      : 128KiB (sector size: 4x1024)
- Option RAM : 16b
- System RAM : 2KiB
Write to memory
Erasing memory

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