Attaching the debugger on STM32F411RE Nucleo times out

[sgjesse]

This is with version 0.5.0-dev.1.5

Flash blinky.dart on STM32F411RE Nucleo (after updating internal/.dartino-settings).

$ dartino flash --debugging-mode --no-wait samples/stm32f411re-nucleo/blinky.dart
Using template settings file '/tmp/dartino-sdk/internal/.dartino-settings'
Done building image: /tmp/dartino-sdk/samples/stm32f411re-nucleo/blinky.bin
Flashing image: /tmp/dartino-sdk/samples/stm32f411re-nucleo/blinky.bin
Done flashing image: /tmp/dartino-sdk/samples/stm32f411re-nucleo/blinky.bin

The LED starts flashing

Try to attach debugger

$ dartino debug samples/stm32f411re-nucleo/blinky.dart on tty /dev/ttyACM0
Using template settings file '/tmp/dartino-sdk/internal/.dartino-settings'
Closing tty-connection
Handshake with VM on /dev/ttyACM0 timed out.