Readd connect-under-reset-flag

Author: Sh3Rm4n

.cargo/config.toml

@@ -10,7 +10,7 @@
 [target.thumbv7em-none-eabihf]
 # runner = "arm-none-eabi-gdb"
 # Chip can be set via `--chip STM32F303VCTx` or `export PROBE_RUN_CHIP=STM32F303VCTx`
-runner = "probe-run --chip STM32F303VCTx"
+runner = "probe-run --chip STM32F303VCTx --connect-under-reset"
 rustflags = [
   "-C", "link-arg=--nmagic",
   "-C", "link-arg=-Tlink.x",