add qemu setting for thumbv6m-none-eabi.
# uncomment this to make `cargo run` execute programs on QEMU
runner = "qemu-system-arm -cpu cortex-m3 -machine lm3s6965evb -nographic -semihosting-config enable=on,target=native -kernel"
+[target.thumbv6m-none-eabi]
+# uncomment this to make `cargo run` execute programs on QEMU
+# For now, we use cortex-m3 instead of cortex-m0 which are not supported by QEMU
+runner = "qemu-system-arm -cpu cortex-m3 -machine lm3s6965evb -nographic -semihosting-config enable=on,target=native -kernel"
+
[target.'cfg(all(target_arch = "arm", target_os = "none"))']
# uncomment ONE of these three option to make `cargo run` start a GDB session
# which option to pick depends on your system
