add more commands to README

firmware/rust1/README.txt

@@ -4,3 +4,17 @@ cargo install probe-rs-debugger
 # https://github.com/raspberrypi/picoprobe
 # https://datasheets.raspberrypi.com/pico/getting-started-with-pico.pdf
 cargo run --bin blinky
+
+
+more useful commands:
+nix develop
+cargo run --bin heizung
+./build.sh
+picotool info build/heizung-release.uf2
+picotool info -a  # with target in bootsel mode
+python rtumaster_pymodbus.py
+python download_firmware_via_modbus.py
+
+~/.cargo/bin/probe-rs-cli gdb --chip rp2040
+gdb ./target/thumbv6m-none-eabi/debug/heizung
+  target remote localhost:1337