RPC

Build and Flash

Instructions are the same as flashing blinky but passing in a different .elf.

1. Run the compile with pw watch out or ninja -C out.

2. Flash rpc.elf.

   Teensy

   arduino_unit_test_runner --config out/arduino_debug/gen/arduino_builder_config.json --upload-tool teensyloader --verbose --flash-only out/arduino_debug/obj/workshop/03-rpc/bin/rpc.elf
   

   stm32f429i_disc1

   openocd -s ${PW_PIGWEED_CIPD_INSTALL_DIR}/share/openocd/scripts -f ${PW_ROOT}/targets/stm32f429i_disc1/py/stm32f429i_disc1_utils/openocd_stm32f4xx.cfg -c "program out/arduino_debug/obj/workshop/03-rpc/bin/rpc.elf reset exit"
   

View HDLC Encoded Log Output

1. Optional: Create / update the log token database. This will be automatically updated when compiling.

   python -m pw_tokenizer.database create --force --database workshop/03-rpc/tokenizer_database.csv out/arduino_debug/obj/workshop/03-rpc/bin/rpc.elf
   

2. Start the rpc_console that saves log output to a file.

   python -m pw_hdlc_lite.rpc_console -o logfile.txt -d /dev/ttyACM0 third_party/pigweed/pw_rpc/pw_rpc_protos/echo.proto workshop/03-rpc/remoticon_proto/remoticon.proto
   

   This will launch an interactive ipython console where you can send RPCs. Try rpcs.pw.rpc.EchoService.Echo(msg="hello!"). IPython provides nice tab completion for the RPC interfaces as well.

3. Tail the log output.

   python -m pw_tokenizer.detokenize base64 workshop/03-rpc/tokenizer_database.csv -i logfile.txt --follow