Use mqtt to publish chunks to be interpreted (and optionally publish return value on another topic).
Requires esptool and nodemcu-tool.
Modify Makefile with your serial port
Modify init.lua with your MQTT host.
make flash to flash nodemcu
make init to upload the lua init script
make term to start a lua terminal
Send a mqtt message to be interpreted, e.g.
mosquitto_pub -h <host> -t /lua-interpreter -m '{"chunk": "gpio.mode(1, gpio.OUTPUT) gpio.write(1, gpio.HIGH)"}'
which will configure pin 1 in output mode and set it high.
If a reply is desired, you can pass a "reply-to" key in the JSON payload, e.g.
mosquitto_sub -h <host> -t /reply
and then in another shell
mosquitto_pub -h <host> -t /lua-interpreter -m '{"chunk": "return gpio.read(1)", "reply-to": "/reply"}'
which will read pin 1 (should be 1 now) and we receive that response on the /reply topic.