ardupyrpc 0.1.0

Python client for an Arduino RPC bridge using MsgPack over serial.

pyrpc

A tiny RPC bridge between Arduino and Python using MsgPack over serial.

It lets you expose C++ functions on an Arduino board and call them directly from Python, with automatic (de)serialization of basic types, containers, and structs.

Arduino side

1. Install the Arduino MsgPack library (e.g. via Library Manager).
2. Include the RPC header and register your functions:

#include <pyrpc.h>

double sum(int i, float d) {
	return i + d;
}

void setup() {
	Serial.begin(115200);

	pyrpc::begin();  

	pyrpc::register_rpc(
		"sum",
		sum,
		F("@brief sum two numbers @return double @arg i integer @arg d float")
	);
}

void loop() {
	pyrpc::process();  // handle incoming RPC calls
}

Upload this sketch to your Arduino (baudrate must match the Python side).

Python side

Install the Python package:

pip install pyrpc

Call your Arduino procedures from Python:

from pyrpc import Rpc

rpc = Rpc("/dev/ttyACM0", baudrate=115200)

print(rpc.help)  # shows all available remote procedures

result = rpc.call("sum", 3, 1.5)
print("sum result:", result)

rpc.close()

A more complete example is available in the examples/ folder.