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powerpods/goTool/README.md
simon 6cdca4f3ad Add ESP-NOW heartbeat, client timeout, and slave reconnect. 
Slaves send HEARTBEAT every 1s; the master marks clients inactive after
3s without traffic and reactivates on reconnect. CLIENT_INFO reports
last_ping as milliseconds since the last packet, not uptime.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-05-18 22:39:10 +02:00

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goTool

Host-side UART client for the Powerpod master ESP.

Full system documentation (roles, ESP-NOW, framing, protobuf): ../main/README.md.

Usage

cd goTool
go mod tidy
go run . -port /dev/ttyUSB0 version
go run . -port /dev/ttyUSB0 clients
Flag Default Description
-port (required) Serial port on master UART (GPIO2/3 adapter)
-baud 921600 Must match firmware UART_BAUD_RATE

Commands

Command UART payload Description
version 0x03 Prints version and git_hash from firmware
clients 0x04 Lists slaves registered on the master via ESP-NOW

clients requires slaves to have responded to master discover broadcasts first.

Example output:

clients (2):
  [0] id=42 mac=aabbccddeeff ver=1 available=true used=false last_ping=250 last_success_ping=250

Regenerate protobuf

protoc --go_out=./pb --go_opt=paths=source_relative \
  --go_opt=Muart_messages.proto=powerpod/gotool/pb \
  -I ../main/proto ../main/proto/uart_messages.proto