Go bindings for Ledger Nano

These are simple go bindings to communicate with custom Ledger Nano apps. This wraps the USB HID layer and handles the ledger specific communication.

CLI Usage

Send bytes to ledger (app 0x80, op 0x02, payload 0xf00d)

make vendor
make install
ledger 8002F00D

API Usage

import "github.com/ethanfrey/ledger"

func PingLedger(msg []byte) ([]byte, error) {
    device, err := ledger.FindLedger()
    if err != nil {
        return nil, err
    }
    return device.Exchange(msg, 0)
}

TODO

• Actually use the timeout parameter
• Build higher level constructs for other apps