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@ledgerhq/hw-transport-node-speculos
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Readme
A transport for https://github.com/LedgerHQ/speculos Nano simulator.
GitHub, Ledger Devs Discord, Developer Portal
import SpeculosTransport from "@ledgerhq/hw-transport-node-speculos";
const apduPort = 40000;
async function exampleSimple() {
const transport = await SpeculosTransport.open({ apduPort });
const res = await transport.send(0xE0, 0x01, 0x00, 0x00);
}
async function exampleAdvanced() {
const transport = await SpeculosTransport.open({ apduPort });
setTimeout(() => {
// in 1s i'll click on right button and release
transport.button("Rr");
}, 1000); // 1s is a tradeoff here. In future, we need to be able to "await & expect a text" but that will need a feature from speculos to notify us when text changes.
// derivate btc address and ask for device verification
const res = await transport.send(0xE0, 0x40, 0x01, 0x00, Buffer.from("058000002c8000000080000000000000000000000f"));
}
It's working with SPECULOS_APDU_PORT and SPECULOS_HOST envs.
SPECULOS_APDU_PORT=40000 ledger-live sync -c btc
# starts an http proxy with speculos (http proxy that works with LLD and LLM)
SPECULOS_APDU_PORT=40000 ledger-live proxy
To make it work with Docker, I had to expose some port and do this:
docker run -it -p 40000:40000 -v "$(pwd)"/apps:/speculos/apps speculos /bin/bash
$ pipenv shell
$ ./speculos.py -m nanos ./apps/btc.elf --sdk 1.6 --seed "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about" --display headless --apdu-port 40000
Type: {apduPort: number, buttonPort: number?, automationPort: number?, host: string?}
Extends Transport
Speculos TCP transport implementation
apduSocket
net.Socket opts
SpeculosTransportOpts import SpeculosTransport from "@ledgerhq/hw-transport-node-speculos";
const transport = await SpeculosTransport.open({ apduPort });
const res = await transport.send(0xE0, 0x01, 0, 0);
Send a speculos button command typically "Ll" would press and release the left button typically "Rr" would press and release the right button
command
any Returns Promise<void>
Returns Promise<SpeculosTransport>
FAQs
Ledger Hardware Wallet communication layer with speculos Nano simulator
The npm package @ledgerhq/hw-transport-node-speculos receives a total of 336 weekly downloads. As such, @ledgerhq/hw-transport-node-speculos popularity was classified as not popular.
We found that @ledgerhq/hw-transport-node-speculos demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 7 open source maintainers collaborating on the project.
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