feat: implement RNodeInterface for Reticulum with command handling and device initialization

This commit is contained in:
2026-01-01 00:59:39 -06:00
parent 1133a918f1
commit cbf2eaea78

262
pkg/interfaces/rnode.go Normal file
View File

@@ -0,0 +1,262 @@
// SPDX-License-Identifier: 0BSD
package interfaces
import (
"encoding/binary"
"fmt"
"time"
"git.quad4.io/Networks/Reticulum-Go/pkg/common"
"git.quad4.io/Networks/Reticulum-Go/pkg/debug"
)
const (
RNODE_CMD_DATA = 0x00
RNODE_CMD_FREQUENCY = 0x01
RNODE_CMD_BANDWIDTH = 0x02
RNODE_CMD_TXPOWER = 0x03
RNODE_CMD_SF = 0x04
RNODE_CMD_CR = 0x05
RNODE_CMD_RADIO_STATE = 0x06
RNODE_CMD_RADIO_LOCK = 0x07
RNODE_CMD_DETECT = 0x08
RNODE_CMD_LEAVE = 0x0A
RNODE_CMD_ST_ALOCK = 0x0B
RNODE_CMD_LT_ALOCK = 0x0C
RNODE_CMD_READY = 0x0F
RNODE_CMD_STAT_RX = 0x21
RNODE_CMD_STAT_TX = 0x22
RNODE_CMD_STAT_RSSI = 0x23
RNODE_CMD_STAT_SNR = 0x24
RNODE_CMD_FW_VERSION = 0x50
RNODE_CMD_PLATFORM = 0x48
RNODE_CMD_MCU = 0x49
RNODE_DETECT_REQ = 0x73
RNODE_DETECT_RESP = 0x46
RNODE_RSSI_OFFSET = 157
)
// RNodeInterface represents a Reticulum node interface.
type RNodeInterface struct {
Interface
frequency uint32
bandwidth uint32
sf uint8
cr uint8
txPower uint8
callback common.PacketCallback
rFrequency uint32
rBandwidth uint32
rTXPower uint8
rSF uint8
rCR uint8
rState uint8
rDetected bool
rMajVer uint8
rMinVer uint8
interfaceReady bool
packetQueue [][]byte
}
// NewRNodeInterface creates a new RNodeInterface.
func NewRNodeInterface(name string, underlying Interface, freq uint32, bw uint32, sf uint8, cr uint8, txPower uint8) (*RNodeInterface, error) {
ri := &RNodeInterface{
Interface: underlying,
frequency: freq,
bandwidth: bw,
sf: sf,
cr: cr,
txPower: txPower,
}
underlying.SetPacketCallback(ri.handleIncoming)
return ri, nil
}
// SetPacketCallback sets the packet callback for the RNodeInterface.
func (ri *RNodeInterface) SetPacketCallback(cb common.PacketCallback) {
ri.callback = cb
}
func (ri *RNodeInterface) handleIncoming(data []byte, ni common.NetworkInterface) {
if len(data) < 1 {
return
}
cmd := data[0]
payload := data[1:]
switch cmd {
case RNODE_CMD_DATA:
if ri.callback != nil {
ri.callback(payload, ri)
}
case RNODE_CMD_READY:
ri.processQueue()
case RNODE_CMD_DETECT:
if len(payload) >= 1 && payload[0] == RNODE_DETECT_RESP {
ri.rDetected = true
}
case RNODE_CMD_FW_VERSION:
if len(payload) >= 2 {
ri.rMajVer = payload[0]
ri.rMinVer = payload[1]
debug.Log(debug.DEBUG_INFO, "RNode firmware version", "name", ri.GetName(), "version", fmt.Sprintf("%d.%d", ri.rMajVer, ri.rMinVer))
}
case RNODE_CMD_FREQUENCY:
if len(payload) >= 4 {
ri.rFrequency = binary.BigEndian.Uint32(payload)
}
case RNODE_CMD_BANDWIDTH:
if len(payload) >= 4 {
ri.rBandwidth = binary.BigEndian.Uint32(payload)
}
case RNODE_CMD_TXPOWER:
if len(payload) >= 1 {
ri.rTXPower = payload[0]
}
case RNODE_CMD_SF:
if len(payload) >= 1 {
ri.rSF = payload[0]
}
case RNODE_CMD_CR:
if len(payload) >= 1 {
ri.rCR = payload[0]
}
case RNODE_CMD_RADIO_STATE:
if len(payload) >= 1 {
ri.rState = payload[0]
}
case RNODE_CMD_STAT_RSSI:
if len(payload) >= 1 {
rssi := int(payload[0]) - RNODE_RSSI_OFFSET
debug.Log(debug.DEBUG_VERBOSE, "RNode RSSI", "name", ri.GetName(), "rssi", rssi)
}
case RNODE_CMD_STAT_SNR:
if len(payload) >= 1 {
snr := float32(int8(payload[0])) * 0.25
debug.Log(debug.DEBUG_VERBOSE, "RNode SNR", "name", ri.GetName(), "snr", snr)
}
default:
debug.Log(debug.DEBUG_ALL, "RNode received command", "cmd", fmt.Sprintf("0x%02x", cmd), "len", len(payload))
}
}
func (ri *RNodeInterface) processQueue() {
ri.interfaceReady = true
if len(ri.packetQueue) > 0 {
packet := ri.packetQueue[0]
ri.packetQueue = ri.packetQueue[1:]
_ = ri.Send(packet, "")
}
}
// Start initializes the RNodeInterface and configures device parameters.
func (ri *RNodeInterface) Start() error {
err := ri.Interface.Start()
if err != nil {
return err
}
time.Sleep(2 * time.Second)
if err := ri.detect(); err != nil {
return err
}
debug.Log(debug.DEBUG_INFO, "Initializing RNode...", "name", ri.GetName())
if ri.frequency != 0 {
freqBytes := make([]byte, 4)
binary.BigEndian.PutUint32(freqBytes, ri.frequency)
if err := ri.sendRNodeCommand(RNODE_CMD_FREQUENCY, freqBytes); err != nil {
return err
}
}
if ri.bandwidth != 0 {
bwBytes := make([]byte, 4)
binary.BigEndian.PutUint32(bwBytes, ri.bandwidth)
if err := ri.sendRNodeCommand(RNODE_CMD_BANDWIDTH, bwBytes); err != nil {
return err
}
}
if ri.sf != 0 {
if err := ri.sendRNodeCommand(RNODE_CMD_SF, []byte{ri.sf}); err != nil {
return err
}
}
if ri.cr != 0 {
if err := ri.sendRNodeCommand(RNODE_CMD_CR, []byte{ri.cr}); err != nil {
return err
}
}
if ri.txPower != 0 {
if err := ri.sendRNodeCommand(RNODE_CMD_TXPOWER, []byte{ri.txPower}); err != nil {
return err
}
}
if err := ri.sendRNodeCommand(RNODE_CMD_RADIO_STATE, []byte{0x01}); err != nil {
return err
}
ri.interfaceReady = true
debug.Log(debug.DEBUG_INFO, "RNode initialized", "name", ri.GetName())
return nil
}
// detect attempts to detect the RNode device and obtain firmware version.
func (ri *RNodeInterface) detect() error {
detectCmd := []byte{RNODE_DETECT_REQ}
if err := ri.sendRNodeCommand(RNODE_CMD_DETECT, detectCmd); err != nil {
return err
}
start := time.Now()
for !ri.rDetected {
if time.Since(start) > 2*time.Second {
debug.Log(debug.DEBUG_ERROR, "RNode detection timed out", "name", ri.GetName())
break
}
time.Sleep(100 * time.Millisecond)
}
if err := ri.sendRNodeCommand(RNODE_CMD_FW_VERSION, []byte{0x00}); err != nil {
return err
}
return nil
}
// sendRNodeCommand sends a command to the RNode device.
func (ri *RNodeInterface) sendRNodeCommand(cmd byte, data []byte) error {
if kissInterface, ok := ri.Interface.(interface {
SendKISS(byte, []byte) error
}); ok {
return kissInterface.SendKISS(cmd, data)
}
frame := make([]byte, 0, len(data)+1)
frame = append(frame, cmd)
frame = append(frame, data...)
return ri.Interface.Send(frame, "")
}
// Send transmits data using the underlying interface.
func (ri *RNodeInterface) Send(data []byte, addr string) error {
if !ri.interfaceReady {
ri.packetQueue = append(ri.packetQueue, data)
return nil
}
return ri.Interface.Send(data, addr)
}