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https://github.com/meshtastic/Meshtastic-Android.git
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move to geeksville/mesh
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geeksville
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commit
3551eedb8a
15 changed files with 30 additions and 32 deletions
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package com.geeksville.meshutil
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import android.bluetooth.*
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import android.bluetooth.le.*
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import android.content.Context
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import android.content.Intent
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import android.os.Handler
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import android.os.ParcelUuid
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import android.os.SystemClock
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import android.widget.Toast
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import androidx.appcompat.app.AppCompatActivity
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import androidx.core.app.JobIntentService
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import com.geeksville.android.Logging
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import java.io.InputStream
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import java.util.*
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/**
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* typical flow
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*
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* startScan
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* startUpdate
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* sendNextBlock
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* finishUpdate
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*
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* stopScan
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*
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* FIXME - if we don't find a device stop our scan
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* FIXME - broadcast when we found devices, made progress sending blocks or when the update is complete
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* FIXME - make the user decide to start an update on a particular device
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*/
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class SoftwareUpdateService : JobIntentService(), Logging {
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private val bluetoothAdapter: BluetoothAdapter by lazy(LazyThreadSafetyMode.NONE) {
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val bluetoothManager = getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager
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bluetoothManager.adapter!!
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}
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fun startUpdate() {
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firmwareStream = assets.open("firmware.bin")
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// Start the update by writing the # of bytes in the image
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val numBytes = firmwareStream.available()
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logAssert(totalSizeDesc.setValue(numBytes, BluetoothGattCharacteristic.FORMAT_UINT32, 0))
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logAssert(updateGatt.writeCharacteristic(totalSizeDesc))
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}
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// Send the next block of our file to the device
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fun sendNextBlock() {
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if (firmwareStream.available() > 0) {
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var blockSize = 512
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if (blockSize > firmwareStream.available())
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blockSize = firmwareStream.available()
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val buffer = ByteArray(blockSize)
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// slightly expensive to keep reallocing this buffer, but whatever
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logAssert(firmwareStream.read(buffer) == blockSize)
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// updateGatt.beginReliableWrite()
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dataDesc.value = buffer
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logAssert(updateGatt.writeCharacteristic(dataDesc))
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} else {
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logAssert(false) // fixme
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}
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}
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private val scanCallback = object : ScanCallback() {
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override fun onScanFailed(errorCode: Int) {
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throw NotImplementedError()
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}
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override fun onBatchScanResults(results: MutableList<ScanResult>?) {
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throw NotImplementedError()
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}
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// For each device that appears in our scan, ask for its GATT, when the gatt arrives,
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// check if it is an eligable device and store it in our list of candidates
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// if that device later disconnects remove it as a candidate
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override fun onScanResult(callbackType: Int, result: ScanResult) {
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// We don't need any more results now
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bluetoothAdapter.bluetoothLeScanner.stopScan(this)
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lateinit var bluetoothGatt: BluetoothGatt // late init so we can declare our callback and use this there
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//var connectionState = STATE_DISCONNECTED
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// Various callback methods defined by the BLE API.
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val gattCallback = object : BluetoothGattCallback() {
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override fun onConnectionStateChange(
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gatt: BluetoothGatt,
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status: Int,
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newState: Int
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) {
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info("new bluetooth connection state $newState")
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//val intentAction: String
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when (newState) {
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BluetoothProfile.STATE_CONNECTED -> {
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//intentAction = ACTION_GATT_CONNECTED
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//connectionState = STATE_CONNECTED
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// broadcastUpdate(intentAction)
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logAssert(bluetoothGatt.discoverServices())
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}
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BluetoothProfile.STATE_DISCONNECTED -> {
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//intentAction = ACTION_GATT_DISCONNECTED
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//connectionState = STATE_DISCONNECTED
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// broadcastUpdate(intentAction)
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}
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}
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}
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// New services discovered
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override fun onServicesDiscovered(gatt: BluetoothGatt, status: Int) {
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logAssert(status == BluetoothGatt.GATT_SUCCESS)
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// broadcastUpdate(ACTION_GATT_SERVICES_DISCOVERED)
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val service = gatt.services.find { it.uuid == SW_UPDATE_UUID }
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if (service != null) {
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// FIXME instead of slamming in the target device here, instead make it a param for startUpdate
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updateService = service
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totalSizeDesc = service.getCharacteristic(SW_UPDATE_TOTALSIZE_CHARACTER)
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dataDesc = service.getCharacteristic(SW_UPDATE_DATA_CHARACTER)
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crc32Desc = service.getCharacteristic(SW_UPDATE_CRC32_CHARACTER)
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updateResultDesc = service.getCharacteristic(SW_UPDATE_RESULT_CHARACTER)
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// FIXME instead of keeping the connection open, make start update just reconnect (needed once user can choose devices)
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updateGatt = bluetoothGatt
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enqueueWork(this@SoftwareUpdateService, startUpdateIntent)
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}
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}
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// Result of a characteristic read operation
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override fun onCharacteristicRead(
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gatt: BluetoothGatt,
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characteristic: BluetoothGattCharacteristic,
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status: Int
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) {
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logAssert(status == BluetoothGatt.GATT_SUCCESS)
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if (characteristic == totalSizeDesc) {
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// Our read of this has completed, either fail or continue updating
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val readvalue =
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characteristic.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT32, 0)
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logAssert(readvalue != 0) // FIXME - handle this case
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enqueueWork(this@SoftwareUpdateService, sendNextBlockIntent)
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}
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// broadcastUpdate(ACTION_DATA_AVAILABLE, characteristic)
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}
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override fun onCharacteristicWrite(
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gatt: BluetoothGatt?,
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characteristic: BluetoothGattCharacteristic?,
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status: Int
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) {
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logAssert(status == BluetoothGatt.GATT_SUCCESS)
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if(characteristic == totalSizeDesc) {
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// Our write completed, queue up a readback
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logAssert(updateGatt.readCharacteristic(totalSizeDesc))
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} else if (characteristic == dataDesc) {
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enqueueWork(this@SoftwareUpdateService, sendNextBlockIntent)
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}
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}
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}
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bluetoothGatt =
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result.device.connectGatt(this@SoftwareUpdateService.applicationContext, true, gattCallback)!!
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toast("FISH " + bluetoothGatt)
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// too early to do this here
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// logAssert(bluetoothGatt.discoverServices())
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}
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}
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private fun scanLeDevice(enable: Boolean) {
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when (enable) {
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true -> {
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// Stops scanning after a pre-defined scan period.
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/* handler.postDelayed({
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mScanning = false
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bluetoothAdapter.stopLeScan(leScanCallback)
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}, SCAN_PERIOD)
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mScanning = true */
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val scanner = bluetoothAdapter.bluetoothLeScanner
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// filter and only accept devices that have a sw update service
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val filter = ScanFilter.Builder().setServiceUuid(ParcelUuid(SW_UPDATE_UUID)).build()
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/* ScanSettings.CALLBACK_TYPE_FIRST_MATCH seems to trigger a bug returning an error of
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SCAN_FAILED_OUT_OF_HARDWARE_RESOURCES (error #5)
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*/
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val settings =
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ScanSettings.Builder().setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY).
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// setMatchMode(ScanSettings.MATCH_NUM_ONE_ADVERTISEMENT).
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// setCallbackType(ScanSettings.CALLBACK_TYPE_FIRST_MATCH).
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build()
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scanner.startScan(listOf(filter), settings, scanCallback)
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}
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else -> {
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// mScanning = false
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// bluetoothAdapter.stopLeScan(leScanCallback)
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}
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}
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}
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override fun onHandleWork(intent: Intent) { // We have received work to do. The system or framework is already
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// holding a wake lock for us at this point, so we can just go.
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info("Executing work: $intent")
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var label = intent.getStringExtra("label")
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if (label == null) {
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label = intent.toString()
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}
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toast("Executing: $label")
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when (intent.action) {
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scanDevicesIntent.action -> scanLeDevice(true)
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startUpdateIntent.action -> startUpdate()
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sendNextBlockIntent.action -> sendNextBlock()
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else -> logAssert(false)
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}
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info(
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"Completed service @ " + SystemClock.elapsedRealtime()
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)
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}
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override fun onDestroy() {
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super.onDestroy()
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toast("All work complete")
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}
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val mHandler = Handler()
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// Helper for showing tests
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fun toast(text: CharSequence?) {
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mHandler.post {
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Toast.makeText(this@SoftwareUpdateService, text, Toast.LENGTH_SHORT).show()
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}
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}
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companion object {
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/**
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* Unique job ID for this service. Must be the same for all work.
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*/
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const val JOB_ID = 1000
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val scanDevicesIntent = Intent("com.geeksville.meshutil.SCAN_DEVICES")
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val startUpdateIntent = Intent("com.geeksville.meshutil.START_UPDATE")
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private val sendNextBlockIntent = Intent("com.geeksville.meshutil.SEND_NEXT_BLOCK")
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private val finishUpdateIntent = Intent("com.geeksville.meshutil.FINISH_UPDATE")
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private const val SCAN_PERIOD: Long = 10000
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//const val ACTION_GATT_CONNECTED = "com.example.bluetooth.le.ACTION_GATT_CONNECTED"
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//const val ACTION_GATT_DISCONNECTED = "com.example.bluetooth.le.ACTION_GATT_DISCONNECTED"
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private val TAG =
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MainActivity::class.java.simpleName // FIXME - use my logging class instead
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private val SW_UPDATE_UUID = UUID.fromString("cb0b9a0b-a84c-4c0d-bdbb-442e3144ee30")
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private val SW_UPDATE_TOTALSIZE_CHARACTER =
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UUID.fromString("e74dd9c0-a301-4a6f-95a1-f0e1dbea8e1e") // write|read total image size, 32 bit, write this first, then read read back to see if it was acceptable (0 mean not accepted)
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private val SW_UPDATE_DATA_CHARACTER =
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UUID.fromString("e272ebac-d463-4b98-bc84-5cc1a39ee517") // write data, variable sized, recommended 512 bytes, write one for each block of file
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private val SW_UPDATE_CRC32_CHARACTER =
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UUID.fromString("4826129c-c22a-43a3-b066-ce8f0d5bacc6") // write crc32, write last - writing this will complete the OTA operation, now you can read result
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private val SW_UPDATE_RESULT_CHARACTER =
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UUID.fromString("5e134862-7411-4424-ac4a-210937432c77") // read|notify result code, readable but will notify when the OTA operation completes
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// FIXME - this is state that really more properly goes with the serice instance, but
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// it can go away if our work queue gets empty. So we keep it here instead. Not sure
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// if there is a better approach?
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lateinit var updateGatt: BluetoothGatt // the gatt api used to talk to our device
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lateinit var updateService: BluetoothGattService // The service we are currently talking to to do the update
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lateinit var totalSizeDesc: BluetoothGattCharacteristic
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lateinit var dataDesc: BluetoothGattCharacteristic
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lateinit var crc32Desc: BluetoothGattCharacteristic
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lateinit var updateResultDesc: BluetoothGattCharacteristic
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lateinit var firmwareStream: InputStream
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/**
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* Convenience method for enqueuing work in to this service.
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*/
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fun enqueueWork(context: Context, work: Intent) {
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enqueueWork(
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context,
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SoftwareUpdateService::class.java, JOB_ID, work
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)
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}
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}
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}
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