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https://github.com/meshtastic/Meshtastic-Android.git
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we now fetch any new rxmessages when they arrive at the radio
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geeksville
parent
6244556f8b
commit
10ad07e136
11 changed files with 110 additions and 43 deletions
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@ -1,223 +0,0 @@
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package com.geeksville.mesh
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import android.bluetooth.BluetoothAdapter
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import android.bluetooth.BluetoothDevice
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import android.bluetooth.BluetoothGattCharacteristic
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import android.bluetooth.BluetoothManager
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import android.bluetooth.le.ScanCallback
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import android.bluetooth.le.ScanFilter
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import android.bluetooth.le.ScanResult
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import android.bluetooth.le.ScanSettings
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import android.content.Context
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import android.content.Intent
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import android.os.ParcelUuid
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import androidx.core.app.JobIntentService
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import com.geeksville.android.Logging
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import java.util.*
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import java.util.zip.CRC32
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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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*
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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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lateinit var device: BluetoothDevice
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fun startUpdate() {
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info("starting update")
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val sync = SafeBluetooth(this@SoftwareUpdateService, device)
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val firmwareStream = assets.open("firmware.bin")
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val firmwareCrc = CRC32()
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var firmwareNumSent = 0
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val firmwareSize = firmwareStream.available()
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sync.connect()
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sync.discoverServices() // Get our services
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// we begin by setting our MTU size as high as it can go
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sync.requestMtu(512)
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val service = sync.gatt!!.services.find { it.uuid == SW_UPDATE_UUID }!!
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val totalSizeDesc = service.getCharacteristic(SW_UPDATE_TOTALSIZE_CHARACTER)
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val dataDesc = service.getCharacteristic(SW_UPDATE_DATA_CHARACTER)
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val crc32Desc = service.getCharacteristic(SW_UPDATE_CRC32_CHARACTER)
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val updateResultDesc = service.getCharacteristic(SW_UPDATE_RESULT_CHARACTER)
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// Start the update by writing the # of bytes in the image
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logAssert(
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totalSizeDesc.setValue(
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firmwareSize,
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BluetoothGattCharacteristic.FORMAT_UINT32,
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0
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)
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)
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sync.writeCharacteristic(totalSizeDesc)
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// Our write completed, queue up a readback
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val totalSizeReadback = sync.readCharacteristic(totalSizeDesc)
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.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT32, 0)
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if (totalSizeReadback == 0) // FIXME - handle this case
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throw Exception("Device rejected file size")
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// Send all the blocks
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while (firmwareNumSent < firmwareSize) {
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info("sending block ${firmwareNumSent * 100 / firmwareSize}%")
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var blockSize = 512 - 3 // Max size MTU excluding framing
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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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firmwareCrc.update(buffer)
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// updateGatt.beginReliableWrite()
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dataDesc.value = buffer
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sync.writeCharacteristic(dataDesc)
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firmwareNumSent += blockSize
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}
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// We have finished sending all our blocks, so post the CRC so our state machine can advance
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val c = firmwareCrc.value
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info("Sent all blocks, crc is $c")
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logAssert(crc32Desc.setValue(c.toInt(), BluetoothGattCharacteristic.FORMAT_UINT32, 0))
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sync.writeCharacteristic(crc32Desc)
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// we just read the update result if !0 we have an error
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val updateResult =
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sync.readCharacteristic(updateResultDesc)
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.getIntValue(BluetoothGattCharacteristic.FORMAT_UINT8, 0)
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if (updateResult != 0) // FIXME - handle this case
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throw Exception("Device update failed, reason=$updateResult")
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// FIXME perhaps ask device to reboot
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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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info("onScanResult")
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// We don't need any more results now
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bluetoothAdapter.bluetoothLeScanner.stopScan(this)
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device = result.device
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}
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}
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// Until my race condition with scanning is fixed
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fun connectToTestDevice() {
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device = bluetoothAdapter.getRemoteDevice("B4:E6:2D:EA:32:B7")
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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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debug("Executing work: $intent")
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when (intent.action) {
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scanDevicesIntent.action -> scanLeDevice(true)
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startUpdateIntent.action -> {
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connectToTestDevice() // FIXME, pass in as an intent arg instead
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startUpdate()
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}
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else -> TODO("Unhandled case")
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}
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}
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companion object {
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/**
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* Unique job ID for this service. Must be the same for all work.
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*/
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private const val JOB_ID = 1000
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val scanDevicesIntent = Intent("$prefix.SCAN_DEVICES")
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val startUpdateIntent = Intent("$prefix.START_UPDATE")
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private const val SCAN_PERIOD: Long = 10000
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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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/**
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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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