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BLEΛͬͨΞϓϦΛ
ܧଓతʹ։ൃ͢ΔͨΊʹ
@MoyuruAizawa
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Moyuru Aizawa
Software Engineer of Catlog, RABO.
Previously at Azit, CyberAgent, and Eureka.
Love Metal, Hardcore and EDM.
Author of “ΈΜͳͷKotlin”.
MoyuruAizawa
Rank
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‣ BLEʹΑΔσόΠεͱͷ௨৴ํ๏
‣ GATT
‣ BluetoothGatt
‣ Coroutine, FlowΛͬͨվળ
‣ Tips
ͳ͢͜ͱ
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‣ BLEΛ͏ΞϓϦ࡞ͬͯͱݴΘΕͨΒԿͱͳ͘͜ͷηογϣϯͷ͜ͱ
Λࢥ͍ग़͢
‣ ͦͯ͠BLEؔ࿈ͷAPIͷ͍ํΛͳΜͱͳ͘ΩϟονΞοϓ͢Δ
‣ ͍ͭ͜CoroutineͱFlow࣮ͬͯͨ͠Μͩ΄ʙΜ🤔ͬͯࢥ͏
‣ ΅͘ͷ͔Μ͕͍͖͑ͨ͞ΐ͏ͷBLEΞϓϦΛ࣮͢Δ
ΰʔϧ
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BLE
BLE (Bluetooth Low Energy)
Bluetooth Low Energy (Bluetooth LE, BLE) ͱɺແઢPANٕज़Ͱ
͋Δ Bluetooth ͷҰ෦Ͱɺόʔδϣϯ 4.0 ͔ΒՃʹͳͬͨফඅ
ిྗͷ௨৴Ϟʔυɻ
Ҿ༻: https://ja.wikipedia.org/wiki/Bluetooth_Low_Energy
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‣ BluetoothLeScanner
‣ पลͷBluetoothDeviceΛscan͢Δ
‣ BluetoothDevice
‣ deviceͷใ(name, address…)Λऔಘ͢Δ
‣ deviceͱconnectionΛுΔ
‣ BluetoothGatt, BluetoothGattService,
BluetoothGattCharacteristic, BluetoothGattDescriptor
‣ GATTΛͬͯdeviceͱ௨৴͢Δ
BLEͰѻ͏ओͳAPI
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‣ BluetoothLeScanner
‣ पลͷBluetoothDeviceΛscan͢Δ
‣ BluetoothDevice
‣ deviceͷใ(name, address…)Λऔಘ͢Δ
‣ deviceͱconnectionΛுΔ
‣ BluetoothGatt, BluetoothGattService,
BluetoothGattCharacteristic, BluetoothGattDescriptor
‣ GATTΛͬͯdeviceͱ௨৴͢Δ
BLEͰѻ͏ओͳAPI
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GATT? 🤔
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GATT (Generic Attribute)
GATT
Service
Characteristic
Declaration, Value, Descriptor
Characteristic
Declaration, Value, Descriptor
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ͳΔ΄ͲΘ͔ΒΜ
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‣ ؾԹΛऔಘͰ͖Δ
‣ ࣪ΛऔಘͰ͖Δ
‣ ֎ઢͷൃ৴Λ໋ྩͰ͖Δ
‣ લʹड৴ͨ͠֎ઢͷσʔλΛऔಘͰ͖Δ
ՍۭͷεϚʔτϦϞίϯΛߟ͑ͯΈΔ
e.g. ImaginaryRemo
BLEΛ௨ͯ͠
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GATT (Generic Attribute)
GATT
MeterService
Temperature
Characteristic
24.6℃
Humidity
Characteristic
52%
IRService
Send
Characteristic
Received
Characteristic
e.g. ImaginaryRemo
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ࢼ͠ʹImaginaryRemo͔Β
࣪Λऔಘͯ͠ΈΑ͏
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‣ ImaginaryRemoͱͷίωΫγϣϯΛுΔ
‣ onConnectionStateChangeͰCONNECTED͕དྷΔͷΛͭ
‣ ίωΫγϣϯ͕ுΕͨΒdiscoverServicesͰServicesΛ୳͢
‣ onServicesDiscoveredͰServices͕ݟ͔ͭΔͷΛͭ
‣ BluetoothGattΛ௨ͯ͡తͷServiceΛऔಘ͠ɺ
BluetoothGattService͔ΒతCharacteristicΛऔಘ͠ɺૢ࡞͢Δ
େ·͔ͳྲྀΕ
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imaginaryRemoDevice.connectGatt(
context = context,
autoConnect = false,
callback = object : BluetoothGattCallback() { … }
)
BluetoothDevice#connectGatt
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imaginaryRemoDevice.connectGatt(
context = context,
autoConnect = false,
callback = object : BluetoothGattCallback() { … }
)
BluetoothDevice#connectGatt
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override fun onConnectionStateChange(
gatt: BluetoothGatt,
status: Int,
newState: Int
) {
if (newState == BluetoothGatt.STATE_CONNECTED) {
val isDiscoveryStarted = gatt.discoverServices()
if (!isDiscoveryStarted) {
// operationͷࣦഊΛϢʔβʔʹ௨ͨ͠ΓͳͲɻ
}
}
BluetoothGattCallback#onConnectionStateChange
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override fun onConnectionStateChange(
gatt: BluetoothGatt,
status: Int,
newState: Int
) {
if (newState == BluetoothGatt.STATE_CONNECTED) {
val isDiscoveryStarted = gatt.discoverServices()
if (!isDiscoveryStarted) {
// operationͷࣦഊΛϢʔβʔʹ௨ͨ͠ΓͳͲɻ
}
}
BluetoothGattCallback#onConnectionStateChange
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override fun onConnectionStateChange(
gatt: BluetoothGatt,
status: Int,
newState: Int
) {
if (newState == BluetoothGatt.STATE_CONNECTED) {
val isDiscoveryStarted = gatt.discoverServices()
if (!isDiscoveryStarted) {
// operationͷࣦഊΛϢʔβʔʹ௨ͨ͠ΓͳͲɻ
}
}
BluetoothGattCallback#onConnectionStateChange
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override fun onServicesDiscovered(
gatt: BluetoothGatt,
status: Int
) {
val characteristic = gatt.getService(METER_SERVICE_UUID)
?.getCharacteristic(HUMIDITY_CHARACTERISTIC_UUID)
requireNotNull(characteristic)
val isSuccess = gatt.readCharacteristic(characteristic)
if (!isSuccess) {
// operationͷࣦഊΛϢʔβʔʹ௨ͨ͠ΓͳͲɻ Ҏ߱εϥΠυͰলུ
}
}
BluetoothGattCallback#onServiceDiscovered
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override fun onServicesDiscovered(
gatt: BluetoothGatt,
status: Int
) {
val characteristic = gatt.getService(METER_SERVICE_UUID)
?.getCharacteristic(HUMIDITY_CHARACTERISTIC_UUID)
requireNotNull(characteristic)
val isSuccess = gatt.readCharacteristic(characteristic)
if (!isSuccess) {
// operationͷࣦഊΛϢʔβʔʹ௨ͨ͠ΓͳͲɻ Ҏ߱εϥΠυͰলུ
}
}
BluetoothGattCallback#onServiceDiscovered
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override fun onServicesDiscovered(
gatt: BluetoothGatt,
status: Int
) {
val characteristic = gatt.getService(METER_SERVICE_UUID)
?.getCharacteristic(HUMIDITY_CHARACTERISTIC_UUID)
requireNotNull(characteristic)
val isSuccess = gatt.readCharacteristic(characteristic)
if (!isSuccess) {
// operationͷࣦഊΛϢʔβʔʹ௨ͨ͠ΓͳͲɻ Ҏ߱εϥΠυͰলུ
}
}
BluetoothGattCallback#onServiceDiscovered
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override fun onServicesDiscovered(
gatt: BluetoothGatt,
status: Int
) {
val characteristic = gatt.getService(METER_SERVICE_UUID)
?.getCharacteristic(HUMIDITY_CHARACTERISTIC_UUID)
requireNotNull(characteristic)
val isSuccess = gatt.readCharacteristic(characteristic)
if (!isSuccess) {
// operationͷࣦഊΛϢʔβʔʹ௨ͨ͠ΓͳͲɻ Ҏ߱εϥΠυͰলུ
}
}
BluetoothGattCallback#onServiceDiscovered
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override fun onCharacteristicRead(
gatt: BluetoothGatt,
characteristic: BluetoothGattCharacteristic,
status: Int
) {
if (
characteristic.uuid == HUMIDITY_CHARACTERISTIC_UUID
) {
characteristic.value // ࣪ GET!!
}
}
BluetoothGattCallback#onCharacteristicRead
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override fun onCharacteristicRead(
gatt: BluetoothGatt,
characteristic: BluetoothGattCharacteristic,
status: Int
) {
if (
characteristic.uuid == HUMIDITY_CHARACTERISTIC_UUID
) {
characteristic.value // ࣪ GET!!
}
}
BluetoothGattCallback#onCharacteristicRead
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‣ onConnectionStateChangeͰCONNECTEDΛͭ
‣ discoverServicesΛ࣮ߦ͢Δ
‣ onServicesDiscoveredΛͭ
‣ onServicesDiscoveredҎ߱
ҙͷService, CharacteristicʹΞΫηεՄೳʹͳΔ
‣ READ/WRITEΛߦͬͨΒͦͷྃͨͳ͚ΕͳΒͳ͍
͓͖͍֮͑ͯͨ͜ͱ
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ImaginaryRemoʹ͍ͭͯ
͏গ͠ෳࡶͳέʔεΛߟ͑ͯΈΔ
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‣ αʔόʔΛܦ༝ͯ͠ɺ֎ग़ઌ͔ΒՈిΛૢ࡞Ͱ͖Δ
‣ Wi-Fiʹଓ͢Δඞཁ͕͋Δɻ
‣ σόΠε͕ΞΫηεՄೳͳWi-FiͷSSIDҰཡΛεϚʔτϑΥϯʹฦ͢
‣ Wi-FiͷSSIDͱPASSWORDΛσόΠεʹૹ৴͢Δ
ྫ͑ɺσόΠεͷॳظઃఆϑϩʔ
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Service͓ͦΒ͘͜ͷΑ͏ͳઃܭʹͳΔ
ConfigurationService
SSID
Characteristic
Password
Characteristic
FoundSSID
Characteristic
RequestSearchSSID
Characteristic
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override fun onConnectionStateChange(
gatt: BluetoothGatt,
status: Int,
newState: Int
) {
if (newState == BluetoothGatt.STATE_CONNECTED)
gatt.discoverServices()
}
ͱΓ͋͑ͣconnectedΛͭ
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override fun onServicesDiscovered(
gatt: BluetoothGatt,
status: Int
) {
val characteristics = gatt.getService(CONFIGURATION_SERVICE)
?.getCharacteristic(FOUND_SSID_CHARACTERISTIC)
requireNotNull(characteristics)
gatt.setCharacteristicNotification(characteristics, true)
val descriptor = characteristics.getDescriptor(CCCD)
descriptor
.value = BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE
gatt.writeDescriptor(descriptor)
}
servicesDiscoveredΛͭ
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override fun onServicesDiscovered(
gatt: BluetoothGatt,
status: Int
) {
val characteristics = gatt.getService(CONFIGURATION_SERVICE)
?.getCharacteristic(FOUND_SSID_CHARACTERISTIC)
requireNotNull(characteristics)
gatt.setCharacteristicNotification(characteristics, true)
val descriptor = characteristics.getDescriptor(CCCD)
descriptor
.value = BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE
gatt.writeDescriptor(descriptor)
}
σόΠε͕ݟ͚ͭͨSSIDΛ௨͢ΔΑ͏ઃఆ͢Δ
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override fun onServicesDiscovered(
gatt: BluetoothGatt,
status: Int
) {
val characteristics = gatt.getService(CONFIGURATION_SERVICE)
?.getCharacteristic(FOUND_SSID_CHARACTERISTIC)
requireNotNull(characteristics)
gatt.setCharacteristicNotification(characteristics, true)
val descriptor = characteristics.getDescriptor(CCCD)
descriptor
.value = BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE
gatt.writeDescriptor(descriptor)
}
σόΠε͕ݟ͚ͭͨSSIDΛ௨͢ΔΑ͏ઃఆ͢Δ
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override fun onServicesDiscovered(
gatt: BluetoothGatt,
status: Int
) {
val characteristics = gatt.getService(CONFIGURATION_SERVICE)
?.getCharacteristic(FOUND_SSID_CHARACTERISTIC)
requireNotNull(characteristics)
gatt.setCharacteristicNotification(characteristics, true)
val descriptor = characteristics.getDescriptor(CCCD)
descriptor
.value = BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE
gatt.writeDescriptor(descriptor)
}
σόΠε͕ݟ͚ͭͨSSIDΛ௨͢ΔΑ͏ઃఆ͢Δ
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override fun onServicesDiscovered(
gatt: BluetoothGatt,
status: Int
) {
val characteristics = gatt.getService(CONFIGURATION_SERVICE)
?.getCharacteristic(FOUND_SSID_CHARACTERISTIC)
requireNotNull(characteristics)
gatt.setCharacteristicNotification(characteristics, true)
val descriptor = characteristics.getDescriptor(CCCD)
descriptor
.value = BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE
gatt.writeDescriptor(descriptor)
}
σόΠε͕ݟ͚ͭͨSSIDΛ௨͢ΔΑ͏ઃఆ͢Δ
BluetoothSIGͰ༧Ί
ఆٛ͞Ε͍ͯΔUUID
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override fun onDescriptorWrite(
gatt: BluetoothGatt,
descriptor: BluetoothGattDescriptor,
status: Int
) {
if (descriptor.uuid == CCCD) {
val characteristic = gatt.getService(CONFIGURATION_SERVICE)
?.getCharacteristic(REQUEST_SEARCH_SSID_CHARACTERISTIC)
requireNotNull(characteristic)
characteristic.value = flag
gatt.writeCharacteristic(characteristic)
}
}
௨ͷઃఆྃΛͭ
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override fun onDescriptorWrite(
gatt: BluetoothGatt,
descriptor: BluetoothGattDescriptor,
status: Int
) {
if (descriptor.uuid == CCCD) {
val characteristic = gatt.getService(CONFIGURATION_SERVICE)
?.getCharacteristic(REQUEST_SEARCH_SSID_CHARACTERISTIC)
requireNotNull(characteristic)
characteristic.value = flag
gatt.writeCharacteristic(characteristic)
}
}
SSIDͷݕࡧΛ໋ྩ͢Δ
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override fun onDescriptorWrite(
gatt: BluetoothGatt,
descriptor: BluetoothGattDescriptor,
status: Int
) {
if (descriptor.uuid == CCCD) {
val characteristic = gatt.getService(CONFIGURATION_SERVICE)
?.getCharacteristic(REQUEST_SEARCH_SSID_CHARACTERISTIC)
requireNotNull(characteristic)
characteristic.value = flag
gatt.writeCharacteristic(characteristic)
}
}
SSIDͷݕࡧΛ໋ྩ͢Δ
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override fun onCharacteristicChanged(
gatt: BluetoothGatt,
characteristic: BluetoothGattCharacteristic
) {
if (characteristic.uuid == FOUND_SSID_CHARACTERISTIC) {
appendSsidToList(characteristic.value)
}
}
ݟ͔ͭͬͨSSIDͷ௨Λͬͯஞ࣍UIʹө͢Δ
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override fun onCharacteristicChanged(
gatt: BluetoothGatt,
characteristic: BluetoothGattCharacteristic
) {
if (characteristic.uuid == FOUND_SSID_CHARACTERISTIC) {
appendSsidToList(characteristic.value)
}
}
ݟ͔ͭͬͨSSIDͷ௨Λͬͯஞ࣍UIʹө͢Δ
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onClick {
val characteristic = gatt.getService(CONFIGURATION_SERVICE)
?.getCharacteristic(SSID_CHARACTERISTIC)
requireNotNull(characteristic)
characteristic.value = selectedSsid
gatt.writeCharacteristic(characteristic)
}
બ͞ΕͨSSIDΛॻ͖ࠐΉ
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onClick {
val characteristic = gatt.getService(CONFIGURATION_SERVICE)
?.getCharacteristic(SSID_CHARACTERISTIC)
requireNotNull(characteristic)
characteristic.value = selectedSsid
gatt.writeCharacteristic(characteristic)
}
બ͞ΕͨSSIDΛॻ͖ࠐΉ
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override fun onCharacteristicWrite(
gatt: BluetoothGatt,
characteristic: BluetoothGattCharacteristic,
status: Int
) {
when (characteristic.uuid) {
SSID_CHARACTERISTIC -> {
val characteristic = gatt.getService(CONFIGURATION_SERVICE)
?.getCharacteristic(PASSWORD_CHARACTERISTIC)
requireNotNull(characteristic)
characteristic.value = password
gatt.writeCharacteristic(characteristic)
}
PASSWORD_CHARACTERISTIC -> { … }
}
}
SSIDͷॻ͖ࠐΈྃΛͭ
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override fun onCharacteristicWrite(
gatt: BluetoothGatt,
characteristic: BluetoothGattCharacteristic,
status: Int
) {
when (characteristic.uuid) {
SSID_CHARACTERISTIC -> {
val characteristic = gatt.getService(CONFIGURATION_SERVICE)
?.getCharacteristic(PASSWORD_CHARACTERISTIC)
requireNotNull(characteristic)
characteristic.value = password
gatt.writeCharacteristic(characteristic)
}
PASSWORD_CHARACTERISTIC -> { … }
}
}
PASSWORDΛॻ͖ࠐΉ
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override fun onCharacteristicWrite(
gatt: BluetoothGatt,
characteristic: BluetoothGattCharacteristic,
status: Int
) {
when (characteristic.uuid) {
SSID_CHARACTERISTIC -> { … }
PASSWORD_CHARACTERISTIC -> {
// PASSWORDॻ͖ࠐΈྃ
// Զͨͪͷઓ͍·ͩ͜Ε͔Βͩ!!!
// ૄ௨֬ೝͳΓͳΜͳΓͷ໋ྩଓ͘…
}
}
}
PASSWORDॻ͖ࠐΈྃΛͭ
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override fun onCharacteristicWrite(
gatt: BluetoothGatt,
characteristic: BluetoothGattCharacteristic,
status: Int
) {
when (characteristic.uuid) {
SSID_CHARACTERISTIC -> { … }
PASSWORD_CHARACTERISTIC -> {
// PASSWORDॻ͖ࠐΈྃ
// Զͨͪͷઓ͍·ͩ͜Ε͔Βͩ!!!
// ૄ௨֬ೝͳΓͳΜͳΓͷ໋ྩଓ͘…
}
}
}
PASSWORDॻ͖ࠐΈྃΛͭ
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ແཧʔ!!
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Catlog࠷ॳ͜Μͳײ͡ͷίʔυͩͬͨ
ͳͥ͜ΜͳίʔϧόοΫࠈʹ…
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Catlog࠷ॳ͜Μͳײ͡ͷίʔυͩͬͨ
onCharacteristicWriteͱ͔onDescriptorWriteͱ
͔ͷதͰ࣍ͷ໋ྩͬͯΔ͚ͲͳΜͰ…?
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Catlog࠷ॳ͜Μͳײ͡ͷίʔυͩͬͨ
Ұؾʹ໋ྩ͢ΓΌ͑͑Μ
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Catlog࠷ॳ͜Μͳײ͡ͷίʔυͩͬͨ
ͳΔ΄ͲͶɺͳΜ໋͔ྩͨ͠Βɺͦͷ݁Ռ͕ฦͬ
ͯ͘Δ·Ͱ࣍ͷ໋ྩͰ͖ͳ͍ͷ͔ɻ
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Catlog࠷ॳ͜Μͳײ͡ͷίʔυͩͬͨ
͔ͩΒ͜Μͳ͜ͱʹ…
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!
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CoroutineͱFlowͰ͍͍
ײ͡ʹͰ͖ΔͷͰ?
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Catlog࠷ॳ͜Μͳײ͡ͷίʔυͩͬͨ
CoroutineͰॻ͚ΔΑ͏ʹ͢Εɺ໋ྩͩͨ͠Β໋
ྩͷྃΛawait͢Δͬͯ͜ͱ͕Ͱ͖ͦ͏ͳ༧ײ
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Catlog࠷ॳ͜Μͳײ͡ͷίʔυͩͬͨ
“Ұؾʹ໋ྩ͢ΓΌ͑͑Μ”
Λίʔυͷݟ্࣮ͨݱͰ͖ͦ͏ͩ
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BLE x Coroutine x Flow
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‣ BLEؔ࿈ͷAPIΛCoroutineFlowͰwrap͢Δ
‣ BluetoothDeviceͱͷ௨৴Λ୲͏BluetoothClientΫϥεΛ࣮͢Δ
‣ ֤eventΛawait͢ΔؔΛఏڙ͢Δ
ུ֓
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‣ sealed interfaceΛͬͯBluetoothGattCallbackͷ֤ؔʹରԠ͢
Δdata classΛఆٛ͢Δ
‣ લड़ͷdata classΛFlowͰแΜͰฦ֦͢ுؔΛ࣮͢Δ
‣ RxBindingͱ͔CorbindͰΒΕͯΔख๏
BluetoothDevice#connectGatt
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sealed interface BluetoothGattEvent {
val gatt: BluetoothGatt
data class ConnectionStateChange(
override val gatt: BluetoothGatt,
val status: Int,
val newState: Int
) : BluetoothGattEvent
data class ServicesDiscovered(
override val gatt: BluetoothGatt,
val status: Int
) : BluetoothGattEvent
// ུ
}
BluetoothDevice#connectGatt
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fun BluetoothDevice.connectGatt(context: Context, autoConnect: Boolean) =
channelFlow {
val gatt = connectGatt(context, autoConnect, object : BluetoothGattCallback(){
override fun onConnectionStateChange(
gatt: BluetoothGatt,
status: Int, newState: Int
) {
trySend(BluetoothGattEvent.ConnectionStateChange(gatt, status, newState))
}
override fun onServicesDiscovered(
gatt: BluetoothGatt,
status: Int
) {
trySend(BluetoothGattEvent.ServicesDiscovered(gatt, status))
}
// ུ
})
}
BluetoothDevice#connectGatt
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fun BluetoothDevice.connectGatt(context: Context, autoConnect: Boolean) =
channelFlow {
// ུ
awaitClose {
gatt.disconnect()
gatt.close()
}
}
BluetoothDevice#connectGatt
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class BluetoothClient(
private val context: Context,
private val device: BluetoothDevice
) {
private val gattEvent = MutableStateFlow(null)
private lateinit var gatt: BluetoothGatt
// ུ
}
BluetoothClient
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class BluetoothClient(
private val context: Context,
private val device: BluetoothDevice
) {
private val gattEvent = MutableStateFlow(null)
private lateinit var gatt: BluetoothGatt
// ུ
}
BluetoothClient
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class BluetoothClient(
private val context: Context,
private val device: BluetoothDevice
) {
private val gattEvent = MutableStateFlow(null)
private lateinit var gatt: BluetoothGatt
// ུ
}
BluetoothClient
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fun connect(autoConnect: Boolean, coroutineScope: CoroutineScope) {
device.connectGatt(context, autoConnect)
.onEach {
gatt = it.gatt
gattEvent.value = it
}
.launchIn(coroutineScope)
}
BluetoothClient#connect
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fun connect(autoConnect: Boolean, coroutineScope: CoroutineScope) {
device.connectGatt(context, autoConnect)
.onEach {
gatt = it.gatt
gattEvent.value = it
}
.launchIn(coroutineScope)
}
BluetoothClient#connect
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suspend fun awaitConnected() {
if (connectionState == BluetoothProfile.STATE_CONNECTED) return
gattEvent.first {
it is BluetoothGattEvent.ConnectionStateChange &&
it.newState == BluetoothProfile.STATE_CONNECTED
}
}
CONNECTEDΛawaitͰ͖Δ
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suspend fun awaitConnected() {
if (connectionState == BluetoothProfile.STATE_CONNECTED) return
gattEvent.first {
it is BluetoothGattEvent.ConnectionStateChange &&
it.newState == BluetoothProfile.STATE_CONNECTED
}
}
CONNECTEDΛawaitͰ͖Δ
͜ͷsuspend functionΛݺΜͩCoroutine
͜ͷ͕݅ຬͨ͞ΕΔ·Ͱதஅ͞ΕΔ
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suspend fun awaitServicesDiscovered() {
gattEvent
.first { it is BluetoothGattEvent.ServicesDiscovered }
}
suspend fun awaitCharacteristicWritten(characteristicUuid: UUID) {
gattEvent
.first {
it is BluetoothGattEvent.CharacteristicWrite &&
it.characteristic.uuid == characteristicUuid
}
}
֤event·Ͱawait͢Δ͜ͱͰ͖Δ
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bleClient.run {
connect(false, coroutineScope)
awaitConnected()
discoverServices()
awaitServicesDiscovered()
setNotificationEnabled(
CONFIGURATION_SERVICE,
FOUND_SSID_CHARACTERISTIC,
true
)
awaitNotificationEnabled()
observeNotification(FOUND_SSID_CHARACTERISTIC)
.onEach { appendSsidToList(it.characteristic.value) }
.launchIn(coroutineScope)
writeCharacteristic(
CONFIGURATION_SERVICE,
REQUEST_SEARCH_SSID_CHARACTERISTIC,
flag
)
…
σόΠεͱͷ௨৴खॱͱίʔυͷྲྀΕ͕Ұக͢Δ
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bleClient.run {
connect(false, coroutineScope)
awaitConnected()
discoverServices()
awaitServicesDiscovered()
setNotificationEnabled(
CONFIGURATION_SERVICE,
FOUND_SSID_CHARACTERISTIC,
true
)
awaitNotificationEnabled()
observeNotification(FOUND_SSID_CHARACTERISTIC)
.onEach { appendSsidToList(it.characteristic.value) }
.launchIn(coroutineScope)
writeCharacteristic(
CONFIGURATION_SERVICE,
REQUEST_SEARCH_SSID_CHARACTERISTIC,
flag
)
}
σόΠεͱͷ௨৴खॱͱίʔυͷྲྀΕ͕Ұக͢Δ
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bleClient.run {
connect(false, coroutineScope)
awaitConnected()
discoverServices()
awaitServicesDiscovered()
setNotificationEnabled(
CONFIGURATION_SERVICE,
FOUND_SSID_CHARACTERISTIC,
true
)
awaitNotificationEnabled()
observeNotification(FOUND_SSID_CHARACTERISTIC)
.onEach { appendSsidToList(it.characteristic.value) }
.launchIn(coroutineScope)
writeCharacteristic(
CONFIGURATION_SERVICE,
REQUEST_SEARCH_SSID_CHARACTERISTIC,
flag
)
}
σόΠεͱͷ௨৴खॱͱίʔυͷྲྀΕ͕Ұக͢Δ
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bleClient.run {
connect(false, coroutineScope)
awaitConnected()
discoverServices()
awaitServicesDiscovered()
setNotificationEnabled(
CONFIGURATION_SERVICE,
FOUND_SSID_CHARACTERISTIC,
true
)
awaitNotificationEnabled()
observeNotification(FOUND_SSID_CHARACTERISTIC)
.onEach { appendSsidToList(it.characteristic.value) }
.launchIn(coroutineScope)
writeCharacteristic(
CONFIGURATION_SERVICE,
REQUEST_SEARCH_SSID_CHARACTERISTIC,
flag
)
}
σόΠεͱͷ௨৴खॱͱίʔυͷྲྀΕ͕Ұக͢Δ
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bleClient.run {
connect(false, coroutineScope)
awaitConnected()
discoverServices()
awaitServicesDiscovered()
setNotificationEnabled(
CONFIGURATION_SERVICE,
FOUND_SSID_CHARACTERISTIC,
true
)
awaitNotificationEnabled()
observeNotification(FOUND_SSID_CHARACTERISTIC)
.onEach { appendSsidToList(it.characteristic.value) }
.launchIn(coroutineScope)
writeCharacteristic(
CONFIGURATION_SERVICE,
REQUEST_SEARCH_SSID_CHARACTERISTIC,
flag
)
}
σόΠεͱͷ௨৴खॱͱίʔυͷྲྀΕ͕Ұக͢Δ
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No content
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ͦΜͳʹ͘ͳ͍BLE
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։ൃऀʹݫ͍͠BLE͞Μ
BLE͏Μͱ͢Μͱ͍Θͳ͘ͳͬͨΜ͚ͩͲ…
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‣ BluetoothͷAPI͕ΩϝΔࣄ͕͋Δ
‣ ͷઃఆͰBluetoothΛҰ୴OFFʹͯ͠࠶ONʹ…
‣ ͦΕͰ࣏Βͳ͔ͬͨΒΛ࠶ىಈͰ…
‣ ͢Μ·ͤΜ…
શʹ͢ΔBLE͞Μ
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‣ ϢʔβʔͷखݩͰͲΜͳෆ۩߹͕ى͖͔ͨ
ௐࠪͰ͖ΔΑ͏ʹͨ͠΄͏͕ྑͦ͞͏ɻ
‣ Crashlytics
‣ Ϋϥογϡൃੜ࣌ʹͦͷखલͰى͖͍ͯͨϩάݟΕΔ
‣ ΫϥογϡΛ͏ෆ۩߹͋·Γͳ͍ͷͰɺ༗༻Ͱͳ͍
‣ Bugfender
‣ Logcatͷग़ྗͯ͢ɺ͘͠બఆͨ͠ϩάΛऩूͰ͖Δ
‣ Bugfenderศརͦ͏(ݕ౼த)
ෆ໌ͳෆ۩߹ʹରԠ͢ΔͨΊʹ
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No content
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BLEΛͬͨΞϓϦ
ͱ͍ͬͯBLEͷϢʔεέʔε༷ʑ
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Catlog Series
BLE
BLE
HTTP
ઃఆ ϩά
ϩ
ά
BLE HTTP
ઃఆ ϩά
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Catlog Series
BLE
BLE
HTTP
ઃఆ ϩά
ϩ
ά
BLE HTTP
ઃఆ ϩά
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SwitchBot & SwitchBot Hub (ͨͿΜ͜Μͳײ͡)
BLE
ઃఆ
࡞ಈ໋ྩ
HTTP SwitchBotͷ࡞ಈ໋ྩ
SwitchBotͷ࡞ಈ໋ྩ
BLE ࡞ಈ໋ྩ
HTTP?
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SwitchBot & SwitchBot Hub (ͨͿΜ͜Μͳײ͡)
BLE
ઃఆ
࡞ಈ໋ྩ
HTTP SwitchBotͷ࡞ಈ໋ྩ
SwitchBotͷ࡞ಈ໋ྩ
BLE ࡞ಈ໋ྩ
HTTP?
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‣ CatlogσόΠεͷઃఆͷΈBLEΛ͍ͬͯΔ
‣ ઃఆը໘͕ੜ͖͍ͯΔؒͷΈCatlogͱίωΫγϣϯΛு͍ͬͯΕ
͍͍
‣ ઃఆը໘ͰconnectionΛone-shotͰ͍ࣺͯΒΕΔ
‣ SwitchBotઃఆ͓Αͼ࡞ಈ໋ྩʹBLEΛ͍ͬͯΔ
‣ ΞϓϦ͕ىಈதৗ࣌SwitchBotͱίωΫγϣϯΛுΓɺ͍ͭͰ
SwitchBotʹରͯ͠BLEΛ௨໋ͯ͠ྩͰ͖ΔΑ͏ʹ͍ͯ͠Δ(ͱ༧)
BLEͷϢʔεέʔεΞϓϦʹΑ༷ͬͯʑ
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‣ CatlogFragmentͷlifecycleͷதͰBLEΛ͑Ε͍͍
‣ SwitchBotɺ1ActivityߏͳΒActivityͷlifecycleͷதɺͦ͏Ͱͳ
͍ͳΒServiceͷதͰBLEΛ͏ඞཁ͕͋Γͦ͏
BLEͷϢʔεέʔεΞϓϦʹΑ༷ͬͯʑ
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‣ CatlogFragmentͷlifecycleͷதͰBLEΛ͑Ε͍͍
‣ SwitchBotɺ1ActivityߏͳΒActivityͷlifecycleͷதɺͦ͏Ͱͳ
͍ͳΒServiceͷதͰBLEΛ͏ඞཁ͕͋Γͦ͏
‣ ΞϓϦʹΑͬͯBLE·ΘΓͷઃܭมΘΓͦ͏
BLEͷϢʔεέʔεΞϓϦʹΑ༷ͬͯʑ
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Ϣʔεέʔεʹ߹Θͤͯ
࠷ߴͷBLEΞϓϦΛ࡞Ζ͏
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Thank you