endrelovas
commented
4 years ago I added 250 msec delay after connection and the issue has gone. Sounds silly but works.
sync() {
let swinger = this;
this.downloadedData = [];
return new Promise((resolve, reject) => {
swinger.bleDevice.once('disconnect', () => {
setTimeout(async () => {
common.logger.info(`Device: disconnected. Data length: ${this.downloadedData.length}`)
let firstN = this.downloadedData.slice(0, 42000)
// common.logger.info(`Device: Data: ${common.toHexString(firstN)}`)
let digest = crypto.createHash('sha256').update(Buffer.from(firstN)).digest('hex')
common.logger.info(`HASH: ${digest}`)
resolve(this.downloadedData);
}, 1000)
})
swinger.bleDevice.once('connect', () => {
common.logger.info(`Device: Connected`)
swinger.downloadData().then(success => {
}, error => {
swinger.disconnect().then(null);
});
})
swinger.bleDevice.connect((error) => {
if (error != null) {
common.logger.error(`Device: could not connect: ${error.toString()}`)
reject(error);
}
});
})
}
async downloadData() {
let swinger = this
return new Promise((async (resolve, reject) => {
try {
setTimeout( async () => {
swinger.characteristic = await swinger.getMyCharacteristics();
swinger.waitForData();
setTimeout(async () => {
await swinger.signUpForCharacteristic()
resolve()
}, 250)
}, 250)
} catch (e) {
common.logger.error(`Device: Download data failed`)
reject(e)
}
}));
}
javiermelendezc
mrstegeman
rzr
devorrah
risnub
I'm currently trying to connect to one of my peripherals using @abandonware/noble, As soon as a connection is established, i call discoverServices() and most of the time the connection falls immediately. I use event-based transitions using Statecharts, so I'm sure there's no overlapping of commands during the connection. It's totally related to: https://github.com/noble/noble/issues/465 Where some people think it's because BLE and WiFi are on the same chipset on RPi 3B+ and RPi Zero. Although these boards work well on bluepy according to someone on the thread. So I think the problem it's related to hci. Any ideas on how to solve this?