chipweinberger
commented
9 months ago never seen this problem before. try flutter clean
Closed faizannazir closed 9 months ago
chipweinberger
commented
9 months ago never seen this problem before. try flutter clean
faizannazir
commented
9 months ago never seen this problem before. try
flutter clean
getting same error
faizannazir
commented
9 months ago @chipweinberger Finally I am able to build it. I want toa add file uplaod ota update to update firmware can you guide me how to integrate it
joshuadutton provided code
`import 'dart:async'; import 'dart:io';
import 'package:file_picker/file_picker.dart'; import 'package:flutter/foundation.dart'; import 'package:flutter_blue_plus/flutter_blue_plus.dart'; import 'package:http/http.dart' as http;
const int mtuOffsetForChunkSize = 3; const int otaControlRequest = 0x01; const int otaControlRequestAck = 0x02; const int otaControlRequestNak = 0x03; const int otaControlDone = 0x04; const int otaControlDoneAck = 0x05; const int otaControlDoneNak = 0x06; const int otaControlRestart = 0x07; const int otaControlRestartAck = 0x08;
class Logger { static void debug(Object? object) { if (kDebugMode) { // ignore: avoid_print print("$object"); } }
static void error(Object? object) { // ignore: avoid_print print('\x1B[31m$object\x1B[0m'); } }
Future
Future
Future
if (result == null || result.files.isEmpty) { throw 'Error getting firmware data: No file picked'; }
try { return firmwareBinaryFromFile(result.files.first.path!); } catch (e) { throw 'Error getting firmware data: $e'; } }
Future
Stream
// Prepare a byte list to write MTU size to controlCharacteristic
Uint8List byteList = Uint8List(2);
byteList[0] = chunkSize & 0xFF;
byteList[1] = (chunkSize >> 8) & 0xFF;
// write mtuSize to dataCharacteristic
Logger.debug("Sending chunk size $chunkSize $byteList");
await dataCharacteristic.write(byteList);
await controlCharacteristic.write([otaControlRequest]);
List<int> value = await controlCharacteristic.read().timeout(const Duration(seconds: 10));
Logger.debug('value returned is this ------- ${value[0]}');
if (value[0] != otaControlRequestAck) {
throw 'Start Command Failed';
}
int packetNumber = 1;
int totalPackets = (firmwareBinary.length / chunkSize).ceil();
for (int i = 0; i < firmwareBinary.length; i += chunkSize) {
int end = i + chunkSize;
if (end > firmwareBinary.length) {
end = firmwareBinary.length;
}
final chunk = firmwareBinary.sublist(i, end);
double progress = (packetNumber / totalPackets);
String roundedProgressPercentage = (progress * 100).toStringAsPrecision(3);
if (progress >= 1.0) {
// don't go to 100 until finish command has been acknowledged
progress = 0.99;
}
Logger.debug('Writing packet $packetNumber of $totalPackets ($roundedProgressPercentage%).');
await dataCharacteristic.write(chunk);
yield progress;
packetNumber++;
}
updateIsDone = true;
await controlCharacteristic.write([otaControlDone]);
// Check if controlCharacteristic reads 0x05, indicating OTA update finished
value = await controlCharacteristic.read().timeout(const Duration(seconds: 10));
Logger.debug('value returned is this ------- ${value[0]}');
if (value[0] == otaControlDoneAck) {
Logger.debug('OTA update finished');
yield 1.0;
} else {
Logger.debug('OTA update failed');
throw 'Finish Command Failed';
}} catch (error) { Logger.error(error); if (updateIsDone && error.toString().contains("disconnected")) { yield 1.0; } else { yield* Stream.error(error); } } }`
chipweinberger
commented
9 months ago glad you're able to build it
Requirements
Have you checked this problem on the example app?
No
FlutterBluePlus Version
1.31.15
Flutter Version
3.19.2
What OS?
Android
OS Version
10
Bluetooth Module
esp32
What is your problem?
Not able to run example app
Logs