Search found 972 matches

by chegewara
Tue Apr 07, 2020 12:08 pm
Forum: General Discussion
Topic: Transfer big data via bluetooth/ble?
Replies: 3
Views: 163

Re: Transfer big data via bluetooth/ble?

1) its a big file, 2) not possible with BLE, with this size it will take 5+ minutes, 3) i am using this plugin https://ionicframework.com/docs/native/bluetooth-le, If you want to have better throughput its advised to use classic bluetooth, maybe this plugin: https://ionicframework.com/docs/native/bl...
by chegewara
Tue Apr 07, 2020 2:04 am
Forum: General Discussion
Topic: Android BLE Write Timeout on ESP32
Replies: 3
Views: 217

Re: Android BLE Write Timeout on ESP32

Can you confirm in nRF connect logs that MTU has been negotiated and confirmed?
Remember you have to call this before connect (or at least before central asks MTU):

Code: Select all

esp_ble_gatt_set_local_mtu(500);
by chegewara
Tue Apr 07, 2020 1:58 am
Forum: General Discussion
Topic: Transfer big data via bluetooth/ble?
Replies: 3
Views: 163

Re: Transfer big data via bluetooth/ble?

There is few aspects you have take for consideration: 1) file size - what means big file, (for example i am sending 1,3MB+ file over BLE in OTA over BLE), 2) what speed you are expecting, 3) what framework you want to use for android/iOS, for example i found that ionic cordova and flutter does not s...
by chegewara
Sat Apr 04, 2020 9:32 pm
Forum: ESP32 IDF
Topic: Examples with copies of xQueueHandles
Replies: 1
Views: 140

Re: Examples with copies of xQueueHandles

Yes, but better option may be to make it global variable.
by chegewara
Sat Apr 04, 2020 9:31 pm
Forum: General Discussion
Topic: Dynamic GATT on newly advertised devices
Replies: 2
Views: 151

Re: Dynamic GATT on newly advertised devices

You have to connect to device, then search for services and characteristics before you can read characteristic.
by chegewara
Sat Apr 04, 2020 9:12 pm
Forum: General Discussion
Topic: Android BLE Write Timeout on ESP32
Replies: 3
Views: 217

Re: Android BLE Write Timeout on ESP32

Disconnect error: 0x13 Remote User Terminated Connection I am working with esp v3.3/arduino/AmazonFreeRTOS, esp-idf v4.x and i dont see any problems with it (samsung S9+ with android 10). Maybe there is problem with MTU negotiating. Setting local MTU does not mean its negotiated successfully. Do you...
by chegewara
Sat Apr 04, 2020 9:02 pm
Forum: General Discussion
Topic: Get BLE UUID for iOS pairing
Replies: 6
Views: 2135

Re: Get BLE UUID for iOS pairing

There is no such thing like default UUID. UUID is set in application.
by chegewara
Sat Apr 04, 2020 9:00 pm
Forum: ESP32 IDF
Topic: How to get IP address?
Replies: 4
Views: 296

Re: How to get IP address?

This is wrong use of printf.
IP2STR macro returns string, to use it with printf you have to use %s, not IPSTR.
by chegewara
Thu Apr 02, 2020 6:38 pm
Forum: ESP32 Arduino
Topic: Issues with custom ANCS Notification library
Replies: 3
Views: 330

Re: Issues with custom ANCS Notification library

You just cant use Serial.print this way:

Code: Select all

Serial.print(i + " ");
Try :

Code: Select all

Serial.println(i);
Serial.printf("%d%s\n", i, " ");
Or any similar.

Go to advanced search