Search found 2207 matches
- Wed Apr 21, 2021 11:49 pm
- Forum: ESP-IDF
- Topic: How GATT server can distinguish between connecting devices
- Replies: 12
- Views: 9141
Re: How GATT server can distinguish between connecting devices
1) table of characteristics is one for the entire device (usually) 2) each characteristic that supports notifications/indications should have CCC descriptor (some peripherals does not have it) 3) bluetooth specs says that every client should be able to register for notify independent, if server supp...
- Wed Apr 21, 2021 7:56 pm
- Forum: ESP-IDF
- Topic: How GATT server can distinguish between connecting devices
- Replies: 12
- Views: 9141
Re: How GATT server can distinguish between connecting devices
Youre right, i was not 100% accurate in my answer. What i was in mind is fact that even if notification is send to connected device, the device will ignore that notification as long as you dont call in your code: esp_ble_gattc_register_for_notify https://docs.espressif.com/projects/esp-idf/en/latest...
- Wed Apr 21, 2021 4:38 am
- Forum: ESP-IDF
- Topic: ESP32S2 USB-CDC does not appear as option in CONFIG_ESP_CONSOLE_UART
- Replies: 6
- Views: 4334
Re: ESP32S2 USB-CDC does not appear as option in CONFIG_ESP_CONSOLE_UART
I believe that CDC console has been added from v4.3.
- Tue Apr 20, 2021 9:49 pm
- Forum: ESP-IDF
- Topic: ESP32S2 USB-CDC does not appear as option in CONFIG_ESP_CONSOLE_UART
- Replies: 6
- Views: 4334
Re: ESP32S2 USB-CDC does not appear as option in CONFIG_ESP_CONSOLE_UART
Next question would be: what esp-idf version you are running at?
- Tue Apr 20, 2021 9:47 pm
- Forum: ESP-IDF
- Topic: How GATT server can distinguish between connecting devices
- Replies: 12
- Views: 9141
Re: How GATT server can distinguish between connecting devices
The characteristic has only a descriptor for sending a notification, how does the server remember which of the clients should be sent a notification, and which should not? Notifications is like broadcast and forget. the only thing what server cares about is: "is there anyone that wish to listen to ...
- Tue Apr 20, 2021 9:40 pm
- Forum: General Discussion
- Topic: Adding a Arduino library to ESP-IDF Project
- Replies: 3
- Views: 5197
- Tue Apr 20, 2021 4:13 pm
- Forum: General Discussion
- Topic: Flash read error, 1000 on custom PCB
- Replies: 4
- Views: 2673
- Tue Apr 20, 2021 4:12 pm
- Forum: ESP-IDF
- Topic: How GATT server can distinguish between connecting devices
- Replies: 12
- Views: 9141
Re: How GATT server can distinguish between connecting devices
I dont know what you exactly trying to do, but from description i can think about such design:
- server,
- client that needs notifications, register for notifications,
- client that only writes to server, does not register for notifications
- server,
- client that needs notifications, register for notifications,
- client that only writes to server, does not register for notifications
- Tue Apr 20, 2021 4:07 pm
- Forum: General Discussion
- Topic: Adding a Arduino library to ESP-IDF Project
- Replies: 3
- Views: 5197
Re: Adding a Arduino library to ESP-IDF Project
Yes, you can use arduino as component. There is a lot info on internet about it, but to be honest i dont recommend to use ArduinoJson library, because it has not good memory handling. Instead you can use cJSON from esp-idf, which is easy to use. I am using cJSON even in arduino projects whenever i c...
- Tue Apr 20, 2021 4:03 pm
- Forum: ESP-IDF
- Topic: BLE5 - periodic advertising
- Replies: 0
- Views: 1413
BLE5 - periodic advertising
Hi, i am playing a bit with BLE5 features and i am wondering. I understand it is possible to miss some periodic advertising packets, but is it possible it may happen in such situation: - environment: not very crowded - periodic advertising every 1000ms - both peer devices do nothing but advertising/...