Search found 28 matches

by ESP_Tianhao
Tue Sep 04, 2018 4:05 am
Forum: ESP32 Arduino
Topic: BT Classic communication between two ESP32
Replies: 11
Views: 15783

Re: BT Classic communication between two ESP32

So should i upload acceptor file into an ESP32, and upload initator file to an other ESP32? And they can communicate with each other. Am i thinking right? To be honest i want to connect and OBD reader (that has Bluetooth) with an ESP32, but esp must start communicate. I cant upload a code into OBD ...
by ESP_Tianhao
Fri Aug 31, 2018 10:47 am
Forum: ESP32 Arduino
Topic: BT Classic communication between two ESP32
Replies: 11
Views: 15783

Re: BT Classic communication between two ESP32

Could you test the SPP demos (receiver and initiator) in official ESP-IDF master branch or release/v3.1 or other branches?

All of the same problems happened with Arduino platform?
by ESP_Tianhao
Fri Aug 31, 2018 2:44 am
Forum: General Discussion
Topic: ESP32 simultaneous a2dp sink/source?
Replies: 5
Views: 3189

Re: ESP32 simultaneous a2dp sink/source?

As far as now, A2DP sink and source cannot work simultaneously. This work is in evaluating.
by ESP_Tianhao
Tue Aug 21, 2018 9:04 am
Forum: ESP-IDF
Topic: WIFI/BLE Simultaneously
Replies: 62
Views: 54324

Re: WIFI/BLE Simultaneously

Hi Loboris or Kolban or Espressif Developer, Could you guys please provide some more useful and fruitful informations regarding how WiFi and BLE are working together from Architecture Point of View? So that ESP32 Users might have better idea and will have clear understanding regarding that. I can d...
by ESP_Tianhao
Thu Nov 23, 2017 8:58 am
Forum: ESP-IDF
Topic: LoadProhibited error in r_rw_schedule
Replies: 1
Views: 1522

Re: LoadProhibited error in r_rw_schedule

Hi, slivingston,
Could you provide your elf file? It could help me debug it. Thanks.
by ESP_Tianhao
Mon Oct 23, 2017 7:32 am
Forum: General Discussion
Topic: Simultaneous WiFi and Bluetooth: Paket loss and WiFi disconnects
Replies: 7
Views: 6119

Re: Simultaneous WiFi and Bluetooth: Paket loss and WiFi disconnects

Hi, BR/EDR and WIFI coexistence performance is in optimizing on ESP32.
There's a option in menuconfig "Software controls WiFi/Bluetooth coexistence" may do something positive impact. But there's a known bug. We are doing the second phase to optimize the performance of Bluetooth & WIFI coexistence.
by ESP_Tianhao
Thu Jul 20, 2017 3:16 am
Forum: ESP-IDF
Topic: [Answered]: Release of memory passed by reference to ESP-IDF functions
Replies: 5
Views: 3671

Re: [Question]: Release of memory passed by reference to ESP-IDF functions

Thank you, Kolban. Actually, we usually follow this rule: who allocate memory, who free memory. For `esp_ble_gatts_add_char()`, is the same, char_uuid (point) need to free by application, if application malloc it. If there's some special usage, we will specify it in comment. If we don't , it's our m...
by ESP_Tianhao
Thu Jun 29, 2017 7:43 am
Forum: ESP-IDF
Topic: [Info]: BLE: service_uuid_len must be multiple of 16
Replies: 4
Views: 4000

Re: [Info]: BLE: service_uuid_len must be multiple of 16

all 16bit(2bytes) and 32bit(4byte) are simplified by 128bit(16bytes) UUID. For example (in ESP-IDF bluetooth/gatt_server demo) static uint8_t test_service_uuid128[32] = { /* LSB <--------------------------------------------------------------------------------> MSB */ //first uuid, 16bit, [12],[13] i...
by ESP_Tianhao
Thu Jun 29, 2017 7:20 am
Forum: ESP-IDF
Topic: [Answered] BLE: Associating a descriptor with a characteristic
Replies: 1
Views: 2404

Re: BLE: Associating a descriptor with a characteristic

Now, there's two ways to add characteristics and descriptors. 1. use legacy way: Just use `esp_ble_gatts_add_char` and `esp_ble_gatts_add_char_descr`. Descriptor should add follow Characteristic. If there's multi descriptors, for example, there're 3 descriptors (A, B, C). A should add following thei...
by ESP_Tianhao
Tue Mar 07, 2017 10:37 am
Forum: ESP-IDF
Topic: NVDS MAGIC FAILED issue with latest esp-idf
Replies: 9
Views: 6341

Re: NVDS MAGIC FAILED issue with latest esp-idf

I have try the GATT_SERVER demo after commit (61c7bd3), there's no problem in mine.
After this commit, we change something about RF/PHY initialize flow and maybe do some change about NVS.
I think you should erase all the flash , then download the ESP-IDF bin.

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