Search found 105 matches
- Mon Jul 25, 2022 1:32 pm
- Forum: ESP-IDF
- Topic: how can I determine how many files are open on the SD card?
- Replies: 7
- Views: 3951
Re: how can I determine how many files are open on the SD card?
well the subject is the question. I studied a lot. VFS driver etc. may be somebody knows the solution ? I am not aware of any function, but you can take one variable named index.Whenever you open file just increment the index pointer and when ever you closes the file just decrement the index pointe...
- Mon Jul 25, 2022 1:25 pm
- Forum: ESP-IDF
- Topic: gatt_server_service_table cannot change Service And charatteristics
- Replies: 2
- Views: 2003
Re: gatt_server_service_table cannot change Service And charatteristics
I compile and download this gatt_server_service_table example I check form my mobile with BLE Tester I can see all the services and characteristics: Service 000000ff-000-1000-8000-008059b34fb And the following characteristics: 0000FF001-000-1000-8000-008059b34fb 0000FF003-000-1000-8000-008059b34fb ...
- Mon Jul 25, 2022 1:18 pm
- Forum: ESP-IDF
- Topic: File Server shows no files inside the directories
- Replies: 4
- Views: 2959
Re: File Server shows no files inside the directories
Hello, While I'm exploring the file sever example in the SDK: https://github.com/espressif/esp-idf/tree/639e7ad494d93fc82159f9fe854041bc43a96d5f/examples/protocols/http_server/file_serving I was successful in connecting and visualising the files in the base_path. base_path = "/sdcard" However, when...
- Fri Jun 10, 2022 4:51 pm
- Forum: ESP32 Arduino
- Topic: ESP32 connecting with RFID RC522 fails
- Replies: 4
- Views: 8141
Re: ESP32 connecting with RFID RC522 fails
The numbers listed on the drawing are ok, but are not the default. You can supply numbers to SPI when you call begin (https://github.com/espressif/arduino-esp32/blob/master/libraries/SPI/src/SPI.h#L63) SPI.begin(18, 19, 23, 21); //SCK, MISO, MOSI, SS https://randomnerdtutorials.com/esp32-pinout-ref...
- Fri Jun 10, 2022 7:32 am
- Forum: ESP-IDF
- Topic: How to make BLE client connect to only specific server
- Replies: 10
- Views: 11289
Re: How to make BLE client connect to only specific server
@abansal22 I was finally able to form a bond, do you know how to connect to only bonded device. I the thread I mentions said something about a PR but I couldn't find any such PR Good to hear that! I think bonding itself means to connect with the specific device. In the bonding process, they exchang...
- Fri Jun 10, 2022 6:57 am
- Forum: ESP-IDF
- Topic: How to make BLE client connect to only specific server
- Replies: 10
- Views: 11289
Re: How to make BLE client connect to only specific server
I meant, the server and client boots up and connects for first time. The client then stores some info about the server so that it connects to this particular server only (if there are other servers in the vicinity) next time it connects and not to some other server with save service and uuid. May b...
- Fri Jun 10, 2022 6:52 am
- Forum: ESP-IDF
- Topic: How to make BLE client connect to only specific server
- Replies: 10
- Views: 11289
Re: How to make BLE client connect to only specific server
Please can anyone help ? What is mean by specific server. if the server expose the specific uuid, you can filter out. you can use the OOB method to filter out the desired server, you can use the mac of the device to filter it out. how do you want it? I meant, the server and client boots up and conn...
- Fri Jun 10, 2022 6:23 am
- Forum: ESP32 Arduino
- Topic: ESP32 connecting with RFID RC522 fails
- Replies: 4
- Views: 8141
Re: ESP32 connecting with RFID RC522 fails
means you want to connect using the esp-idf?
- Fri Jun 10, 2022 6:21 am
- Forum: ESP-IDF
- Topic: How to make BLE client connect to only specific server
- Replies: 10
- Views: 11289
- Thu Apr 07, 2022 3:54 am
- Forum: ESP-IDF 中文讨论版
- Topic: undefined reference to `app_main'
- Replies: 11
- Views: 42402
Re: undefined reference to `app_main'
I have the exact same issue and I am not using CPP file. c:/espressif/tools/xtensa-esp32-elf/esp-2021r2-patch2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld.exe: esp-idf/freertos/libfreertos.a(port_common.c.obj): in function `main_task': C:/Espress...