Someone can help me ?

Hi everyone,

I'm working with ESP32 using sample project "gatt_server_service_table". I have a service with 4 characteristic. Now, I want to write data to characteristic. I use this function in event : ESP_GATTS_READ_EVT
esp_ble_gatts_get_attr_value(uint16_t attr_handle, uint16_t *length, const ...

The handle of the characteristic is stored in the attribute handle table returned after ESP_GATTS_CREAT_ATTR_TAB_EVT:


heart_rate_handle_table[CHARACTERISTIC_ENUM_VALUE]

will return the handle for CHARACTERISTIC_ENUM_VALUE.
Hi halfro,
Thanks for your response.But I can't get handle. I want to ...

Hi everyone,
I'm working with ESP32 using sample project "gatt_server_service_table". I have a service with 4 characteristic. Now, I want to write a string to characteristic. This is my code in event :ESP_GATTS_READ_EVT
ESP_LOGI(GATTS_TAG, "GATT_READ_EVT, conn_id %d, trans_id %d, handle %d\n ...

Howdy,
What kind of help do you need?

Loosely, think of a characteristic in BLE as a variable that contains byte data. The "name" of the variable is the characteristic UUID (the 128 bits of data of the form 1322b5aa-d1b3-450c-addc-c8f4c80dbb3c). The BLE server maintains that data and the BLE ...

Howdy,
What kind of help do you need?

Loosely, think of a characteristic in BLE as a variable that contains byte data. The "name" of the variable is the characteristic UUID (the 128 bits of data of the form 1322b5aa-d1b3-450c-addc-c8f4c80dbb3c). The BLE server maintains that data and the BLE ...

Hi everyone,

I have started a project use wifi and ble. My esp32 will scan and send list of Access points to my smartphone via BLE. I will choose AP in smartphone then esp32 will conect with that AP. I can get AP list form Wifi but I don't know how to write AP list to Characteristic in BLE. Someone ...