ESP32 BLE Bonding | PassKey over WiFi
Posted: Fri May 10, 2019 2:30 am
Hello,
Working on a project where I'm connecting an ESP32 to a BLE Device.
The BLE device requires secure connection using passkey, when you connect to it, there is a 6 digit password you must use to complete the bonding.
My ESP32 does not have a keyboard or display, so I want to use the dual mode of the ESP32 and use WiFi SOFT-AP to let a smartphone connect to ESP32, let user type in the password displayed on the screen and send to ESP32 when doing bonding.
However this has proven tricky and cant figure out how or if this is even possible.
Im using this example code for the BLE connection https://github.com/nkolban/esp32-snippe ... asskey.ino
For my onPassKeyRequest() I want to put a delay so I can connect to my smartphone, open the input form and type in the password.
Then when I submit form, my webserver will grab the value and put it into my code global variable and return.
But when I do this vTaskDelay is freeze my Wifi functionality too, so when the delay is done the value isn't updated and the bonding fails.
Is there way to just pause the BLE connection and let the Wifi continue working for this process???
I tried vTaskSuspend/Resume but this didnt work either.
Any advice or suggestions is very appreciated!
Working on a project where I'm connecting an ESP32 to a BLE Device.
The BLE device requires secure connection using passkey, when you connect to it, there is a 6 digit password you must use to complete the bonding.
My ESP32 does not have a keyboard or display, so I want to use the dual mode of the ESP32 and use WiFi SOFT-AP to let a smartphone connect to ESP32, let user type in the password displayed on the screen and send to ESP32 when doing bonding.
However this has proven tricky and cant figure out how or if this is even possible.
Im using this example code for the BLE connection https://github.com/nkolban/esp32-snippe ... asskey.ino
For my onPassKeyRequest() I want to put a delay so I can connect to my smartphone, open the input form and type in the password.
Then when I submit form, my webserver will grab the value and put it into my code global variable and return.
But when I do this vTaskDelay is freeze my Wifi functionality too, so when the delay is done the value isn't updated and the bonding fails.
Is there way to just pause the BLE connection and let the Wifi continue working for this process???
I tried vTaskSuspend/Resume but this didnt work either.
Any advice or suggestions is very appreciated!
Code: Select all
long code = 0;
class MySecurity : public BLESecurityCallbacks {
uint32_t onPassKeyRequest(){
vTaskDelay(15000);
return code;
}
void onPassKeyNotify(uint32_t pass_key){
ESP_LOGE(LOG_TAG, "The passkey Notify number:%d", pass_key);
}
bool onConfirmPIN(uint32_t pass_key){
ESP_LOGI(LOG_TAG, "The passkey YES/NO number:%d", pass_key);
vTaskDelay(5000);
return true;
}
bool onSecurityRequest(){
ESP_LOGI(LOG_TAG, "Security Request");
return true;
}
void onAuthenticationComplete(esp_ble_auth_cmpl_t auth_cmpl){
if(auth_cmpl.success){
ESP_LOGI(LOG_TAG, "remote BD_ADDR:");
esp_log_buffer_hex(LOG_TAG, auth_cmpl.bd_addr, sizeof(auth_cmpl.bd_addr));
ESP_LOGI(LOG_TAG, "address type = %d", auth_cmpl.addr_type);
}
ESP_LOGI(LOG_TAG, "pair status = %s", auth_cmpl.success ? "success" : "fail");
}
};