![]() initialize Serial3 communication of bluetooth which is on Serial3 3: The LED on HC-05 starts blinking after everyĢ seconds approx, this blink is different from the blink of led in pairing mode. Release the button after that.Ģ) One can also connect 5V to EN/KEY pin of HC-05 to bring it in AT mode. If the led of bluetooth starts blinking after timeĭuration of two seconds then bluetooth is in AT mode. It in pushed state even after powering it. There are two ways of getting Bluetooth in ATmode:ġ) For getting HC-05 in AT mode press the push button on HC-05 before powering it and keep In order to change all this parameters it is necessary to make sure that HC-05 This example changes some configurations like name, baud rate, password of But this command works on only some firmware versions of Bluetooth.Īn example of using the evive to Setup HC-05 Bluetooth. Actually “AT+INIT\r\n” is for getting Bluetooth in pairing mode.But this time without pressing the push button of Bluetooth. In that case, just unplug Hc-05 and plug it again in evive. Note: After Bluetooth gets “AT+INIT\r\n” command if the led still blinks in the same pattern as in AT mode it means that Bluetooth is still in AT mode and not in pairing mode. For each command sent to Hc-05 if it responds successfully, its response is printed on the Serial monitor. As evive gets a proper response it sends the next command. evive continuously sends one type of AT command until it gets the response from Hc-05. ![]() As soon as the code is uploaded open the Serial monitor and set the baud rate of the serial monitor to the value written in Serial.begin().AT Command for displaying the address of Bluetooth is also given. Once the Bluetooth goes into AT mode it gets AT commands from evive to change the name, password, and baud rate of evive.As mentioned in the point above that Bluetooth always communicates at baud rate of 38400 in AT mode hence baud of communication between evive and Bluetooth is set to 38400 in command Serial3.begin(38400) ”.This will be clear from the example given below. For example, if you want to send the command “AT+NAME=evive” then it should be sent like “AT+NAME=evive\r\n”. ![]()
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