HC-05 AT mode works - PSWD command doesn't

Projects Programming
1

I was able to change the name of my HC-05 Bluetooth module in AT mode, using:

Serial.println("AT+NAME=NEWNAME");

HC-05 namely expects \r\n at the end.
Serial.write() doesn't seem to want to transmit these characters.

However, changing the PIN doesn't work.

Using Serial.read(), I wrote the input directly in the terminal with the CR LF option switched on. It didn't work. It did work by using quotation marks: AT+PSWD="9876".

I tried to insert the new findings in my automated program:

Serial.println("AT+PSWD=\"9876\"");

This returns ERROR(1D) or ERROR(0).

Does anyone have an idea why this particular command fails to work, whilst the other commands do work and with the remaining code unchanged?

2

hello Nils345 you need to see this thread:

About HC-05

3

The thread you linked is using Serial.read(), typing the AT commands in the terminal.

I have an issue sending the commands using Serial.println (or Serial.write), after having verified that the terminal method works using Serial.read(), meaning I am using the right commands.

This thread doesn't answer my question.

4

Solved.
I simply needed a small delay between the AT commands, so between NAME and PSWD.