MQTT clientID, USER and Password

I am confused that in the CONNECT packet structure for MQTT, 3 parameters are required: ClientID , USER and Password (Assume flags TRUE) . But from my account on Thingspeak, I could not find and distinguise various API KEYs and IDs, whichone to use where ?

My Account on Thingspeak:

Channel:

1. ChannelID = 153xxxx
2. WRITE API KEY: UEL......
3. . READ API KEY: R46......

Click on Profile:

1. Username: mwa.....
2. User API Key: AFKB......

MQTT: I created a MQTT device with above Channel. It has :

1. ClientID: CCw.......
2. Usename: CCw.......
3. Password: 5O.....

Now, which parameters required in CONNECT packet, PUBLISH packet and SUBSCRIBE packet ?

Answer 1

[Christopher Stapels]

Have a look at the MQTT API page. The MQTT basics pageshows you the parameters you need as well as the publish and subscribe pages.