MSP432E401Y: Unable to connect to AWS IoT Core using MQTT

Sebastian

Part Number: MSP432E401Y
Other Parts Discussed in Thread: MSP-EXP432E401Y, SYSCONFIG

Hello,

I have a MSP-EXP432E401Y Development Kit and am attempting to use the mqtt_client example to communicate with the AWS Iot.

So far I have set up the AWS side with certificates and policies and have verified that they work using an MQTT ide on my computer. The mqtt_client example successfully communicated with a mqtt broker running on the local network using non-secure sockets. The sysconfig was modified to enable secure sockets and the CA, certificate, and private key were all added to the project along with modifying the server address to my AWS link.

Anytime I try to run the code I get a "Connection to broker failed, Error code: -2006" message repeating.

I am not sure what I am doing wrong or what the error codes represent. Any help would be appreciated.

I am using:

Code Composer Studio v12.60

SimpleLink MSP432E4 SDK v4.20.0.12

over 1 year ago

0 Charles Tsai over 1 year ago

TI__Guru**** 191296 points

Hi,

I don't have experience with AWS broker. Not sure what the problem is.

Do you have the same error connecting to AWS broker without the secure socket?

Have you tried the secure socket with the test.mosquitto.org or other brokers other than AWS? Do you see the same error?

I find this post that talks about mqtt_client that use test.mosquitto.org. Maybe it will help. Other than this, I'm not sure how to help you diagnose the problem.

https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1230123/msp-exp432e401y-mqtt-connection-error

0 Sebastian over 1 year ago in reply to Charles Tsai

Prodigy 40 points

Hi Charles,

All connections to AWS must be secure. As far as I'm aware there's no way to do it without using TLS.

Yes. I am able to connect to the Mosquitto test broker with both unsecure and secure connections. I am also able to connect to the HiveMQ Public Broker and a broker running on my computer on the local network.

From what I can tell, the secure connection to the Mosquitto broker only requires the CA certificate while connecting to the AWS broker requires a CA, client certificate, and private key.

Arm-based microcontrollers

Arm-based microcontrollers forum

MSP432E401Y: Unable to connect to AWS IoT Core using MQTT