CC3220SF-LAUNCHXL: CC3220SF: CC3220sf-Wifi door lock demo - Connection to broker failed, Error code: -111 BRIDGE DISCONNECTION

Hello everyone,

I have been working on CC3220SF  using the cc3220sf Launchpad.

Now i am building my application on the reference design (TI Designs: TIDC-01005 Battery-Powered, Smart-Lock Reference Design With Cloud Connectivity Using SimpleLink™ Wi-Fi) which is built on CC3220S.

i have downloaded the code and imported to my workspace  and I have changed the device to CC3220SF from CC3220S in properties and have added the required .cmd file(CC3220SF_LAUNCHXL_TIRTOS.cmd)  and have built it successfully after adding the required SDK and other plugins without errors and i am able to debug the code in CCS.

ISSUE1:

When i started to test the wifi door lock project it was  getting stuck at SetTopicNames() after entering the sprintf as mentioned below ..

sprintf(topic[1], SUBSCRIPTION_TOPIC1, App_CB.lockUDID[0],
App_CB.lockUDID[1], App_CB.lockUDID[2], App_CB.lockUDID[3],
App_CB.lockUDID[4], App_CB.lockUDID[5], App_CB.lockUDID[6],
App_CB.lockUDID[7], App_CB.lockUDID[8], App_CB.lockUDID[9],
App_CB.lockUDID[10], App_CB.lockUDID[11], App_CB.lockUDID[12],
App_CB.lockUDID[13], App_CB.lockUDID[14], App_CB.lockUDID[15]);

but for the meantime after i commented the SetTopicNames() the code started running.

according to my observation the device id which i'm getting is not been able to copy into the subscription topic.

ISSUE2:

After commenting SetTopicNames()  i have tested the mqtt without the security using the "test.mosquitto.org" and was successful in publish and subscribe using topics.

Now i want to test with security i have downloaded the certificate  and using "m2m.eclipse.org "and have followed the http://dev.ti.com/tirex/content/simplelink_academy_cc32xxsdk_2_30_00_02/modules/wifi/wifi_mqtt/wifi_mqtt.html MQTT academy steps and getting error in connecting the broker.

[MQTT Thread] MQTT Client library initialized successfully<\r><\n><\r><9>

[MQTT Thread] Connection to broker failed, Error code: -111<\r><\n><\r>

BRIDGE DISCONNECTION<\n><\r><\r><\r><\n><\r>

i am debugging directly using Code composer studio and

In the code i have defined secured client and i have given my certificate path directly ( i hope that's also the correct way) other than using uniflash

char *Mqtt_Client_secure_files[CLIENT_NUM_SECURE_FILES] = {"D:/mqttlockcert/lockmqtt.cer"};

ISSUE3:

My application only needs AP provisioning and MQTT in particular so i have disabled BLE provision and other things which i don't need for now.

if BLE provision is disabled does it directly go to the AP provisioning without pressing the SW3 button?

Now my device is provisioned to a particular AP profile which will be stored in serial flash so that when the device gets boot up will be connected to that profile.

My question is if i need to provision the device into a new profile how can that be done or how to remove the saved profile in serial flash so that i can provison it to new profile using AP provision using simplelink starter pro application in mobile?

ISSUE 4:

I am not able to flash the bin file(507Mb) using Uniflash as it is throwing the Error

Error:MCU Image file exceeds the maximum size for this device

Regards,

Sanath Rai