uNabto CC3200 Streaming Demo

This project turns the CC3200 into a Nabto streaming echo server. It uses FreeRTOS and leverages the CC3200's hardware accelerated cryptography capabilities.

How to set it up

Step 1: Clone the repository

Hint: Preferably, do this in your Code Composer Studio workspace.

git clone --recursive https://github.com/nabto/unabto-cc3200.git

Step 2: Import Project into Code Composer Studio

1. File > Import
2. Select Code Compose Studio > CCS Projects
3. Press Next
4. Browse... to the unabto-cc3200 folder inside you CCS workspace
5. Untick Copy projects into workspace
6. Press Finish

If your CC3200 SDK is not located in C:/TI/CC3200SDK_1.2.0/cc3200-sdk goto

1. Project > Properties
2. Select Resource > Linked Resources

and fix the Path Variables in order to point to the right directories.

Step 3: Set Wi-Fi SSID and Password

If not done for previous SDK examples, open cc3200-sdk\example\common\common.h and configure the access-point defines SSID_NAME, SECURITY_TYPE and SECURITY_KEY.

Step 4: Set Nabto Device ID and Key

Enter your Device ID and Key from the Nabto Cloud console in unabto_task.c lines 66 and 67:

    char* nabtoId = "<DEVICE ID>";
    const char* presharedKey = "<KEY>";

Step 5: Build the project

Project > Build All.

Step 6: Flash the Image

Please refer to the CC31xx & CC32xx UniFlash Quick Start Guide for flashing the image located in <YOUR-CCS-WORSPACE>\unabto-cc3200\Release\unabto-cc3200.bin.

How to test the application

Using a serial terminal you should see a printout similar to the following every time the CC3200 starts up:

*************************************************
                   CC3200 + uNabto
*************************************************

Host Driver Version: 1.0.1.6
Build Version 2.6.0.5.31.1.4.0.1.1.0.3.34
Device is configured in default state
Device started as STATION
Connecting to AP: ASUS ...
[WLAN EVENT] STA Connected to the AP: ASUS , BSSID: c8:60:0:93:88:f8
[NETAPP EVENT] IP Acquired: IP=192.168.1.18 , Gateway=192.168.1.1
Connected to AP: ASUS
Device IP: 192.168.1.18

Device id: 'deviceid.demo.nab.to'
Program Release 123.456
Application event framework using SYNC model
sizeof(stream__)=u
SECURE ATTACH: 1, DATA: 1
NONCE_SIZE: 32, CLEAR_TEXT: 0
Nabto was successfully initialized
SECURE ATTACH: 1, DATA: 1
NONCE_SIZE: 32, CLEAR_TEXT: 0
State change from IDLE to WAIT_DNS
Resolving dns: deviceid.demo.nab.to
State change from WAIT_DNS to WAIT_BS
State change from WAIT_BS to WAIT_GSP
########    U_INVITE with LARGE nonce sent, version: - URL: -
State change from WAIT_GSP to ATTACHED

Using the Nabto Echo Stream Tester you can now test the echo server by sending and receiving e.g. 1 MB of data:

./echo_stream_tester <DEVICE ID> 1000000