There’s some more reading matter for you in the Dev Center:
• Troubleshooting Device-to-Agent Data Transfers – How to manage the imp’s TCP send buffer
• Device Sleep and Pause States Explained – How impOS and Squirrel manage low-power modes
You might also like to take a look at our Hardware Reference page, which now includes a completely revamped and updated series of guides written to help you with your imp001, imp002 or imp003-based designs – plus updated guides covering development points that apply to all imp-based projects.
Tony