SR110 Platform Guide

This document provides SR110-specific hardware setup and platform notes. For more detailed information on the Astra Machina Micro, see the Astra Machina Micro User Guide:
https://cp.synaptics.com/cognidox/download/NR-160034-MS-APPROVED.pdf

For build, image conversion, flashing, and debugging workflows, use:

Platform Overview

SR110 Specifications

Processor: Arm Cortex-M55 CPU

Memory: External flash (e.g., GD25LE128)

Supported Development Kits: SR110_RDK (Astra Machina Micro SR Series - Rev B/C/E)

Hardware Setup

Astra Machina Micro (SR110 RDK)

SR110 RDK Board

Connection Steps

  1. Power and Debug Connection (J14)

    • Connect Debug IC USB (J14) to your host.

    • J14 is the Debug IC and the onboard USB‑to‑serial bridge.

    • It enumerates as:

      • USB‑HID (CMSIS‑DAP) for SWD debug

      • USB CDC #1: USB‑to‑UART (UART1 on SR110) for console logs

      • USB CDC #2: Debug IC firmware update port

  2. Vision USB CDC streaming (J13)

    • When a vision example is programmed, J13 enumerates as two USB CDC ports:

      • One for Host API control

      • One for image streaming

    • Windows: a driver is required for the streaming port. See the Zadig steps in SR110 Build and Flash with VS Code.

  3. Verify Default Configuration

    • Confirm jumpers and switches are in default positions (see the Astra Machina Micro User Guide).

    • SW1.2 boot mode switch:

      • Position closer to “2”: external flash boot (normal operation)

      • Position closer to “KE”: external host boot (typically UART via J28)

Identify COM Ports

  • Windows: Two COM ports appear in Device Manager (Debug IC FW + serial console).

  • Linux: /dev/ttyACM0, /dev/ttyACM1

  • macOS: /dev/tty.usbmodem*

Note: Vision applications also add two CDC ports on J13 for Host API + image streaming.

Verify Hardware Setup

  1. Confirm the board powers up when J14 is connected.

  2. Verify the COM ports appear on the host.

  3. Open a serial terminal (115200 baud, 8N1) and reset the board to see logs.

References