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.

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
Figure 1. 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 (230400 baud, 8N1) and reset the board to see logs.

References