Layered Architecture

FEAST uses a layered approach where each layer provides services to the layer above it:

1. Hardware Layer (BREADS): Physical devices, sensors, actuators, and mechanical interfaces
2. Firmware Layer (FROOTS): Device control logic, real-time operations, and hardware abstraction
3. Middleware Layer (PROTINS): Device orchestration, communication protocols, and runtime management
4. Software Layer (SUGIRS): User interfaces, monitoring systems, and business logic

Hierarchical Organization

Systems are organized hierarchically to manage complexity and enable scalability:

• Module Level (SLICE): Single-function modules (e.g., temperature sensor, motor controller)
• Device Level (LOAF): Local systems combining multiple SLICE modules to form a cohesive device (e.g., standalone machine, test bench)
• System Level (BATCH): Coordinated groups of LOAF devices working together as an integrated system (e.g., production line, multi-station cell)
• Facility Level (OVEN): Facility-wide networks of BATCH systems (e.g., entire factory, campus)