Abstract: A security system for a building includes a plurality of lock modules. Each lock module is associated with a particular door and has an unlocked position and a locked position. Each lock module includes a lock bar, an actuator, and a controller. The lock bar has a first position that allows the particular door to open and a second position that extends from a door frame, a wall, or a floor surface adjacent to the particular door to prevent the particular door from opening. The actuator moves the lock bar between the first and second positions. The controller is operably connected to the actuator and transmits a door status signal that uniquely identifies the particular door. A lock module command signal received by the plurality of lock modules directs the plurality of lock modules to reposition to either the unlocked position or the locked position.

Abstract: A security system for a building has multiple lock modules. Each lock module is associated with a particular door and has an unlocked position that allows the particular door to open and a locked position that prevents the particular door from opening. Each lock module includes a door status signal and a controller. The door status signal includes a unique identifier for the particular door associated with the lock module and a status that identifies when the lock module is in the locked position. The controller transmits the door status signal for the lock module. A lock module command signal received by at least some of the lock modules directs at least some of the lock modules to reposition to either the unlocked position or the locked position.

Abstract: A security system for a building includes a plurality of lock modules. Each lock module is associated with a particular door and has an unlocked position and a locked position. Each lock module includes a lock bar, an actuator, and a controller. The lock bar has a first position that allows the particular door to open and a second position that extends from a door frame, a wall, or a floor surface adjacent to the particular door to prevent the particular door from opening. The actuator moves the lock bar between the first and second positions. The controller is operably connected to the actuator and transmits a door status signal that uniquely identifies the particular door. A lock module command signal received by the plurality of lock modules directs the plurality of lock modules to reposition to either the unlocked position or the locked position.

Abstract: A security system for a building has multiple lock modules. Each lock module is associated with a particular door and has an unlocked position that allows the particular door to open and a locked position that prevents the particular door from opening. Each lock module includes a door status signal and a controller. The door status signal includes a unique identifier for the particular door associated with the lock module and a status that identifies when the lock module is in the locked position. The controller transmits the door status signal for the lock module. A lock module command signal received by at least some of the lock modules directs at least some of the lock modules to reposition to either the unlocked position or the locked position.

Abstract: A generic interface layer for providing a generic interface to a hardware environment for a program executing on the hardware environment. The generic interface layer, is interrupt-driven. It includes driver code for devices in the hardware environment that is executed in response to software interrupts from the program and interrupt handling code for handling interrupts from the hardware environment. The interrupt handling code responds to an interrupt by calling a callback in the program. The generic interface layer includes a loader for loading the program and a debugger for controlling execution of the program. Execution of code in the generic interface layer may be coordinated by the system timer interrupt code that is executed in response to a system timer interrupt. Code that is executing in the generic interface layer may register itself or other code with the system timer interrupt code, which then executes the code in response to a system timer interrupt.