Linux Appliance Design

14.1. Our Goal

In Chapter 5 you saw several of the Laddie application's user interfaces to the ZONE structure: framebuffer, CLI, and web. Here's the ZONE struct from the Laddie source:

typedef struct
{
    int    id;         // ID number of alarm [1-5]
    char   name[ZONE_NAME_LEN];  // the alarm name
    int    enabled;    // 1 if enabled
    int    edge;       // 1 if alarm on low to high transition
    int    latching;   // 1 if should latch the alarm
    int    input;      // is the latest raw input from the alarm
    int    alarm;      // 1 if in alarm
    int    count;      // count of alarms on this pin
}
ZONE;

Figure 14-1 shows how this looked in the RTA table editor.

Figure 14-1. The ZONE struct in the RTA table editor

Jumping ...