DevGuide/DesignOverview

Functional Diagram

Design Goals

-Static approach
-Modularity
-Hardware absraction
-Runtime efficiency

Static Approach

 -only "things that needs to be changed during flight are changeable
 -maximise compilation time resolutions

 advantages
   Error checking
   Efficiency
   Safety/Robustness

Modularity

 -Separation of concerns
 -Maintenability
 -Interface
 -C provide no dedicated mechanism for modularity
 -Main issues with modularity are configuration and dependancies

Hardware abstraction

 -Segregate hardware dependant modules

Runtime Efficiency

 bad :
switch(UART) {
 case UART0 : UARTO_write(...); break;
 case UART1 : UART1_write(...); break;
}

 good :
#define UartWrite(x) UART ## _write(x)
UartWrite(...);