Ok, So here we are again. The RSS has raised it's head one last time.. This time we will slay it.. So onward and upward. 
First I have talked about this part of the puzzle more than a few times.. Well spurned on by my CDU_IOP, I thought that since the CDU_IOP was designed with modularity in mind I rewrote my RSS_IOP to take advantages of things that I have learnt along the way.
CODE SEGMENTS: First we have to talk about the model or the structure of the radios.
| rss.h | add a few radios | Our main.c |
|---|---|---|
struct rss_s { char * device_info; char * device_model; char * device_serial; int power_48v; int power_400hz; int panel_lamps; void * radio_info; int sub_devices; int panel_lamp; struct device_s { int fd[ FD_pair ]; int frequency[ tuned ]; int dial_lamp; }sub_device[]; } | struct radio_G3713 { int sw_VHF_NAV; int sw_VOR_TEST; int sw_DME_TEST; int sw_DME_STBY; int sw_UP; int sw_DOWN; int vhf_dial_lamp; int nav_dial_lamp; }
struct radio_G3490 { int sw_com1_test; int sw_com2_test; int sw_nav1_test; int sw_nav2_test; int sw_comm_sel; int led_nav1; int led_nav2; int dial_lamp_com1; int dial_lamp_com2A; int dial_lamp_com2B; int dial_lamp_nav1; int dial_lamp_nav2; }; | int main(int argc, char *argv[]){
max_fd = 0; int ecode;
static struct radio_G3713 G_3713; static struct radio_G3490 G_3490;
static struct rss_s radios[] = { { "COM/NAV #1", "G-3717", "81", 0, 0, 0, & G_3713, 2, }, { "5in1", "G-3490", "31", 0, 0, 0, & G_3490, 4, }, };
int i, j; // loop over the installed Radios and sub radios for( i = 0; i < DIM( radios ); i++ ){ // RADIOS for ( j = 0; j < radios[i].sub_devices; j++ ) { // SUB DEVICES if( init( radios[i].sub_device[j] ) == ERROR ){ perror( "Initialization failed"); return( ERROR ); }}}
do{ // test for power errors /*if (( p400 = power_buss_400hz()) || ( p48 = power__buss_48v() != OFF )) { if( !p400 ){ error_msg() } } */
// iop retruns with error TBD!! } while( ecode != ERROR ); } |
You will notice that in rss_s structure is an array, and each array member is a radio, and each radio can have 'sub devices' that is one or more tuner(s). Lastly in the rss.h there is a pointer to radio_info but its a void type (this is a place holder only and we will have to cast it to one of the radios in column two).
 |
Gables G-3713 Fig 1. |
Well as you can see in Fig 1. and they looking at struct radio_G3713, you will notice a one to one instance between a switch and its description in the code segments. For instance if you look a Fig 1. and see the 'DME TEST' push button, in the lower right, and you see in the code above 'int sw_DME_TEST;' This is the same for every switch on the radio. The frequency dial is handled by ARINC-410 code which is a 2 out of 5 negative going code.
Keep tuned in more to come
~ Cris
3/30/2114 Major changes to the rss data structures.
- removed this from rss.s: and added it to all of the radio_ xxxxxx structure(s).
struct device_s
int fd[ FD_pair ];
int frequency[ tuned ]
int dial_lamp;}sub_device[]; - In main.c the second for loop has been eliminated.
for ( j = 0; j < radios[i].sub_devices; j++ ) { // SUB DEVICES - This also changes the next line of code from:
if( init( radios[i].sub_device[j] ) == ERROR ){
to:
if( rss_init( radios[i] ) == ERROR ){
