int/sds.c

   1 #include <stdlib.h>
   2 #include <string.h>
   3
   4 #ifndef STM
   5 #include <unistd.h>
   6 #include <stdio.h>
   7 #endif
   8
   9 #include "interface.h"
  10 #include "interpret.h"
  11 #include "sds.h"
  12
  13 struct sds sdss[MAXSDSS];
  14 uint8_t c;
  15
  16 void sds_init(void)
  17 {
  18         memset(&sdss, 0, sizeof(struct sds)*MAXSDSS);
  19 }
  20
  21 void sds_register(void)
  22 {
  23         uint8_t cs;
  24         for(cs = 0; cs<MAXSDSS; cs++)
  25                 if(!sdss[cs].used)
  26                         break;
  27
  28         if(cs == MAXSDSS)
  29                 die("Trying to add too much sdss...");
  30
  31         memset(&sdss[cs], 0, sizeof(struct sds));
  32         //Read identifier
  33         sdss[cs].id = read16();
  34         //Read value
  35         sdss[cs].value = read16();
  36
  37         debug("Received sds %d: %d", sdss[cs].id, sdss[cs].value);
  38         sdss[cs].used = true;
  39 }
  40
  41 bool sds_update(void)
  42 {
  43         uint8_t cs, id;
  44         //Read identifier
  45         id = read16();
  46
  47         for(cs = 0; cs<MAXSDSS; cs++){
  48                 if(!sdss[cs].used)
  49                         continue;
  50                 if(sdss[cs].id == id){
  51                         //Read value
  52                         sdss[cs].value = read16();
  53                         debug("Received sds update %d: %d",
  54                               sdss[cs].id, sdss[cs].value);
  55                         return true;
  56                 }
  57         }
  58         return false;
  59 }
  60
  61 void sds_publish(int id)
  62 {
  63         uint8_t cs;
  64         for(cs = 0; cs<MAXSDSS; cs++){
  65                 if(sdss[cs].used && sdss[cs].id == id){
  66                         debug("Publish %d=%d", sdss[cs].id, sdss[cs].value);
  67                         write_byte('u');
  68                         write16(sdss[cs].id);
  69                         write16(sdss[cs].value);
  70                         write_byte('\n');
  71                         return;
  72                 }
  73         }
  74         debug("SDS identifier unknown: %d", id);
  75         die("");
  76 }
  77
  78 int sds_fetch(int id)
  79 {
  80         uint8_t cs;
  81         for(cs = 0; cs<MAXSDSS; cs++)
  82                 if(sdss[cs].used && sdss[cs].id == id)
  83                         return sdss[cs].value;
  84         debug("SDS identifier unknown: %d", id);
  85         die("");
  86         return 0;
  87 }
  88
  89 void sds_store(int id, int val)
  90 {
  91         uint8_t cs;
  92         for(cs = 0; cs<MAXSDSS; cs++) {
  93                 if(sdss[cs].used && sdss[cs].id == id){
  94                         sdss[cs].value = val;
  95                         return;
  96                 }
  97         }
  98         debug("SDS identifier unknown: %d", id);
  99         die("");
 100 }