client/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         write_byte('s');
  41         write16(sdss[cs].id);
  42         write_byte('\n');
  43 }
  44
  45 void sds_delete(void)
  46 {
  47         uint8_t cs;
  48         cs = read16();
  49         sdss[cs].used = false;
  50         write_byte('a');
  51         write16(sdss[cs].id);
  52         write_byte('\n');
  53 }
  54
  55 bool sds_update(void)
  56 {
  57         uint8_t cs, id;
  58         //Read identifier
  59         id = read16();
  60
  61         for(cs = 0; cs<MAXSDSS; cs++){
  62                 if(!sdss[cs].used)
  63                         continue;
  64                 if(sdss[cs].id == id){
  65                         //Read value
  66                         sdss[cs].value = read16();
  67                         debug("Received sds update %d: %d",
  68                               sdss[cs].id, sdss[cs].value);
  69                         write_byte('u');
  70                         write16(sdss[cs].id);
  71                         write_byte('\n');
  72                         return true;
  73                 }
  74         }
  75         return false;
  76 }
  77
  78 void sds_publish(int id)
  79 {
  80         uint8_t cs;
  81         for(cs = 0; cs<MAXSDSS; cs++){
  82                 if(sdss[cs].used && sdss[cs].id == id){
  83                         debug("Publish %d=%d", sdss[cs].id, sdss[cs].value);
  84                         write_byte('p');
  85                         write16(sdss[cs].id);
  86                         write16(sdss[cs].value);
  87                         write_byte('\n');
  88                         return;
  89                 }
  90         }
  91         debug("SDS identifier unknown: %d", id);
  92         die("");
  93 }
  94
  95 int sds_fetch(int id)
  96 {
  97         uint8_t cs;
  98         for(cs = 0; cs<MAXSDSS; cs++)
  99                 if(sdss[cs].used && sdss[cs].id == id)
 100                         return sdss[cs].value;
 101         debug("SDS identifier unknown: %d", id);
 102         die("");
 103         return 0;
 104 }
 105
 106 void sds_store(int id, int val)
 107 {
 108         uint8_t cs;
 109         for(cs = 0; cs<MAXSDSS; cs++) {
 110                 if(sdss[cs].used && sdss[cs].id == id){
 111                         sdss[cs].value = val;
 112                         return;
 113                 }
 114         }
 115         debug("SDS identifier unknown: %d", id);
 116         die("");
 117 }