platform/ixus115_elph100hs/main.c

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This source file includes following definitions.

startup
get_effective_focal_length
get_focal_length
get_zoom_x
get_vbatt_min
get_vbatt_max

   1 #include "lolevel.h"
   2 #include "platform.h"
   3 #include "core.h"
   4 #include "keyboard.h"
   5 
   6 
   7 extern long link_bss_start;
   8 extern long link_bss_end;
   9 extern void boot();
  10 
  11 
  12 void startup()
  13 {
  14 
  15         long *bss = &link_bss_start;
  16 
  17         // sanity check
  18         if ((long)&link_bss_end > (MEMISOSTART + MEMISOSIZE)){
  19                 started();
  20                 shutdown();
  21         }
  22 
  23         // initialize .bss senment
  24         while (bss<&link_bss_end)
  25                 *bss++ = 0;
  26 
  27         boot();
  28 }
  29 
  30 
  31 // Focus length table
  32 #define NUM_FL    10   // number of entries in focal length table
  33 #define NUM_DATA  3    // 3 words in each entry, first is FL
  34 
  35 extern int focus_len_table[NUM_FL*NUM_DATA];
  36 // Focal length range is 5.0 - 20,0 mm, 28 - 112 in 35-mm equivalent according to Canon's published specs
  37 
  38 // Conversion factor lens FL --> 35mm equiv
  39 // lens      35mm     CF
  40 // ----      ----     --
  41 // 5.0       28       (  28 / 5.0)  * 50 = 280  (min FL)
  42 // 20.0      112      ( 112 / 20.0) * 50 = 280  (max FL)
  43 
  44 #define CF_EFL      280
  45 #define CF_EFL_DIV  50
  46 
  47 
  48 const int zoom_points = NUM_FL ;
  49 
  50 int get_effective_focal_length(int zp) {
  51         return (CF_EFL*get_focal_length(zp))/CF_EFL_DIV;
  52 }
  53 
  54 int get_focal_length(int zp) {
  55         if (zp < 0) zp = 0;
  56         else if (zp >= NUM_FL) zp = NUM_FL-1;
  57         return focus_len_table[zp*NUM_DATA];
  58 }
  59 
  60 int get_zoom_x(int zp) {
  61         return get_focal_length(zp)*10/focus_len_table[0];
  62 }
  63 
  64 long get_vbatt_min()
  65 {
  66         return 3280;  // min observed was 3.408, then it died
  67 }
  68 
  69 long get_vbatt_max()
  70 {
  71         return 4057;  // fresh from change (actual was 4.127)
  72 }

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root/platform/ixus115_elph100hs/main.c

DEFINITIONS