root/platform/d10/main.c

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DEFINITIONS

This source file includes following definitions.
  1. startup
  2. get_effective_focal_length
  3. get_focal_length
  4. get_zoom_x
  5. get_vbatt_min
  6. 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     long *bss = &link_bss_start;
  15 
  16     // sanity check (pointless with automemiso)
  17     if ((long)&link_bss_end > (MEMISOSTART + MEMISOSIZE)){
  18         started();
  19         shutdown();
  20     }
  21 
  22     // initialize .bss senment
  23     while (bss<&link_bss_end)
  24         *bss++ = 0;
  25 
  26 
  27     boot();
  28 }
  29 
  30 /*
  31 D10 from exif
  32 1/2.3 in sensor 
  33 
  34 6.2/34  f2.8
  35 7.2     f3.2
  36 8.3     f3.2
  37 9.7             f3.5
  38 11.6    f4.0
  39 14.3    f4.5
  40 18.6/104 f4.9
  41 
  42 CF_EFL ~54800-56000
  43 */
  44 
  45 // Focus length table in firmware @0xfffe2a8c
  46 #define NUM_FL      7   // 0 - 6, entries in firmware
  47 #define NUM_DATA    3   // 3 words each entry, first is FL
  48 extern int focus_len_table[NUM_FL*NUM_DATA];
  49 
  50 // Conversion factor lens FL --> 35mm equiv
  51 // lens      35mm     CF
  52 // ----      ----     --
  53 // 6.2       35       ( 35/ 6.2) * 62 = 350  (min FL)
  54 // 18.6      105      (105/18.6) * 62 = 350  (max FL)
  55 #define CF_EFL      350
  56 #define CF_EFL_DIV  62
  57 
  58 const int zoom_points = NUM_FL;
  59 
  60 int get_effective_focal_length(int zp) {
  61     return (CF_EFL*get_focal_length(zp))/CF_EFL_DIV;
  62 }
  63 
  64 int get_focal_length(int zp) {
  65     if (zp < 0) zp = 0;
  66     else if (zp >= NUM_FL) zp = NUM_FL-1;
  67     return focus_len_table[zp*NUM_DATA];
  68 }
  69 
  70 int get_zoom_x(int zp) {
  71     return get_focal_length(zp)*10/focus_len_table[0];
  72 }
  73 
  74 // uses NB-6L, similar specs to NB-5L, copied from sd990 below 
  75 // canon icon blinking at ~3.47, still running at <3.38
  76 long get_vbatt_min()
  77 {
  78     return 3425; // hnikesch on forum
  79 }
  80 
  81 long get_vbatt_max()
  82 {
  83     return 4000; // fresh off charger slightly greater
  84 }

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