root/platform/sx700hs/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 void startup() {
  12     long *bss = &link_bss_start;
  13 //    *(int*)0xd20b0994 = 0x4d0002;
  14 
  15     // sanity check
  16     if ((long)&link_bss_end > (MEMISOSTART + MEMISOSIZE)) {
  17         started();
  18         shutdown();
  19     }
  20     // initialize .bss senment
  21     while (bss<&link_bss_end)
  22         *bss++ = 0;
  23 //    *(int*)0xd20b0994 = 0x4d0002;
  24     boot();
  25 }
  26 
  27 #define NUM_FL      113 // From physw_status
  28 #define NUM_DATA    2   // 2 words each entry, first is FL
  29 extern int focus_len_table[NUM_FL*NUM_DATA];
  30 
  31 // Conversion factor lens FL --> 35mm equiv
  32 // lens      35mm     CF
  33 // ----      ----     --
  34 //  4.5      25       ( 25/  4.5) * 180 = 1000  (min FL)
  35 //135.0     750       (750/135.0) * 180 = 1000  (max FL)
  36 
  37 #define CF_EFL      1000
  38 #define CF_EFL_DIV  180
  39 
  40 const int zoom_points = NUM_FL;
  41 
  42 
  43 int get_effective_focal_length(int zp) {
  44     return (CF_EFL*get_focal_length(zp))/CF_EFL_DIV;
  45 }
  46 
  47 int get_focal_length(int zp) {
  48     if (zp < 0) zp = 0;
  49     else if (zp >= NUM_FL) zp = NUM_FL-1;
  50     return focus_len_table[zp*NUM_DATA];
  51 }
  52 
  53 int get_zoom_x(int zp) {
  54     return get_focal_length(zp)*10/focus_len_table[0];
  55 }
  56 
  57 long get_vbatt_min()
  58 {
  59     return 3200; //3100 is red in Canon display
  60 }
  61 
  62 
  63 long get_vbatt_max()
  64 {
  65 
  66     return 4060;  //8300
  67 }

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