platform/sx240hs/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 void startup() {
  12     long *bss = &link_bss_start;
  13 
  14     // sanity check
  15     if ((long)&link_bss_end > (MEMISOSTART + MEMISOSIZE)) {
  16         started();
  17         shutdown();
  18     }
  19     // initialize .bss senment
  20     while (bss<&link_bss_end)
  21         *bss++ = 0;
  22 
  23     boot();
  24 }
  25 
  26 // Focus length table in firmware 0xfff4bcf0
  27 #define NUM_FL      101 // 0 - 101, entries in firmware  @0xfff4bcf0 using finsig need to be checked
  28 #define NUM_DATA    2   // 2 words each entry, first is FL
  29 extern int focus_len_table[NUM_FL*NUM_DATA];
  30 
  31 //asm1989 done for sx260
  32 // Conversion factor lens FL --> 35mm equiv
  33 // lens      35mm     CF
  34 // ----      ----     --
  35 // 4.5       25       ( 25/ 4.5) * 45 = 250  (min FL)
  36 // 90.0      500      (500/90.0) * 45 = 250  (max FL)
  37 #define CF_EFL      250
  38 #define CF_EFL_DIV  45
  39 
  40 const int zoom_points = NUM_FL;
  41 
  42 int get_effective_focal_length(int zp) {
  43     return (CF_EFL*get_focal_length(zp))/CF_EFL_DIV;
  44 }
  45 
  46 int get_focal_length(int zp) {
  47     if (zp < 0) zp = 0;
  48     else if (zp >= NUM_FL) zp = NUM_FL-1;
  49     return focus_len_table[zp*NUM_DATA];
  50 }
  51 
  52 int get_zoom_x(int zp) {
  53     return get_focal_length(zp)*10/focus_len_table[0];
  54 }
  55 
  56 long get_vbatt_min()
  57 {
  58     return 3300;
  59 }
  60 
  61 
  62 long get_vbatt_max()
  63 {
  64     return 4080;
  65 }

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root/platform/sx240hs/main.c

DEFINITIONS