root/platform/sx280hs/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     // sanity check
  14     if ((long)&link_bss_end > (MEMISOSTART + MEMISOSIZE)) {
  15         started();
  16         shutdown();
  17     }
  18     // initialize .bss senment
  19     while (bss<&link_bss_end)
  20         *bss++ = 0;
  21     boot();
  22 }
  23 
  24 #define NUM_FL      101
  25 #define NUM_DATA    2   // 2 words each entry, first is FL
  26 extern int focus_len_table[NUM_FL*NUM_DATA];
  27 
  28 //asm1989 done for sx260
  29 // Conversion factor lens FL --> 35mm equiv
  30 // lens      35mm     CF
  31 // ----      ----     --
  32 // 4.5       25       ( 25/ 4.5) * 45 = 250  (min FL)
  33 // 90.0      500      (500/90.0) * 45 = 250  (max FL)
  34 #define CF_EFL      250
  35 #define CF_EFL_DIV  45
  36 
  37 const int zoom_points = NUM_FL;
  38 
  39 int get_effective_focal_length(int zp) {
  40     return (CF_EFL*get_focal_length(zp))/CF_EFL_DIV;
  41 }
  42 
  43 int get_focal_length(int zp) {
  44     if (zp < 0) zp = 0;
  45     else if (zp >= NUM_FL) zp = NUM_FL-1;
  46     return focus_len_table[zp*NUM_DATA];
  47 }
  48 
  49 int get_zoom_x(int zp) {
  50     return get_focal_length(zp)*10/focus_len_table[0];
  51 }
  52 
  53 long get_vbatt_min()
  54 {
  55     return 3300;
  56 }
  57 
  58 
  59 long get_vbatt_max()
  60 {
  61     return 4168;  // 4168 original battery just charged ASM1989
  62 }

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