platform/a810/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 {
  13 
  14         long *bss = &link_bss_start;
  15 
  16         // sanity check
  17         if ((long)&link_bss_end > (MEMISOSTART + MEMISOSIZE)){
  18                 started();
  19                 shutdown();
  20         }
  21         // initialize .bss senment
  22         while (bss<&link_bss_end)
  23                 *bss++ = 0;
  24 
  25         boot();
  26 }
  27 
  28 // Focus length table in firmware 0xfffeabc8
  29 #define NUM_FL      64 // 0 - 63, entries in firmware
  30 #define NUM_DATA    2   // 2 words each entry, first is FL
  31 extern int focus_len_table[NUM_FL*NUM_DATA];
  32 
  33 // Conversion factor lens FL --> 35mm equiv
  34 // lens      35mm     CF
  35 // ----      ----     --
  36 //  5         28      ( 28/ 5) * 60 = 336  (min FL)
  37 // 25        140      (140/25) * 60 = 336  (max FL)
  38 #define CF_EFL      336
  39 #define CF_EFL_DIV  60
  40 
  41 const int zoom_points = NUM_FL;
  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 2400;
  60 }
  61 
  62 long get_vbatt_max()
  63 {
  64     return 2700;

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root/platform/a810/main.c

DEFINITIONS