root/platform/s110/main.c

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"
   7 extern long link_bss_start;
   8 extern long link_bss_end;
   9 extern void boot();
  12 void startup()
  13 {
  14         long *bss = &link_bss_start;
  16         // sanity check
  17         if ((long)&link_bss_end > (MEMISOSTART + MEMISOSIZE)){
started();
shutdown();
  20         }
  22         // initialize .bss senment
  23         while (bss<&link_bss_end)
  24                 *bss++ = 0;
boot();
  27 }
  29 #define NUM_FL      121 // 0 - 120, entries in firmware
  30 #define NUM_DATA    2   // 2 words each entry
  31 extern int focus_len_table[NUM_FL*NUM_DATA];
  33 // Conversion factor lens FL --> 35mm equiv
  34 // lens      35mm     CF
  35 // ----      ----     --
  36 // 5.2       24       ( 24/ 5.2) * 52 = 240  (min FL)
  37 // 26.0      120      (120/26.0) * 52 = 240  (max FL)
  38 #define CF_EFL      240
  39 #define CF_EFL_DIV  52
  41 const int zoom_points = NUM_FL;
  43 int get_effective_focal_length(int zp) {
  44         return (CF_EFL*get_focal_length(zp))/CF_EFL_DIV;
  45 }
  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 }
  53 int get_zoom_x(int zp) {
  54         return get_focal_length(zp)*10/focus_len_table[0];
  55 }
  57 long get_vbatt_min()
  58 {
  59     return 3200;
  60 }
  62 long get_vbatt_max()
  63 {
  64     return 4050;
  65 }