root/platform/g7x2/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"
   6 extern long link_bss_start;
   7 extern long link_bss_end;
   8 extern void boot();
  10 void startup() {
  11     long *bss = &link_bss_start;
  12     // sanity check
  13     if ((long)&link_bss_end > (MEMISOSTART + MEMISOSIZE)) {
started();
shutdown();
  16     }
  17     // initialize .bss senment
  18     while (bss<&link_bss_end)
  19         *bss++ = 0;
boot();
  21 }
  23 #define NUM_FL      101
  24 #define NUM_DATA    2   // 2 words each entry, first is FL
  25 extern int focus_len_table[NUM_FL*NUM_DATA];
  27 // Conversion factor lens FL --> 35mm equiv
  28 // lens      35mm     CF
  29 // ----      ----     --
  30 // 8.8       24       (24.0/8.8  ) * 100 = 273  (min FL)
  31 // 36.8      100      (36.8/100.0) * 100 = 273  (max FL)
  32 #define CF_EFL      273
  33 #define CF_EFL_DIV  100
  35 const int zoom_points = NUM_FL;
  37 int get_effective_focal_length(int zp) {
  38     return (CF_EFL*get_focal_length(zp))/CF_EFL_DIV;
  39 }
  41 int get_focal_length(int zp) {
  42     if (zp < 0) zp = 0;
  43     else if (zp >= NUM_FL) zp = NUM_FL-1;
  44     return focus_len_table[zp*NUM_DATA];
  45 }
  47 int get_zoom_x(int zp) {
  48     return get_focal_length(zp)*10/focus_len_table[0];
  49 }
  51 long get_vbatt_min()
  52 {
  53     return 2980;
  54 }
  56 long get_vbatt_max()
  57 {
  58     return 4000;
  59 }