root/platform/a2200/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() {
  12         long *bss = &link_bss_start;
  14         // sanity check
  15         if ((long)&link_bss_end > (MEMISOSTART + MEMISOSIZE)){
started();
shutdown();
  18         }
  20         // initialize .bss senment
  21         while (bss<&link_bss_end)
  22                 *bss++ = 0;
boot();
  25 }
  27 // Focus length table in firmware @FFFE2A98 (1.00B)
  28 #define NUM_FL 8
  29 #define NUM_DATA    3   // 3 words each entry, first is FL
  30 extern int focus_len_table[NUM_FL*NUM_DATA];
  32 // Conversion factor lens FL --> 35mm equiv
  33 // lens      35mm     CF
  34 // ----      ----     --
  35 //  5.0       28      ( 28/ 5.0) * 50 = 280  (min FL)
  36 // 20.0      112      (112/20.0) * 50 = 280  (max FL)
  37 #define CF_EFL      280
  38 #define CF_EFL_DIV  50
  39 const int zoom_points = NUM_FL;
  41 int get_effective_focal_length(int zp) {
  42     return (CF_EFL*get_focal_length(zp))/CF_EFL_DIV;
  43 }
  45 int get_focal_length(int zp) {
  46         if (zp < 0) zp = 0;
  47         else if (zp >= NUM_FL) zp = NUM_FL-1;
  48         return focus_len_table[zp*NUM_DATA];
  49 }
  51 int get_zoom_x(int zp) {
  52         return get_focal_length(zp)*10/focus_len_table[0];
  53 }
  55 long get_vbatt_min() {
  56         return 3000;    // Measured on the battery without load (3350)
  57 }
  59 long get_vbatt_max() {
  61         return 4150;    // Measured on the battery (4170)
  62 }