root/platform/a590/main.c

DEFINITIONS

1. startup
2. get_effective_focal_length
3. get_focal_length
4. get_zoom_x
5. rec_switch_state
6. get_vbatt_min
7. get_vbatt_max

   1 #include "camera.h"
   2 #include "lolevel.h"
   3 #include "platform.h"
   4 #include "core.h"
   5 #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();
  28 }
  30 // Focus length table in firmware @0xfffe29ac
  31 #define NUM_FL      8   // 0 - 7, entries in firmware
  32 #define NUM_DATA    3   // 3 words each entry, first is FL
  33 extern int focus_len_table[NUM_FL*NUM_DATA];
  35 // Conversion factor lens FL --> 35mm equiv
  36 // lens      35mm     CF
  37 // ----      ----     --
  38 // 5.8       35       ( 35/ 5.8) * 58 = 350  (min FL)
  39 // 23.2      140      (140/23.2) * 58 = 350  (max FL)
  40 #define CF_EFL      350
  41 #define CF_EFL_DIV  58
  43 const int zoom_points = NUM_FL;
  45 int get_effective_focal_length(int zp) {
  46     return (CF_EFL*get_focal_length(zp))/CF_EFL_DIV;
  47 }
  49 int get_focal_length(int zp) {
  50     if (zp < 0) zp = 0;
  51     else if (zp >= NUM_FL) zp = NUM_FL-1;
  52     return focus_len_table[zp*NUM_DATA];
  53 }
  55 int get_zoom_x(int zp) {
  56     return get_focal_length(zp)*10/focus_len_table[0];
  57 }
  59 #if 0
  60 int rec_switch_state(void) {
  61 //      mode  = (physw_status[1] & 0x02000000)?MODE_REC:MODE_PLAY;
  62         return (physw_status[1] & 0x02000000);
  63 }
  64 #endif
  66 long get_vbatt_min()
  67 {
  68     return 2300;
  69 }
  71 long get_vbatt_max()
  72 {
  73     return 2550;
  74 }