source: branches/release-1_0/platform/sx40hs/main.c @ 1770

#include "lolevel.h"
#include "platform.h"
#include "core.h"
#include "keyboard.h"


extern long link_bss_start;
extern long link_bss_end;
extern void boot();


void startup()
{
        long *bss = &link_bss_start;
        long *ptr;

        // sanity check
        if ((long)&link_bss_end > (MEMISOSTART + MEMISOSIZE)){
                started();
                shutdown();
        }

        // initialize .bss senment
        while (bss<&link_bss_end)
                *bss++ = 0;

        boot();
}

int screen_opened(void) {
        return (physw_status[2] & 0x00000400);
}

int screen_rotated(void) {
        return !(physw_status[2] & 0x00000100);
}

// Focus length table in firmware @ 0xfff4a7b4
#define NUM_FL      201 // 0 - 200, entries in firmware
#define NUM_DATA    1   // 1 int value each entry
extern int focus_len_table[NUM_FL*NUM_DATA];

// Conversion factor lens FL --> 35mm equiv
// lens      35mm     CF
// ----      ----     --
// 4.3       24       ( 24/  4.3) * 43 = 240  (min FL)
// 150.5     840      (840/150.5) * 43 = 240  (max FL)
#define CF_EFL      240
#define CF_EFL_DIV  43

const int zoom_points = NUM_FL;

int get_effective_focal_length(int zp) {
    return (CF_EFL*get_focal_length(zp))/CF_EFL_DIV;
}

int get_focal_length(int zp) {
    if (zp < 0) zp = 0;
    else if (zp >= NUM_FL) zp = NUM_FL-1;
    return focus_len_table[zp*NUM_DATA];
}

int get_zoom_x(int zp) {
    return get_focal_length(zp)*10/focus_len_table[0];
}

long get_vbatt_min()
{
        return 6450;
}

long get_vbatt_max()
{
        return 8300;
}