ov9655.c

isi interface for at91sam9263ek,其中编辑器为keil for mdk arm

/* ----------------------------------------------------------------------------
 *         ATMEL Microcontroller Software Support 
 * ----------------------------------------------------------------------------
 * Copyright (c) 2008, Atmel Corporation
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
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 * this list of conditions and the disclaimer below.
 *
 * Atmel's name may not be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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 */
 
//-----------------------------------------------------------------------------
//         Headers
//-----------------------------------------------------------------------------
#include <drivers/twi/twid.h>
#include <utility/trace.h>

#include <omnivision/omnivision.h>
#include "ov9655.h"

#include "9655_yuv_cif.h"
#include "9655_yuv_qcif.h"
#include "9655_yuv_qqcif.h"
#include "9655_yuv_qvga.h"
#include "9655_yuv_qqvga.h"
#include "9655_yuv_sxga.h"
#include "9655_yuv_vga.h"

//------------------------------------------------------------------------------
/// Array of image sizes supported by OV965x
//------------------------------------------------------------------------------
const static struct capture_size ov965x_sizes[] = {
//  {width, height}
    /// QQCIF
    {  88,  72 },
    /// QQVGA
    { 160, 120 },
    /// QCIF
    { 176, 144 },
    /// QVGA
    { 320, 240 },
    /// CIF
    { 352, 288 },
    /// VGA
    { 640, 480 },
    /// SXGA
    {1280, 1024 }
};

//------------------------------------------------------------------------------
//         Global Functions
//------------------------------------------------------------------------------

//-----------------------------------------------------------------------------
/// Configure the OV9650 for a specified image size, pixel format, 
/// and frame period.
//-----------------------------------------------------------------------------
void ov965x_configure(Twid *pTwid, unsigned int width, unsigned int heigth)
{
    const struct ov965x_reg *reg_conf;
    unsigned char goodCaptureSize = 0;
    unsigned char i;

    TRACE_DEBUG("ov965x_configure\n\r");
    for( i=0; i<sizeof(ov965x_sizes); i++ ) {
        if( ov965x_sizes[i].width == width ) {
            if( ov965x_sizes[i].height != heigth ) {
                TRACE_ERROR("ov965x_configure vsize not define\n\r");
            }
            else {
                goodCaptureSize = 1;
                break;
            }
        }
    }

    if( goodCaptureSize == 0 ) {
        TRACE_ERROR("Problem size\n\r");
        while(1);
        return;
    }

    // Default value
    reg_conf = ov9655_yuv_vga;

    // common register initialization
    switch(width) {
        case 1280: //SXGA
            TRACE_DEBUG("SXGA\n\r");
            reg_conf = ov9655_yuv_sxga;
        break;
        case 640: //VGA
            TRACE_DEBUG("VGA\n\r");
            reg_conf = ov9655_yuv_vga;
        break;
        case 352: //CIF
            TRACE_DEBUG("CIF\n\r");
            reg_conf = ov9655_yuv_cif;
        break;
        case 320: //QVGA
            TRACE_DEBUG("QVGA\n\r");
            reg_conf = ov9655_yuv_qvga;
        break;

        case 176: //QCIF
            TRACE_DEBUG("QCIF\n\r");
            reg_conf = ov9655_yuv_qcif;
        break;
        case 160: //QQVGA
            TRACE_DEBUG("QQVGA\n\r");
            reg_conf = ov9655_yuv_qqvga;
        break;
        case 88: //QQCIF
            TRACE_DEBUG("QQCIF\n\r");
            reg_conf = ov9655_yuv_qqcif;
        break;
        default:  
            TRACE_DEBUG("ov965x_configure problem\n\r");
        break;
    }
    ov965x_write_regs(pTwid, reg_conf);
}