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/* ----------------------------------------------------------------------------
* SAM Software Package License
* ----------------------------------------------------------------------------
* Copyright (c) 2013, 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:
*
* - Redistributions of source code must retain the above copyright notice,
* 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,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ----------------------------------------------------------------------------
*/
/*----------------------------------------------------------------------------
* Headers
*----------------------------------------------------------------------------*/
#include "chip.h"
/*----------------------------------------------------------------------------
* Export functions
*----------------------------------------------------------------------------*/
/**
* \brief Enable ISI
*/
void ISI_Enable(void)
{
REG_ISI_CR |= ISI_CR_ISI_EN;
while( (REG_ISI_SR & ISI_CR_ISI_EN)!=ISI_CR_ISI_EN);
REG_ISI_DMA_CHER |= ISI_DMA_CHER_P_CH_EN | ISI_DMA_CHER_C_CH_EN;
}
/**
* \brief Disable ISI
*/
void ISI_Disable(void)
{
REG_ISI_CR |= ISI_CR_ISI_DIS;
REG_ISI_DMA_CHDR |= ISI_DMA_CHDR_P_CH_DIS;
}
/**
* \brief Enable ISI interrupt
* \param flag of interrupt to enable
*/
void ISI_EnableInterrupt(uint32_t flag)
{
REG_ISI_IER = flag;
}
/**
* \brief Disable ISI interrupt
* \param flag of interrupt to disable
*/
void ISI_DisableInterrupt(uint32_t flag)
{
REG_ISI_IDR = flag;
}
/**
* \brief Return ISI status register
* \return Status of ISI register
*/
uint32_t ISI_StatusRegister(void)
{
return(REG_ISI_SR);
}
/**
* \brief Enable Codec path for capture next frame
*/
void ISI_CodecPathFull(void)
{
// The codec path is enabled and the next frame is captured.
// Both codec and preview datapaths are working simultaneously
REG_ISI_CR |= ISI_CR_ISI_CDC;
REG_ISI_CFG1 |= ISI_CFG1_FULL;
}
/**
* \brief Set frame rate
* \param frate frame rate capture
*/
void ISI_SetFrame(uint32_t frate)
{
if( frate > 7 ) {
TRACE_ERROR("FRate too big\n\r");
frate = 7;
}
REG_ISI_CFG1 |= ISI_CFG1_FRATE(frate);
}
/**
* \brief Get the number of byte per pixels
* \param bmpRgb BMP type can be YUV or RGB
*/
uint8_t ISI_BytesForOnePixel(uint8_t bmpRgb)
{
uint8_t nbByte_Pixel;
if (bmpRgb == RGB) {
if ((REG_ISI_CFG2 & ISI_CFG2_RGB_MODE) == ISI_CFG2_RGB_MODE){
// RGB: 5:6:5 16bits/pixels
nbByte_Pixel = 2;
}
else {
// RGB: 8:8:8 24bits/pixels
nbByte_Pixel = 3;
}
}
else {
// YUV: 2 pixels for 4 bytes
nbByte_Pixel = 2;
}
return nbByte_Pixel;
}
/**
* \brief Reset ISI
*/
void ISI_Reset(void)
{
uint32_t timeout=0;
// Resets the image sensor interface.
// Finish capturing the current frame and then shut down the module.
REG_ISI_CR = ISI_CR_ISI_SRST | ISI_CR_ISI_DIS;
// wait Software reset has completed successfully.
while( (!(REG_ISI_SR & ISI_SR_SRST))
&& (timeout < 0x5000) ){
timeout++;
}
if( timeout == 0x5000 ) {
TRACE_ERROR("ISI-Reset timeout\n\r");
}
}
/**
* \brief ISI initialize
* \param pVideo structure of video driver
*/
void ISI_Init(pIsi_Video pVideo)
{
uint32_t hRatio, vRatio;
ISI_Reset();
// SLD pixel clock periods to wait before the beginning of a line.
// SFD lines are skipped at the beginning of the frame.
REG_ISI_CFG1 |= ISI_CFG1_SLD(pVideo->Hblank) + ISI_CFG1_SFD(pVideo->Vblank);
TRACE_DEBUG("ISI_CFG1=0x%X\n\r", REG_ISI_CFG1);
// IM_VSIZE: Vertical size of the Image sensor [0..2047]
// Vertical size = IM_VSIZE + 1
// IM_HSIZE: Horizontal size of the Image sensor [0..2047]
// Horizontal size = IM_HSIZE + 1
// YCC_SWAP : YCC image data
REG_ISI_CFG2 = ISI_CFG2_IM_VSIZE(pVideo->codec_vsize - 1)
+ ISI_CFG2_IM_HSIZE(pVideo->codec_hsize - 1);
if (pVideo->rgb_or_yuv == RGB) {
REG_ISI_CFG2 |= ISI_CFG2_COL_SPACE | ISI_CFG2_RGB_MODE ;
}
else {
REG_ISI_CFG2|= ISI_CFG2_YCC_SWAP(2) ;
}
TRACE_DEBUG("ISI_CFG2=0x%X\n\r", REG_ISI_CFG2);
// Vertical Preview size = PREV_VSIZE + 1 (480 max only in RGB mode).
// Horizontal Preview size = PREV_HSIZE + 1 (640 max only in RGB mode).
if( (pVideo->lcd_vsize > 480) || (pVideo->lcd_hsize > 640)) {
TRACE_ERROR("Size LCD bad define %u, %u\n\r",(unsigned int)pVideo->lcd_vsize ,(unsigned int)pVideo->lcd_hsize);
REG_ISI_PSIZE = ((480 - 1) ) + (((640-1) << 16) );
}
else {
REG_ISI_PSIZE = ((pVideo->lcd_vsize -1)) + (((pVideo->lcd_hsize -1) << 16) );
}
// DEC_FACTOR is 8-bit width, range is from 16 to 255.
// Values from 0 to 16 do not perform any decimation.
//REG_ISI_PDECF = (16 * pVideo->codec_hsize)/640;
hRatio = (16 * pVideo->codec_hsize)/(pVideo->lcd_hsize);
vRatio = (16 * pVideo->codec_vsize)/(pVideo->lcd_vsize);
REG_ISI_PDECF = (hRatio > vRatio )? vRatio: hRatio;
if (REG_ISI_PDECF < 16) REG_ISI_PDECF = 16;
REG_ISI_DMA_P_DSCR = pVideo->Isi_fbd_base;
REG_ISI_DMA_P_CTRL = ISI_DMA_P_CTRL_P_FETCH;
REG_ISI_DMA_P_ADDR = pVideo->lcd_fb_addr;
REG_ISI_DMA_C_DSCR = pVideo->codec_fbd_base;
REG_ISI_DMA_C_CTRL = ISI_DMA_C_CTRL_C_FETCH;
REG_ISI_DMA_C_ADDR = pVideo->codec_fb_addr;
// C0: Color Space Conversion Matrix Coefficient C0
// C1: Color Space Conversion Matrix Coefficient C1
// C2: Color Space Conversion Matrix Coefficient C2
// C3: Color Space Conversion Matrix Coefficient C3
REG_ISI_Y2R_SET0 = ISI_Y2R_SET0_C0(0x95)
+ ISI_Y2R_SET0_C1(0xFF)
+ ISI_Y2R_SET0_C2(0x68)
+ ISI_Y2R_SET0_C3(0x32);
// C4: Color Space Conversion Matrix coefficient C4
// Yoff: Color Space Conversion Luminance 128 offset
// Croff: Color Space Conversion Red Chrominance 16 offset
// Cboff: Color Space Conversion Blue Chrominance 16 offset
REG_ISI_Y2R_SET1 = ISI_Y2R_SET1_C4(0xCC)
+ ISI_Y2R_SET1_Yoff
+ ISI_Y2R_SET1_Croff
+ ISI_Y2R_SET1_Cboff;
}