camera/po3030k/calc.c File Reference

Calculate the timing for the camera. More...

#include "po3030k.h"
#include "../../i2c/i2c.h"
#include <p33fxxxx.h>

Defines
#define	ARRAY_ORIGINE_X   210
#define	ARRAY_ORIGINE_Y   7
#define	IRQ_PIX_LAT   4
Functions
void	po3030k_config_cam (unsigned int sensor_x1, unsigned int sensor_y1, unsigned int sensor_width, unsigned int sensor_height, unsigned int zoom_fact_width, unsigned int zoom_fact_height, int color_mode)
int	po3030k_get_bytes_per_pixel (int color_mode)
Variables
int	_po3030k_slow_path

---

Detailed Description

Calculate the timing for the camera.

Author:

Philippe Rétornaz

---

Function Documentation

void po3030k_config_cam	(	unsigned int	sensor_x1,
		unsigned int	sensor_y1,
		unsigned int	sensor_width,
		unsigned int	sensor_height,
		unsigned int	zoom_fact_width,
		unsigned int	zoom_fact_height,
		int	color_mode
	)

This function setup the internal timing of the camera to match the zoom, color mode and interest area.

Warning:

If the common deniminator of both zoom factor is 4 or 2, part of the subsampling is done by the camera ( QQVGA = 4, QVGA = 2 ). This increase the framerate by respectivly 4 or 2. Moreover greyscale is twice faster than color mode.

Parameters:

	sensor_x1	The X coordinate of the window's corner
	sensor_y1	The Y coordinate of the window's corner
	sensor_width	the Width of the interest area, in FULL sampling scale
	sensor_height	The Height of the insterest area, in FULL sampling scale
	zoom_fact_width	The subsampling to apply for the window's Width
	zoom_fact_height	The subsampling to apply for the window's Height
	color_mode	The color mode in which the camera should be configured

See also:

po3030k_write_cam_registers

int po3030k_get_bytes_per_pixel

(

int

color_mode

)

Return the number of bytes per pixel in the given color mode

Parameters:

color_mode

The given color mode

Returns:

The number of bytes per pixel in the given color mode

---

Variable Documentation

int _po3030k_slow_path

Internal flag to tell that the pixel clock is half speed

---