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📄 saaregload.mht

📁 基于FPGA的嵌入式机器人视觉识别系统模块源代码
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Date: Mon, 10 Mar 2008 08:56:22 +0800
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<H2>A Color Vision System for Embedded Robotics =
Applications</H2></CENTER>Given=20
a 72 paged data sheet, a couple dozen configuration registers controling =
wide=20
ranging filter values and digital interface settings, I've also provided =
the 'C'=20
code I use to initialize the device:=20
<P>
<CENTER><A=20
href=3D"http://www.seattlerobotics.org/encoder/200601/article3/index.php#=
saaregload">
<H2>Click here to return to article</H2></A>
<P>
<TABLE borderColor=3D#0080ff cellPadding=3D10 align=3Dcenter=20
background=3Dhttp://www.seattlerobotics.org/encoder/200601/article3/grid.=
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      <CENTER>
      <H4>Processor Side 'C' code to set up SAA7111A Video Input =
Processors=20
      </H4></CENTER>
      <P><PRE>void set_Up_SAA7111(void)
{
	dprintf("\n\r ... I2C write 1 ...\n\r");
	i2c_Write(1,0x24,0x01,0x00);	// chip number, address, subaddress, value
	i2c_Write(1,0x24,0x02,0xc0);=20
	i2c_Write(1,0x24,0x03,0x33);=20
	i2c_Write(1,0x24,0x04,0x00);=20
	i2c_Write(1,0x24,0x05,0x00);=20
	i2c_Write(1,0x24,0x06,0xeb);=20
	i2c_Write(1,0x24,0x07,0xe0);=20
	i2c_Write(1,0x24,0x08,0x88);=20
	i2c_Write(1,0x24,0x09,0x01);=20
	i2c_Write(1,0x24,0x0a,0x80);=20
	i2c_Write(1,0x24,0x0b,0x47);=20
	i2c_Write(1,0x24,0x0c,0x40);=20
	i2c_Write(1,0x24,0x0d,0x00);=20
	i2c_Write(1,0x24,0x0e,0x01);=20
	i2c_Write(1,0x24,0x10,0x00); =09
	i2c_Write(1,0x24,0x11,0x0c);=09
	i2c_Write(1,0x24,0x12,0x00); =09
	i2c_Write(1,0x24,0x13,0x00);=20
	i2c_Write(1,0x24,0x15,0x00);=20
	i2c_Write(1,0x24,0x16,0x00);=20
	i2c_Write(1,0x24,0x17,0x00);=20

	dprintf("\r ... I2C read chip 1 ...\r");
	cuck =3D i2c_Read(1,0x24,0);=20
	if(0x21 =3D=3D cuck)
	{
		dprintf("--=3D&gt; this is a valid chip number");
	}
	else
	{
		dprintf("--=3D&gt; (%d) this is NOT a valid chip number",cuck);
	}
	dprintf("\r0x00(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x02);=20
	dprintf("\r0x02(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x03);=20
	dprintf("\r0x03(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x04);=20
	dprintf("\r0x04(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x05);=20
	dprintf("\r0x05(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x06);=20
	dprintf("\r0x06(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x07);=20
	dprintf("\r0x07(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x08);=20
	dprintf("\r0x08(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x09);=20
	dprintf("\r0x09(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x0a);=20
	dprintf("\r0x0a(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x0b);=20
	dprintf("\r0x0b(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x0c);=20
	dprintf("\r0x0c(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x0d);=20
	dprintf("\r0x0d(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x0e);=20
	dprintf("\r0x0e(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x10);=20
	dprintf("\r0x10(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x11);=20
	dprintf("\r0x11(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x12);=20
	dprintf("\r0x12(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x13);=20
	dprintf("\r0x13(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x15);=20
	dprintf("\r0x15(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x16);=20
	dprintf("\r0x16(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x17);=20
	dprintf("\r0x17(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x1a);=20
	dprintf("\r0x1a(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x1b);=20
	dprintf("\r0x1b(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x1c);=20
	dprintf("\r0x1c(0x%x)",cuck);
	cuck =3D i2c_Read(1,0x24,0x1f);=20
	dprintf("\r0x1f(0x%x)",cuck);
	if((cuck &amp; 0x40) =3D=3D 0x40)
		dprintf(" video not locked");
	else
	{
		dprintf(" video locked on this channel");
		if((cuck &amp; 0x20) =3D=3D 0x20)
			dprintf(" --&gt; (60Hz)");
		else
			dprintf(" --&gt; (50Hz)");
	}

	if((cuck &amp; 0x01) =3D=3D 0x01)
		dprintf("\r           valid color signal detected");
	else
		dprintf("\r           no valid color data");
	if((cuck &amp; 0x80) =3D=3D 0x80)
		dprintf("\r           VTR (fast) Time Constant");
	else
		dprintf("\r           TV (slow) Time Constant");
	if((cuck &amp; 0x04) =3D=3D 0x04)
		dprintf("\r           White Peak Loop is Activiated");
	return;
}
</PRE></FONT></TR></TBODY></TABLE>
<P>
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