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			SignalToNoise1.c
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/*====================================================================*
 *
 *   Copyright (c) 2013 Qualcomm Atheros, Inc.
 *
 *   All rights reserved.
 *
 *   Redistribution and use in source and binary forms, with or 
 *   without modification, are permitted (subject to the limitations 
 *   in the disclaimer below) provided that the following conditions 
 *   are met:
 *
 *   * Redistributions of source code must retain the above copyright 
 *     notice, this list of conditions and the following disclaimer.
 *
 *   * Redistributions in binary form must reproduce the above 
 *     copyright notice, this list of conditions and the following 
 *     disclaimer in the documentation and/or other materials 
 *     provided with the distribution.
 *
 *   * Neither the name of Qualcomm Atheros nor the names of 
 *     its contributors may be used to endorse or promote products 
 *     derived from this software without specific prior written 
 *     permission.
 *
 *   NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE 
 *   GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE 
 *   COPYRIGHT HOLDERS AND CONTRIBUTORS &quot;AS IS&quot; AND ANY EXPRESS OR 
 *   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
 *   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 *   PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 
 *   OR CONTRIBUTORS 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.  
 *
 *--------------------------------------------------------------------*/

/*====================================================================*
 *
 *   signed SignalToNoise1 (struct plc * plc);
 *
 *   plc.h
 *
 *
 *   Contributor(s):
 *      Charles Maier &lt;cmaier@qca.qualcomm.com&gt;
 *
 *--------------------------------------------------------------------*/

#ifndef SIGNALTONOISE1_SOURCE
#define SIGNALTONOISE1_SOURCE

#include &lt;stdio.h&gt;
#include &lt;stdint.h&gt;

#include &quot;../tools/flags.h&quot;
#include &quot;../tools/error.h&quot;
#include &quot;../tools/endian.h&quot;
#include &quot;../plc/plc.h&quot;

#ifndef TONEMAPS1_SOURCE

static uint8_t const mod2bits [AMP_BITS] =

{
	0,
	1,
	2,
	3,
	4,
	6,
	8,
	10,
	12
};

static uint8_t const mod2db [AMP_BITS] =

{
	0,
	2,
	4,
	7,
	10,
	16,
	22,
	28,
	36
};

#endif

signed SignalToNoise1 (struct plc * plc)

{
	struct channel * channel = (struct channel *)(plc-&gt;channel);
	struct message * message = (struct message *)(plc-&gt;message);
	byte tonemap [PLC_SLOTS + 1][AMP_CARRIERS &gt;&gt; 1];
	byte GIL [PLC_SLOTS];
	byte AGC [PLC_SLOTS];
	double SNR [PLC_SLOTS] =
	{
		0.0
	};
	double BPC [PLC_SLOTS] =
	{
		0.0
	};
	double AvgSNR = 0;
	double AvgBPC = 0;
	unsigned carriers = 0;
	unsigned carrier = 0;
	unsigned slots = 0;
	unsigned slot = 0;

#ifndef __GNUC__
#pragma pack (push,1)
#endif

	struct __packed vs_tone_slot_char_request
	{
		struct ethernet_hdr ethernet;
		struct qualcomm_hdr qualcomm;
		uint8_t MACADDRESS [ETHER_ADDR_LEN];
		uint8_t TMSLOT;
	}
	* request = (struct vs_tone_slot_char_request *) (message);
	struct __packed vs_tone_slot_char_confirm
	{
		struct ethernet_hdr ethernet;
		struct qualcomm_hdr qualcomm;
		uint8_t MSTATUS;
		uint8_t TMSLOT;
		uint8_t NUMTMS;
		uint16_t TMNUMACTCARRIERS;
		uint8_t MOD_CARRIER [(INT_CARRIERS + 1) &gt;&gt; 1];
		uint8_t GIL;
		uint8_t AGC;
	}
	* confirm = (struct vs_tone_slot_char_confirm *) (message);

#ifndef __GNUC__
#pragma pack (pop)
#endif

	memset (message, 0, sizeof (* message));
	EthernetHeader (&amp;request-&gt;ethernet, channel-&gt;peer, channel-&gt;host, channel-&gt;type);
	QualcommHeader (&amp;request-&gt;qualcomm, 0, (VS_RX_TONE_MAP_CHAR | MMTYPE_REQ));
	plc-&gt;packetsize = (ETHER_MIN_LEN - ETHER_CRC_LEN);
	memcpy (request-&gt;MACADDRESS, plc-&gt;RDA, sizeof (request-&gt;MACADDRESS));
	request-&gt;TMSLOT = 0;
	if (SendMME (plc) &lt;= 0)
	{
		error (PLC_EXIT (plc), errno, CHANNEL_CANTSEND);
		return (-1);
	}
	if (ReadMME (plc, 0, (VS_RX_TONE_MAP_CHAR | MMTYPE_CNF)) &lt;= 0)
	{
		error (PLC_EXIT (plc), errno, CHANNEL_CANTREAD);
		return (-1);
	}
	carriers = LE16TOH (confirm-&gt;TMNUMACTCARRIERS);
	slots = confirm-&gt;NUMTMS;
	if (!slots)
	{
		error (PLC_EXIT (plc), ECANCELED, &quot;No Tone Maps Available&quot;);
		return (-1);
	}
	memset (tonemap, 0, sizeof (tonemap));
	for (slot = 0; slot &lt; slots; slot++)
	{
		EthernetHeader (&amp;request-&gt;ethernet, channel-&gt;peer, channel-&gt;host, channel-&gt;type);
		QualcommHeader (&amp;request-&gt;qualcomm, 0, (VS_RX_TONE_MAP_CHAR | MMTYPE_REQ));
		memcpy (request-&gt;MACADDRESS, plc-&gt;RDA, sizeof (request-&gt;MACADDRESS));
		request-&gt;TMSLOT = slot;
		plc-&gt;packetsize = (ETHER_MIN_LEN - ETHER_CRC_LEN);
		if (SendMME (plc) &lt;= 0)
		{
			error (PLC_EXIT (plc), errno, CHANNEL_CANTSEND);
			return (-1);
		}
		if (ReadMME (plc, 0, (VS_RX_TONE_MAP_CHAR | MMTYPE_CNF)) &lt;= 0)
		{
			error (PLC_EXIT (plc), errno, CHANNEL_CANTREAD);
			return (-1);
		}
		if (confirm-&gt;MSTATUS)
		{
			Failure (plc, PLC_WONTDOIT);
			return (-1);
		}
		memcpy (&amp;tonemap [slot][0], confirm-&gt;MOD_CARRIER, sizeof (confirm-&gt;MOD_CARRIER));
		GIL [slot] = confirm-&gt;GIL;
		AGC [slot] = confirm-&gt;AGC;
	}
	while (carrier &lt; carriers)
	{
		unsigned value = 0;
		unsigned index = carrier &gt;&gt; 1;
		for (slot = 0; slot &lt; PLC_SLOTS; slot++)
		{
			value = tonemap [slot][index];
			if ((carrier &amp; 1))
			{
				value &gt;&gt;= 4;
			}
			value &amp;= 0x0F;
			BPC [slot] += mod2bits [value];
			SNR [slot] += mod2db [value];
			AvgBPC += mod2bits [value];
			AvgSNR += mod2db [value];
		}
		carrier++;
	}
	AvgBPC /= carriers;
	AvgBPC /= slots;
	AvgSNR /= carriers;
	AvgSNR /= slots;
	printf (&quot; SNR&quot;);
	for (slot = 0; slot &lt; slots; slot++)
	{
		printf (&quot; %8.3f&quot;, SNR [slot] / carriers);
	}
	printf (&quot; %8.3f&quot;, AvgSNR);
	printf (&quot; \n&quot;);
	printf (&quot; ATN&quot;);
	for (slot = 0; slot &lt; slots; slot++)
	{
		printf (&quot; %8.3f&quot;, SNR [slot] / carriers - 60);
	}
	printf (&quot; %8.3f&quot;, AvgSNR - 60);
	printf (&quot; \n&quot;);
	printf (&quot; BPC&quot;);
	for (slot = 0; slot &lt; slots; slot++)
	{
		printf (&quot; %8.3f&quot;, BPC [slot] / carriers);
	}
	printf (&quot; %8.3f&quot;, AvgBPC);
	printf (&quot; \n&quot;);
	printf (&quot; AGC&quot;);
	for (slot = 0; slot &lt; slots; slot++)
	{
		printf (&quot; %02d&quot;, AGC [slot]);
	}
	printf (&quot; \n&quot;);
	printf (&quot; GIL&quot;);
	for (slot = 0; slot &lt; slots; slot++)
	{
		printf (&quot; %02d&quot;, GIL [slot]);
	}
	printf (&quot; \n&quot;);
	return (0);
}

#endif


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