d6f01a3497
git-svn-id: https://bucket.mit.edu/svn/nilm/acquisition/ethstream@10306 ddd99763-3ecb-0310-9145-efcb8ce7c51f
67 lines
2.2 KiB
C
67 lines
2.2 KiB
C
/*
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* Labjack Tools
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* Copyright (c) 2003-2007 Jim Paris <jim@jtan.com>
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*
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* This is free software; you can redistribute it and/or modify it and
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* it is provided under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation; see COPYING.
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*/
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#ifndef NERDJACK_H
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#define NERDJACK_H
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#include <stdint.h>
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#include <stdlib.h>
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#include "netutil.h"
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#define NERDJACK_CHANNELS 12
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#define NERDJACK_CLOCK_RATE 66000000
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#define NERDJACK_DATA_PORT 49155
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#define NERDJACK_UDP_RECEIVE_PORT 49156
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#define NERDJACK_COMMAND_PORT 49157
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#define NERDJACK_PACKET_SIZE 1460
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#define NERDJACK_NUM_SAMPLES 726
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/* Packet structure used in message to start sampling on NerdJack */
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typedef struct __attribute__ ((__packed__)) {
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char word[4];
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unsigned int period; //CHANGED FROM TYPE LONG. With 64 bit compilers longs are 8 bytes and nerdjack expects a 4 byte value
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//since the int type is 4 bytes this works but should be changed to use defined datatypes rather than rely on compiler data types
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unsigned short channelbit;
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unsigned char precision;
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unsigned char prescaler;
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} getPacket;
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/* Open/close TCP/IP connection to the NerdJack */
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int nerd_open(const char *address, int port);
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int nerd_close_conn(int data_fd);
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/* Generate the command word for the NerdJack */
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int nerd_generate_command(getPacket * command, int *channel_list,
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int channel_count, int precision,
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unsigned long period);
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/* Send given command to NerdJack */
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int nerd_send_command(const char *address, void *command, int length);
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/* Get the version string from NerdJack */
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int nerd_get_version(const char *address);
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/* Stream data out of the NerdJack */
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int nerd_data_stream(int data_fd, int numChannels, int *channel_list,
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int precision, int convert, int lines, int showmem,
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unsigned short *currentcount, unsigned int period,
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int wasreset);
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/* Detect the IP Address of the NerdJack and return in ipAddress */
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int nerdjack_detect(char *ipAddress);
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/* Choose the best ScanConfig and ScanInterval parameters for the
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desired scanrate. Returns -1 if no valid config found */
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int nerdjack_choose_scan(double desired_rate, double *actual_rate,
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unsigned long *period);
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#endif
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