Subversion Repositories svnkaklik

Rev

Rev 409 | Details | Compare with Previous | Last modification | View Log

Rev Author Line No. Line
341 kaklik 1 
/*****************************************************************************/
2 
/*
3 
 *  BoardController.cpp - communication with NGW100 Board controller
4 
 *
5 
 *      Copyright (C) 2007  Karel Hojdar
6 
 *
7 
 *      This program is free software; you can redistribute it and/or modify
8 
 *      it under the terms of the GNU General Public License as published by
9 
 *      the Free Software Foundation; either version 2 of the License, or
10 
 *      (at your option) any later version.
11 
 *
12 
 *      This program is distributed in the hope that it will be useful,
13 
 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
14 
 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 
 *      GNU General Public License for more details.
16 
 *
17 
 *
18 
 *
19 
 *  Revision history
20 
 *    15.06.2007   1.0   Initial release
21 
 */
22 
/*****************************************************************************/
23 
 
24 
#include <iostream>
25 
 
26 
#include <getopt.h>
27 
#include <errno.h>
28 
#include <string.h>
29 
#include <stdio.h>
30 
#include <stdlib.h>
31 
#include <unistd.h>
32 
#include "linux/i2c-dev.h"
33 
#include <sys/ioctl.h>
34 
#include <sys/types.h>
35 
#include <sys/stat.h>
36 
#include <fcntl.h>
37 
 
38 
using namespace std;
39 
 
40 
static char* version = "BoardController, version 0.1";
41 
 
42 
static char* help = "Usage: BoardController [OPTION]\n  -I\t\tshow ID\n  -M\t\tshow model\n  -R\t\tshow revision\n  -S\t\tshow serial no.\n  -T\t\tshow temperature\n\n";
43 
 
44 
#define I2C_SLAVE	0x0703	/* Change slave address			*/
45 
#define I2C_RDWR	0x0707	/* Combined R/W transfer (one stop only)*/
46 
 
47 
#define BC_Addr	0x0B
48 
 
49 
void DoExit(int ex)
50 
{
51 
	exit(ex);
52 
}
53 
 
54 
unsigned char xfunc[5] = {0x99, 0x9A, 0x9B, 0x9E, 0x8D};
55 
unsigned char xlen[5] = {8, 6, 1, 15, 2};
56 
 
57 
int main(int argc, char *argv[], char *envp[])
58 
{
59 
	char	*progname;
345 kaklik 60 
	int c, func = 0, Len;
341 kaklik 61 
	int	i2cbus = 0;
62 
	char filename[20], Buf[64];
63 
	int file;
64 
 
65 
	progname = strrchr(argv[0], '/');
66 
	progname = progname ? progname + 1 : argv[0];
67 
 
68 
	while ((c = getopt (argc, argv, "IiMmRrSsTth")) != -1)
69 
		switch (c)
70 
		{
71 
		case 'I':
72 
		case 'i':
73 
			func = 0;
74 
			break;
75 
 
76 
		case 'M':
77 
		case 'm':
78 
			func = 1;
79 
			break;
80 
 
81 
		case 'R':
82 
		case 'r':
83 
			func = 2;
84 
			break;
85 
 
86 
		case 'S':
87 
		case 's':
88 
			func = 3;
89 
			break;
90 
 
91 
		case 'T':
92 
		case 't':
93 
			func = 4;
94 
			break;
95 
 
96 
		case 'h':
97 
			printf ("%s\n%s", version, help);
98 
			return 1;
99 
 
100 
		case '?':
101 
			printf ("Unknown option `-%c', try %s -h.\n", optopt,progname);
102 
			return 1;
103 
		}
104 
 
105 
	sprintf(filename, "/dev/i2c-%d", i2cbus);
106 
	file = open(filename, O_RDWR);
107 
 
108 
	if (file < 0)
109 
	{
110 
		cerr << "Could not open /dev/i2c-0." << endl;
111 
		return -1;
112 
	}
113 
 
114 
	if (ioctl(file, I2C_SLAVE, BC_Addr) == -1)
115 
	{
116 
		fprintf(stderr, "Failed to set address to 0x%02x.\n", BC_Addr);
117 
		DoExit(-2);
118 
	}
119 
 
120 
	int Loops = 0;
121 
 
122 
	do
123 
	{
124 
		Buf[0] = xfunc[func];
125 
		if ( write(file, Buf, 1) != 1)
126 
		{
127 
			fprintf(stderr, "Failed to write byte to address to 0x%02x, errno %i.\n", BC_Addr, errno);
128 
			DoExit(-3);
129 
		}
130 
 
131 
		if (read(file, Buf, 1) != 1)
132 
		{
133 
			fprintf(stderr, "Failed to read response length, errno %i.\n", errno);
134 
			DoExit(-4);
135 
		}
136 
 
137 
		Len = Buf[0];
138 
		if (read(file, Buf, Len) != Len)
139 
		{
140 
			fprintf(stderr, "Failed to read response, errno %i.\n", errno);
141 
			DoExit(-5);
142 
		}
143 
 
144 
		Loops++;
145 
	} while (Len != xlen[func]);
146 
 
147 
	if (Loops > 1)
148 
		fprintf(stderr, "After %i attempts got: \n", Loops);
149 
 
150 
	switch (func)
151 
	{
152 
		case 0:
153 
			Buf[Len] = 0x00;
154 
			fprintf(stdout, "Board ID is %s.\n", Buf);
155 
			break;
156 
		case 1:
157 
			Buf[Len] = 0x00;
158 
			fprintf(stdout, "Model of the board is %s.\n", Buf);
159 
			break;
160 
		case 2:
161 
			fprintf(stdout, "Revision of the board is 0x%02X.\n", Buf[0]);
162 
			break;
163 
		case 3:
164 
			Buf[Len] = 0x00;
165 
			fprintf(stdout, "Serial number of the board is %s.\n", Buf);
166 
			break;
167 
		case 4:
168 
			fprintf(stdout, "Temperature is %i or %i.\n", (Buf[0] << 8) + Buf[1], (Buf[1] << 8) + Buf[0]);
169 
			break;
170 
 
171 
	}
172 
 
173 
	close(file);
174 
 
175 
	return 0;
176 
}