IEEE 802.15.4 subsystem
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Source at commit 49e7c83796bc04941e9dbcec69bc0751563ff4d4 created 7 years 6 days ago. By Werner Almesberger, atusb/: use ""VDD" symbol from kicad-libs | |
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1 | /* |
2 | * atrf-rssi/atrf-rssi.c - ben-wpan AT86RF230 spectrum scan |
3 | * |
4 | * Written 2010-2011 by Werner Almesberger |
5 | * Copyright 2010-2011 Werner Almesberger |
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 | |
13 | |
14 | #include <stdlib.h> |
15 | #include <stdio.h> |
16 | #include <unistd.h> |
17 | #include <signal.h> |
18 | #include <sys/time.h> |
19 | |
20 | #include "at86rf230.h" |
21 | #include "atrf.h" |
22 | #include "misctxrx.h" |
23 | |
24 | #include "gui.h" |
25 | |
26 | |
27 | static struct timeval t0; |
28 | static volatile int run = 1; |
29 | |
30 | |
31 | static void sweep(struct atrf_dsc *dsc) |
32 | { |
33 | int chan, rssi; |
34 | struct timeval t; |
35 | |
36 | for (chan = 11; chan <= 26; chan++) { |
37 | atrf_reg_write(dsc, REG_PHY_CC_CCA, chan); |
38 | /* 150 us, according to AVR2001 section 3.5 */ |
39 | wait_for_interrupt(dsc, IRQ_PLL_LOCK, IRQ_PLL_LOCK, 1); |
40 | |
41 | gettimeofday(&t, NULL); |
42 | rssi = atrf_reg_read(dsc, REG_PHY_RSSI) & RSSI_MASK; |
43 | t.tv_sec -= t0.tv_sec; |
44 | t.tv_usec -= t0.tv_usec; |
45 | printf("%d %f %d\n", |
46 | 2405+(chan-11)*5, |
47 | (double) t.tv_sec+t.tv_usec/1000000.0, |
48 | -91+3*(rssi-1)); |
49 | } |
50 | printf("\n"); |
51 | } |
52 | |
53 | |
54 | static void die(int sig) |
55 | { |
56 | run = 0; |
57 | } |
58 | |
59 | |
60 | static void usage(const char *name) |
61 | { |
62 | fprintf(stderr, |
63 | "usage: %s [-d driver[:arg]] [-n] sweeps\n", name); |
64 | |
65 | #ifdef HAVE_GFX |
66 | fprintf(stderr, |
67 | "%6s %s [-d driver[:arg]] -g\n", "", name); |
68 | #endif |
69 | |
70 | exit(1); |
71 | } |
72 | |
73 | |
74 | int main(int argc, char **argv) |
75 | { |
76 | const char *driver = NULL; |
77 | struct atrf_dsc *dsc; |
78 | unsigned long arg = 0, i; |
79 | char *end; |
80 | int c; |
81 | int graphical = 0; |
82 | |
83 | while ((c = getopt(argc, argv, "d:gn")) != EOF) |
84 | switch (c) { |
85 | case 'd': |
86 | driver = optarg; |
87 | break; |
88 | #ifdef HAVE_GFX |
89 | case 'g': |
90 | graphical = 1; |
91 | |
92 | break; |
93 | #endif |
94 | case 'n': |
95 | break; |
96 | default: |
97 | usage(*argv); |
98 | } |
99 | |
100 | switch (argc-optind) { |
101 | case 0: |
102 | if (!graphical) |
103 | usage(*argv); |
104 | break; |
105 | case 1: |
106 | if (graphical) |
107 | usage(*argv); |
108 | arg = strtoul(argv[optind], &end, 0); |
109 | if (*end) |
110 | usage(*argv); |
111 | break; |
112 | default: |
113 | usage(*argv); |
114 | } |
115 | |
116 | signal(SIGINT, die); |
117 | |
118 | dsc = atrf_open(driver); |
119 | if (!dsc) |
120 | return 1; |
121 | |
122 | atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TRX_OFF); |
123 | atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_RX_ON); |
124 | atrf_reg_write(dsc, REG_IRQ_MASK, IRQ_PLL_LOCK); |
125 | /* |
126 | * We'll wait for the PLL lock after selecting the channel. |
127 | */ |
128 | |
129 | if (graphical) |
130 | gui(dsc); |
131 | else { |
132 | gettimeofday(&t0, NULL); |
133 | for (i = 0; run && i != arg; i++) |
134 | sweep(dsc); |
135 | } |
136 | |
137 | atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TRX_OFF); |
138 | |
139 | atrf_close(dsc); |
140 | |
141 | return 0; |
142 | } |
143 |