IEEE 802.15.4 subsystem
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IEEE 802.15.4 subsystem Commit Details
Date: | 2011-04-04 03:29:59 (12 years 11 months ago) |
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Author: | Werner Almesberger |
Commit: | 28e7f255851fb5de8bf143f0f01d0e3c93006dda |
Message: | tools/atrf-xtal: new utility to measure the crystal frequency - Makefile (DIRS): added atrf-xtal - atrf-xtal/Makefile: build atrf-xtal for the Ben or do nothing elsewhere - atrf-xtal/atrf-xtal.h, atrf-xtal/atrf-xtal.c: diagnostic utility to determine the transceiver's crystal frequency - atrf-xtal/atben.c: dirty low-level driver for ATBEN |
Files: |
tools/Makefile (1 diff) tools/atrf-xtal/Makefile (1 diff) tools/atrf-xtal/atben.c (1 diff) tools/atrf-xtal/atrf-xtal.c (1 diff) tools/atrf-xtal/atrf-xtal.h (1 diff) |
Change Details
tools/Makefile | ||
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11 | 11 | # |
12 | 12 | |
13 | 13 | |
14 | DIRS=atrf-id atrf-reset atrf-rssi atrf-trim atrf-txrx | |
14 | DIRS=atrf-id atrf-reset atrf-rssi atrf-trim atrf-txrx \ | |
15 | atrf-xtal | |
15 | 16 | TARGET_ONLY_DIRS=lib |
16 | 17 | |
17 | 18 | ifeq ($(TARGET),ben_jlime) |
tools/atrf-xtal/Makefile | ||
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1 | # | |
2 | # atrf-xtal/Makefile - Build the crystal diagnostic utility | |
3 | # | |
4 | # Written 2010, 2011 by Werner Almesberger | |
5 | # Copyright 2010, 2011 Werner Almesberger | |
6 | # | |
7 | # This program is free software; you can redistribute it and/or modify | |
8 | # it under the terms of the GNU General Public License as published by | |
9 | # the Free Software Foundation; either version 2 of the License, or | |
10 | # (at your option) any later version. | |
11 | # | |
12 | ||
13 | ||
14 | ifeq ($(TARGET),) | |
15 | TARGET = host | |
16 | endif | |
17 | ||
18 | ifeq ($(TARGET),host) | |
19 | ||
20 | .PHONY: all install uninstall clean spotless | |
21 | ||
22 | all: | |
23 | ||
24 | install: | |
25 | ||
26 | uninstall: | |
27 | ||
28 | clean: | |
29 | ||
30 | spotless: | |
31 | ||
32 | else | |
33 | ||
34 | MAIN = atrf-xtal | |
35 | ||
36 | include ../Makefile.common | |
37 | ||
38 | CFLAGS += -O9 | |
39 | ||
40 | OBJS_$(TARGET) = atben.o | |
41 | ||
42 | $(MAIN): $(OBJS_$(TARGET)) | |
43 | ||
44 | endif |
tools/atrf-xtal/atben.c | ||
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1 | /* | |
2 | * atrf-xtal/atben.c - ATBEN-specific low-level driver | |
3 | * | |
4 | * Written 2011 by Werner Almesberger | |
5 | * Copyright 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 | * WARNING: this program does very nasty things to the Ben and it doesn't | |
15 | * like company. In particular, it resents: | |
16 | * | |
17 | * - the MMC driver - disable it with | |
18 | * echo jz4740-mmc.0 >/sys/bus/platform/drivers/jz4740-mmc/unbind | |
19 | * - the AT86RF230/1 kernel driver - use a kernel that doesn't have it | |
20 | * - anything that accesses the screen - kill GUI, X server, etc. | |
21 | * - the screen blanker - either disable it or make sure the screen stays | |
22 | * dark, e.g., with | |
23 | * echo 1 >/sys/devices/platform/jz4740-fb/graphics/fb0/blank | |
24 | * - probably a fair number of other daemons and things as well - best to | |
25 | * kill them all. | |
26 | */ | |
27 | ||
28 | ||
29 | #include <stdlib.h> | |
30 | #include <unistd.h> | |
31 | #include <sys/mman.h> | |
32 | ||
33 | #include "at86rf230.h" | |
34 | #include "atrf.h" | |
35 | ||
36 | #include "atrf-xtal.h" | |
37 | ||
38 | ||
39 | #define MAX_COUNT (1000*1000) | |
40 | ||
41 | ||
42 | static volatile void *base; | |
43 | static volatile uint32_t *clkgr; | |
44 | static uint32_t old_clkgr; | |
45 | ||
46 | ||
47 | void atben_setup(struct atrf_dsc *dsc, int size, int trim) | |
48 | { | |
49 | static uint8_t buf[127]; | |
50 | ||
51 | atrf_reset_rf(dsc); | |
52 | atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TRX_OFF); | |
53 | ||
54 | atrf_reg_write(dsc, REG_XOSC_CTRL, | |
55 | (XTAL_MODE_INT << XTAL_MODE_SHIFT) | trim); | |
56 | ||
57 | /* minimum TX power, maximize delays, disable CRC */ | |
58 | switch (atrf_identify(dsc)) { | |
59 | case artf_at86rf230: | |
60 | atrf_reg_write(dsc, REG_PHY_TX_PWR, 0xf); | |
61 | break; | |
62 | case artf_at86rf231: | |
63 | atrf_reg_write(dsc, REG_PHY_TX_PWR, 0xff); | |
64 | atrf_reg_write(dsc, REG_TRX_CTRL_1, 0); | |
65 | break; | |
66 | default: | |
67 | abort(); | |
68 | } | |
69 | ||
70 | atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_PLL_ON); | |
71 | usleep(200); /* nominally 180 us worst-case */ | |
72 | ||
73 | atrf_buf_write(dsc, buf, size); | |
74 | ||
75 | //atrf_reg_write(dsc, REG_IRQ_MASK, IRQ_TRX_END); | |
76 | atrf_reg_write(dsc, REG_IRQ_MASK, 0xff); | |
77 | ||
78 | mlockall(MCL_CURRENT); | |
79 | ||
80 | struct atrf_dsc { | |
81 | void *driver; | |
82 | void *handle; | |
83 | int chip_id; | |
84 | }; | |
85 | struct atben_dsc { | |
86 | int fd; | |
87 | void *mem; | |
88 | }; | |
89 | ||
90 | base = ((struct atben_dsc *) ((struct atrf_dsc *) dsc)->handle)->mem; | |
91 | clkgr = base+0x20; | |
92 | ||
93 | old_clkgr = *clkgr; | |
94 | *clkgr = old_clkgr | 1 << 10; | |
95 | } | |
96 | ||
97 | ||
98 | unsigned atben_sample(struct atrf_dsc *dsc) | |
99 | { | |
100 | unsigned i = MAX_COUNT; | |
101 | ||
102 | (void) atrf_reg_read(dsc, REG_IRQ_STATUS); | |
103 | #if 0 | |
104 | while (i) { | |
105 | if (atrf_interrupt(dsc)) | |
106 | break; | |
107 | i--; | |
108 | } | |
109 | #else | |
110 | volatile uint32_t *pdpin = base+0x10300; | |
111 | volatile uint32_t *pddats = base+0x10314; | |
112 | volatile uint32_t *pddatc = base+0x10318; | |
113 | volatile uint32_t *icmr = base+0x1004; | |
114 | volatile uint32_t *icmsr = base+0x1008; | |
115 | volatile uint32_t *icmcr = base+0x100c; | |
116 | #if 0 | |
117 | atrf_slp_tr(dsc, 1); | |
118 | while (i) { | |
119 | if (*pdpin & 0x1000) | |
120 | break; | |
121 | i--; | |
122 | } | |
123 | atrf_slp_tr(dsc, 0); | |
124 | #endif | |
125 | uint32_t old_icmr = *icmr; | |
126 | *icmsr = 0xffffffff; | |
127 | ||
128 | *pddats = 1 << 9; | |
129 | *pddatc = 1 << 9; | |
130 | do i--; | |
131 | while (!(*pdpin & 0x1000)); | |
132 | ||
133 | *icmcr = ~old_icmr; | |
134 | #endif | |
135 | return MAX_COUNT-i; | |
136 | } | |
137 | ||
138 | ||
139 | void atben_cleanup(struct atrf_dsc *dsc) | |
140 | { | |
141 | *clkgr = old_clkgr; | |
142 | } |
tools/atrf-xtal/atrf-xtal.c | ||
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1 | /* | |
2 | * atrf-xtal/atrf-xtal.c - AT86RF230/1 crystal diagnostic utility | |
3 | * | |
4 | * Written 2011 by Werner Almesberger | |
5 | * Copyright 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 | ||
18 | #include "atrf.h" | |
19 | ||
20 | #include "atrf-xtal.h" | |
21 | ||
22 | ||
23 | #define DEFAULT_SIZE 127 | |
24 | #define DEFAULT_TRIM 8 | |
25 | ||
26 | ||
27 | static void setup(struct atrf_dsc *dsc, int size, int trim) | |
28 | { | |
29 | #ifdef __mips__ | |
30 | atben_setup(dsc, size, trim); | |
31 | #else | |
32 | #error Only ATBEN is supported for now | |
33 | #endif | |
34 | } | |
35 | ||
36 | ||
37 | unsigned sample(struct atrf_dsc *dsc) | |
38 | { | |
39 | #ifdef __mips__ | |
40 | return atben_sample(dsc); | |
41 | #else | |
42 | #error Only ATBEN is supported for now | |
43 | #endif | |
44 | } | |
45 | ||
46 | ||
47 | void cleanup(struct atrf_dsc *dsc) | |
48 | { | |
49 | #ifdef __mips__ | |
50 | atben_cleanup(dsc); | |
51 | #else | |
52 | #error Only ATBEN is supported for now | |
53 | #endif | |
54 | } | |
55 | ||
56 | ||
57 | static int cmp(const void *a, const void *b) | |
58 | { | |
59 | return *(unsigned *) a-*(unsigned *) b; | |
60 | } | |
61 | ||
62 | ||
63 | ||
64 | static void eval(unsigned *res, int rep) | |
65 | { | |
66 | double sum = 0; | |
67 | int n = 0; | |
68 | int i; | |
69 | ||
70 | qsort(res, rep, sizeof(*res), cmp); | |
71 | if (rep < 8) { | |
72 | printf("%u\n", res[rep >> 1]); | |
73 | return; | |
74 | } | |
75 | for (i = rep/8; i != rep-rep/8; i++) { | |
76 | sum += res[i]; | |
77 | n++; | |
78 | } | |
79 | printf("%f\n", (double) sum/n); | |
80 | } | |
81 | ||
82 | ||
83 | static void usage(const char *name) | |
84 | { | |
85 | fprintf(stderr, | |
86 | "%s [-d] [-s size] [-t trim] [repetitions]\n" | |
87 | " -d instead of printing a mean value, dump all samples\n" | |
88 | " -s size payload size in bytes, 0-127 (default: %d bytes)\n" | |
89 | " -t trim trim capacitor setting, 0-15 (default: %d)\n" | |
90 | " repetitions number of measurements (default: 1)\n" | |
91 | , name, DEFAULT_SIZE, DEFAULT_TRIM); | |
92 | exit(1); | |
93 | } | |
94 | ||
95 | ||
96 | int main(int argc, char *const *argv) | |
97 | { | |
98 | struct atrf_dsc *dsc; | |
99 | int size = DEFAULT_SIZE; | |
100 | int trim = DEFAULT_TRIM; | |
101 | int rep = 1; | |
102 | int dump = 0; | |
103 | char *end; | |
104 | unsigned *res; | |
105 | int c, i; | |
106 | ||
107 | while ((c = getopt(argc, argv, "ds:t:")) != EOF) | |
108 | switch (c) { | |
109 | case 'd': | |
110 | dump = 1; | |
111 | break; | |
112 | case 's': | |
113 | size = strtoul(optarg, &end, 0); | |
114 | if (*end) | |
115 | usage(*argv); | |
116 | if (size > 127) | |
117 | usage(*argv); | |
118 | break; | |
119 | case 't': | |
120 | trim = strtoul(optarg, &end, 0); | |
121 | if (*end) | |
122 | usage(*argv); | |
123 | if (trim > 15) | |
124 | usage(*argv); | |
125 | break; | |
126 | default: | |
127 | usage(*argv); | |
128 | } | |
129 | ||
130 | switch (argc-optind) { | |
131 | case 0: | |
132 | break; | |
133 | case 1: | |
134 | rep = strtoul(argv[optind], &end, 0); | |
135 | if (*end) | |
136 | usage(*argv); | |
137 | break; | |
138 | default: | |
139 | usage(*argv); | |
140 | } | |
141 | ||
142 | res = malloc(rep*sizeof(*res)); | |
143 | if (!res) { | |
144 | perror("malloc"); | |
145 | exit(1); | |
146 | } | |
147 | ||
148 | dsc = atrf_open(); | |
149 | if (!dsc) | |
150 | return 1; | |
151 | ||
152 | setup(dsc, size, trim); | |
153 | ||
154 | for (i = 0; i != rep; i++) | |
155 | res[i] = sample(dsc); | |
156 | ||
157 | cleanup(dsc); | |
158 | ||
159 | atrf_close(dsc); | |
160 | ||
161 | if (dump) { | |
162 | for (i = 0; i != rep; i++) | |
163 | printf("%u\n", res[i]); | |
164 | exit(0); | |
165 | } | |
166 | ||
167 | eval(res, rep); | |
168 | ||
169 | return 0; | |
170 | } |
tools/atrf-xtal/atrf-xtal.h | ||
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1 | /* | |
2 | * atrf-xtal/atrf-xtal.h - AT86RF230/1 crystal diagnostic utility | |
3 | * | |
4 | * Written 2011 by Werner Almesberger | |
5 | * Copyright 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 | #ifndef ATRF_XTAL_H | |
15 | #define ATRF_XTAL_H | |
16 | ||
17 | #include "atrf.h" | |
18 | ||
19 | ||
20 | void atben_setup(struct atrf_dsc *dsc, int size, int trim); | |
21 | unsigned atben_sample(struct atrf_dsc *dsc); | |
22 | void atben_cleanup(struct atrf_dsc *dsc); | |
23 | ||
24 | #endif /* !ATRF_XTAL_H */ |