IEEE 802.15.4 subsystem
Sign in or create your account | Project List | Help
IEEE 802.15.4 subsystem Git Source Tree
Root/
Source at commit 624caeb00652f6118dc64698b7dad6fa3e5bdcc2 created 7 years 6 days ago. By Werner Almesberger, atusb/: use VR, POWERED, and LED from kicad-libs | |
---|---|
1 | /* |
2 | * lib/cwtest.c - Set up AT86RF230/231 constant wave test mode |
3 | * |
4 | * Written 2010-2011, 2013 by Werner Almesberger |
5 | * Copyright 2010-2011, 2013 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 <stdint.h> |
15 | #include <stdlib.h> |
16 | #include <stdio.h> |
17 | #include <string.h> |
18 | |
19 | #include "at86rf230.h" |
20 | #include "atrf.h" |
21 | #include "misctxrx.h" |
22 | |
23 | #include "cwtest.h" |
24 | |
25 | |
26 | static int last_cont_tx; /* @@@ hack for resuming on the 230 */ |
27 | |
28 | |
29 | int cw_test_needs_reset(struct atrf_dsc *dsc) |
30 | { |
31 | if (atrf_usb_handle(dsc)) |
32 | return 1; |
33 | if (atrf_identify(dsc) == atrf_at86rf230) |
34 | return 1; |
35 | return 0; |
36 | } |
37 | |
38 | |
39 | static void enter_test_mode_230(struct atrf_dsc *dsc, uint8_t cont_tx) |
40 | { |
41 | atrf_buf_write(dsc, "", 1); |
42 | atrf_reg_write(dsc, REG_CONT_TX_0, CONT_TX_MAGIC); |
43 | atrf_reg_write(dsc, REG_CONT_TX_1, cont_tx); |
44 | |
45 | if (!atrf_test_mode(dsc)) { |
46 | atrf_reset_rf(dsc); |
47 | fprintf(stderr, "device does not support test mode\n"); |
48 | exit(1); |
49 | } |
50 | |
51 | atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_PLL_ON); |
52 | wait_for_interrupt(dsc, IRQ_PLL_LOCK, IRQ_PLL_LOCK, 0); |
53 | |
54 | atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TX_START); |
55 | } |
56 | |
57 | |
58 | static void prepare_test_mode_231(struct atrf_dsc *dsc, uint8_t cont_tx) |
59 | { |
60 | uint8_t buf[127]; |
61 | uint8_t status; |
62 | |
63 | switch (cont_tx) { |
64 | case CONT_TX_M2M: |
65 | fprintf(stderr, |
66 | "-2 MHz mode is not supported by the AT86RF231\n"); |
67 | atrf_close(dsc); |
68 | exit(1); |
69 | case CONT_TX_M500K: |
70 | memset(buf, 0, sizeof(buf)); |
71 | break; |
72 | case CONT_TX_P500K: |
73 | memset(buf, 0xff, sizeof(buf)); |
74 | break; |
75 | default: |
76 | abort(); |
77 | } |
78 | |
79 | atrf_reg_write(dsc, REG_IRQ_MASK, IRQ_PLL_LOCK); /* 2 */ |
80 | atrf_reg_write(dsc, REG_TRX_CTRL_1, 0); /* 3 */ |
81 | atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_FORCE_TRX_OFF); /* 4 */ |
82 | /* deleted step 5 - we don't need to enable CLKM */ |
83 | |
84 | status = atrf_reg_read(dsc, REG_TRX_STATUS) & TRX_STATUS_MASK; /* 8 */ |
85 | if (status != TRX_STATUS_TRX_OFF) { |
86 | fprintf(stderr, "expected status 0x%02x, got 0x%02x\n", |
87 | TRX_STATUS_TRX_OFF, status); |
88 | exit(1); |
89 | } |
90 | |
91 | atrf_reg_write(dsc, REG_CONT_TX_0, CONT_TX_MAGIC); /* 9 */ |
92 | atrf_reg_write(dsc, REG_TRX_CTRL_2, OQPSK_DATA_RATE_2000); /*10 */ |
93 | atrf_reg_write(dsc, REG_RX_CTRL, 0xa7); /*11 */ |
94 | |
95 | atrf_buf_write(dsc, buf, sizeof(buf)); /*12 */ |
96 | } |
97 | |
98 | |
99 | static void start_test_mode_231(struct atrf_dsc *dsc) |
100 | { |
101 | atrf_reg_write(dsc, REG_PART_NUM, 0x54); /*13 */ |
102 | atrf_reg_write(dsc, REG_PART_NUM, 0x46); /*14 */ |
103 | |
104 | atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_PLL_ON); /*15 */ |
105 | wait_for_interrupt(dsc, IRQ_PLL_LOCK, IRQ_PLL_LOCK, 0); /*16 */ |
106 | |
107 | atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TX_START); /*17 */ |
108 | } |
109 | |
110 | |
111 | void cw_test_begin(struct atrf_dsc *dsc, uint8_t cont_tx) |
112 | { |
113 | switch (atrf_identify(dsc)) { |
114 | case atrf_at86rf230: |
115 | enter_test_mode_230(dsc, cont_tx); |
116 | last_cont_tx = cont_tx; |
117 | break; |
118 | case atrf_at86rf231: |
119 | prepare_test_mode_231(dsc, cont_tx); |
120 | start_test_mode_231(dsc); |
121 | break; |
122 | default: |
123 | abort(); |
124 | } |
125 | } |
126 | |
127 | |
128 | void cw_test_resume(struct atrf_dsc *dsc) |
129 | { |
130 | switch (atrf_identify(dsc)) { |
131 | case atrf_at86rf230: |
132 | enter_test_mode_230(dsc, last_cont_tx); |
133 | break; |
134 | case atrf_at86rf231: |
135 | start_test_mode_231(dsc); |
136 | break; |
137 | default: |
138 | abort(); |
139 | } |
140 | } |
141 | |
142 | |
143 | void cw_test_end(struct atrf_dsc *dsc) |
144 | { |
145 | if (atrf_identify(dsc) == atrf_at86rf231) |
146 | atrf_reg_write(dsc, REG_PART_NUM, 0); |
147 | |
148 | atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_FORCE_TRX_OFF); |
149 | |
150 | /* |
151 | * atrf_reset_rf can take a long time. I appears that at least the |
152 | * AT86RF231 also exits test mode if we send it to sleep for a |
153 | * moment. |
154 | */ |
155 | if (cw_test_needs_reset(dsc)) |
156 | atrf_reset_rf(dsc); |
157 | else { |
158 | usleep(2); /* table 7-1: tTR12(typ) = 1 us */ |
159 | atrf_slp_tr(dsc, 1, 0); |
160 | usleep(10); /* table 7-1: tTR3(typ) doesn't really apply */ |
161 | atrf_slp_tr(dsc, 0, 0); |
162 | usleep(500); /* table 7-1: tTR2(typ) = 380 */ |
163 | } |
164 | } |
165 |