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 | * lib/atusb.c - ATUSB access functions library (USB version) |
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 <usb.h> |
18 | |
19 | #include "atusb/ep0.h" |
20 | |
21 | #include "usbopen.h" |
22 | #include "driver.h" |
23 | #include "atusb-common.h" |
24 | |
25 | |
26 | /* ----- register access --------------------------------------------------- */ |
27 | |
28 | |
29 | static void atusb_reg_write(void *handle, uint8_t reg, uint8_t value) |
30 | { |
31 | struct atusb_dsc *dsc = handle; |
32 | int res; |
33 | |
34 | if (dsc->error) |
35 | return; |
36 | |
37 | res = usb_control_msg(dsc->dev, TO_DEV, ATUSB_REG_WRITE, value, reg, |
38 | NULL, 0, 1000); |
39 | if (res < 0) { |
40 | fprintf(stderr, "ATUSB_REG_WRITE: %d\n", res); |
41 | dsc->error = 1; |
42 | } |
43 | } |
44 | |
45 | |
46 | static uint8_t atusb_reg_read(void *handle, uint8_t reg) |
47 | { |
48 | struct atusb_dsc *dsc = handle; |
49 | uint8_t value = 0; |
50 | int res; |
51 | |
52 | if (dsc->error) |
53 | return 0; |
54 | |
55 | res = usb_control_msg(dsc->dev, FROM_DEV, ATUSB_REG_READ, 0, reg, |
56 | (void *) &value, 1, 1000); |
57 | if (res < 0) { |
58 | fprintf(stderr, "ATUSB_REG_READ: %d\n", res); |
59 | dsc->error = 1; |
60 | } |
61 | return value; |
62 | } |
63 | |
64 | |
65 | /* ----- frame buffer access ----------------------------------------------- */ |
66 | |
67 | |
68 | static void atusb_buf_write(void *handle, const void *buf, int size) |
69 | { |
70 | struct atusb_dsc *dsc = handle; |
71 | int res; |
72 | |
73 | if (dsc->error) |
74 | return; |
75 | |
76 | res = usb_control_msg(dsc->dev, TO_DEV, ATUSB_BUF_WRITE, 0, 0, |
77 | (void *) buf, size, 1000); |
78 | if (res < 0) { |
79 | fprintf(stderr, "ATUSB_BUF_WRITE: %d\n", res); |
80 | dsc->error = 1; |
81 | } |
82 | } |
83 | |
84 | |
85 | static int atusb_buf_read(void *handle, void *buf, int size) |
86 | { |
87 | struct atusb_dsc *dsc = handle; |
88 | int res; |
89 | |
90 | if (dsc->error) |
91 | return -1; |
92 | |
93 | res = usb_control_msg(dsc->dev, FROM_DEV, ATUSB_BUF_READ, 0, 0, |
94 | buf, size, 1000); |
95 | if (res < 0) { |
96 | fprintf(stderr, "ATUSB_BUF_READ: %d\n", res); |
97 | dsc->error = 1; |
98 | } |
99 | |
100 | return res; |
101 | } |
102 | |
103 | |
104 | /* ----- SRAM access ------------------------------------------------------- */ |
105 | |
106 | |
107 | static void atusb_sram_write(void *handle, uint8_t addr, uint8_t value) |
108 | { |
109 | struct atusb_dsc *dsc = handle; |
110 | int res; |
111 | |
112 | if (dsc->error) |
113 | return; |
114 | |
115 | res = usb_control_msg(dsc->dev, TO_DEV, ATUSB_SRAM_WRITE, 0, addr, |
116 | &value, 1, 1000); |
117 | if (res < 0) { |
118 | fprintf(stderr, "ATUSB_SRAM_WRITE: %d\n", res); |
119 | dsc->error = 1; |
120 | } |
121 | } |
122 | |
123 | |
124 | static uint8_t atusb_sram_read(void *handle, uint8_t addr) |
125 | { |
126 | struct atusb_dsc *dsc = handle; |
127 | uint8_t value = 0; |
128 | int res; |
129 | |
130 | if (dsc->error) |
131 | return 0; |
132 | |
133 | res = usb_control_msg(dsc->dev, FROM_DEV, ATUSB_SRAM_READ, 0, addr, |
134 | (void *) &value, 1, 1000); |
135 | if (res < 0) { |
136 | fprintf(stderr, "ATUSB_SRAM_READ: %d\n", res); |
137 | dsc->error = 1; |
138 | } |
139 | return value; |
140 | } |
141 | |
142 | |
143 | /* ----- driver interface -------------------------------------------------- */ |
144 | |
145 | |
146 | struct atrf_driver atusb_driver = { |
147 | .name = "usb", |
148 | .open = atusb_open, |
149 | .close = atusb_close, |
150 | .error = atusb_error, |
151 | .clear_error = atusb_clear_error, |
152 | .reset = atusb_reset, |
153 | .reset_rf = atusb_reset_rf, |
154 | .test_mode = atusb_test_mode, |
155 | .slp_tr = atusb_slp_tr, |
156 | .set_clkm = atusb_set_clkm, |
157 | .reg_write = atusb_reg_write, |
158 | .reg_read = atusb_reg_read, |
159 | .buf_write = atusb_buf_write, |
160 | .buf_read = atusb_buf_read, |
161 | .sram_write = atusb_sram_write, |
162 | .sram_read = atusb_sram_read, |
163 | .interrupt_wait = atusb_interrupt_wait, |
164 | .rx_mode = atusb_rx_mode, |
165 | .rx = atusb_rx, |
166 | .tx = atusb_tx, |
167 | }; |
168 |