Root/tools/lib/atusb.c

Source at commit c9e52c1978ed11ef9c404b381131b67703705fbb created 7 years 3 months ago.
By Werner Almesberger, atusb/atusb.kicad_pcb: bring back component references
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
29static 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
46static 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
68static 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
85static 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
107static 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
124static 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
146struct 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

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