1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/*
* This file is part of the libjaylink project.
*
* Copyright (C) 2021 Marc Schink <dev@zapb.de>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdint.h>
#include <stdbool.h>
#include "libjaylink.h"
#include "libjaylink-internal.h"
/**
* @file
*
* Renesas’ single-wire debug interface (FINE) functions.
*/
/** @cond PRIVATE */
#define CMD_FINE_IO 0xe0
/**
* Perform a FINE I/O operation.
*
* @note This function must only be used if the #JAYLINK_TIF_FINE interface is
* available and selected.
*
* TODO: Parameter documentation
*
* @retval JAYLINK_OK Success.
* @retval JAYLINK_ERR_ARG Invalid arguments.
* @retval JAYLINK_ERR_TIMEOUT A timeout occurred.
* @retval JAYLINK_ERR_IO Input/output error.
* @retval JAYLINK_ERR_DEV_NO_MEMORY Not enough memory on the device to perform
* the operation.
* @retval JAYLINK_ERR_DEV Unspecified device error.
* @retval JAYLINK_ERR Other error conditions.
*
* @see jaylink_select_interface()
* @see jaylink_set_speed()
*
* @since 0.2.0
*/
JAYLINK_API int jaylink_fine_io(struct jaylink_device_handle *devh,
const uint8_t *out, uint8_t *in, uint32_t out_length,
uint32_t in_length, uint32_t other_param)
{
int ret;
struct jaylink_context *ctx;
uint8_t buf[13];
if (!devh || !out || !in)
return JAYLINK_ERR_ARG;
ctx = devh->dev->ctx;
ret = transport_start_write_read(devh, 13 + out_length, 4 + in_length,
true);
if (ret != JAYLINK_OK) {
log_err(ctx, "transport_start_write_read() failed: %s",
jaylink_strerror(ret));
return ret;
}
buf[0] = CMD_FINE_IO;
buffer_set_u32(buf, out_length, 1);
buffer_set_u32(buf, in_length, 5);
buffer_set_u32(buf, other_param, 9);
ret = transport_write(devh, buf, 13);
if (ret != JAYLINK_OK) {
log_err(ctx, "transport_write() failed: %s",
jaylink_strerror(ret));
return ret;
}
ret = transport_write(devh, out, out_length);
if (ret != JAYLINK_OK) {
log_err(ctx, "transport_write() failed: %s",
jaylink_strerror(ret));
return ret;
}
ret = transport_read(devh, in, in_length);
if (ret != JAYLINK_OK) {
log_err(ctx, "transport_read() failed: %s",
jaylink_strerror(ret));
return ret;
}
ret = transport_read(devh, buf, 4);
uint32_t status = buffer_get_u32(buf, 0);
if (ret != JAYLINK_OK) {
log_err(ctx, "transport_read() failed: %s",
jaylink_strerror(ret));
return ret;
}
/* TODO: Handle status. */
(void)status;
return JAYLINK_OK;
}
|
