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
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
/*
* Copyright (c) 2025, sakumisu
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <rtthread.h>
#include <rtdevice.h>
#include "usbh_core.h"
#include "usbh_serial.h"
static rt_err_t rt_usbh_serial_open(struct rt_device *dev, rt_uint16_t oflag)
{
struct usbh_serial *serial;
RT_ASSERT(dev != RT_NULL && dev->user_data != RT_NULL);
serial = (struct usbh_serial *)dev->user_data;
serial = usbh_serial_open(serial->hport->config.intf[serial->intf].devname, USBH_SERIAL_O_RDWR | USBH_SERIAL_O_NONBLOCK);
if (serial == RT_NULL) {
USB_LOG_ERR("serial open failed\n");
return -RT_ERROR;
}
struct usbh_serial_termios termios;
memset(&termios, 0, sizeof(termios));
termios.baudrate = 115200;
termios.stopbits = 0;
termios.parity = 0;
termios.databits = 8;
termios.rtscts = false;
termios.rx_timeout = 0;
usbh_serial_control(serial, USBH_SERIAL_CMD_SET_ATTR, &termios);
return RT_EOK;
}
static rt_err_t rt_usbh_serial_close(struct rt_device *dev)
{
struct usbh_serial *serial;
RT_ASSERT(dev != RT_NULL && dev->user_data != RT_NULL);
serial = (struct usbh_serial *)dev->user_data;
usbh_serial_close(serial);
return RT_EOK;
}
static rt_ssize_t rt_usbh_serial_read(struct rt_device *dev,
rt_off_t pos,
void *buffer,
rt_size_t size)
{
struct usbh_serial *serial;
RT_ASSERT(dev != RT_NULL && dev->user_data != RT_NULL);
serial = (struct usbh_serial *)dev->user_data;
return usbh_serial_read(serial, buffer, size);
}
static rt_ssize_t rt_usbh_serial_write(struct rt_device *dev,
rt_off_t pos,
const void *buffer,
rt_size_t size)
{
struct usbh_serial *serial;
int ret = 0;
rt_uint8_t *align_buf;
RT_ASSERT(dev != RT_NULL && dev->user_data != RT_NULL);
serial = (struct usbh_serial *)dev->user_data;
align_buf = (rt_uint8_t *)buffer;
if ((uint32_t)buffer & (CONFIG_USB_ALIGN_SIZE - 1)) {
align_buf = rt_malloc_align(USB_ALIGN_UP(size, CONFIG_USB_ALIGN_SIZE), CONFIG_USB_ALIGN_SIZE);
if (!align_buf) {
USB_LOG_ERR("serial get align buf failed\n");
return 0;
}
usb_memcpy(align_buf, buffer, size);
}
ret = usbh_serial_write(serial, align_buf, size);
if ((uint32_t)buffer & (CONFIG_USB_ALIGN_SIZE - 1)) {
rt_free_align(align_buf);
}
return ret;
}
static rt_err_t rt_usbh_serial_control(struct rt_device *dev,
int cmd,
void *args)
{
struct usbh_serial *serial;
struct serial_configure *config;
int ret = -RT_EINVAL;
RT_ASSERT(dev != RT_NULL && dev->user_data != RT_NULL);
serial = (struct usbh_serial *)dev->user_data;
switch (cmd) {
case RT_DEVICE_CTRL_CONFIG: {
config = (struct serial_configure *)args;
struct usbh_serial_termios termios;
memset(&termios, 0, sizeof(termios));
termios.baudrate = config->baud_rate;
termios.stopbits = 0;
termios.parity = config->parity;
termios.databits = config->data_bits;
termios.rtscts = false;
termios.rx_timeout = 0;
usbh_serial_control(serial, USBH_SERIAL_CMD_SET_ATTR, &termios);
} break;
default:
break;
}
return ret;
}
#ifdef RT_USING_DEVICE_OPS
const static struct rt_device_ops usbh_serial_ops = {
NULL,
rt_usbh_serial_open,
rt_usbh_serial_close,
rt_usbh_serial_read,
rt_usbh_serial_write,
rt_usbh_serial_control
};
#endif
static void rt_usbh_serial_rx_complete_callback(struct usbh_serial *serial, int nbytes)
{
struct rt_device *device;
RT_ASSERT(serial != RT_NULL && serial->user_data != RT_NULL);
device = (struct rt_device *)serial->user_data;
if (device->rx_indicate) {
device->rx_indicate(device, nbytes);
}
}
rt_err_t usbh_serial_register(struct usbh_serial *serial)
{
rt_err_t ret;
struct rt_device *device;
RT_ASSERT(serial != RT_NULL);
device = rt_malloc(sizeof(struct rt_device));
if (device == RT_NULL) {
USB_LOG_ERR("serial device malloc failed\n");
return -RT_ENOMEM;
}
memset(device, 0, sizeof(struct rt_device));
device->type = RT_Device_Class_Char;
device->rx_indicate = RT_NULL;
device->tx_complete = RT_NULL;
#ifdef RT_USING_DEVICE_OPS
device->ops = &usbh_serial_ops;
#else
device->init = NULL;
device->open = rt_usbh_serial_open;
device->close = rt_usbh_serial_close;
device->read = rt_usbh_serial_read;
device->write = rt_usbh_serial_write;
device->control = rt_usbh_serial_control;
#endif
device->user_data = serial;
serial->user_data = device;
serial->rx_complete_callback = rt_usbh_serial_rx_complete_callback;
/* skip /dev/ to avoid BAD file */
const char *dev_name = serial->hport->config.intf[serial->intf].devname;
if (strncmp(dev_name, "/dev/", 5) == 0) {
dev_name += 5;
}
/* register a character device */
ret = rt_device_register(device, dev_name, RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_REMOVABLE);
#ifdef RT_USING_POSIX_DEVIO
/* set fops */
device->fops = &usbh_serial_fops;
#endif
return ret;
}
void usbh_serial_unregister(struct usbh_serial *serial)
{
struct rt_device *device;
RT_ASSERT(serial != NULL && serial->user_data != NULL);
device = (struct rt_device *)serial->user_data;
rt_device_unregister(device);
rt_free(device);
}
void usbh_serial_run(struct usbh_serial *serial)
{
usbh_serial_register(serial);
}
void usbh_serial_stop(struct usbh_serial *serial)
{
usbh_serial_unregister(serial);
}
|
