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
229
230
231
|
/* mbed USBHost Library
* Copyright (c) 2006-2013 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef USBHOSTSERIAL_H
#define USBHOSTSERIAL_H
#include "USBHostConf.h"
#if USBHOST_SERIAL
#include "USBHost.h"
#include "Stream.h"
#include "MtxCircBuffer.h"
/**
* A class to communicate a USB virtual serial port
*/
class USBHostSerialPort : public Stream {
public:
/**
* Constructor
*/
USBHostSerialPort();
enum IrqType {
RxIrq,
TxIrq
};
enum Parity {
None = 0,
Odd,
Even,
Mark,
Space
};
void connect(USBHost* _host, USBDeviceConnected * _dev,
uint8_t _serial_intf, USBEndpoint* _bulk_in, USBEndpoint* _bulk_out);
/**
* Check the number of bytes available.
*
* @returns the number of bytes available
*/
uint8_t available();
/**
* Attach a member function to call when a packet is received.
*
* @param tptr pointer to the object to call the member function on
* @param mptr pointer to the member function to be called
* @param irq irq type
*/
template<typename T>
inline void attach(T* tptr, void (T::*mptr)(void), IrqType irq = RxIrq) {
if ((mptr != NULL) && (tptr != NULL)) {
if (irq == RxIrq) {
rx.attach(tptr, mptr);
} else {
tx.attach(tptr, mptr);
}
}
}
/**
* Attach a callback called when a packet is received
*
* @param ptr function pointer
*/
inline void attach(void (*fn)(void), IrqType irq = RxIrq) {
if (fn != NULL) {
if (irq == RxIrq) {
rx.attach(fn);
} else {
tx.attach(fn);
}
}
}
/** Set the baud rate of the serial port
*
* @param baudrate The baudrate of the serial port (default = 9600).
*/
void baud(int baudrate = 9600);
/** Set the transmission format used by the Serial port
*
* @param bits The number of bits in a word (default = 8)
* @param parity The parity used (USBHostSerialPort::None, USBHostSerialPort::Odd, USBHostSerialPort::Even, USBHostSerialPort::Mark, USBHostSerialPort::Space; default = USBHostSerialPort::None)
* @param stop The number of stop bits (1 or 2; default = 1)
*/
void format(int bits = 8, Parity parity = USBHostSerialPort::None, int stop_bits = 1);
virtual int writeBuf(const char* b, int s);
virtual int readBuf(char* b, int s);
protected:
virtual int _getc();
virtual int _putc(int c);
private:
USBHost * host;
USBDeviceConnected * dev;
USBEndpoint * bulk_in;
USBEndpoint * bulk_out;
uint32_t size_bulk_in;
uint32_t size_bulk_out;
void init();
MtxCircBuffer<uint8_t, 128> circ_buf;
uint8_t buf[64];
typedef struct {
uint32_t baudrate;
uint8_t stop_bits;
uint8_t parity;
uint8_t data_bits;
} PACKED LINE_CODING;
LINE_CODING line_coding;
void rxHandler();
void txHandler();
FunctionPointer rx;
FunctionPointer tx;
uint8_t serial_intf;
};
#if (USBHOST_SERIAL <= 1)
class USBHostSerial : public IUSBEnumerator, public USBHostSerialPort
{
public:
USBHostSerial();
/**
* Try to connect a serial device
*
* @return true if connection was successful
*/
bool connect();
void disconnect();
/**
* Check if a any serial port is connected
*
* @returns true if a serial device is connected
*/
bool connected();
protected:
USBHost* host;
USBDeviceConnected* dev;
uint8_t port_intf;
int ports_found;
//From IUSBEnumerator
virtual void setVidPid(uint16_t vid, uint16_t pid);
virtual bool parseInterface(uint8_t intf_nb, uint8_t intf_class, uint8_t intf_subclass, uint8_t intf_protocol); //Must return true if the interface should be parsed
virtual bool useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir); //Must return true if the endpoint will be used
private:
bool dev_connected;
};
#else // (USBHOST_SERIAL > 1)
class USBHostMultiSerial : public IUSBEnumerator {
public:
USBHostMultiSerial();
virtual ~USBHostMultiSerial();
USBHostSerialPort* getPort(int port)
{
return port < USBHOST_SERIAL ? ports[port] : NULL;
}
/**
* Try to connect a serial device
*
* @return true if connection was successful
*/
bool connect();
void disconnect();
/**
* Check if a any serial port is connected
*
* @returns true if a serial device is connected
*/
bool connected();
protected:
USBHost* host;
USBDeviceConnected* dev;
USBHostSerialPort* ports[USBHOST_SERIAL];
uint8_t port_intf[USBHOST_SERIAL];
int ports_found;
//From IUSBEnumerator
virtual void setVidPid(uint16_t vid, uint16_t pid);
virtual bool parseInterface(uint8_t intf_nb, uint8_t intf_class, uint8_t intf_subclass, uint8_t intf_protocol); //Must return true if the interface should be parsed
virtual bool useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir); //Must return true if the endpoint will be used
private:
bool dev_connected;
};
#endif // (USBHOST_SERIAL <= 1)
#endif
#endif
|
