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
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
|
package org.subsurfacedivelog.mobile;
import com.hoho.android.usbserial.driver.*;
import android.hardware.usb.UsbDeviceConnection;
import android.hardware.usb.UsbManager;
import android.hardware.usb.UsbDevice;
import android.os.PowerManager;
import android.os.PowerManager.WakeLock;
import android.content.Context;
import android.util.Log;
import android.app.PendingIntent;
import android.content.Intent;
import org.subsurfacedivelog.mobile.SubsurfaceMobileActivity;
import java.lang.System;
import java.lang.Class;
import java.lang.reflect.Constructor;
import java.lang.Thread;
import java.util.Queue;
import java.util.List;
import java.util.LinkedList;
import java.lang.Math;
import java.util.Date;
public class AndroidSerial {
private static final String TAG = "AndroidSerial";
private static final int DC_STATUS_SUCCESS = 0;
private static final int DC_STATUS_DONE = 1;
private static final int DC_STATUS_UNSUPPORTED = -1;
private static final int DC_STATUS_INVALIDARGS = -2;
private static final int DC_STATUS_NOMEMORY = -3;
private static final int DC_STATUS_NODEVICE = -4;
private static final int DC_STATUS_NOACCESS = -5;
private static final int DC_STATUS_IO = -6;
private static final int DC_STATUS_TIMEOUT = -7;
private static final int DC_STATUS_PROTOCOL = -8;
private static final int DC_STATUS_DATAFORMAT = -9;
private static final int DC_STATUS_CANCELLED = -1;
/**
* The parity checking scheme.
* Matches us-serial-for-android
*/
private static final int DC_PARITY_NONE = 0;
private static final int DC_PARITY_ODD = 1;
private static final int DC_PARITY_EVEN = 2;
private static final int DC_PARITY_MARK = 3;
private static final int DC_PARITY_SPACE = 4;
/**
* The number of stop bits.
* Has to be translated for usb-serial-for-android
*/
private static final int DC_STOPBITS_ONE = 0; /**< 1 stop bit */
private static final int DC_STOPBITS_ONEPOINTFIVE = 1; /**< 1.5 stop bits*/
private static final int DC_STOPBITS_TWO = 2; /**< 2 stop bits */
/**
* The direction of the data transmission.
*/
private static final int DC_DIRECTION_INPUT = 1; /**< Input direction */
private static final int DC_DIRECTION_OUTPUT = 2; /**< Output direction */
private static final int DC_DIRECTION_ALL = 3; /**< All directions */
private UsbSerialPort usbSerialPort;
private int timeout = 0;
private LinkedList<Byte> readBuffer = new LinkedList<Byte>();
private WakeLock wakeLock = null;
private static String printQueue(LinkedList<Byte> readBuffer)
{
String str = "" + readBuffer.size() + " elements: ";
for (byte element : readBuffer) {
str = str + String.format("%02X", element);
}
return str;
}
private AndroidSerial(UsbSerialPort usbSerialPort)
{
this.usbSerialPort = usbSerialPort;
PowerManager powerManager = (PowerManager) SubsurfaceMobileActivity.getAppContext().getSystemService(Context.POWER_SERVICE);
wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "Subsurface::AndroidSerialWakelock");
wakeLock.acquire();
}
public static AndroidSerial open_android_serial(UsbDevice usbDevice, String driverClassName)
{
try {
Log.d(TAG, "in " + Thread.currentThread().getStackTrace()[2].getMethodName());
// Find all available drivers from attached devices.
Context context = SubsurfaceMobileActivity.getAppContext();
UsbManager manager = (UsbManager) context.getSystemService(Context.USB_SERVICE);
if (usbDevice == null) {
Log.e(TAG, "usbDevice == null");
return null;
}
UsbSerialDriver driver = null;
if (driverClassName.length() == 0) {
ProbeTable usbSerialProbetable = UsbSerialProber.getDefaultProbeTable();
usbSerialProbetable.addProduct(0x0403, 0xf460, FtdiSerialDriver.class); // Oceanic Custom PID
usbSerialProbetable.addProduct(0x0403, 0xf680, FtdiSerialDriver.class); // Suunto Custom PID
usbSerialProbetable.addProduct(0x0403, 0x87d0, FtdiSerialDriver.class); // Cressi (Leonardo) Custom PID
usbSerialProbetable.addProduct(0x04B8, 0x0521, ProlificSerialDriver.class); // Mares (Nemo Sport) / Cressi Custom PID
usbSerialProbetable.addProduct(0x04B8, 0x0521, ProlificSerialDriver.class); // Zeagle Custom PID
usbSerialProbetable.addProduct(0xFFFF, 0x0005, CdcAcmSerialDriver.class); // Mares Icon HD Custom PID
UsbSerialProber usbSerialProber = new UsbSerialProber(usbSerialProbetable);
driver = usbSerialProber.probeDevice(usbDevice);
if (driver == null) {
Log.w(TAG, "Could not find a driver for the usb device " + usbDevice);
return null;
}
Log.i(TAG, "Using autodetected driver class " + driver.getClass().getSimpleName());
} else {
final Class<? extends UsbSerialDriver> driverClass = Class.forName("com.hoho.android.usbserial.driver." + driverClassName).asSubclass(UsbSerialDriver.class);
if (driverClass == null) {
Log.w(TAG, "Could not find driver class " + driverClassName);
return null;
}
try {
final Constructor<? extends UsbSerialDriver> ctor =
driverClass.getConstructor(UsbDevice.class);
driver = ctor.newInstance(usbDevice);
} catch (Exception e) {
Log.w(TAG, "Could not load user-specified driver class " + driverClassName, e);
return null;
}
Log.i(TAG, "Using user-specified driver class " + driver.getClass().getSimpleName());
}
// Open a connection to the first available driver.
UsbDeviceConnection connection = manager.openDevice(usbDevice);
if (connection == null) {
manager.requestPermission(usbDevice, PendingIntent.getBroadcast(context, 0, new Intent("org.subsurfacedivelog.mobile.USB_PERMISSION"), 0));
Log.w(TAG, "Could not open device. Requesting permission.");
return null;
}
Log.i(TAG, "Num ports: " + driver.getPorts().size());
UsbSerialPort usbSerialPort = driver.getPorts().get(0); // Most devices have just one port (port 0)
usbSerialPort.open(connection);
Log.i(TAG, "Opened serial device " + usbSerialPort);
return new AndroidSerial(usbSerialPort);
} catch (Exception e) {
Log.e(TAG, "Error in " + Thread.currentThread().getStackTrace()[2].getMethodName(), e);
return null;
}
}
/* dc_status_t */
public int set_timeout(int timeout)
{
Log.d(TAG, "in " + Thread.currentThread().getStackTrace()[2].getMethodName());
this.timeout = timeout;
return AndroidSerial.DC_STATUS_SUCCESS;
}
/* dc_status_t */
public int set_dtr(boolean value)
{
Log.d(TAG, "in " + Thread.currentThread().getStackTrace()[2].getMethodName());
try {
usbSerialPort.setDTR(value);
} catch (Exception e) {
Log.e(TAG, "Error in " + Thread.currentThread().getStackTrace()[2].getMethodName(), e);
return AndroidSerial.DC_STATUS_IO;
}
return AndroidSerial.DC_STATUS_SUCCESS;
}
/* dc_status_t */
public int set_rts(boolean value)
{
Log.d(TAG, "in " + Thread.currentThread().getStackTrace()[2].getMethodName());
try {
usbSerialPort.setRTS(value);
} catch (Exception e) {
Log.e(TAG, "Error in " + Thread.currentThread().getStackTrace()[2].getMethodName(), e);
return AndroidSerial.DC_STATUS_IO;
}
return AndroidSerial.DC_STATUS_SUCCESS;
}
/* length of read data, or dc_status_t if not successful */
/*
// Currently commented out since a non-blocking get_available is not possible due to usb-serial-for-android limitations
public int get_available() {
Log.d(TAG, "in " + Thread.currentThread().getStackTrace()[2].getMethodName());
try {
byte[] readData = new byte[64]; // TODO magic number
int len = usbSerialPort.read(readData, 250); // TODO magic number
for (int i = 0; i < len; i++) {
readBuffer.add(readData[i]);
}
return readBuffer.size();
} catch (Exception e) {
Log.e(TAG, "Error in " + Thread.currentThread().getStackTrace()[2].getMethodName(), e);
return AndroidSerial.DC_STATUS_IO;
}
}
*/
// Flow control is not implemented in usb-serial-for-android. It's not used by any dive computer anyways...
/* dc_status_t */
public int configure(int baudrate, int databits, /*dc_parity_t*/ int parity, /*dc_stopbits_t*/ int stopbits)
{
Log.d(TAG, "in " + Thread.currentThread().getStackTrace()[2].getMethodName() + ", baudrate=" + baudrate + ", databits=" + databits + ", parity=" + parity + ", stopbits=" + stopbits);
int translated_stopbits = 0;
switch(stopbits) {
case AndroidSerial.DC_STOPBITS_ONE:
translated_stopbits = UsbSerialPort.STOPBITS_1;
break;
case AndroidSerial.DC_STOPBITS_ONEPOINTFIVE:
translated_stopbits = UsbSerialPort.STOPBITS_1_5;
break;
case AndroidSerial.DC_STOPBITS_TWO:
translated_stopbits = UsbSerialPort.STOPBITS_2;
break;
}
try {
usbSerialPort.setParameters(baudrate, databits, translated_stopbits, parity);
} catch (Exception e) {
Log.e(TAG, "Error in " + Thread.currentThread().getStackTrace()[2].getMethodName(), e);
return AndroidSerial.DC_STATUS_IO;
}
return AndroidSerial.DC_STATUS_SUCCESS;
}
/* length of read data, or dc_status_t if not successful */
public int read(byte[] data)
{
Log.d(TAG, "in " + Thread.currentThread().getStackTrace()[2].getMethodName());
try {
Log.d(TAG, "read length: " + data.length);
int toReadFromHwLength = data.length - readBuffer.size();
int arraylength = (toReadFromHwLength % 64) != 0 ? toReadFromHwLength + (64 - (toReadFromHwLength % 64)): toReadFromHwLength; // use blocks of 64 for reading
long startTime = (new Date()).getTime();
// while we don't have enough in the buffer, try to read from HW until there is enough or timeout is reached.
while (toReadFromHwLength > 0 && (startTime + timeout > (new Date()).getTime() || timeout == 0)) {
// Read and append to buffer
byte[] readFromHwData = new byte[arraylength];
int actuallyReadFromHwLength = usbSerialPort.read(readFromHwData, 0); // This behaves differently on different chipsets. CP210x blocks, FTDI seems to return instantly.
for (int i = 0; i < actuallyReadFromHwLength; i++ ) {
readBuffer.add(readFromHwData[i]);
}
toReadFromHwLength = data.length - readBuffer.size();
arraylength = (toReadFromHwLength % 64) != 0 ? toReadFromHwLength + (64 - (toReadFromHwLength % 64)): toReadFromHwLength; // use blocks of 64 for reading
}
//Log.d(TAG, "read buffer: " + printQueue(readBuffer));
int returnLength = 0;
for (returnLength = 0; returnLength < data.length; returnLength++) {
if (readBuffer.isEmpty()) break;
data[returnLength] = readBuffer.remove();
}
Log.d(TAG, "return length: " + returnLength);
return returnLength;
} catch (Exception e) {
Log.e(TAG, "Error in " + Thread.currentThread().getStackTrace()[2].getMethodName(), e);
return AndroidSerial.DC_STATUS_IO;
}
}
/* number of bytes written, or dc_status_t */
public int write (byte[] data)
{
Log.d(TAG, "in " + Thread.currentThread().getStackTrace()[2].getMethodName());
try {
Log.d(TAG, "write length: " + data.length);
int retval = usbSerialPort.write(data, timeout);
Log.d(TAG, "actual write length: " + retval);
return retval;
} catch (Exception e) {
Log.e(TAG, "Error in " + Thread.currentThread().getStackTrace()[2].getMethodName(), e);
return AndroidSerial.DC_STATUS_IO;
}
}
/* dc_status_t */
public int purge (/*dc_direction_t*/ int direction)
{
Log.d(TAG, "in " + Thread.currentThread().getStackTrace()[2].getMethodName());
try {
if ((direction | AndroidSerial.DC_DIRECTION_INPUT) > 0) readBuffer.clear();
boolean retval = this.usbSerialPort.purgeHwBuffers((direction | AndroidSerial.DC_DIRECTION_OUTPUT) > 0, (direction | AndroidSerial.DC_DIRECTION_INPUT) > 0);
return retval ? AndroidSerial.DC_STATUS_SUCCESS : AndroidSerial.DC_STATUS_IO;
} catch (Exception e) {
Log.e(TAG, "Error in " + Thread.currentThread().getStackTrace()[2].getMethodName(), e);
return AndroidSerial.DC_STATUS_IO;
}
}
/*dc_status_t*/
public int close ()
{
Log.d(TAG, "in " + Thread.currentThread().getStackTrace()[2].getMethodName());
try {
usbSerialPort.close();
if(wakeLock != null)
wakeLock.release();
return AndroidSerial.DC_STATUS_SUCCESS;
} catch (Exception e) {
Log.e(TAG, "Error in " + Thread.currentThread().getStackTrace()[2].getMethodName(), e);
return AndroidSerial.DC_STATUS_IO;
}
}
}
|
