| changeset 5 | 37602e25a04a |
| parent 4 | df6a40031aa5 |
| child 7 | aac14789cd1d |
| 4:df6a40031aa5 | 5:37602e25a04a |
|---|---|
14 #include <stdio.h> |
14 #include <stdio.h> |
15 #include <string.h> |
15 #include <string.h> |
16 #include <syslog.h> |
16 #include <syslog.h> |
17 #include <unistd.h> |
17 #include <unistd.h> |
18 #include <termios.h> |
18 #include <termios.h> |
19 #include <signal.h> |
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19 #include <sys/io.h> |
20 #include <sys/io.h> |
20 #include <sys/ioctl.h> |
21 #include <sys/ioctl.h> |
21 #include <linux/ppdev.h> |
22 #include <linux/ppdev.h> |
22 #include <linux/parport.h> |
23 #include <linux/parport.h> |
23 |
24 |
24 |
25 |
25 |
26 |
26 #include "port.h" |
27 #include "port.h" |
28 |
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29 |
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30 |
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27 |
31 |
28 namespace GLCD |
32 namespace GLCD |
29 { |
33 { |
30 |
34 |
31 static inline int port_in(int port) |
35 static inline int port_in(int port) |
280 |
284 |
281 cSerialPort::~cSerialPort() |
285 cSerialPort::~cSerialPort() |
282 { |
286 { |
283 } |
287 } |
284 |
288 |
285 int cSerialPort::Open(const char * device) |
289 int cSerialPort::Open(const char * device, void (*FP)(int)) |
286 { |
290 { |
287 struct termios options; |
291 struct termios options; |
292 struct sigaction saio; |
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288 |
293 |
289 fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY); |
294 fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY); |
290 if (fd == -1) |
295 if (fd == -1) |
291 { |
296 { |
292 printf("error opening port\n"); |
297 printf("error opening port\n"); |
293 return -1; |
298 return -1; |
294 } |
299 } |
295 //fcntl(fd, F_SETFL, FNDELAY); |
300 |
296 fcntl(fd, F_SETFL, 0); |
301 |
302 // install the signal handler before making the device asynchronous/ |
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303 saio.sa_handler = FP; |
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304 sigemptyset (&saio.sa_mask); |
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305 saio.sa_flags = 0; |
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306 saio.sa_restorer = NULL; |
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307 sigaction(SIGIO,&saio,NULL); |
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308 |
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309 // allow the process to receive SIGIO |
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310 fcntl(fd, F_SETOWN, getpid()); |
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311 // Make the file descriptor asynchronous |
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312 fcntl(fd, F_SETFL, FASYNC); |
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297 |
313 |
298 tcgetattr(fd, &options); |
314 tcgetattr(fd, &options); |
299 |
315 |
300 cfsetispeed(&options, B921600); |
316 cfsetispeed(&options, B921600); |
301 cfsetospeed(&options, B921600); |
317 cfsetospeed(&options, B921600); |
326 return -1; |
342 return -1; |
327 close(fd); |
343 close(fd); |
328 return 0; |
344 return 0; |
329 } |
345 } |
330 |
346 |
331 int cSerialPort::ReadData(unsigned char * data) |
347 int cSerialPort::ReadData(unsigned char * data, int num) |
332 { |
348 { |
333 if (fd == -1) |
349 if (fd == -1) |
334 return 0; |
350 return 0; |
335 return read(fd, data, 1); |
351 return read(fd, data, num); |
336 } |
352 } |
337 |
353 |
338 void cSerialPort::WriteData(unsigned char data) |
354 void cSerialPort::WriteData(unsigned char data) |
339 { |
355 { |
340 WriteData(&data, 1); |
356 WriteData(&data, 1); |
345 if (fd == -1) |
361 if (fd == -1) |
346 return; |
362 return; |
347 write(fd, data, length); |
363 write(fd, data, length); |
348 } |
364 } |
349 |
365 |
366 |
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350 } // end of namespace |
367 } // end of namespace |
368 |