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serial: Use OS-independent flags for serial port opening. 

Add SERIAL_RDWR, SERIAL_RDONLY, and SERIAL_NONBLOCK (for now), which are
mapped to the respective OS-specific mechanism in serial_open().
This commit is contained in:
Uwe Hermann 2012-12-02 12:45:54 +01:00
parent 0f84cda05d
commit a54dd31e38
10 changed files with 48 additions and 25 deletions
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4
hardware/agilent-dmm/api.c
View File

@ -145,7 +145,7 @@ static GSList *hw_scan(GSList *options)
if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
return NULL;
if (serial_open(serial, O_RDWR|O_NONBLOCK) != SR_OK)
if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
return NULL;
serial_flush(serial);
@ -218,7 +218,7 @@ static int hw_dev_open(struct sr_dev_inst *sdi)
return SR_ERR_BUG;
}
if (serial_open(devc->serial, O_RDWR|O_NONBLOCK) != SR_OK)
if (serial_open(devc->serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
return SR_ERR;
sdi->status = SR_ST_ACTIVE;

2
hardware/colead-slm/api.c
View File

@ -163,7 +163,7 @@ static int hw_dev_open(struct sr_dev_inst *sdi)
return SR_ERR_BUG;
}
if (serial_open(devc->serial, O_RDWR) != SR_OK)
if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK)
return SR_ERR;
sdi->status = SR_ST_ACTIVE;

35
hardware/common/serial.c
View File

@ -55,8 +55,8 @@ static HANDLE hdl;
* Open the specified serial port.
*
* @param serial Previously initialized serial port structure.
* @param flags Flags to use when opening the serial port.
* TODO: Abstract 'flags', currently they're OS-specific!
* @param flags Flags to use when opening the serial port. Possible flags
* include SERIAL_RDWR, SERIAL_RDONLY, SERIAL_NONBLOCK.
*
* If the serial structure contains a serialcomm string, it will be
* passed to serial_set_paramstr() after the port is opened.
@ -65,6 +65,10 @@ static HANDLE hdl;
*/
SR_PRIV int serial_open(struct sr_serial_dev_inst *serial, int flags)
{
int flags_local = 0;
#ifdef _WIN32
DWORD desired_access = 0, flags_and_attributes = 0;
#endif
if (!serial) {
sr_dbg("Invalid serial port.");
@ -74,19 +78,36 @@ SR_PRIV int serial_open(struct sr_serial_dev_inst *serial, int flags)
sr_spew("Opening serial port '%s' (flags %d).", serial->port, flags);
#ifdef _WIN32
hdl = CreateFile(serial->port, GENERIC_READ | GENERIC_WRITE, 0, 0,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
/* Map 'flags' to the OS-specific settings. */
desired_access |= GENERIC_READ;
flags_and_attributes = FILE_ATTRIBUTE_NORMAL;
if (flags & SERIAL_RDWR)
desired_access |= GENERIC_WRITE;
if (flags & SERIAL_NONBLOCK)
flags_and_attributes |= FILE_FLAG_OVERLAPPED;
hdl = CreateFile(serial->port, desired_access, 0, 0,
OPEN_EXISTING, flags_and_attributes, 0);
if (hdl == INVALID_HANDLE_VALUE) {
sr_err("Error opening serial port '%s'.", serial->port);
return SR_ERR;
}
#else
if ((serial->fd = open(serial->port, flags)) < 0) {
/* Map 'flags' to the OS-specific settings. */
if (flags & SERIAL_RDWR)
flags_local |= O_RDWR;
if (flags & SERIAL_RDONLY)
flags_local |= O_RDONLY;
if (flags & SERIAL_NONBLOCK)
flags_local |= O_NONBLOCK;
if ((serial->fd = open(serial->port, flags_local)) < 0) {
sr_err("Error opening serial port '%s': %s.", serial->port,
strerror(errno));
return SR_ERR;
} else
sr_spew("Opened serial port '%s' (fd %d).", serial->port, serial->fd);
}
sr_spew("Opened serial port '%s' (fd %d).", serial->port, serial->fd);
#endif
if (serial->serialcomm)

4
hardware/fluke-dmm/api.c
View File

@ -109,7 +109,7 @@ static GSList *fluke_scan(const char *conn, const char *serialcomm)
if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
return NULL;
if (serial_open(serial, O_RDWR|O_NONBLOCK) != SR_OK)
if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
return NULL;
drvc = di->priv;
@ -230,7 +230,7 @@ static int hw_dev_open(struct sr_dev_inst *sdi)
return SR_ERR_BUG;
}
if (serial_open(devc->serial, O_RDWR|O_NONBLOCK) != SR_OK)
if (serial_open(devc->serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
return SR_ERR;
sdi->status = SR_ST_ACTIVE;

2
hardware/link-mso19/link-mso19.c
View File

@ -560,7 +560,7 @@ static int hw_dev_open(int dev_index)
return ret;
ctx = sdi->priv;
sdi->serial->fd = serial_open(sdi->serial->port, O_RDWR);
sdi->serial->fd = serial_open(sdi->serial->port, SERIAL_RDWR);
if (sdi->serial->fd == -1)
return ret;

8
hardware/openbench-logic-sniffer/ols.c
View File

@ -42,10 +42,6 @@
#include "libsigrok-internal.h"
#include "ols.h"
#ifdef _WIN32
#define O_NONBLOCK FIONBIO
#endif
#define SERIALCOMM "115200/8n1"
static const int hwcaps[] = {
@ -425,7 +421,7 @@ static GSList *hw_scan(GSList *options)
* have a match.
*/
sr_info("ols: probing %s .", conn);
if (serial_open(serial, O_RDWR | O_NONBLOCK) != SR_OK)
if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
return NULL;
ret = SR_OK;
@ -503,7 +499,7 @@ static int hw_dev_open(struct sr_dev_inst *sdi)
devc = sdi->priv;
if (serial_open(devc->serial, O_RDWR) != SR_OK)
if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK)
return SR_ERR;
sdi->status = SR_ST_ACTIVE;

4
hardware/radioshack-dmm/api.c
View File

@ -112,7 +112,7 @@ static GSList *rs_22_812_scan(const char *conn, const char *serialcomm)
if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
return NULL;
if (serial_open(serial, O_RDONLY|O_NONBLOCK) != SR_OK)
if (serial_open(serial, SERIAL_RDONLY | SERIAL_NONBLOCK) != SR_OK)
return NULL;
sr_info("Probing port '%s' readonly.", conn);
@ -217,7 +217,7 @@ static int hw_dev_open(struct sr_dev_inst *sdi)
return SR_ERR_BUG;
}
if (serial_open(devc->serial, O_RDONLY) != SR_OK)
if (serial_open(devc->serial, SERIAL_RDONLY) != SR_OK)
return SR_ERR;
sdi->status = SR_ST_ACTIVE;

4
hardware/tekpower-dmm/api.c
View File

@ -106,7 +106,7 @@ static GSList *lcd14_scan(const char *conn, const char *serialcomm)
if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
return NULL;
if (serial_open(serial, O_RDONLY | O_NONBLOCK) != SR_OK)
if (serial_open(serial, SERIAL_RDONLY | SERIAL_NONBLOCK) != SR_OK)
return NULL;
sr_info("Probing port %s readonly.", conn);
@ -217,7 +217,7 @@ static int hw_dev_open(struct sr_dev_inst *sdi)
return SR_ERR_BUG;
}
if (serial_open(devc->serial, O_RDONLY) != SR_OK)
if (serial_open(devc->serial, SERIAL_RDONLY) != SR_OK)
return SR_ERR;
sdi->status = SR_ST_ACTIVE;

4
hardware/tondaj-sl-814/api.c
View File

@ -140,7 +140,7 @@ static GSList *hw_scan(GSList *options)
if (!(devc->serial = sr_serial_dev_inst_new(conn, serialcomm)))
return NULL;
if (serial_open(devc->serial, O_RDWR|O_NONBLOCK) != SR_OK)
if (serial_open(devc->serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
return NULL;
sdi->priv = devc;
@ -172,7 +172,7 @@ static int hw_dev_open(struct sr_dev_inst *sdi)
devc = sdi->priv;
if (serial_open(devc->serial, O_RDWR|O_NONBLOCK) != SR_OK)
if (serial_open(devc->serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
return SR_ERR;
sdi->status = SR_ST_ACTIVE;

6
libsigrok-internal.h
View File

@ -125,6 +125,12 @@ SR_PRIV int sr_session_send(const struct sr_dev_inst *sdi,
/*--- hardware/common/serial.c ----------------------------------------------*/
enum {
SERIAL_RDWR = 1,
SERIAL_RDONLY = 2,
SERIAL_NONBLOCK = 4,
};
typedef gboolean (*packet_valid_t)(const uint8_t *buf);
SR_PRIV int serial_open(struct sr_serial_dev_inst *serial, int flags);