* Copyright (C) 2010-2012 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2013 Martin Ling <martin-libserialport@earth.li>
* Copyright (C) 2013 Matthias Heidbrink <m-sigrok@heidbrink.biz>
+ * Copyright (C) 2014 Aurelien Jacobs <aurel@gnuage.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include <string.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <stdio.h>
-#include <stdarg.h>
-#ifdef _WIN32
-#include <windows.h>
-#include <tchar.h>
-#include <stdio.h>
-#else
-#include <limits.h>
-#include <termios.h>
-#include <sys/ioctl.h>
-#include <sys/time.h>
-#include <limits.h>
-#endif
-#ifdef __APPLE__
-#include <IOKit/IOKitLib.h>
-#include <IOKit/serial/IOSerialKeys.h>
-#include <IOKit/serial/ioss.h>
-#include <sys/syslimits.h>
-#endif
-#ifdef __linux__
-#include "libudev.h"
-#include "linux/serial.h"
-#include "linux_termios.h"
-
-/* TCGETX/TCSETX is not available everywhere. */
-#if defined(TCGETX) && defined(TCSETX) && defined(HAVE_TERMIOX)
-#define USE_TERMIOX
-#endif
-#endif
-
-/* TIOCINQ/TIOCOUTQ is not available everywhere. */
-#if !defined(TIOCINQ) && defined(FIONREAD)
-#define TIOCINQ FIONREAD
-#endif
-#if !defined(TIOCOUTQ) && defined(FIONWRITE)
-#define TIOCOUTQ FIONWRITE
-#endif
-
-#ifndef _WIN32
-#include "linux_termios.h"
-#endif
-
#include "libserialport.h"
-
-struct sp_port {
- char *name;
-#ifdef _WIN32
- HANDLE hdl;
- COMMTIMEOUTS timeouts;
- OVERLAPPED write_ovl;
- OVERLAPPED read_ovl;
- BYTE pending_byte;
- BOOL writing;
-#else
- int fd;
-#endif
-};
-
-struct sp_port_config {
- int baudrate;
- int bits;
- enum sp_parity parity;
- int stopbits;
- enum sp_rts rts;
- enum sp_cts cts;
- enum sp_dtr dtr;
- enum sp_dsr dsr;
- enum sp_xonxoff xon_xoff;
-};
-
-struct port_data {
-#ifdef _WIN32
- DCB dcb;
-#else
- struct termios term;
- int controlbits;
- int termiox_supported;
- int flow;
-#endif
-};
-
-/* Standard baud rates. */
-#ifdef _WIN32
-#define BAUD_TYPE DWORD
-#define BAUD(n) {CBR_##n, n}
-#else
-#define BAUD_TYPE speed_t
-#define BAUD(n) {B##n, n}
-#endif
-
-struct std_baudrate {
- BAUD_TYPE index;
- int value;
-};
+#include "libserialport_internal.h"
const struct std_baudrate std_baudrates[] = {
#ifdef _WIN32
void (*sp_debug_handler)(const char *format, ...) = sp_default_debug_handler;
-#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
-#define NUM_STD_BAUDRATES ARRAY_SIZE(std_baudrates)
-
-/* Debug output macros. */
-#define DEBUG(fmt, ...) do { if (sp_debug_handler) sp_debug_handler(fmt ".\n", ##__VA_ARGS__); } while (0)
-#define DEBUG_ERROR(err, msg) DEBUG("%s returning " #err ": " msg, __func__)
-#define DEBUG_FAIL(msg) do { \
- char *errmsg = sp_last_error_message(); \
- DEBUG("%s returning SP_ERR_FAIL: " msg ": %s", __func__, errmsg); \
- sp_free_error_message(errmsg); \
-} while (0);
-#define RETURN() do { DEBUG("%s returning", __func__); return; } while(0)
-#define RETURN_CODE(x) do { DEBUG("%s returning " #x, __func__); return x; } while (0)
-#define RETURN_CODEVAL(x) do { \
- switch (x) { \
- case SP_OK: RETURN_CODE(SP_OK); \
- case SP_ERR_ARG: RETURN_CODE(SP_ERR_ARG); \
- case SP_ERR_FAIL: RETURN_CODE(SP_ERR_FAIL); \
- case SP_ERR_MEM: RETURN_CODE(SP_ERR_MEM); \
- case SP_ERR_SUPP: RETURN_CODE(SP_ERR_SUPP); \
- } \
-} while (0)
-#define RETURN_OK() RETURN_CODE(SP_OK);
-#define RETURN_ERROR(err, msg) do { DEBUG_ERROR(err, msg); return err; } while (0)
-#define RETURN_FAIL(msg) do { DEBUG_FAIL(msg); return SP_ERR_FAIL; } while (0)
-#define RETURN_VALUE(fmt, x) do { DEBUG("%s returning " fmt, __func__, x); return x; } while (0)
-#define SET_ERROR(val, err, msg) do { DEBUG_ERROR(err, msg); val = err; } while (0)
-#define SET_FAIL(val, msg) do { DEBUG_FAIL(msg); val = SP_ERR_FAIL; } while (0)
-#define TRACE(fmt, ...) DEBUG("%s(" fmt ") called", __func__, ##__VA_ARGS__)
-
-#define TRY(x) do { int ret = x; if (ret != SP_OK) RETURN_CODEVAL(ret); } while (0)
-
-/* Helper functions. */
-static struct sp_port **list_append(struct sp_port **list, const char *portname);
static enum sp_return get_config(struct sp_port *port, struct port_data *data,
struct sp_port_config *config);
+
static enum sp_return set_config(struct sp_port *port, struct port_data *data,
const struct sp_port_config *config);
enum sp_return sp_get_port_by_name(const char *portname, struct sp_port **port_ptr)
{
struct sp_port *port;
+ enum sp_return ret;
int len;
TRACE("%s, %p", portname, port_ptr);
port->fd = -1;
#endif
+ port->description = NULL;
+ port->transport = SP_TRANSPORT_NATIVE;
+ port->usb_bus = -1;
+ port->usb_address = -1;
+ port->usb_vid = -1;
+ port->usb_pid = -1;
+ port->usb_manufacturer = NULL;
+ port->usb_product = NULL;
+ port->usb_serial = NULL;
+ port->bluetooth_address = NULL;
+
+ if ((ret = get_port_details(port)) != SP_OK) {
+ sp_free_port(port);
+ return ret;
+ }
+
*port_ptr = port;
RETURN_OK();
RETURN_VALUE("%s", port->name);
}
+char *sp_get_port_description(struct sp_port *port)
+{
+ TRACE("%p", port);
+
+ if (!port || !port->description)
+ return NULL;
+
+ RETURN_VALUE("%s", port->description);
+}
+
+enum sp_transport sp_get_port_transport(struct sp_port *port)
+{
+ TRACE("%p", port);
+
+ if (!port)
+ RETURN_ERROR(SP_ERR_ARG, "Null port");
+
+ RETURN_VALUE("%d", port->transport);
+}
+
+enum sp_return sp_get_port_usb_bus_address(const struct sp_port *port,
+ int *usb_bus, int *usb_address)
+{
+ TRACE("%p", port);
+
+ if (!port)
+ RETURN_ERROR(SP_ERR_ARG, "Null port");
+ if (port->transport != SP_TRANSPORT_USB)
+ RETURN_ERROR(SP_ERR_ARG, "Port does not use USB transport");
+ if (port->usb_bus < 0 || port->usb_address < 0)
+ RETURN_ERROR(SP_ERR_SUPP, "Bus and address values are not available");
+
+ if (usb_bus) *usb_bus = port->usb_bus;
+ if (usb_address) *usb_address = port->usb_address;
+
+ RETURN_OK();
+}
+
+enum sp_return sp_get_port_usb_vid_pid(const struct sp_port *port,
+ int *usb_vid, int *usb_pid)
+{
+ TRACE("%p", port);
+
+ if (!port)
+ RETURN_ERROR(SP_ERR_ARG, "Null port");
+ if (port->transport != SP_TRANSPORT_USB)
+ RETURN_ERROR(SP_ERR_ARG, "Port does not use USB transport");
+ if (port->usb_vid < 0 || port->usb_pid < 0)
+ RETURN_ERROR(SP_ERR_SUPP, "VID:PID values are not available");
+
+ if (usb_vid) *usb_vid = port->usb_vid;
+ if (usb_pid) *usb_pid = port->usb_pid;
+
+ RETURN_OK();
+}
+
+char *sp_get_port_usb_manufacturer(const struct sp_port *port)
+{
+ TRACE("%p", port);
+
+ if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_manufacturer)
+ return NULL;
+
+ RETURN_VALUE("%s", port->usb_manufacturer);
+}
+
+char *sp_get_port_usb_product(const struct sp_port *port)
+{
+ TRACE("%p", port);
+
+ if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_product)
+ return NULL;
+
+ RETURN_VALUE("%s", port->usb_product);
+}
+
+char *sp_get_port_usb_serial(const struct sp_port *port)
+{
+ TRACE("%p", port);
+
+ if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_serial)
+ return NULL;
+
+ RETURN_VALUE("%s", port->usb_serial);
+}
+
+char *sp_get_port_bluetooth_address(const struct sp_port *port)
+{
+ TRACE("%p", port);
+
+ if (!port || port->transport != SP_TRANSPORT_BLUETOOTH
+ || !port->bluetooth_address)
+ return NULL;
+
+ RETURN_VALUE("%s", port->bluetooth_address);
+}
+
enum sp_return sp_get_port_handle(const struct sp_port *port, void *result_ptr)
{
TRACE("%p, %p", port, result_ptr);
if (port->name)
free(port->name);
+ if (port->description)
+ free(port->description);
+ if (port->usb_manufacturer)
+ free(port->usb_manufacturer);
+ if (port->usb_product)
+ free(port->usb_product);
+ if (port->usb_serial)
+ free(port->usb_serial);
+ if (port->bluetooth_address)
+ free(port->bluetooth_address);
+#ifdef _WIN32
+ if (port->usb_path)
+ free(port->usb_path);
+#endif
free(port);
data_len = data_size / sizeof(TCHAR);
data[data_len] = '\0';
#ifdef UNICODE
- name_len = WideCharToMultiByte(CP_ACP, 0, data, -1, NULL, 0, NULL, NULL)
+ name_len = WideCharToMultiByte(CP_ACP, 0, data, -1, NULL, 0, NULL, NULL);
#else
name_len = data_len + 1;
#endif
out_done:
#endif
#ifdef __APPLE__
- mach_port_t master;
CFMutableDictionaryRef classes;
io_iterator_t iter;
- char *path;
+ char path[PATH_MAX];
io_object_t port;
CFTypeRef cf_path;
Boolean result;
ret = SP_OK;
- DEBUG("Getting IOKit master port");
- if (IOMasterPort(MACH_PORT_NULL, &master) != KERN_SUCCESS) {
- SET_FAIL(ret, "IOMasterPort() failed");
- goto out_done;
- }
-
DEBUG("Creating matching dictionary");
if (!(classes = IOServiceMatching(kIOSerialBSDServiceValue))) {
SET_FAIL(ret, "IOServiceMatching() failed");
goto out_done;
}
- CFDictionarySetValue(classes,
- CFSTR(kIOSerialBSDTypeKey), CFSTR(kIOSerialBSDAllTypes));
-
DEBUG("Getting matching services");
- if (IOServiceGetMatchingServices(master, classes, &iter) != KERN_SUCCESS) {
+ if (IOServiceGetMatchingServices(kIOMasterPortDefault, classes,
+ &iter) != KERN_SUCCESS) {
SET_FAIL(ret, "IOServiceGetMatchingServices() failed");
goto out_done;
}
- if (!(path = malloc(PATH_MAX))) {
- SET_ERROR(ret, SP_ERR_MEM, "device path malloc failed");
- goto out_release;
- }
-
DEBUG("Iterating over results");
while ((port = IOIteratorNext(iter))) {
cf_path = IORegistryEntryCreateCFProperty(port,
CFSTR(kIOCalloutDeviceKey), kCFAllocatorDefault, 0);
if (cf_path) {
- result = CFStringGetCString(cf_path,
- path, PATH_MAX, kCFStringEncodingASCII);
+ result = CFStringGetCString(cf_path, path, sizeof(path),
+ kCFStringEncodingASCII);
CFRelease(cf_path);
if (result) {
DEBUG("Found port %s", path);
IOObjectRelease(port);
}
out:
- free(path);
-out_release:
IOObjectRelease(iter);
out_done:
#endif
#ifdef __linux__
- struct udev *ud;
- struct udev_enumerate *ud_enumerate;
- struct udev_list_entry *ud_list;
- struct udev_list_entry *ud_entry;
- const char *path;
- struct udev_device *ud_dev, *ud_parent;
- const char *name;
- const char *driver;
- int fd, ioctl_result;
+ char name[PATH_MAX], target[PATH_MAX];
+ struct dirent entry, *result;
struct serial_struct serial_info;
+ int len, fd, ioctl_result;
+ DIR *dir;
ret = SP_OK;
DEBUG("Enumerating tty devices");
- ud = udev_new();
- ud_enumerate = udev_enumerate_new(ud);
- udev_enumerate_add_match_subsystem(ud_enumerate, "tty");
- udev_enumerate_scan_devices(ud_enumerate);
- ud_list = udev_enumerate_get_list_entry(ud_enumerate);
+ if (!(dir = opendir("/sys/class/tty")))
+ RETURN_FAIL("could not open /sys/class/tty");
+
DEBUG("Iterating over results");
- udev_list_entry_foreach(ud_entry, ud_list) {
- path = udev_list_entry_get_name(ud_entry);
- DEBUG("Found device %s", path);
- ud_dev = udev_device_new_from_syspath(ud, path);
- /* If there is no parent device, this is a virtual tty. */
- ud_parent = udev_device_get_parent(ud_dev);
- if (ud_parent == NULL) {
- DEBUG("No parent device, assuming virtual tty");
- udev_device_unref(ud_dev);
+ while (!readdir_r(dir, &entry, &result) && result) {
+ len = readlinkat(dirfd(dir), entry.d_name, target, sizeof(target));
+ if (len <= 0 || len >= (int) sizeof(target)-1)
continue;
- }
- name = udev_device_get_devnode(ud_dev);
- /* The serial8250 driver has a hardcoded number of ports.
- * The only way to tell which actually exist on a given system
- * is to try to open them and make an ioctl call. */
- driver = udev_device_get_driver(ud_parent);
- if (driver && !strcmp(driver, "serial8250")) {
+ target[len] = 0;
+ if (strstr(target, "virtual"))
+ continue;
+ snprintf(name, sizeof(name), "/dev/%s", entry.d_name);
+ DEBUG("Found device %s", name);
+ if (strstr(target, "serial8250")) {
+ /* The serial8250 driver has a hardcoded number of ports.
+ * The only way to tell which actually exist on a given system
+ * is to try to open them and make an ioctl call. */
DEBUG("serial8250 device, attempting to open");
if ((fd = open(name, O_RDWR | O_NONBLOCK | O_NOCTTY)) < 0) {
DEBUG("open failed, skipping");
- goto skip;
+ continue;
}
ioctl_result = ioctl(fd, TIOCGSERIAL, &serial_info);
close(fd);
if (ioctl_result != 0) {
DEBUG("ioctl failed, skipping");
- goto skip;
+ continue;
}
if (serial_info.type == PORT_UNKNOWN) {
DEBUG("port type is unknown, skipping");
- goto skip;
+ continue;
}
}
DEBUG("Found port %s", name);
list = list_append(list, name);
-skip:
- udev_device_unref(ud_dev);
if (!list) {
SET_ERROR(ret, SP_ERR_MEM, "list append failed");
- goto out;
+ break;
}
}
-out:
- udev_enumerate_unref(ud_enumerate);
- udev_unref(ud);
+ closedir(dir);
#endif
switch (ret) {
*list_ptr = list;
RETURN_OK();
case SP_ERR_SUPP:
- DEBUG_ERROR(SP_ERR_SUPP, "Enumeration not supported on this platform.");
+ DEBUG_ERROR(SP_ERR_SUPP, "Enumeration not supported on this platform");
default:
if (list)
sp_free_port_list(list);
DEBUG("Opening port %s", port->name);
#ifdef _WIN32
- DWORD desired_access = 0, flags_and_attributes = 0;
+ DWORD desired_access = 0, flags_and_attributes = 0, errors;
char *escaped_port_name;
+ COMSTAT status;
/* Prefix port name with '\\.\' to work with ports above COM9. */
- if (!(escaped_port_name = malloc(strlen(port->name + 5))))
+ if (!(escaped_port_name = malloc(strlen(port->name) + 5)))
RETURN_ERROR(SP_ERR_MEM, "Escaped port name malloc failed");
sprintf(escaped_port_name, "\\\\.\\%s", port->name);
}
/* Prepare OVERLAPPED structures. */
- memset(&port->read_ovl, 0, sizeof(port->read_ovl));
- memset(&port->write_ovl, 0, sizeof(port->write_ovl));
- port->read_ovl.hEvent = INVALID_HANDLE_VALUE;
- port->write_ovl.hEvent = INVALID_HANDLE_VALUE;
- if ((port->read_ovl.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL)) == INVALID_HANDLE_VALUE) {
+#define INIT_OVERLAPPED(ovl) do { \
+ memset(&port->ovl, 0, sizeof(port->ovl)); \
+ port->ovl.hEvent = INVALID_HANDLE_VALUE; \
+ if ((port->ovl.hEvent = CreateEvent(NULL, TRUE, TRUE, NULL)) \
+ == INVALID_HANDLE_VALUE) { \
+ sp_close(port); \
+ RETURN_FAIL(#ovl "CreateEvent() failed"); \
+ } \
+} while (0)
+
+ INIT_OVERLAPPED(read_ovl);
+ INIT_OVERLAPPED(write_ovl);
+ INIT_OVERLAPPED(wait_ovl);
+
+ /* Set event mask for RX and error events. */
+ if (SetCommMask(port->hdl, EV_RXCHAR | EV_ERR) == 0) {
sp_close(port);
- RETURN_FAIL("read event CreateEvent() failed");
+ RETURN_FAIL("SetCommMask() failed");
}
- if ((port->write_ovl.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL)) == INVALID_HANDLE_VALUE) {
- sp_close(port);
- RETURN_FAIL("write event CreateEvent() failed");
+
+ /* Start background operation for RX and error events. */
+ if (WaitCommEvent(port->hdl, &port->events, &port->wait_ovl) == 0) {
+ if (GetLastError() != ERROR_IO_PENDING) {
+ sp_close(port);
+ RETURN_FAIL("WaitCommEvent() failed");
+ }
}
port->writing = FALSE;
data.term.c_cflag |= (CLOCAL | CREAD | HUPCL);
#endif
+#ifdef _WIN32
+ if (ClearCommError(port->hdl, &errors, &status) == 0)
+ RETURN_FAIL("ClearCommError() failed");
+#endif
+
ret = set_config(port, &data, &config);
if (ret < 0) {
if (CloseHandle(port->hdl) == 0)
RETURN_FAIL("port CloseHandle() failed");
port->hdl = INVALID_HANDLE_VALUE;
- /* Close event handle created for overlapped reads. */
- if (port->read_ovl.hEvent != INVALID_HANDLE_VALUE && CloseHandle(port->read_ovl.hEvent) == 0)
- RETURN_FAIL("read event CloseHandle() failed");
- /* Close event handle created for overlapped writes. */
- if (port->write_ovl.hEvent != INVALID_HANDLE_VALUE && CloseHandle(port->write_ovl.hEvent) == 0)
- RETURN_FAIL("write event CloseHandle() failed");
+
+ /* Close event handles for overlapped structures. */
+#define CLOSE_OVERLAPPED(ovl) do { \
+ if (port->ovl.hEvent != INVALID_HANDLE_VALUE && \
+ CloseHandle(port->ovl.hEvent) == 0) \
+ RETURN_FAIL(# ovl "event CloseHandle() failed"); \
+} while (0)
+ CLOSE_OVERLAPPED(read_ovl);
+ CLOSE_OVERLAPPED(write_ovl);
+ CLOSE_OVERLAPPED(wait_ovl);
+
#else
/* Returns 0 upon success, -1 upon failure. */
if (close(port->fd) == -1)
#else
int result;
while (1) {
+#ifdef __ANDROID__
+ int arg = 1;
+ result = ioctl(port->fd, TCSBRK, &arg);
+#else
result = tcdrain(port->fd);
+#endif
if (result < 0) {
if (errno == EINTR) {
DEBUG("tcdrain() was interrupted");
/* Start asynchronous write. */
if (WriteFile(port->hdl, &port->pending_byte, 1, NULL, &port->write_ovl) == 0) {
if (GetLastError() == ERROR_IO_PENDING) {
- DEBUG("Asynchronous write started");
- port->writing = 1;
- RETURN_VALUE("%d", ++written);
+ if (HasOverlappedIoCompleted(&port->write_ovl)) {
+ DEBUG("Asynchronous write completed immediately");
+ port->writing = 0;
+ written++;
+ continue;
+ } else {
+ DEBUG("Asynchronous write running");
+ port->writing = 1;
+ RETURN_VALUE("%d", ++written);
+ }
} else {
/* Actual failure of some kind. */
RETURN_FAIL("WriteFile() failed");
}
} else {
- DEBUG("Single byte written immediately.");
+ DEBUG("Single byte written immediately");
written++;
}
}
- DEBUG("All bytes written immediately.");
+ DEBUG("All bytes written immediately");
RETURN_VALUE("%d", written);
#else
DEBUG("Waiting for read to complete");
GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE);
DEBUG("Read completed, %d/%d bytes read", bytes_read, count);
- RETURN_VALUE("%d", bytes_read);
} else {
RETURN_FAIL("ReadFile() failed");
}
} else {
DEBUG("Read completed immediately");
- RETURN_VALUE("%d", count);
+ bytes_read = count;
}
+
+ /* Start background operation for subsequent events. */
+ if (WaitCommEvent(port->hdl, &port->events, &port->wait_ovl) == 0) {
+ if (GetLastError() != ERROR_IO_PENDING)
+ RETURN_FAIL("WaitCommEvent() failed");
+ }
+
+ RETURN_VALUE("%d", bytes_read);
+
#else
size_t bytes_read = 0;
unsigned char *ptr = (unsigned char *) buf;
RETURN_FAIL("ReadFile() failed");
/* Get number of bytes read. */
- GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE);
+ if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 0)
+ RETURN_FAIL("GetOverlappedResult() failed");
+
+ if (bytes_read > 0) {
+ /* Start background operation for subsequent events. */
+ if (WaitCommEvent(port->hdl, &port->events, &port->wait_ovl) == 0) {
+ if (GetLastError() != ERROR_IO_PENDING)
+ RETURN_FAIL("WaitCommEvent() failed");
+ }
+ }
RETURN_VALUE("%d", bytes_read);
#else
COMSTAT comstat;
if (ClearCommError(port->hdl, &errors, &comstat) == 0)
- RETURN_FAIL("ClearComError() failed");
+ RETURN_FAIL("ClearCommError() failed");
RETURN_VALUE("%d", comstat.cbInQue);
#else
int bytes_waiting;
COMSTAT comstat;
if (ClearCommError(port->hdl, &errors, &comstat) == 0)
- RETURN_FAIL("ClearComError() failed");
+ RETURN_FAIL("ClearCommError() failed");
RETURN_VALUE("%d", comstat.cbOutQue);
#else
int bytes_waiting;
#endif
}
-#ifdef __linux__
+enum sp_return sp_new_event_set(struct sp_event_set **result_ptr)
+{
+ struct sp_event_set *result;
+
+ TRACE("%p", result_ptr);
+
+ if (!result_ptr)
+ RETURN_ERROR(SP_ERR_ARG, "Null result");
+
+ *result_ptr = NULL;
+
+ if (!(result = malloc(sizeof(struct sp_event_set))))
+ RETURN_ERROR(SP_ERR_MEM, "sp_event_set malloc() failed");
+
+ memset(result, 0, sizeof(struct sp_event_set));
+
+ *result_ptr = result;
+
+ RETURN_OK();
+}
+
+static enum sp_return add_handle(struct sp_event_set *event_set,
+ event_handle handle, enum sp_event mask)
+{
+ void *new_handles;
+ enum sp_event *new_masks;
+
+ TRACE("%p, %d, %d", event_set, handle, mask);
+
+ if (!(new_handles = realloc(event_set->handles,
+ sizeof(event_handle) * (event_set->count + 1))))
+ RETURN_ERROR(SP_ERR_MEM, "handle array realloc() failed");
+
+ if (!(new_masks = realloc(event_set->masks,
+ sizeof(enum sp_event) * (event_set->count + 1))))
+ RETURN_ERROR(SP_ERR_MEM, "mask array realloc() failed");
+
+ event_set->handles = new_handles;
+ event_set->masks = new_masks;
+
+ ((event_handle *) event_set->handles)[event_set->count] = handle;
+ event_set->masks[event_set->count] = mask;
+
+ event_set->count++;
+
+ RETURN_OK();
+}
+
+enum sp_return sp_add_port_events(struct sp_event_set *event_set,
+ const struct sp_port *port, enum sp_event mask)
+{
+ TRACE("%p, %p, %d", event_set, port, mask);
+
+ if (!event_set)
+ RETURN_ERROR(SP_ERR_ARG, "Null event set");
+
+ if (!port)
+ RETURN_ERROR(SP_ERR_ARG, "Null port");
+
+ if (mask > (SP_EVENT_RX_READY | SP_EVENT_TX_READY | SP_EVENT_ERROR))
+ RETURN_ERROR(SP_ERR_ARG, "Invalid event mask");
+
+ if (!mask)
+ RETURN_OK();
+
+#ifdef _WIN32
+ enum sp_event handle_mask;
+ if ((handle_mask = mask & SP_EVENT_TX_READY))
+ TRY(add_handle(event_set, port->write_ovl.hEvent, handle_mask));
+ if ((handle_mask = mask & (SP_EVENT_RX_READY | SP_EVENT_ERROR)))
+ TRY(add_handle(event_set, port->wait_ovl.hEvent, handle_mask));
+#else
+ TRY(add_handle(event_set, port->fd, mask));
+#endif
+
+ RETURN_OK();
+}
+
+void sp_free_event_set(struct sp_event_set *event_set)
+{
+ TRACE("%p", event_set);
+
+ if (!event_set) {
+ DEBUG("Null event set");
+ RETURN();
+ }
+
+ DEBUG("Freeing event set");
+
+ if (event_set->handles)
+ free(event_set->handles);
+ if (event_set->masks)
+ free(event_set->masks);
+
+ free(event_set);
+
+ RETURN();
+}
+
+enum sp_return sp_wait(struct sp_event_set *event_set, unsigned int timeout)
+{
+ TRACE("%p, %d", event_set, timeout);
+
+ if (!event_set)
+ RETURN_ERROR(SP_ERR_ARG, "Null event set");
+
+#ifdef _WIN32
+ if (WaitForMultipleObjects(event_set->count, event_set->handles, FALSE,
+ timeout ? timeout : INFINITE) == WAIT_FAILED)
+ RETURN_FAIL("WaitForMultipleObjects() failed");
+
+ RETURN_OK();
+#else
+ struct timeval start, delta, now, end = {0, 0};
+ int result, timeout_remaining;
+ struct pollfd *pollfds;
+ unsigned int i;
+
+ if (!(pollfds = malloc(sizeof(struct pollfd) * event_set->count)))
+ RETURN_ERROR(SP_ERR_MEM, "pollfds malloc() failed");
+
+ for (i = 0; i < event_set->count; i++) {
+ pollfds[i].fd = ((int *) event_set->handles)[i];
+ pollfds[i].events = 0;
+ pollfds[i].revents = 0;
+ if (event_set->masks[i] & SP_EVENT_RX_READY)
+ pollfds[i].events |= POLLIN;
+ if (event_set->masks[i] & SP_EVENT_TX_READY)
+ pollfds[i].events |= POLLOUT;
+ if (event_set->masks[i] & SP_EVENT_ERROR)
+ pollfds[i].events |= POLLERR;
+ }
+
+ if (timeout) {
+ /* Get time at start of operation. */
+ gettimeofday(&start, NULL);
+ /* Define duration of timeout. */
+ delta.tv_sec = timeout / 1000;
+ delta.tv_usec = (timeout % 1000) * 1000;
+ /* Calculate time at which we should give up. */
+ timeradd(&start, &delta, &end);
+ }
+
+ /* Loop until an event occurs. */
+ while (1)
+ {
+ if (timeout) {
+ gettimeofday(&now, NULL);
+ if (timercmp(&now, &end, >)) {
+ DEBUG("wait timed out");
+ break;
+ }
+ timersub(&end, &now, &delta);
+ timeout_remaining = delta.tv_sec * 1000 + delta.tv_usec / 1000;
+ }
+
+ result = poll(pollfds, event_set->count, timeout ? timeout_remaining : -1);
+
+ if (result < 0) {
+ if (errno == EINTR) {
+ DEBUG("poll() call was interrupted, repeating");
+ continue;
+ } else {
+ free(pollfds);
+ RETURN_FAIL("poll() failed");
+ }
+ } else if (result == 0) {
+ DEBUG("poll() timed out");
+ break;
+ } else {
+ DEBUG("poll() completed");
+ break;
+ }
+ }
+
+ free(pollfds);
+ RETURN_OK();
+#endif
+}
+
+#ifdef USE_TERMIOS_SPEED
static enum sp_return get_baudrate(int fd, int *baudrate)
{
void *data;
RETURN_OK();
}
+#endif /* USE_TERMIOS_SPEED */
#ifdef USE_TERMIOX
-static enum sp_return get_flow(int fd, int *flow)
+static enum sp_return get_flow(int fd, struct port_data *data)
{
- void *data;
+ void *termx;
- TRACE("%d, %p", fd, flow);
+ TRACE("%d, %p", fd, data);
DEBUG("Getting advanced flow control");
- if (!(data = malloc(get_termiox_size())))
+ if (!(termx = malloc(get_termiox_size())))
RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
- if (ioctl(fd, TCGETX, data) < 0) {
- free(data);
+ if (ioctl(fd, TCGETX, termx) < 0) {
+ free(termx);
RETURN_FAIL("getting termiox failed");
}
- *flow = get_termiox_flow(data);
+ get_termiox_flow(termx, &data->rts_flow, &data->cts_flow,
+ &data->dtr_flow, &data->dsr_flow);
- free(data);
+ free(termx);
RETURN_OK();
}
-static enum sp_return set_flow(int fd, int flow)
+static enum sp_return set_flow(int fd, struct port_data *data)
{
- void *data;
+ void *termx;
- TRACE("%d, %d", fd, flow);
+ TRACE("%d, %p", fd, data);
DEBUG("Getting advanced flow control");
- if (!(data = malloc(get_termiox_size())))
+ if (!(termx = malloc(get_termiox_size())))
RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
- if (ioctl(fd, TCGETX, data) < 0) {
- free(data);
+ if (ioctl(fd, TCGETX, termx) < 0) {
+ free(termx);
RETURN_FAIL("getting termiox failed");
}
DEBUG("Setting advanced flow control");
- set_termiox_flow(data, flow);
+ set_termiox_flow(termx, data->rts_flow, data->cts_flow,
+ data->dtr_flow, data->dsr_flow);
- if (ioctl(fd, TCSETX, data) < 0) {
- free(data);
+ if (ioctl(fd, TCSETX, termx) < 0) {
+ free(termx);
RETURN_FAIL("setting termiox failed");
}
- free(data);
+ free(termx);
RETURN_OK();
}
#endif /* USE_TERMIOX */
-#endif /* __linux__ */
static enum sp_return get_config(struct sp_port *port, struct port_data *data,
struct sp_port_config *config)
RETURN_FAIL("TIOCMGET ioctl failed");
#ifdef USE_TERMIOX
- int ret = get_flow(port->fd, &data->flow);
+ int ret = get_flow(port->fd, data);
if (ret == SP_ERR_FAIL && errno == EINVAL)
data->termiox_supported = 0;
if (i == NUM_STD_BAUDRATES) {
#ifdef __APPLE__
config->baudrate = (int)data->term.c_ispeed;
-#elif defined(__linux__)
+#elif defined(USE_TERMIOS_SPEED)
TRY(get_baudrate(port->fd, &config->baudrate));
#else
config->baudrate = -1;
config->rts = SP_RTS_FLOW_CONTROL;
config->cts = SP_CTS_FLOW_CONTROL;
} else {
- if (data->termiox_supported && data->flow & RTS_FLOW)
+ if (data->termiox_supported && data->rts_flow)
config->rts = SP_RTS_FLOW_CONTROL;
else
config->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF;
- config->cts = (data->termiox_supported && data->flow & CTS_FLOW) ?
+ config->cts = (data->termiox_supported && data->cts_flow) ?
SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
}
- if (data->termiox_supported && data->flow & DTR_FLOW)
+ if (data->termiox_supported && data->dtr_flow)
config->dtr = SP_DTR_FLOW_CONTROL;
else
config->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF;
- config->dsr = (data->termiox_supported && data->flow & DSR_FLOW) ?
+ config->dsr = (data->termiox_supported && data->dsr_flow) ?
SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
if (data->term.c_iflag & IXOFF) {
baud_nonstd = B0;
#endif
-#ifdef __linux__
+#ifdef USE_TERMIOS_SPEED
int baud_nonstd = 0;
#endif
if (config->parity >= 0) {
switch (config->parity) {
- /* Note: There's also SPACEPARITY, MARKPARITY (unneeded so far). */
case SP_PARITY_NONE:
data->dcb.Parity = NOPARITY;
break;
if (cfsetspeed(&data->term, B9600) < 0)
RETURN_FAIL("cfsetspeed() failed");
baud_nonstd = config->baudrate;
-#elif defined(__linux__)
+#elif defined(USE_TERMIOS_SPEED)
baud_nonstd = 1;
#else
RETURN_ERROR(SP_ERR_SUPP, "Non-standard baudrate not supported");
if (config->rts >= 0 || config->cts >= 0) {
if (data->termiox_supported) {
- data->flow &= ~(RTS_FLOW | CTS_FLOW);
+ data->rts_flow = data->cts_flow = 0;
switch (config->rts) {
case SP_RTS_OFF:
case SP_RTS_ON:
RETURN_FAIL("Setting RTS signal level failed");
break;
case SP_RTS_FLOW_CONTROL:
- data->flow |= RTS_FLOW;
+ data->rts_flow = 1;
break;
default:
break;
}
if (config->cts == SP_CTS_FLOW_CONTROL)
- data->flow |= CTS_FLOW;
+ data->cts_flow = 1;
- if (data->flow & (RTS_FLOW | CTS_FLOW))
+ if (data->rts_flow && data->cts_flow)
data->term.c_iflag |= CRTSCTS;
else
data->term.c_iflag &= ~CRTSCTS;
if (config->dtr >= 0 || config->dsr >= 0) {
if (data->termiox_supported) {
- data->flow &= ~(DTR_FLOW | DSR_FLOW);
+ data->dtr_flow = data->dsr_flow = 0;
switch (config->dtr) {
case SP_DTR_OFF:
case SP_DTR_ON:
RETURN_FAIL("Setting DTR signal level failed");
break;
case SP_DTR_FLOW_CONTROL:
- data->flow |= DTR_FLOW;
+ data->dtr_flow = 1;
break;
default:
break;
}
if (config->dsr == SP_DSR_FLOW_CONTROL)
- data->flow |= DSR_FLOW;
+ data->dsr_flow = 1;
} else {
/* DTR/DSR flow control not supported. */
if (config->dtr == SP_DTR_FLOW_CONTROL || config->dsr == SP_DSR_FLOW_CONTROL)
RETURN_FAIL("cfsetspeed() failed");
}
#elif defined(__linux__)
+#ifdef USE_TERMIOS_SPEED
if (baud_nonstd)
TRY(set_baudrate(port->fd, config->baudrate));
+#endif
#ifdef USE_TERMIOX
if (data->termiox_supported)
- TRY(set_flow(port->fd, data->flow));
+ TRY(set_flow(port->fd, data));
#endif
#endif
}
va_end(args);
}
+
+int sp_get_major_package_version(void)
+{
+ return SP_PACKAGE_VERSION_MAJOR;
+}
+
+int sp_get_minor_package_version(void)
+{
+ return SP_PACKAGE_VERSION_MINOR;
+}
+
+int sp_get_micro_package_version(void)
+{
+ return SP_PACKAGE_VERSION_MICRO;
+}
+
+const char *sp_get_package_version_string(void)
+{
+ return SP_PACKAGE_VERSION_STRING;
+}
+
+int sp_get_current_lib_version(void)
+{
+ return SP_LIB_VERSION_CURRENT;
+}
+
+int sp_get_revision_lib_version(void)
+{
+ return SP_LIB_VERSION_REVISION;
+}
+
+int sp_get_age_lib_version(void)
+{
+ return SP_LIB_VERSION_AGE;
+}
+
+const char *sp_get_lib_version_string(void)
+{
+ return SP_LIB_VERSION_STRING;
+}
+
+/** @} */
projects / libserialport.git / blobdiff