#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
#ifdef _WIN32
#include <windows.h>
+#include <tchar.h>
#else
#include <termios.h>
#include <sys/ioctl.h>
#endif
-#include <stdlib.h>
-#include <errno.h>
+#ifdef __APPLE__
+#include <IOKit/IOKitLib.h>
+#include <IOKit/serial/IOSerialKeys.h>
+#include <sys/syslimits.h>
+#endif
+#ifdef __linux__
+#include "libudev.h"
+#include "linux/serial.h"
+#endif
#include "serialport.h"
+static char **sp_list_append(char **list, void *data, size_t len)
+{
+ void *tmp;
+ unsigned int count;
+ for (count = 0; list[count]; count++);
+ if (!(tmp = realloc(list, sizeof(char *) * (count + 2))))
+ goto fail;
+ list = tmp;
+ if (!(list[count] = malloc(len)))
+ goto fail;
+ memcpy(list[count], data, len);
+ list[count + 1] = NULL;
+ return list;
+fail:
+ sp_free_port_list(list);
+ return NULL;
+}
+
+/**
+ * List the serial ports available on the system.
+ *
+ * @return A null-terminated array of port name strings.
+ */
+char **sp_list_ports(void)
+{
+ char **list;
+
+ if (!(list = malloc(sizeof(char *))))
+ return NULL;
+
+ list[0] = NULL;
+
+#ifdef _WIN32
+ HKEY key;
+ TCHAR *value, *data;
+ DWORD max_value_len, max_data_size, max_data_len;
+ DWORD value_len, data_size, data_len;
+ DWORD type, index = 0;
+
+ if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("HARDWARE\\DEVICEMAP\\SERIALCOMM"),
+ 0, KEY_QUERY_VALUE, &key) != ERROR_SUCCESS)
+ return NULL;
+ if (RegQueryInfoKey(key, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+ &max_value_len, &max_data_size, NULL, NULL) != ERROR_SUCCESS)
+ goto out_close;
+ max_data_len = max_data_size / sizeof(TCHAR);
+ if (!(value = malloc((max_value_len + 1) * sizeof(TCHAR))))
+ goto out_close;
+ if (!(data = malloc((max_data_len + 1) * sizeof(TCHAR))))
+ goto out_free_value;
+ while (
+ value_len = max_value_len,
+ data_size = max_data_size,
+ RegEnumValue(key, index, value, &value_len,
+ NULL, &type, (LPBYTE)data, &data_size) == ERROR_SUCCESS)
+ {
+ data_len = data_size / sizeof(TCHAR);
+ data[data_len] = '\0';
+ if (type == REG_SZ)
+ if (!(list = sp_list_append(list,
+ data, (data_len + 1) * sizeof(TCHAR))))
+ goto out;
+ index++;
+ }
+out:
+ free(data);
+out_free_value:
+ free(value);
+out_close:
+ RegCloseKey(key);
+ return list;
+#endif
+#ifdef __APPLE__
+ mach_port_t master;
+ CFMutableDictionaryRef classes;
+ io_iterator_t iter;
+ char *path;
+ io_object_t port;
+ CFTypeRef cf_path;
+ Boolean result;
+
+ if (IOMasterPort(MACH_PORT_NULL, &master) != KERN_SUCCESS)
+ return NULL;
+
+ if (!(classes = IOServiceMatching(kIOSerialBSDServiceValue)))
+ return NULL;
+
+ CFDictionarySetValue(classes,
+ CFSTR(kIOSerialBSDTypeKey), CFSTR(kIOSerialBSDAllTypes));
+
+ if (!(IOServiceGetMatchingServices(master, classes, &iter)))
+ return NULL;
+
+ if (!(path = malloc(PATH_MAX)))
+ goto out_release;
+
+ while ((port = IOIteratorNext(iter))) {
+ cf_path = IORegistryEntryCreateCFProperty(port,
+ CFSTR(kIOCalloutDeviceKey), kCFAllocatorDefault, 0);
+ if (cf_path) {
+ result = CFStringGetCString(cf_path,
+ path, PATH_MAX, kCFStringEncodingASCII);
+ CFRelease(cf_path);
+ if (result)
+ if (!(list = sp_list_append(list, path, strlen(path) + 1)))
+ {
+ IOObjectRelease(port);
+ goto out;
+ }
+ }
+ IOObjectRelease(port);
+ }
+
+out:
+ free(path);
+out_release:
+ IOObjectRelease(iter);
+ return list;
+#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;
+ struct serial_struct serial_info;
+
+ 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);
+ udev_list_entry_foreach(ud_entry, ud_list)
+ {
+ path = udev_list_entry_get_name(ud_entry);
+ 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)
+ {
+ udev_device_unref(ud_dev);
+ 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"))
+ {
+ if ((fd = open(name, O_RDWR | O_NONBLOCK | O_NOCTTY)) < 0)
+ goto skip;
+ ioctl_result = ioctl(fd, TIOCGSERIAL, &serial_info);
+ close(fd);
+ if (ioctl_result != 0)
+ goto skip;
+ if (serial_info.type == PORT_UNKNOWN)
+ goto skip;
+ }
+ list = sp_list_append(list, (void *)name, strlen(name) + 1);
+skip:
+ udev_device_unref(ud_dev);
+ if (!list)
+ goto out;
+ }
+out:
+ udev_enumerate_unref(ud_enumerate);
+ udev_unref(ud);
+ return list;
+#endif
+}
+
+/**
+ * Free a port list returned by sp_list_ports.
+ */
+void sp_free_port_list(char **list)
+{
+ unsigned int i;
+ for (i = 0; list[i]; i++)
+ free(list[i]);
+ free(list);
+}
+
static int sp_validate_port(struct sp_port *port)
{
if (port == NULL)
return SP_ERR_ARG;
}
- term.c_iflag &= ~(IXON | IXOFF);
+ term.c_iflag &= ~(IXON | IXOFF | IXANY);
term.c_cflag &= ~CRTSCTS;
switch (flowcontrol) {
case 0:
term.c_cflag |= CRTSCTS;
break;
case 2:
- term.c_iflag |= IXON | IXOFF;
+ term.c_iflag |= IXON | IXOFF | IXANY;
break;
default:
return SP_ERR_ARG;
}
term.c_iflag &= ~IGNPAR;
- term.c_cflag &= ~(PARODD | PARENB);
+ term.c_cflag &= ~(PARENB | PARODD);
switch (parity) {
case SP_PARITY_NONE:
term.c_iflag |= IGNPAR;
/* Disable canonical mode, and don't echo input characters. */
term.c_lflag &= ~(ICANON | ECHO);
+ /* Ignore modem status lines; enable receiver */
+ term.c_cflag |= (CLOCAL | CREAD);
+
/* Write the configured settings. */
if (tcsetattr(port->fd, TCSADRAIN, &term) < 0)
return SP_ERR_FAIL;
projects / libserialport.git / blobdiff