#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 <glob.h>
#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 "libserialport.h"
+
+int sp_get_port_by_name(const char *portname, struct sp_port **port_ptr)
+{
+ struct sp_port *port;
+ int len;
+
+ *port_ptr = NULL;
+
+ if (!portname)
+ return SP_ERR_ARG;
+
+ if (!(port = malloc(sizeof(struct sp_port))))
+ return SP_ERR_MEM;
-#include "serialport.h"
+ len = strlen(portname) + 1;
+
+ if (!(port->name = malloc(len)))
+ {
+ free(port);
+ return SP_ERR_MEM;
+ }
+
+ memcpy(port->name, portname, len);
+
+ *port_ptr = port;
+
+ return SP_OK;
+}
+
+void sp_free_port(struct sp_port *port)
+{
+ if (!port)
+ return;
+
+ if (port->name)
+ free(port->name);
+
+ free(port);
+}
+
+static struct sp_port **sp_list_append(struct sp_port **list, const char *portname)
+{
+ void *tmp;
+ unsigned int count;
+ for (count = 0; list[count]; count++);
+ if (!(tmp = realloc(list, sizeof(struct sp_port *) * (count + 2))))
+ goto fail;
+ list = tmp;
+ if (sp_get_port_by_name(portname, &list[count]) != SP_OK)
+ goto fail;
+ list[count + 1] = NULL;
+ return list;
+fail:
+ sp_free_port_list(list);
+ return NULL;
+}
+
+int sp_list_ports(struct sp_port ***list_ptr)
+{
+ struct sp_port **list;
+ int ret = SP_OK;
+
+ if (!(list = malloc(sizeof(struct sp_port **))))
+ return SP_ERR_MEM;;
+
+ 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;
+ char *name;
+ int name_len;
+
+ if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("HARDWARE\\DEVICEMAP\\SERIALCOMM"),
+ 0, KEY_QUERY_VALUE, &key) != ERROR_SUCCESS)
+ {
+ ret = SP_ERR_FAIL;
+ goto out_done;
+ }
+ if (RegQueryInfoKey(key, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+ &max_value_len, &max_data_size, NULL, NULL) != ERROR_SUCCESS)
+ {
+ ret = SP_ERR_FAIL;
+ goto out_close;
+ }
+ max_data_len = max_data_size / sizeof(TCHAR);
+ if (!(value = malloc((max_value_len + 1) * sizeof(TCHAR))))
+ {
+ ret = SP_ERR_MEM;
+ goto out_close;
+ }
+ if (!(data = malloc((max_data_len + 1) * sizeof(TCHAR))))
+ {
+ ret = SP_ERR_MEM;
+ goto out_free_value;
+ }
+ while (
+ value_len = max_value_len + 1,
+ 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';
+#ifdef UNICODE
+ name_len = WideCharToMultiByte(CP_ACP, 0, data, -1, NULL, 0, NULL, NULL)
+#else
+ name_len = data_len + 1;
+#endif
+ if (!(name = malloc(name_len)))
+ {
+ ret = SP_ERR_MEM;
+ goto out;
+ }
+#ifdef UNICODE
+ WideCharToMultiByte(CP_ACP, 0, data, -1, name, name_len, NULL, NULL);
+#else
+ strcpy(name, data);
+#endif
+ if (type == REG_SZ && !(list = sp_list_append(list, name)))
+ {
+ ret = SP_ERR_MEM;
+ goto out;
+ }
+ index++;
+ }
+out:
+ free(data);
+out_free_value:
+ free(value);
+out_close:
+ RegCloseKey(key);
+out_done:
+#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)
+ {
+ ret = SP_ERR_FAIL;
+ goto out_done;
+ }
+
+ if (!(classes = IOServiceMatching(kIOSerialBSDServiceValue)))
+ {
+ ret = SP_ERR_FAIL;
+ goto out_done;
+ }
+
+ CFDictionarySetValue(classes,
+ CFSTR(kIOSerialBSDTypeKey), CFSTR(kIOSerialBSDAllTypes));
+
+ if (IOServiceGetMatchingServices(master, classes, &iter) != KERN_SUCCESS)
+ {
+ ret = SP_ERR_FAIL;
+ goto out_done;
+ }
+
+ if (!(path = malloc(PATH_MAX)))
+ {
+ ret = SP_ERR_MEM;
+ 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 && !(list = sp_list_append(list, path)))
+ {
+ ret = SP_ERR_MEM;
+ IOObjectRelease(port);
+ goto out;
+ }
+ }
+ 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;
+ 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, name);
+skip:
+ udev_device_unref(ud_dev);
+ if (!list)
+ {
+ ret = SP_ERR_MEM;
+ goto out;
+ }
+ }
+out:
+ udev_enumerate_unref(ud_enumerate);
+ udev_unref(ud);
+#endif
+
+ if (ret == SP_OK)
+ {
+ *list_ptr = list;
+ }
+ else
+ {
+ if (list)
+ sp_free_port_list(list);
+
+ *list_ptr = NULL;
+ }
+
+ return ret;
+}
+
+void sp_free_port_list(struct sp_port **list)
+{
+ unsigned int i;
+ for (i = 0; list[i]; i++)
+ sp_free_port(list[i]);
+ free(list);
+}
static int sp_validate_port(struct sp_port *port)
{
#define CHECK_PORT() do { if (!sp_validate_port(port)) return SP_ERR_ARG; } while (0)
-/**
- * Open the specified serial port.
- *
- * @param port Pointer to empty port structure allocated by caller.
- * @param portname Name of port to open.
- * @param flags Flags to use when opening the serial port. Possible flags
- * are: SP_MODE_RDWR, SP_MODE_RDONLY, SP_MODE_NONBLOCK.
- *
- * @return SP_OK on success, SP_ERR_FAIL on failure,
- * or SP_ERR_ARG if an invalid port or name is passed.
- */
-int sp_open(struct sp_port *port, char *portname, int flags)
+int sp_open(struct sp_port *port, int flags)
{
if (!port)
return SP_ERR_ARG;
- if (!portname)
- return SP_ERR_ARG;
-
- port->name = portname;
-
#ifdef _WIN32
DWORD desired_access = 0, flags_and_attributes = 0;
+ char *escaped_port_name;
+
+ /* Prefix port name with '\\.\' to work with ports above COM9. */
+ if (!(escaped_port_name = malloc(strlen(port->name + 5))))
+ return SP_ERR_MEM;
+ sprintf(escaped_port_name, "\\\\.\\%s", port->name);
+
/* Map 'flags' to the OS-specific settings. */
desired_access |= GENERIC_READ;
flags_and_attributes = FILE_ATTRIBUTE_NORMAL;
if (flags & SP_MODE_NONBLOCK)
flags_and_attributes |= FILE_FLAG_OVERLAPPED;
- port->hdl = CreateFile(port->name, desired_access, 0, 0,
+ port->hdl = CreateFile(escaped_port_name, desired_access, 0, 0,
OPEN_EXISTING, flags_and_attributes, 0);
+
+ free(escaped_port_name);
+
if (port->hdl == INVALID_HANDLE_VALUE)
return SP_ERR_FAIL;
#else
return SP_OK;
}
-/**
- * Close the specified serial port.
- *
- * @param port Pointer to port structure.
- *
- * @return SP_OK on success, SP_ERR_FAIL on failure,
- * or SP_ERR_ARG if an invalid port is passed.
- */
int sp_close(struct sp_port *port)
{
CHECK_PORT();
return SP_OK;
}
-/**
- * Flush serial port buffers.
- *
- * @param port Pointer to port structure.
- *
- * @return SP_OK on success, SP_ERR_FAIL on failure,
- * or SP_ERR_ARG if an invalid port is passed.
- */
int sp_flush(struct sp_port *port)
{
CHECK_PORT();
return SP_OK;
}
-/**
- * Write a number of bytes to the specified serial port.
- *
- * @param port Pointer to port structure.
- * @param buf Buffer containing the bytes to write.
- * @param count Number of bytes to write.
- *
- * @return The number of bytes written, SP_ERR_FAIL on failure,
- * or SP_ERR_ARG if an invalid port is passed.
- */
int sp_write(struct sp_port *port, const void *buf, size_t count)
{
CHECK_PORT();
#endif
}
-/**
- * Read a number of bytes from the specified serial port.
- *
- * @param port Pointer to port structure.
- * @param buf Buffer where to store the bytes that are read.
- * @param count The number of bytes to read.
- *
- * @return The number of bytes read, SP_ERR_FAIL on failure,
- * or SP_ERR_ARG if an invalid port is passed.
- */
int sp_read(struct sp_port *port, void *buf, size_t count)
{
CHECK_PORT();
#endif
}
-/**
- * Set serial parameters for the specified serial port.
- *
- * @param port Pointer to port structure.
- * @param baudrate The baudrate to set.
- * @param bits The number of data bits to use.
- * @param parity The parity setting to use (0 = none, 1 = even, 2 = odd).
- * @param stopbits The number of stop bits to use (1 or 2).
- * @param flowcontrol The flow control settings to use (0 = none, 1 = RTS/CTS,
- * 2 = XON/XOFF).
- *
- * @return The number of bytes read, SP_ERR_FAIL on failure,
- * or SP_ERR_ARG if an invalid argument is passed.
- */
int sp_set_params(struct sp_port *port, int baudrate,
int bits, int parity, int stopbits,
int flowcontrol, int rts, int dtr)
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;
return SP_OK;
}
-/**
- * Get error code for failed operation.
- *
- * In order to obtain the correct result, this function should be called
- * straight after the failure, before executing any other system operations.
- *
- * @return The system's numeric code for the error that caused the last
- * operation to fail.
- */
int sp_last_error_code(void)
{
#ifdef _WIN32
#endif
}
-/**
- * Get error message for failed operation.
- *
- * In order to obtain the correct result, this function should be called
- * straight after the failure, before executing other system operations.
- *
- * @return The system's message for the error that caused the last
- * operation to fail. This string may be allocated by the function,
- * and can be freed after use by calling sp_free_error_message.
- */
char *sp_last_error_message(void)
{
#ifdef _WIN32
#endif
}
-/**
- * Free error message.
- *
- * This function can be used to free a string returned by the
- * sp_last_error_message function.
- */
void sp_free_error_message(char *message)
{
#ifdef _WIN32
LocalFree(message);
+#else
+ (void)message;
#endif
}
projects / libserialport.git / blobdiff