#include "linux/serial.h"
#endif
-#include "serialport.h"
+#include "libserialport.h"
-struct sp_port *sp_get_port_by_name(const char *portname)
+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 NULL;
+ return SP_ERR_ARG;
if (!(port = malloc(sizeof(struct sp_port))))
- return NULL;
+ return SP_ERR_MEM;
len = strlen(portname) + 1;
if (!(port->name = malloc(len)))
{
free(port);
- return NULL;
+ return SP_ERR_MEM;
}
memcpy(port->name, portname, len);
- return port;
+ *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)
if (!(tmp = realloc(list, sizeof(struct sp_port *) * (count + 2))))
goto fail;
list = tmp;
- if (!(list[count] = sp_get_port_by_name(portname)))
+ if (sp_get_port_by_name(portname, &list[count]) != SP_OK)
goto fail;
list[count + 1] = NULL;
return list;
return NULL;
}
-/**
- * List the serial ports available on the system.
- *
- * @return A null-terminated array of port name strings.
- */
-struct sp_port **sp_list_ports(void)
+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 NULL;
+ return SP_ERR_MEM;;
list[0] = NULL;
if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("HARDWARE\\DEVICEMAP\\SERIALCOMM"),
0, KEY_QUERY_VALUE, &key) != ERROR_SUCCESS)
- return NULL;
+ {
+ 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,
+ 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)
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)
- if (!(list = sp_list_append(list, name)))
- goto out;
+ if (type == REG_SZ && !(list = sp_list_append(list, name)))
+ {
+ ret = SP_ERR_MEM;
+ goto out;
+ }
index++;
}
out:
free(value);
out_close:
RegCloseKey(key);
- return list;
+out_done:
#endif
#ifdef __APPLE__
mach_port_t master;
Boolean result;
if (IOMasterPort(MACH_PORT_NULL, &master) != KERN_SUCCESS)
- return NULL;
+ {
+ ret = SP_ERR_FAIL;
+ goto out_done;
+ }
if (!(classes = IOServiceMatching(kIOSerialBSDServiceValue)))
- return NULL;
+ {
+ ret = SP_ERR_FAIL;
+ goto out_done;
+ }
CFDictionarySetValue(classes,
CFSTR(kIOSerialBSDTypeKey), CFSTR(kIOSerialBSDAllTypes));
- if (!(IOServiceGetMatchingServices(master, classes, &iter)))
- return NULL;
+ 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,
result = CFStringGetCString(cf_path,
path, PATH_MAX, kCFStringEncodingASCII);
CFRelease(cf_path);
- if (result)
- if (!(list = sp_list_append(list, path)))
- {
- IOObjectRelease(port);
- goto out;
- }
+ 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);
- return list;
+out_done:
#endif
#ifdef __linux__
struct udev *ud;
skip:
udev_device_unref(ud_dev);
if (!list)
+ {
+ ret = SP_ERR_MEM;
goto out;
+ }
}
out:
udev_enumerate_unref(ud_enumerate);
udev_unref(ud);
- return list;
#endif
+
+ if (ret == SP_OK)
+ {
+ *list_ptr = list;
+ }
+ else
+ {
+ if (list)
+ sp_free_port_list(list);
+
+ *list_ptr = NULL;
+ }
+
+ return ret;
}
-/**
- * Free a port list returned by sp_list_ports.
- */
void sp_free_port_list(struct sp_port **list)
{
unsigned int i;
for (i = 0; list[i]; i++)
- free(list[i]);
+ sp_free_port(list[i]);
free(list);
}
#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, int flags)
{
if (!port)
#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_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
projects / libserialport.git / blobdiff