* Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
* 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>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
#ifdef _WIN32
#include <windows.h>
#include <tchar.h>
+#include <stdio.h>
#else
#include <termios.h>
#include <sys/ioctl.h>
#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"
+#if defined(TCGETX) && defined(TCSETX) && defined(HAVE_TERMIOX)
+#define USE_TERMIOX
#endif
+#endif
+
+#include "libserialport.h"
+
+struct port_data {
+#ifdef _WIN32
+ DCB dcb;
+#else
+ struct termios term;
+ int controlbits;
+#ifdef USE_TERMIOX
+ int flow;
+#endif
+#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;
+};
+
+const struct std_baudrate std_baudrates[] = {
+#ifdef _WIN32
+ /*
+ * The baudrates 50/75/134/150/200/1800/230400/460800 do not seem to
+ * have documented CBR_* macros.
+ */
+ BAUD(110), BAUD(300), BAUD(600), BAUD(1200), BAUD(2400), BAUD(4800),
+ BAUD(9600), BAUD(14400), BAUD(19200), BAUD(38400), BAUD(57600),
+ BAUD(115200), BAUD(128000), BAUD(256000),
+#else
+ BAUD(50), BAUD(75), BAUD(110), BAUD(134), BAUD(150), BAUD(200),
+ BAUD(300), BAUD(600), BAUD(1200), BAUD(1800), BAUD(2400), BAUD(4800),
+ BAUD(9600), BAUD(19200), BAUD(38400), BAUD(57600), BAUD(115200),
+ BAUD(230400),
+#if !defined(__APPLE__) && !defined(__OpenBSD__)
+ BAUD(460800),
+#endif
+#endif
+};
+
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
+#define NUM_STD_BAUDRATES ARRAY_SIZE(std_baudrates)
-#include "serialport.h"
+#define TRY(x) do { int ret = x; if (ret != SP_OK) return ret; } while (0)
-int sp_get_port_by_name(const char *portname, struct sp_port **port_ptr)
+/* Helper functions. */
+static enum sp_return validate_port(struct sp_port *port);
+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;
int len;
+ if (!port_ptr)
+ return SP_ERR_ARG;
+
*port_ptr = NULL;
if (!portname)
len = strlen(portname) + 1;
- if (!(port->name = malloc(len)))
- {
+ if (!(port->name = malloc(len))) {
free(port);
return SP_ERR_MEM;
}
memcpy(port->name, portname, len);
+#ifdef _WIN32
+ port->hdl = INVALID_HANDLE_VALUE;
+#else
+ port->fd = -1;
+#endif
+
*port_ptr = port;
return SP_OK;
}
+enum sp_return sp_copy_port(const struct sp_port *port, struct sp_port **copy_ptr)
+{
+ if (!copy_ptr)
+ return SP_ERR_ARG;
+
+ *copy_ptr = NULL;
+
+ if (!port || !port->name)
+ return SP_ERR_ARG;
+
+ return sp_get_port_by_name(port->name, copy_ptr);
+}
+
void sp_free_port(struct sp_port *port)
{
if (!port)
free(port);
}
-static struct sp_port **sp_list_append(struct sp_port **list, const char *portname)
+static struct sp_port **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;
goto fail;
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.
- */
-int sp_list_ports(struct sp_port ***list_ptr)
+enum sp_return 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;;
+ return SP_ERR_MEM;
list[0] = NULL;
int name_len;
if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("HARDWARE\\DEVICEMAP\\SERIALCOMM"),
- 0, KEY_QUERY_VALUE, &key) != ERROR_SUCCESS)
- {
+ 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)
- {
+ &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))))
- {
+ 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))))
- {
+ 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)
#else
name_len = data_len + 1;
#endif
- if (!(name = malloc(name_len)))
- {
+ if (!(name = malloc(name_len))) {
ret = SP_ERR_MEM;
goto out;
}
#else
strcpy(name, data);
#endif
- if (type == REG_SZ && !(list = sp_list_append(list, name)))
- {
+ if (type == REG_SZ && !(list = list_append(list, name))) {
ret = SP_ERR_MEM;
goto out;
}
CFTypeRef cf_path;
Boolean result;
- if (IOMasterPort(MACH_PORT_NULL, &master) != KERN_SUCCESS)
- {
+ if (IOMasterPort(MACH_PORT_NULL, &master) != KERN_SUCCESS) {
ret = SP_ERR_FAIL;
goto out_done;
}
- if (!(classes = IOServiceMatching(kIOSerialBSDServiceValue)))
- {
+ if (!(classes = IOServiceMatching(kIOSerialBSDServiceValue))) {
ret = SP_ERR_FAIL;
goto out_done;
}
CFDictionarySetValue(classes,
CFSTR(kIOSerialBSDTypeKey), CFSTR(kIOSerialBSDAllTypes));
- if (!(IOServiceGetMatchingServices(master, classes, &iter)))
- {
+ if (IOServiceGetMatchingServices(master, classes, &iter) != KERN_SUCCESS) {
ret = SP_ERR_FAIL;
goto out_done;
}
- if (!(path = malloc(PATH_MAX)))
- {
+ if (!(path = malloc(PATH_MAX))) {
ret = SP_ERR_MEM;
goto out_release;
}
result = CFStringGetCString(cf_path,
path, PATH_MAX, kCFStringEncodingASCII);
CFRelease(cf_path);
- if (result && !(list = sp_list_append(list, path)))
- {
+ if (result && !(list = list_append(list, path))) {
ret = SP_ERR_MEM;
IOObjectRelease(port);
goto out;
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)
- {
+ 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)
- {
+ if (ud_parent == NULL) {
udev_device_unref(ud_dev);
continue;
}
* 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 (driver && !strcmp(driver, "serial8250")) {
if ((fd = open(name, O_RDWR | O_NONBLOCK | O_NOCTTY)) < 0)
goto skip;
ioctl_result = ioctl(fd, TIOCGSERIAL, &serial_info);
if (serial_info.type == PORT_UNKNOWN)
goto skip;
}
- list = sp_list_append(list, name);
+ list = list_append(list, name);
skip:
udev_device_unref(ud_dev);
- if (!list)
- {
+ if (!list) {
ret = SP_ERR_MEM;
goto out;
}
udev_unref(ud);
#endif
- if (ret == SP_OK)
- {
+ if (ret == SP_OK) {
*list_ptr = list;
- }
- else
- {
+ } 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++)
sp_free_port(list[i]);
free(list);
}
-static int sp_validate_port(struct sp_port *port)
+static enum sp_return validate_port(struct sp_port *port)
{
if (port == NULL)
return 0;
return 1;
}
-#define CHECK_PORT() do { if (!sp_validate_port(port)) return SP_ERR_ARG; } while (0)
+#define CHECK_PORT() do { if (!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)
+enum sp_return sp_open(struct sp_port *port, enum sp_mode flags)
{
if (!port)
return SP_ERR_ARG;
#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_RDWR)
+ if (flags & SP_MODE_READ)
+ desired_access |= GENERIC_READ;
+ if (flags & SP_MODE_WRITE)
desired_access |= GENERIC_WRITE;
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
int flags_local = 0;
+ struct port_data data;
+ struct sp_port_config config;
+ int ret;
+
/* Map 'flags' to the OS-specific settings. */
- if (flags & SP_MODE_RDWR)
+ if (flags & (SP_MODE_READ | SP_MODE_WRITE))
flags_local |= O_RDWR;
- if (flags & SP_MODE_RDONLY)
+ else if (flags & SP_MODE_READ)
flags_local |= O_RDONLY;
+ else if (flags & SP_MODE_WRITE)
+ flags_local |= O_WRONLY;
if (flags & SP_MODE_NONBLOCK)
flags_local |= O_NONBLOCK;
if ((port->fd = open(port->name, flags_local)) < 0)
return SP_ERR_FAIL;
+
+ ret = get_config(port, &data, &config);
+
+ if (ret < 0) {
+ sp_close(port);
+ return ret;
+ }
+
+ /* Turn off all serial port cooking. */
+ data.term.c_iflag &= ~(ISTRIP | INLCR | ICRNL);
+ data.term.c_oflag &= ~(ONLCR | OCRNL | ONOCR);
+#if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__)
+ data.term.c_oflag &= ~OFILL;
+#endif
+ /* Disable canonical mode, and don't echo input characters. */
+ data.term.c_lflag &= ~(ICANON | ECHO);
+
+ /* Ignore modem status lines; enable receiver */
+ data.term.c_cflag |= (CLOCAL | CREAD);
+
+ ret = set_config(port, &data, &config);
+
+ if (ret < 0) {
+ sp_close(port);
+ return ret;
+ }
#endif
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)
+enum sp_return sp_close(struct sp_port *port)
{
CHECK_PORT();
/* Returns non-zero upon success, 0 upon failure. */
if (CloseHandle(port->hdl) == 0)
return SP_ERR_FAIL;
+ port->hdl = INVALID_HANDLE_VALUE;
#else
/* Returns 0 upon success, -1 upon failure. */
if (close(port->fd) == -1)
return SP_ERR_FAIL;
+ port->fd = -1;
#endif
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)
+enum sp_return sp_flush(struct sp_port *port, enum sp_buffer buffers)
{
CHECK_PORT();
#ifdef _WIN32
+ DWORD flags = 0;
+ if (buffers & SP_BUF_INPUT)
+ flags |= PURGE_RXCLEAR;
+ if (buffers & SP_BUF_OUTPUT)
+ flags |= PURGE_TXCLEAR;
+
/* Returns non-zero upon success, 0 upon failure. */
- if (PurgeComm(port->hdl, PURGE_RXCLEAR | PURGE_TXCLEAR) == 0)
+ if (PurgeComm(port->hdl, flags) == 0)
return SP_ERR_FAIL;
#else
+ int flags = 0;
+ if (buffers & SP_BUF_BOTH)
+ flags = TCIOFLUSH;
+ else if (buffers & SP_BUF_INPUT)
+ flags = TCIFLUSH;
+ if (buffers & SP_BUF_OUTPUT)
+ flags = TCOFLUSH;
+
/* Returns 0 upon success, -1 upon failure. */
- if (tcflush(port->fd, TCIOFLUSH) < 0)
+ if (tcflush(port->fd, flags) < 0)
return SP_ERR_FAIL;
#endif
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)
+enum sp_return sp_write(struct sp_port *port, const void *buf, size_t count)
{
CHECK_PORT();
#ifdef _WIN32
DWORD written = 0;
+
/* Returns non-zero upon success, 0 upon failure. */
if (WriteFile(port->hdl, buf, count, &written, NULL) == 0)
return SP_ERR_FAIL;
#else
/* Returns the number of bytes written, or -1 upon failure. */
ssize_t written = write(port->fd, buf, count);
+
if (written < 0)
return SP_ERR_FAIL;
else
- return written;;
+ return written;
#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)
+enum sp_return sp_read(struct sp_port *port, void *buf, size_t count)
{
CHECK_PORT();
#ifdef _WIN32
DWORD bytes_read = 0;
+
/* Returns non-zero upon success, 0 upon failure. */
if (ReadFile(port->hdl, buf, count, &bytes_read, NULL) == 0)
return SP_ERR_FAIL;
return bytes_read;
#else
ssize_t bytes_read;
+
/* Returns the number of bytes read, or -1 upon failure. */
if ((bytes_read = read(port->fd, buf, count)) < 0)
return SP_ERR_FAIL;
#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)
+#ifdef __linux__
+static enum sp_return get_baudrate(int fd, int *baudrate)
{
- CHECK_PORT();
+ void *data;
-#ifdef _WIN32
- DCB dcb;
+ if (!(data = malloc(get_termios_size())))
+ return SP_ERR_MEM;
- if (!GetCommState(port->hdl, &dcb))
+ if (ioctl(fd, get_termios_get_ioctl(), data) < 0)
return SP_ERR_FAIL;
- switch (baudrate) {
- /*
- * The baudrates 50/75/134/150/200/1800/230400/460800 do not seem to
- * have documented CBR_* macros.
- */
- case 110:
- dcb.BaudRate = CBR_110;
- break;
- case 300:
- dcb.BaudRate = CBR_300;
- break;
- case 600:
- dcb.BaudRate = CBR_600;
- break;
- case 1200:
- dcb.BaudRate = CBR_1200;
- break;
- case 2400:
- dcb.BaudRate = CBR_2400;
- break;
- case 4800:
- dcb.BaudRate = CBR_4800;
- break;
- case 9600:
- dcb.BaudRate = CBR_9600;
- break;
- case 14400:
- dcb.BaudRate = CBR_14400; /* Not available on Unix? */
- break;
- case 19200:
- dcb.BaudRate = CBR_19200;
- break;
- case 38400:
- dcb.BaudRate = CBR_38400;
- break;
- case 57600:
- dcb.BaudRate = CBR_57600;
- break;
- case 115200:
- dcb.BaudRate = CBR_115200;
- break;
- case 128000:
- dcb.BaudRate = CBR_128000; /* Not available on Unix? */
+ *baudrate = get_termios_speed(data);
+
+ return SP_OK;
+}
+
+static enum sp_return set_baudrate(int fd, int baudrate)
+{
+ void *data;
+
+ if (!(data = malloc(get_termios_size())))
+ return SP_ERR_MEM;
+
+ if (ioctl(fd, get_termios_get_ioctl(), data) < 0)
+ return SP_ERR_FAIL;
+
+ set_termios_speed(data, baudrate);
+
+ if (ioctl(fd, get_termios_set_ioctl(), data) < 0)
+ return SP_ERR_FAIL;
+
+ return SP_OK;
+}
+
+#ifdef USE_TERMIOX
+static enum sp_return get_flow(int fd, int *flow)
+{
+ void *data;
+
+ if (!(data = malloc(get_termiox_size())))
+ return SP_ERR_MEM;
+
+ if (ioctl(fd, TCGETX, data) < 0)
+ return SP_ERR_FAIL;
+
+ *flow = get_termiox_flow(data);
+
+ return SP_OK;
+}
+
+static enum sp_return set_flow(int fd, int flow)
+{
+ void *data;
+
+ if (!(data = malloc(get_termiox_size())))
+ return SP_ERR_MEM;
+
+ if (ioctl(fd, TCGETX, data) < 0)
+ return SP_ERR_FAIL;
+
+ set_termiox_flow(data, flow);
+
+ if (ioctl(fd, TCSETX, data) < 0)
+ return SP_ERR_FAIL;
+
+ return SP_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)
+{
+ unsigned int i;
+
+#ifdef _WIN32
+ if (!GetCommState(port->hdl, &data->dcb))
+ return SP_ERR_FAIL;
+
+ for (i = 0; i < NUM_STD_BAUDRATES; i++) {
+ if (data->dcb.BaudRate == std_baudrates[i].index) {
+ config->baudrate = std_baudrates[i].value;
+ break;
+ }
+ }
+
+ if (i == NUM_STD_BAUDRATES)
+ /* BaudRate field can be either an index or a custom baud rate. */
+ config->baudrate = data->dcb.BaudRate;
+
+ config->bits = data->dcb.ByteSize;
+
+ if (data->dcb.fParity)
+ switch (data->dcb.Parity) {
+ case NOPARITY:
+ config->parity = SP_PARITY_NONE;
+ break;
+ case EVENPARITY:
+ config->parity = SP_PARITY_EVEN;
+ break;
+ case ODDPARITY:
+ config->parity = SP_PARITY_ODD;
+ break;
+ default:
+ config->parity = -1;
+ }
+ else
+ config->parity = SP_PARITY_NONE;
+
+ switch (data->dcb.StopBits) {
+ case ONESTOPBIT:
+ config->stopbits = 1;
break;
- case 256000:
- dcb.BaudRate = CBR_256000; /* Not available on Unix? */
+ case TWOSTOPBITS:
+ config->stopbits = 2;
break;
default:
- return SP_ERR_ARG;
+ config->stopbits = -1;
}
- switch (stopbits) {
- /* Note: There's also ONE5STOPBITS == 1.5 (unneeded so far). */
- case 1:
- dcb.StopBits = ONESTOPBIT;
+ switch (data->dcb.fRtsControl) {
+ case RTS_CONTROL_DISABLE:
+ config->rts = SP_RTS_OFF;
+ break;
+ case RTS_CONTROL_ENABLE:
+ config->rts = SP_RTS_ON;
break;
- case 2:
- dcb.StopBits = TWOSTOPBITS;
+ case RTS_CONTROL_HANDSHAKE:
+ config->rts = SP_RTS_FLOW_CONTROL;
break;
default:
- return SP_ERR_ARG;
+ config->rts = -1;
}
- switch (parity) {
- /* Note: There's also SPACEPARITY, MARKPARITY (unneeded so far). */
- case SP_PARITY_NONE:
- dcb.Parity = NOPARITY;
+ config->cts = data->dcb.fOutxCtsFlow ? SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
+
+ switch (data->dcb.fDtrControl) {
+ case DTR_CONTROL_DISABLE:
+ config->dtr = SP_DTR_OFF;
break;
- case SP_PARITY_EVEN:
- dcb.Parity = EVENPARITY;
+ case DTR_CONTROL_ENABLE:
+ config->dtr = SP_DTR_ON;
break;
- case SP_PARITY_ODD:
- dcb.Parity = ODDPARITY;
+ case DTR_CONTROL_HANDSHAKE:
+ config->dtr = SP_DTR_FLOW_CONTROL;
break;
default:
- return SP_ERR_ARG;
+ config->dtr = -1;
}
- if (rts != -1) {
- if (rts)
- dcb.fRtsControl = RTS_CONTROL_ENABLE;
- else
- dcb.fRtsControl = RTS_CONTROL_DISABLE;
- }
+ config->dsr = data->dcb.fOutxDsrFlow ? SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
- if (dtr != -1) {
- if (dtr)
- dcb.fDtrControl = DTR_CONTROL_ENABLE;
+ if (data->dcb.fInX) {
+ if (data->dcb.fOutX)
+ config->xon_xoff = SP_XONXOFF_INOUT;
else
- dcb.fDtrControl = DTR_CONTROL_DISABLE;
+ config->xon_xoff = SP_XONXOFF_IN;
+ } else {
+ if (data->dcb.fOutX)
+ config->xon_xoff = SP_XONXOFF_OUT;
+ else
+ config->xon_xoff = SP_XONXOFF_DISABLED;
}
- if (!SetCommState(port->hdl, &dcb))
+#else // !_WIN32
+
+ if (tcgetattr(port->fd, &data->term) < 0)
return SP_ERR_FAIL;
-#else
- struct termios term;
- speed_t baud;
- int controlbits;
- if (tcgetattr(port->fd, &term) < 0)
+ if (ioctl(port->fd, TIOCMGET, &data->controlbits) < 0)
return SP_ERR_FAIL;
- switch (baudrate) {
- case 50:
- baud = B50;
- break;
- case 75:
- baud = B75;
- break;
- case 110:
- baud = B110;
- break;
- case 134:
- baud = B134;
- break;
- case 150:
- baud = B150;
- break;
- case 200:
- baud = B200;
- break;
- case 300:
- baud = B300;
- break;
- case 600:
- baud = B600;
- break;
- case 1200:
- baud = B1200;
- break;
- case 1800:
- baud = B1800;
- break;
- case 2400:
- baud = B2400;
- break;
- case 4800:
- baud = B4800;
- break;
- case 9600:
- baud = B9600;
- break;
- case 19200:
- baud = B19200;
- break;
- case 38400:
- baud = B38400;
- break;
- case 57600:
- baud = B57600;
+#ifdef USE_TERMIOX
+ TRY(get_flow(port->fd, &data->flow));
+#endif
+
+ for (i = 0; i < NUM_STD_BAUDRATES; i++) {
+ if (cfgetispeed(&data->term) == std_baudrates[i].index) {
+ config->baudrate = std_baudrates[i].value;
+ break;
+ }
+ }
+
+ if (i == NUM_STD_BAUDRATES) {
+#ifdef __APPLE__
+ config->baudrate = (int)data->term.c_ispeed;
+#elif defined(__linux__)
+ TRY(get_baudrate(port->fd, &config->baudrate));
+#else
+ config->baudrate = -1;
+#endif
+ }
+
+ switch (data->term.c_cflag & CSIZE) {
+ case CS8:
+ config->bits = 8;
break;
- case 115200:
- baud = B115200;
+ case CS7:
+ config->bits = 7;
break;
- case 230400:
- baud = B230400;
+ case CS6:
+ config->bits = 6;
break;
-#if !defined(__APPLE__) && !defined(__OpenBSD__)
- case 460800:
- baud = B460800;
+ case CS5:
+ config->bits = 5;
break;
-#endif
default:
- return SP_ERR_ARG;
+ config->bits = -1;
}
- if (cfsetospeed(&term, baud) < 0)
- return SP_ERR_FAIL;
+ if (!(data->term.c_cflag & PARENB) && (data->term.c_iflag & IGNPAR))
+ config->parity = SP_PARITY_NONE;
+ else if (!(data->term.c_cflag & PARENB) || (data->term.c_iflag & IGNPAR))
+ config->parity = -1;
+ else
+ config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_ODD : SP_PARITY_EVEN;
+
+ config->stopbits = (data->term.c_cflag & CSTOPB) ? 2 : 1;
+
+ if (data->term.c_cflag & CRTSCTS) {
+ config->rts = SP_RTS_FLOW_CONTROL;
+ config->cts = SP_CTS_FLOW_CONTROL;
+ } else {
+#ifdef USE_TERMIOX
+ if (data->flow & RTS_FLOW)
+ config->rts = SP_RTS_FLOW_CONTROL;
+ else
+ config->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF;
+
+ config->cts = (data->flow & CTS_FLOW) ? SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
+#else
+ config->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF;
+ config->cts = SP_CTS_IGNORE;
+#endif
+ }
+
+#ifdef USE_TERMIOX
+ if (data->flow & DTR_FLOW)
+ config->dtr = SP_DTR_FLOW_CONTROL;
+ else
+ config->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF;
+
+ config->dsr = (data->flow & DSR_FLOW) ? SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
+#else
+ config->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF;
+ config->dsr = SP_DSR_IGNORE;
+#endif
+
+ if (data->term.c_iflag & IXOFF) {
+ if (data->term.c_iflag & IXON)
+ config->xon_xoff = SP_XONXOFF_INOUT;
+ else
+ config->xon_xoff = SP_XONXOFF_IN;
+ } else {
+ if (data->term.c_iflag & IXON)
+ config->xon_xoff = SP_XONXOFF_OUT;
+ else
+ config->xon_xoff = SP_XONXOFF_DISABLED;
+ }
+#endif
+
+ return SP_OK;
+}
+
+static enum sp_return set_config(struct sp_port *port, struct port_data *data,
+ const struct sp_port_config *config)
+{
+ unsigned int i;
+#ifdef __APPLE__
+ BAUD_TYPE baud_nonstd;
+
+ baud_nonstd = B0;
+#endif
+#ifdef __linux__
+ int baud_nonstd = 0;
+#endif
+
+#ifdef _WIN32
+ if (config->baudrate >= 0) {
+ for (i = 0; i < NUM_STD_BAUDRATES; i++) {
+ if (config->baudrate == std_baudrates[i].value) {
+ data->dcb.BaudRate = std_baudrates[i].index;
+ break;
+ }
+ }
+
+ if (i == NUM_STD_BAUDRATES)
+ data->dcb.BaudRate = config->baudrate;
+ }
- if (cfsetispeed(&term, baud) < 0)
+ if (config->bits >= 0)
+ data->dcb.ByteSize = config->bits;
+
+ 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;
+ case SP_PARITY_EVEN:
+ data->dcb.Parity = EVENPARITY;
+ break;
+ case SP_PARITY_ODD:
+ data->dcb.Parity = ODDPARITY;
+ break;
+ default:
+ return SP_ERR_ARG;
+ }
+ }
+
+ if (config->stopbits >= 0) {
+ switch (config->stopbits) {
+ /* Note: There's also ONE5STOPBITS == 1.5 (unneeded so far). */
+ case 1:
+ data->dcb.StopBits = ONESTOPBIT;
+ break;
+ case 2:
+ data->dcb.StopBits = TWOSTOPBITS;
+ break;
+ default:
+ return SP_ERR_ARG;
+ }
+ }
+
+ if (config->rts >= 0) {
+ switch (config->rts) {
+ case SP_RTS_OFF:
+ data->dcb.fRtsControl = RTS_CONTROL_DISABLE;
+ break;
+ case SP_RTS_ON:
+ data->dcb.fRtsControl = RTS_CONTROL_ENABLE;
+ break;
+ case SP_RTS_FLOW_CONTROL:
+ data->dcb.fRtsControl = RTS_CONTROL_HANDSHAKE;
+ break;
+ default:
+ return SP_ERR_ARG;
+ }
+ }
+
+ if (config->cts >= 0) {
+ switch (config->cts) {
+ case SP_CTS_IGNORE:
+ data->dcb.fOutxCtsFlow = FALSE;
+ break;
+ case SP_CTS_FLOW_CONTROL:
+ data->dcb.fOutxCtsFlow = TRUE;
+ break;
+ default:
+ return SP_ERR_ARG;
+ }
+ }
+
+ if (config->dtr >= 0) {
+ switch (config->dtr) {
+ case SP_DTR_OFF:
+ data->dcb.fDtrControl = DTR_CONTROL_DISABLE;
+ break;
+ case SP_DTR_ON:
+ data->dcb.fDtrControl = DTR_CONTROL_ENABLE;
+ break;
+ case SP_DTR_FLOW_CONTROL:
+ data->dcb.fDtrControl = DTR_CONTROL_HANDSHAKE;
+ break;
+ default:
+ return SP_ERR_ARG;
+ }
+ }
+
+ if (config->dsr >= 0) {
+ switch (config->dsr) {
+ case SP_DSR_IGNORE:
+ data->dcb.fOutxDsrFlow = FALSE;
+ break;
+ case SP_DSR_FLOW_CONTROL:
+ data->dcb.fOutxDsrFlow = TRUE;
+ break;
+ default:
+ return SP_ERR_ARG;
+ }
+ }
+
+ if (config->xon_xoff >= 0) {
+ switch (config->xon_xoff) {
+ case SP_XONXOFF_DISABLED:
+ data->dcb.fInX = FALSE;
+ data->dcb.fOutX = FALSE;
+ break;
+ case SP_XONXOFF_IN:
+ data->dcb.fInX = TRUE;
+ data->dcb.fOutX = FALSE;
+ break;
+ case SP_XONXOFF_OUT:
+ data->dcb.fInX = FALSE;
+ data->dcb.fOutX = TRUE;
+ break;
+ case SP_XONXOFF_INOUT:
+ data->dcb.fInX = TRUE;
+ data->dcb.fOutX = TRUE;
+ break;
+ default:
+ return SP_ERR_ARG;
+ }
+ }
+
+ if (!SetCommState(port->hdl, &data->dcb))
return SP_ERR_FAIL;
- term.c_cflag &= ~CSIZE;
- switch (bits) {
- case 8:
- term.c_cflag |= CS8;
- break;
- case 7:
- term.c_cflag |= CS7;
- break;
- default:
- return SP_ERR_ARG;
+#else /* !_WIN32 */
+
+ int controlbits;
+
+ if (config->baudrate >= 0) {
+ for (i = 0; i < NUM_STD_BAUDRATES; i++) {
+ if (config->baudrate == std_baudrates[i].value) {
+ if (cfsetospeed(&data->term, std_baudrates[i].index) < 0)
+ return SP_ERR_FAIL;
+
+ if (cfsetispeed(&data->term, std_baudrates[i].index) < 0)
+ return SP_ERR_FAIL;
+ break;
+ }
+ }
+
+ /* Non-standard baud rate */
+ if (i == NUM_STD_BAUDRATES) {
+#ifdef __APPLE__
+ /* Set "dummy" baud rate */
+ if (cfsetspeed(&data->term, B9600) < 0)
+ return SP_ERR_FAIL;
+ baud_nonstd = config->baudrate;
+#elif defined(__linux__)
+ baud_nonstd = 1;
+#else
+ return SP_ERR_ARG;
+#endif
+ }
}
- term.c_cflag &= ~CSTOPB;
- switch (stopbits) {
- case 1:
- term.c_cflag &= ~CSTOPB;
- break;
- case 2:
- term.c_cflag |= CSTOPB;
- break;
- default:
- return SP_ERR_ARG;
+ if (config->bits >= 0) {
+ data->term.c_cflag &= ~CSIZE;
+ switch (config->bits) {
+ case 8:
+ data->term.c_cflag |= CS8;
+ break;
+ case 7:
+ data->term.c_cflag |= CS7;
+ break;
+ case 6:
+ data->term.c_cflag |= CS6;
+ break;
+ case 5:
+ data->term.c_cflag |= CS5;
+ break;
+ default:
+ return SP_ERR_ARG;
+ }
}
- term.c_iflag &= ~(IXON | IXOFF | IXANY);
- term.c_cflag &= ~CRTSCTS;
- switch (flowcontrol) {
- case 0:
- /* No flow control. */
- break;
- case 1:
- term.c_cflag |= CRTSCTS;
- break;
- case 2:
- term.c_iflag |= IXON | IXOFF | IXANY;
- break;
- default:
- return SP_ERR_ARG;
+ if (config->parity >= 0) {
+ data->term.c_iflag &= ~IGNPAR;
+ data->term.c_cflag &= ~(PARENB | PARODD);
+ switch (config->parity) {
+ case SP_PARITY_NONE:
+ data->term.c_iflag |= IGNPAR;
+ break;
+ case SP_PARITY_EVEN:
+ data->term.c_cflag |= PARENB;
+ break;
+ case SP_PARITY_ODD:
+ data->term.c_cflag |= PARENB | PARODD;
+ break;
+ default:
+ return SP_ERR_ARG;
+ }
}
- term.c_iflag &= ~IGNPAR;
- term.c_cflag &= ~(PARENB | PARODD);
- switch (parity) {
- case SP_PARITY_NONE:
- term.c_iflag |= IGNPAR;
- break;
- case SP_PARITY_EVEN:
- term.c_cflag |= PARENB;
- break;
- case SP_PARITY_ODD:
- term.c_cflag |= PARENB | PARODD;
- break;
- default:
- return SP_ERR_ARG;
+ if (config->stopbits >= 0) {
+ data->term.c_cflag &= ~CSTOPB;
+ switch (config->stopbits) {
+ case 1:
+ data->term.c_cflag &= ~CSTOPB;
+ break;
+ case 2:
+ data->term.c_cflag |= CSTOPB;
+ break;
+ default:
+ return SP_ERR_ARG;
+ }
}
- /* Turn off all serial port cooking. */
- term.c_iflag &= ~(ISTRIP | INLCR | ICRNL);
- term.c_oflag &= ~(ONLCR | OCRNL | ONOCR);
-#if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__)
- term.c_oflag &= ~OFILL;
+ if (config->rts >= 0 || config->cts >= 0) {
+#ifdef USE_TERMIOX
+ data->flow &= ~(RTS_FLOW | CTS_FLOW);
+ switch (config->rts) {
+ case SP_RTS_OFF:
+ case SP_RTS_ON:
+ controlbits = TIOCM_RTS;
+ if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC,
+ &controlbits) < 0)
+ return SP_ERR_FAIL;
+ break;
+ case SP_RTS_FLOW_CONTROL:
+ data->flow |= RTS_FLOW;
+ break;
+ default:
+ break;
+ }
+ if (config->cts == SP_CTS_FLOW_CONTROL)
+ data->flow |= CTS_FLOW;
+
+ if (data->flow & (RTS_FLOW | CTS_FLOW))
+ data->term.c_iflag |= CRTSCTS;
+ else
+ data->term.c_iflag &= ~CRTSCTS;
+#else
+ /* Asymmetric use of RTS/CTS not supported. */
+ if (data->term.c_iflag & CRTSCTS) {
+ /* Flow control can only be disabled for both RTS & CTS together. */
+ if (config->rts >= 0 && config->rts != SP_RTS_FLOW_CONTROL) {
+ if (config->cts != SP_CTS_IGNORE)
+ return SP_ERR_ARG;
+ }
+ if (config->cts >= 0 && config->cts != SP_CTS_FLOW_CONTROL) {
+ if (config->rts <= 0 || config->rts == SP_RTS_FLOW_CONTROL)
+ return SP_ERR_ARG;
+ }
+ } else {
+ /* Flow control can only be enabled for both RTS & CTS together. */
+ if (((config->rts == SP_RTS_FLOW_CONTROL) && (config->cts != SP_CTS_FLOW_CONTROL)) ||
+ ((config->cts == SP_CTS_FLOW_CONTROL) && (config->rts != SP_RTS_FLOW_CONTROL)))
+ return SP_ERR_ARG;
+ }
+
+ if (config->rts >= 0) {
+ if (config->rts == SP_RTS_FLOW_CONTROL) {
+ data->term.c_iflag |= CRTSCTS;
+ } else {
+ controlbits = TIOCM_RTS;
+ if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC,
+ &controlbits) < 0)
+ return SP_ERR_FAIL;
+ }
+ }
#endif
+ }
- /* Disable canonical mode, and don't echo input characters. */
- term.c_lflag &= ~(ICANON | ECHO);
+ if (config->dtr >= 0 || config->dsr >= 0) {
+#ifdef USE_TERMIOX
+ data->flow &= ~(DTR_FLOW | DSR_FLOW);
+ switch (config->dtr) {
+ case SP_DTR_OFF:
+ case SP_DTR_ON:
+ controlbits = TIOCM_DTR;
+ if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC,
+ &controlbits) < 0)
+ return SP_ERR_FAIL;
+ break;
+ case SP_DTR_FLOW_CONTROL:
+ data->flow |= DTR_FLOW;
+ break;
+ default:
+ break;
+ }
+ if (config->dsr == SP_DSR_FLOW_CONTROL)
+ data->flow |= DSR_FLOW;
+#else
+ /* DTR/DSR flow control not supported. */
+ if (config->dtr == SP_DTR_FLOW_CONTROL || config->dsr == SP_DSR_FLOW_CONTROL)
+ return SP_ERR_ARG;
+
+ if (config->dtr >= 0) {
+ controlbits = TIOCM_DTR;
+ if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC,
+ &controlbits) < 0)
+ return SP_ERR_FAIL;
+ }
+#endif
+ }
- /* Ignore modem status lines; enable receiver */
- term.c_cflag |= (CLOCAL | CREAD);
+ if (config->xon_xoff >= 0) {
+ data->term.c_iflag &= ~(IXON | IXOFF | IXANY);
+ switch (config->xon_xoff) {
+ case SP_XONXOFF_DISABLED:
+ break;
+ case SP_XONXOFF_IN:
+ data->term.c_iflag |= IXOFF;
+ break;
+ case SP_XONXOFF_OUT:
+ data->term.c_iflag |= IXON | IXANY;
+ break;
+ case SP_XONXOFF_INOUT:
+ data->term.c_iflag |= IXON | IXOFF | IXANY;
+ break;
+ default:
+ return SP_ERR_ARG;
+ }
+ }
- /* Write the configured settings. */
- if (tcsetattr(port->fd, TCSADRAIN, &term) < 0)
+ if (tcsetattr(port->fd, TCSADRAIN, &data->term) < 0)
return SP_ERR_FAIL;
- if (rts != -1) {
- controlbits = TIOCM_RTS;
- if (ioctl(port->fd, rts ? TIOCMBIS : TIOCMBIC,
- &controlbits) < 0)
+#ifdef __APPLE__
+ if (baud_nonstd != B0) {
+ if (ioctl(port->fd, IOSSIOSPEED, &baud_nonstd) == -1)
return SP_ERR_FAIL;
- }
-
- if (dtr != -1) {
- controlbits = TIOCM_DTR;
- if (ioctl(port->fd, dtr ? TIOCMBIS : TIOCMBIC,
- &controlbits) < 0)
+ /* Set baud rates in data->term to correct, but incompatible
+ * with tcsetattr() value, same as delivered by tcgetattr(). */
+ if (cfsetspeed(&data->term, baud_nonstd) < 0)
return SP_ERR_FAIL;
}
+#elif defined(__linux__)
+ if (baud_nonstd)
+ TRY(set_baudrate(port->fd, config->baudrate));
+#ifdef USE_TERMIOX
+ TRY(set_flow(port->fd, data->flow));
#endif
+#endif
+
+#endif /* !_WIN32 */
+
+ return SP_OK;
+}
+
+enum sp_return sp_set_config(struct sp_port *port, const struct sp_port_config *config)
+{
+ struct port_data data;
+ struct sp_port_config prev_config;
+
+ CHECK_PORT();
+
+ if (!config)
+ return SP_ERR_ARG;
+
+ TRY(get_config(port, &data, &prev_config));
+ TRY(set_config(port, &data, config));
+
+ return SP_OK;
+}
+
+#define CREATE_SETTER(x, type) int sp_set_##x(struct sp_port *port, type x) { \
+ struct port_data data; \
+ struct sp_port_config config; \
+ CHECK_PORT(); \
+ TRY(get_config(port, &data, &config)); \
+ config.x = x; \
+ TRY(set_config(port, &data, &config)); \
+ return SP_OK; \
+}
+
+CREATE_SETTER(baudrate, int)
+CREATE_SETTER(bits, int)
+CREATE_SETTER(parity, enum sp_parity)
+CREATE_SETTER(stopbits, int)
+CREATE_SETTER(rts, enum sp_rts)
+CREATE_SETTER(cts, enum sp_cts)
+CREATE_SETTER(dtr, enum sp_dtr)
+CREATE_SETTER(dsr, enum sp_dsr)
+CREATE_SETTER(xon_xoff, enum sp_xonxoff)
+
+enum sp_return sp_set_flowcontrol(struct sp_port *port, enum sp_flowcontrol flowcontrol)
+{
+ struct port_data data;
+ struct sp_port_config config;
+
+ CHECK_PORT();
+
+ TRY(get_config(port, &data, &config));
+
+ if (flowcontrol == SP_FLOWCONTROL_XONXOFF)
+ config.xon_xoff = SP_XONXOFF_INOUT;
+ else
+ config.xon_xoff = SP_XONXOFF_DISABLED;
+
+ if (flowcontrol == SP_FLOWCONTROL_RTSCTS) {
+ config.rts = SP_RTS_FLOW_CONTROL;
+ config.cts = SP_CTS_FLOW_CONTROL;
+ } else {
+ if (config.rts == SP_RTS_FLOW_CONTROL)
+ config.rts = SP_RTS_ON;
+ config.cts = SP_CTS_IGNORE;
+ }
+
+ if (flowcontrol == SP_FLOWCONTROL_DTRDSR) {
+ config.dtr = SP_DTR_FLOW_CONTROL;
+ config.dsr = SP_DSR_FLOW_CONTROL;
+ } else {
+ if (config.dtr == SP_DTR_FLOW_CONTROL)
+ config.dtr = SP_DTR_ON;
+ config.dsr = SP_DSR_IGNORE;
+ }
+
+ TRY(set_config(port, &data, &config));
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