#ifdef _WIN32
#include <windows.h>
#include <tchar.h>
+#include <stdio.h>
#else
#include <termios.h>
#include <sys/ioctl.h>
#include "libserialport.h"
+struct sp_port_data {
+#ifdef _WIN32
+ DCB dcb;
+#else
+ struct termios term;
+ int controlbits;
+#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)
+
+/* Helper functions for configuring ports. */
+static int get_config(struct sp_port *port, struct sp_port_data *data, struct sp_port_config *config);
+static int set_config(struct sp_port *port, struct sp_port_data *data, struct sp_port_config *config);
+
int sp_get_port_by_name(const char *portname, struct sp_port **port_ptr)
{
struct sp_port *port;
{
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;
int ret = SP_OK;
if (!(list = malloc(sizeof(struct sp_port **))))
- return SP_ERR_MEM;;
+ return SP_ERR_MEM;
list[0] = NULL;
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);
return SP_ERR_FAIL;
#else
int flags_local = 0;
+ struct sp_port_data data;
+ struct sp_port_config config;
+ int ret;
+
/* Map 'flags' to the OS-specific settings. */
if (flags & SP_MODE_RDWR)
flags_local |= O_RDWR;
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;
#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
}
#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
}
-int sp_set_params(struct sp_port *port, int baudrate,
- int bits, int parity, int stopbits,
- int flowcontrol, int rts, int dtr)
+static int get_config(struct sp_port *port, struct sp_port_data *data, struct sp_port_config *config)
{
- CHECK_PORT();
+ unsigned int i;
#ifdef _WIN32
- DCB dcb;
-
- if (!GetCommState(port->hdl, &dcb))
+ if (!GetCommState(port->hdl, &data->dcb))
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? */
- break;
- case 256000:
- dcb.BaudRate = CBR_256000; /* Not available on Unix? */
- break;
- default:
- return SP_ERR_ARG;
+ for (i = 0; i < NUM_STD_BAUDRATES; i++) {
+ if (data->dcb.BaudRate == std_baudrates[i].index) {
+ config->baudrate = std_baudrates[i].value;
+ break;
+ }
}
- switch (stopbits) {
- /* Note: There's also ONE5STOPBITS == 1.5 (unneeded so far). */
- case 1:
- dcb.StopBits = ONESTOPBIT;
+ 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 2:
- dcb.StopBits = TWOSTOPBITS;
+ case TWOSTOPBITS:
+ config->stopbits = 2;
break;
default:
- return SP_ERR_ARG;
+ config->stopbits = -1;
}
- switch (parity) {
- /* Note: There's also SPACEPARITY, MARKPARITY (unneeded so far). */
- case SP_PARITY_NONE:
- dcb.Parity = NOPARITY;
- break;
- case SP_PARITY_EVEN:
- dcb.Parity = EVENPARITY;
- break;
- case SP_PARITY_ODD:
- dcb.Parity = ODDPARITY;
- break;
- default:
- return SP_ERR_ARG;
+ 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 RTS_CONTROL_HANDSHAKE:
+ config->rts = SP_RTS_FLOW_CONTROL;
+ break;
+ default:
+ config->rts = -1;
}
- if (rts != -1) {
- if (rts)
- dcb.fRtsControl = RTS_CONTROL_ENABLE;
- else
- dcb.fRtsControl = RTS_CONTROL_DISABLE;
+ 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 DTR_CONTROL_ENABLE:
+ config->dtr = SP_DTR_ON;
+ break;
+ case DTR_CONTROL_HANDSHAKE:
+ config->dtr = SP_DTR_FLOW_CONTROL;
+ break;
+ default:
+ config->dtr = -1;
}
- if (dtr != -1) {
- if (dtr)
- dcb.fDtrControl = DTR_CONTROL_ENABLE;
+ config->dsr = data->dcb.fOutxDsrFlow ? SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
+
+ if (data->dcb.fInX) {
+ if (data->dcb.fOutX)
+ config->xon_xoff = SP_XONXOFF_INOUT;
+ else
+ config->xon_xoff = SP_XONXOFF_IN;
+ } else {
+ if (data->dcb.fOutX)
+ config->xon_xoff = SP_XONXOFF_OUT;
else
- dcb.fDtrControl = DTR_CONTROL_DISABLE;
+ 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;
+ for (i = 0; i < NUM_STD_BAUDRATES; i++) {
+ if (cfgetispeed(&data->term) == std_baudrates[i].index) {
+ config->baudrate = std_baudrates[i].value;
+ break;
+ }
+ }
- 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;
+ if (i == NUM_STD_BAUDRATES)
+ config->baudrate = -1;
+
+ 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;
- if (cfsetispeed(&term, baud) < 0)
- return SP_ERR_FAIL;
+ config->stopbits = (data->term.c_cflag & CSTOPB) ? 2 : 1;
- 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;
+ if (data->term.c_cflag & CRTSCTS) {
+ config->rts = SP_RTS_FLOW_CONTROL;
+ config->cts = SP_CTS_FLOW_CONTROL;
+ } else {
+ config->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF;
+ config->cts = SP_CTS_IGNORE;
}
- 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;
+ config->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF;
+ config->dsr = SP_DSR_IGNORE;
+#endif
+
+ return SP_OK;
+}
+
+static int set_config(struct sp_port *port, struct sp_port_data *data, struct sp_port_config *config)
+{
+ unsigned int i;
+
+#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;
}
- 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->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;
+ }
}
- 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) {
+ 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;
+ }
}
- /* 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;
-#endif
+ 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;
+ }
+ }
- /* Disable canonical mode, and don't echo input characters. */
- term.c_lflag &= ~(ICANON | ECHO);
+ 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;
+ }
+ }
- /* Ignore modem status lines; enable receiver */
- term.c_cflag |= (CLOCAL | CREAD);
+ 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;
+ }
+ }
- /* Write the configured settings. */
- if (tcsetattr(port->fd, TCSADRAIN, &term) < 0)
+ 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;
- if (rts != -1) {
- controlbits = TIOCM_RTS;
- if (ioctl(port->fd, rts ? TIOCMBIS : TIOCMBIC,
- &controlbits) < 0)
- return SP_ERR_FAIL;
+#else // !_WIN32
+
+ 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;
+ }
+ }
+
+ if (i == NUM_STD_BAUDRATES)
+ 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;
+ default:
+ return SP_ERR_ARG;
+ }
}
- if (dtr != -1) {
- controlbits = TIOCM_DTR;
- if (ioctl(port->fd, dtr ? TIOCMBIS : TIOCMBIC,
- &controlbits) < 0)
- return SP_ERR_FAIL;
+ 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;
+ }
+ }
+
+ 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;
+ }
+ }
+
+ if (config->rts >= 0 || config->cts >= 0)
+ {
+ /* Asymmetric use of RTS/CTS not supported yet. */
+
+ 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 {
+ int controlbits = TIOCM_RTS;
+ if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC,
+ &controlbits) < 0)
+ return SP_ERR_FAIL;
+ }
+ }
+ }
+
+ if (config->dtr >= 0 || config->dsr >= 0)
+ {
+ /* DTR/DSR flow control not supported yet. */
+ if (config->dtr == SP_DTR_FLOW_CONTROL || config->dsr == SP_DSR_FLOW_CONTROL)
+ return SP_ERR_ARG;
+
+ if (config->dtr >= 0) {
+ int controlbits = TIOCM_DTR;
+ if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC,
+ &controlbits) < 0)
+ return SP_ERR_FAIL;
+ }
}
+
+ 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;
+ }
+ }
+
+ if (tcsetattr(port->fd, TCSADRAIN, &data->term) < 0)
+ return SP_ERR_FAIL;
#endif
return SP_OK;
}
+#define TRY(x) do { int ret = x; if (ret != SP_OK) return ret; } while (0)
+
+int sp_set_config(struct sp_port *port, struct sp_port_config *config)
+{
+ struct sp_port_data data;
+ struct sp_port_config prev_config;
+
+ TRY(get_config(port, &data, &prev_config));
+ TRY(set_config(port, &data, config));
+
+ return SP_OK;
+}
+
+#define CREATE_SETTER(x) int sp_set_##x(struct sp_port *port, int x) { \
+ struct sp_port_data data; \
+ struct sp_port_config config; \
+ TRY(get_config(port, &data, &config)); \
+ config.x = x; \
+ TRY(set_config(port, &data, &config)); \
+ return SP_OK; \
+}
+
+CREATE_SETTER(baudrate)
+CREATE_SETTER(bits)
+CREATE_SETTER(parity)
+CREATE_SETTER(stopbits)
+CREATE_SETTER(rts)
+CREATE_SETTER(cts)
+CREATE_SETTER(dtr)
+CREATE_SETTER(dsr)
+CREATE_SETTER(xon_xoff)
+
+int sp_set_flowcontrol(struct sp_port *port, int flowcontrol)
+{
+ struct sp_port_data data;
+ struct sp_port_config config;
+
+ 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;
+}
+
int sp_last_error_code(void)
{
#ifdef _WIN32
projects / libserialport.git / blobdiff