#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"
#else
struct termios term;
int controlbits;
+#ifdef USE_TERMIOX
+ int flow;
+#endif
#endif
};
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;
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;
return SP_OK;
}
-enum sp_return 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;
return SP_OK;
}
-#endif
+
+#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)
if (ioctl(port->fd, TIOCMGET, &data->controlbits) < 0)
return SP_ERR_FAIL;
+
+#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;
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)
}
if (config->rts >= 0 || config->cts >= 0) {
- /* Asymmetric use of RTS/CTS not supported yet. */
+#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) {
return SP_ERR_FAIL;
}
}
+#endif
}
if (config->dtr >= 0 || config->dsr >= 0) {
- /* DTR/DSR flow control not supported yet. */
+#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;
&controlbits) < 0)
return SP_ERR_FAIL;
}
+#endif
}
if (config->xon_xoff >= 0) {
#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 */
projects / libserialport.git / blobdiff