#include "libserialport.h"
+struct sp_port {
+ char *name;
+#ifdef _WIN32
+ HANDLE hdl;
+#else
+ int fd;
+#endif
+};
+
+struct sp_port_config {
+ int baudrate;
+ int bits;
+ enum sp_parity parity;
+ int stopbits;
+ enum sp_rts rts;
+ enum sp_cts cts;
+ enum sp_dtr dtr;
+ enum sp_dsr dsr;
+ enum sp_xonxoff xon_xoff;
+};
+
struct port_data {
#ifdef _WIN32
DCB dcb;
#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
#define NUM_STD_BAUDRATES ARRAY_SIZE(std_baudrates)
-#define TRY(x) do { int ret = x; if (ret != SP_OK) return ret; } while (0)
-
/* Debug output macros. */
#define DEBUG(fmt, ...) do { if (sp_debug_handler) sp_debug_handler(fmt ".\n", ##__VA_ARGS__); } while (0)
#define DEBUG_ERROR(err, msg) DEBUG("%s returning " #err ": " msg, __func__)
#define SET_FAIL(val, msg) do { DEBUG_FAIL(msg); val = err; } while (0)
#define TRACE(fmt, ...) DEBUG("%s(" fmt ") called", __func__, ##__VA_ARGS__)
+#define TRY(x) do { int ret = x; if (ret != SP_OK) RETURN_CODEVAL(ret); } while (0)
+
/* Helper functions. */
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,
RETURN_OK();
}
+char *sp_get_port_name(const struct sp_port *port)
+{
+ TRACE("%p", port);
+
+ if (!port)
+ return NULL;
+
+ RETURN_VALUE("%s", port->name);
+}
+
+enum sp_return sp_get_port_handle(const struct sp_port *port, void *result_ptr)
+{
+ TRACE("%p", port);
+
+ if (!port)
+ RETURN_ERROR(SP_ERR_ARG, "Null port");
+
+#ifdef _WIN32
+ HANDLE *handle_ptr = result_ptr;
+ *handle_ptr = port->hdl;
+#else
+ int *fd_ptr = result_ptr;
+ *fd_ptr = port->fd;
+#endif
+
+ RETURN_OK();
+}
+
enum sp_return sp_copy_port(const struct sp_port *port, struct sp_port **copy_ptr)
{
TRACE("%p, %p", port, copy_ptr);
enum sp_return sp_list_ports(struct sp_port ***list_ptr)
{
struct sp_port **list;
- int ret = SP_OK;
+ int ret = SP_ERR_SUPP;
TRACE("%p", list_ptr);
+ if (!list_ptr)
+ RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
+
DEBUG("Enumerating ports");
if (!(list = malloc(sizeof(struct sp_port **))))
char *name;
int name_len;
+ ret = SP_OK;
+
DEBUG("Opening registry key");
if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("HARDWARE\\DEVICEMAP\\SERIALCOMM"),
0, KEY_QUERY_VALUE, &key) != ERROR_SUCCESS) {
CFTypeRef cf_path;
Boolean result;
+ ret = SP_OK;
+
DEBUG("Getting IOKit master port");
if (IOMasterPort(MACH_PORT_NULL, &master) != KERN_SUCCESS) {
SET_FAIL(ret, "IOMasterPort() failed");
int fd, ioctl_result;
struct serial_struct serial_info;
+ ret = SP_OK;
+
DEBUG("Enumerating tty devices");
ud = udev_new();
ud_enumerate = udev_enumerate_new(ud);
udev_unref(ud);
#endif
- if (ret == SP_OK) {
+ switch (ret) {
+ case SP_OK:
*list_ptr = list;
RETURN_OK();
- } else {
+ case SP_ERR_SUPP:
+ DEBUG_ERROR(SP_ERR_SUPP, "Enumeration not supported on this platform.");
+ default:
if (list)
sp_free_port_list(list);
*list_ptr = NULL;
TRACE("%p", list);
+ if (!list) {
+ DEBUG("Null list");
+ RETURN();
+ }
+
DEBUG("Freeing port list");
for (i = 0; list[i]; i++)
RETURN();
}
-#ifdef _WIN32
#define CHECK_PORT() do { \
if (port == NULL) \
RETURN_ERROR(SP_ERR_ARG, "Null port"); \
+ if (port->name == NULL) \
+ RETURN_ERROR(SP_ERR_ARG, "Null port name"); \
+} while (0)
+#ifdef _WIN32
+#define CHECK_PORT_HANDLE() do { \
if (port->hdl == INVALID_HANDLE_VALUE) \
RETURN_ERROR(SP_ERR_ARG, "Invalid port handle"); \
-} while(0);
+} while (0)
#else
-#define CHECK_PORT() do { \
- if (port == NULL) \
- RETURN_ERROR(SP_ERR_ARG, "Null port"); \
+#define CHECK_PORT_HANDLE() do { \
if (port->fd < 0) \
RETURN_ERROR(SP_ERR_ARG, "Invalid port fd"); \
-} while(0);
+} while (0)
#endif
+#define CHECK_OPEN_PORT() do { \
+ CHECK_PORT(); \
+ CHECK_PORT_HANDLE(); \
+} while (0)
enum sp_return sp_open(struct sp_port *port, enum sp_mode flags)
{
TRACE("%p, %x", port, flags);
- if (!port)
- RETURN_ERROR(SP_ERR_ARG, "Null port");
+ CHECK_PORT();
+
+ if (flags > (SP_MODE_READ | SP_MODE_WRITE | SP_MODE_NONBLOCK))
+ RETURN_ERROR(SP_ERR_ARG, "Invalid flags");
DEBUG("Opening port %s", port->name);
{
TRACE("%p", port);
- CHECK_PORT();
+ CHECK_OPEN_PORT();
DEBUG("Closing port %s", port->name);
{
TRACE("%p, %x", port, buffers);
- CHECK_PORT();
+ CHECK_OPEN_PORT();
+
+ if (buffers > SP_BUF_BOTH)
+ RETURN_ERROR(SP_ERR_ARG, "Invalid buffer selection");
const char *buffer_names[] = {"input", "output", "both"};
{
TRACE("%p", port);
- CHECK_PORT();
+ CHECK_OPEN_PORT();
DEBUG("Draining port %s", port->name);
{
TRACE("%p, %p, %d", port, buf, count);
- CHECK_PORT();
+ CHECK_OPEN_PORT();
if (!buf)
RETURN_ERROR(SP_ERR_ARG, "Null buffer");
{
TRACE("%p, %p, %d", port, buf, count);
- CHECK_PORT();
+ CHECK_OPEN_PORT();
if (!buf)
RETURN_ERROR(SP_ERR_ARG, "Null buffer");
RETURN_OK();
}
+enum sp_return sp_new_config(struct sp_port_config **config_ptr)
+{
+ TRACE("%p", config_ptr);
+
+ if (!config_ptr)
+ RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
+
+ if (!(*config_ptr = malloc(sizeof(struct sp_port_config))))
+ RETURN_ERROR(SP_ERR_MEM, "config malloc failed");
+
+ RETURN_OK();
+}
+
+void sp_free_config(struct sp_port_config *config)
+{
+ TRACE("%p", config);
+
+ if (!config)
+ DEBUG("Null config");
+ else
+ free(config);
+
+ RETURN();
+}
+
+enum sp_return sp_get_config(struct sp_port *port, struct sp_port_config *config)
+{
+ struct port_data data;
+
+ TRACE("%p, %p", port, config);
+
+ CHECK_OPEN_PORT();
+
+ if (!config)
+ RETURN_ERROR(SP_ERR_ARG, "Null config");
+
+ TRY(get_config(port, &data, config));
+
+ RETURN_OK();
+}
+
enum sp_return sp_set_config(struct sp_port *port, const struct sp_port_config *config)
{
struct port_data data;
TRACE("%p, %p", port, config);
- CHECK_PORT();
+ CHECK_OPEN_PORT();
if (!config)
RETURN_ERROR(SP_ERR_ARG, "Null config");
RETURN_OK();
}
-#define CREATE_SETTER(x, type) int sp_set_##x(struct sp_port *port, type x) { \
+#define CREATE_ACCESSORS(x, type) \
+enum sp_return sp_set_##x(struct sp_port *port, type x) { \
struct port_data data; \
struct sp_port_config config; \
TRACE("%p, %d", port, x); \
- CHECK_PORT(); \
+ CHECK_OPEN_PORT(); \
TRY(get_config(port, &data, &config)); \
config.x = x; \
TRY(set_config(port, &data, &config)); \
RETURN_OK(); \
+} \
+enum sp_return sp_get_config_##x(const struct sp_port_config *config, type *x) { \
+ TRACE("%p", config); \
+ if (!config) \
+ RETURN_ERROR(SP_ERR_ARG, "Null config"); \
+ *x = config->x; \
+ RETURN_OK(); \
+} \
+enum sp_return sp_set_config_##x(struct sp_port_config *config, type x) { \
+ TRACE("%p, %d", config, x); \
+ if (!config) \
+ RETURN_ERROR(SP_ERR_ARG, "Null config"); \
+ config->x = x; \
+ RETURN_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)
+CREATE_ACCESSORS(baudrate, int)
+CREATE_ACCESSORS(bits, int)
+CREATE_ACCESSORS(parity, enum sp_parity)
+CREATE_ACCESSORS(stopbits, int)
+CREATE_ACCESSORS(rts, enum sp_rts)
+CREATE_ACCESSORS(cts, enum sp_cts)
+CREATE_ACCESSORS(dtr, enum sp_dtr)
+CREATE_ACCESSORS(dsr, enum sp_dsr)
+CREATE_ACCESSORS(xon_xoff, enum sp_xonxoff)
+
+enum sp_return sp_set_config_flowcontrol(struct sp_port_config *config, enum sp_flowcontrol flowcontrol)
{
- struct port_data data;
- struct sp_port_config config;
-
- TRACE("%p, %d", port, flowcontrol);
-
- CHECK_PORT();
+ if (!config)
+ RETURN_ERROR(SP_ERR_ARG, "Null configuration");
- TRY(get_config(port, &data, &config));
+ if (flowcontrol > SP_FLOWCONTROL_DTRDSR)
+ RETURN_ERROR(SP_ERR_ARG, "Invalid flow control setting");
if (flowcontrol == SP_FLOWCONTROL_XONXOFF)
- config.xon_xoff = SP_XONXOFF_INOUT;
+ config->xon_xoff = SP_XONXOFF_INOUT;
else
- config.xon_xoff = SP_XONXOFF_DISABLED;
+ config->xon_xoff = SP_XONXOFF_DISABLED;
if (flowcontrol == SP_FLOWCONTROL_RTSCTS) {
- config.rts = SP_RTS_FLOW_CONTROL;
- config.cts = SP_CTS_FLOW_CONTROL;
+ 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 (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;
+ 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;
+ if (config->dtr == SP_DTR_FLOW_CONTROL)
+ config->dtr = SP_DTR_ON;
+ config->dsr = SP_DSR_IGNORE;
}
+ RETURN_OK();
+}
+
+enum sp_return sp_set_flowcontrol(struct sp_port *port, enum sp_flowcontrol flowcontrol)
+{
+ struct port_data data;
+ struct sp_port_config config;
+
+ TRACE("%p, %d", port, flowcontrol);
+
+ CHECK_OPEN_PORT();
+
+ TRY(get_config(port, &data, &config));
+
+ TRY(sp_set_config_flowcontrol(&config, flowcontrol));
+
TRY(set_config(port, &data, &config));
RETURN_OK();
{
TRACE("%p, %p", port, signals);
- CHECK_PORT();
+ CHECK_OPEN_PORT();
if (!signals)
RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
*signals |= SP_SIG_CTS;
if (bits & MS_DSR_ON)
*signals |= SP_SIG_DSR;
- if (bits & MS_RING_ON)
- *signals |= SP_SIG_DCD;
if (bits & MS_RLSD_ON)
+ *signals |= SP_SIG_DCD;
+ if (bits & MS_RING_ON)
*signals |= SP_SIG_RI;
#else
int bits;
{
TRACE("%p", port);
- CHECK_PORT();
+ CHECK_OPEN_PORT();
#ifdef _WIN32
if (SetCommBreak(port->hdl) == 0)
RETURN_FAIL("SetCommBreak() failed");
{
TRACE("%p", port);
- CHECK_PORT();
+ CHECK_OPEN_PORT();
#ifdef _WIN32
if (ClearCommBreak(port->hdl) == 0)
RETURN_FAIL("ClearCommBreak() failed");
projects / libserialport.git / blobdiff