/*
* This file is part of the sigrok project.
*
- * Copyright (C) 2010 Bert Vermeulen <bert@biot.com>
+ * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#ifdef _WIN32
+#include <windows.h>
+#else
#include <glob.h>
+#include <termios.h>
+#endif
+#include <stdlib.h>
#include <glib.h>
+#include "sigrok.h"
+#include "sigrok-internal.h"
+// FIXME: Must be moved, or rather passed as function argument.
+#ifdef _WIN32
+static HANDLE hdl;
+#endif
-char *serial_port_glob[] = {
+static const char *serial_port_glob[] = {
/* Linux */
"/dev/ttyS*",
"/dev/ttyUSB*",
"/dev/ttys*",
"/dev/tty.USB-*",
"/dev/tty.Modem-*",
- NULL
+ NULL,
};
-
-GSList *list_serial_ports(void)
+SR_PRIV GSList *list_serial_ports(void)
{
- glob_t g;
GSList *ports;
- int i, j;
+
+#ifdef _WIN32
+ /* TODO */
+ ports = NULL;
+ ports = g_slist_append(ports, g_strdup("COM1"));
+#else
+ glob_t g;
+ unsigned int i, j;
ports = NULL;
- for(i = 0; serial_port_glob[i]; i++)
- {
- if(!glob(serial_port_glob[i], 0, NULL, &g))
- {
- for(j = 0; j < g.gl_pathc; j++)
- ports = g_slist_append(ports, g_strdup(g.gl_pathv[j]));
- globfree(&g);
- }
+ for (i = 0; serial_port_glob[i]; i++) {
+ if (glob(serial_port_glob[i], 0, NULL, &g))
+ continue;
+ for (j = 0; j < g.gl_pathc; j++)
+ ports = g_slist_append(ports, g_strdup(g.gl_pathv[j]));
+ globfree(&g);
}
+#endif
return ports;
}
+SR_PRIV int serial_open(const char *pathname, int flags)
+{
+#ifdef _WIN32
+ /* FIXME: Don't hardcode COM1. */
+ hdl = CreateFile("COM1", GENERIC_READ | GENERIC_WRITE, 0, 0,
+ OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
+ if (hdl == INVALID_HANDLE_VALUE) {
+ /* TODO: Error handling. */
+ }
+ return 0;
+#else
+ return open(pathname, flags);
+#endif
+}
+
+/*
+ * Close the serial port.
+ * Returns 0 upon success, -1 upon failure.
+ */
+SR_PRIV int serial_close(int fd)
+{
+#ifdef _WIN32
+ /* Returns non-zero upon success, 0 upon failure. */
+ return (CloseHandle(hdl) == 0) ? -1 : 0;
+#else
+ /* Returns 0 upon success, -1 upon failure. */
+ return close(fd);
+#endif
+}
+
+/*
+ * Flush serial port buffers (if any).
+ * Returns 0 upon success, -1 upon failure.
+ */
+SR_PRIV int serial_flush(int fd)
+{
+#ifdef _WIN32
+ /* Returns non-zero upon success, 0 upon failure. */
+ return (PurgeComm(hdl, PURGE_RXCLEAR | PURGE_TXCLEAR) == 0) ? -1 : 0;
+#else
+ /* Returns 0 upon success, -1 upon failure. */
+ return tcflush(fd, TCIOFLUSH);
+#endif
+}
+
+/*
+ * Write a number of bytes to the specified serial port.
+ * Returns the number of bytes written, or -1 upon failure.
+ */
+SR_PRIV int serial_write(int fd, const void *buf, size_t count)
+{
+#ifdef _WIN32
+ DWORD tmp = 0;
+
+ /* FIXME */
+ /* Returns non-zero upon success, 0 upon failure. */
+ WriteFile(hdl, buf, count, &tmp, NULL);
+#else
+ /* Returns the number of bytes written, or -1 upon failure. */
+ return write(fd, buf, count);
+#endif
+}
+
+/*
+ * Read a number of bytes from the specified serial port.
+ * Returns the number of bytes read, or -1 upon failure.
+ */
+SR_PRIV int serial_read(int fd, void *buf, size_t count)
+{
+#ifdef _WIN32
+ DWORD tmp = 0;
+
+ /* FIXME */
+ /* Returns non-zero upon success, 0 upon failure. */
+ return ReadFile(hdl, buf, count, &tmp, NULL);
+#else
+ /* Returns the number of bytes read, or -1 upon failure. */
+ return read(fd, buf, count);
+#endif
+}
+
+SR_PRIV void *serial_backup_params(int fd)
+{
+#ifdef _WIN32
+ /* TODO */
+#else
+ struct termios *term;
+
+ /* TODO: 'term' is never g_free()'d? */
+ if (!(term = g_try_malloc(sizeof(struct termios)))) {
+ sr_err("serial: %s: term malloc failed", __func__);
+ return NULL;
+ }
+
+ tcgetattr(fd, term);
+
+ return term;
+#endif
+}
+
+SR_PRIV void serial_restore_params(int fd, void *backup)
+{
+#ifdef _WIN32
+ /* TODO */
+#else
+ tcsetattr(fd, TCSADRAIN, (struct termios *)backup);
+#endif
+}
+
+/*
+ * Set serial parameters.
+ *
+ * flowcontrol: 1 = rts/cts, 2 = xon/xoff
+ * parity: 0 = none, 1 = even, 2 = odd
+ */
+SR_PRIV int serial_set_params(int fd, int speed, int bits, int parity,
+ int stopbits, int flowcontrol)
+{
+#ifdef _WIN32
+ DCB dcb;
+
+ if (!GetCommState(hdl, &dcb)) {
+ /* TODO: Error handling. */
+ return SR_ERR;
+ }
+
+ /* TODO: Rename 'speed' to 'baudrate'. */
+ switch(speed) {
+ /* TODO: Support for higher baud rates. */
+ case 115200:
+ dcb.BaudRate = CBR_115200;
+ break;
+ case 57600:
+ dcb.BaudRate = CBR_57600;
+ break;
+ case 38400:
+ dcb.BaudRate = CBR_38400;
+ break;
+ case 19200:
+ dcb.BaudRate = CBR_19200;
+ break;
+ case 9600:
+ dcb.BaudRate = CBR_9600;
+ break;
+ default:
+ /* TODO: Error handling. */
+ break;
+ }
+ dcb.ByteSize = bits;
+ dcb.Parity = NOPARITY; /* TODO: Don't hardcode. */
+ dcb.StopBits = ONESTOPBIT; /* TODO: Don't hardcode. */
+
+ if (!SetCommState(hdl, &dcb)) {
+ /* TODO: Error handling. */
+ return SR_ERR;
+ }
+#else
+ struct termios term;
+ speed_t baud;
+
+ switch (speed) {
+ case 9600:
+ baud = B9600;
+ break;
+ case 38400:
+ baud = B38400;
+ break;
+ case 57600:
+ baud = B57600;
+ break;
+ case 115200:
+ baud = B115200;
+ break;
+#ifndef __APPLE__
+ case 460800:
+ baud = B460800;
+ break;
+#endif
+ default:
+ return SR_ERR;
+ }
+
+ if (tcgetattr(fd, &term) < 0)
+ return SR_ERR;
+ if (cfsetispeed(&term, baud) < 0)
+ return SR_ERR;
+
+ term.c_cflag &= ~CSIZE;
+ switch (bits) {
+ case 8:
+ term.c_cflag |= CS8;
+ break;
+ case 7:
+ term.c_cflag |= CS7;
+ break;
+ default:
+ return SR_ERR;
+ }
+ term.c_cflag &= ~CSTOPB;
+ switch (stopbits) {
+ case 1:
+ break;
+ case 2:
+ term.c_cflag |= CSTOPB;
+ default:
+ return SR_ERR;
+ }
+
+ term.c_cflag &= ~(IXON | IXOFF | CRTSCTS);
+ switch (flowcontrol) {
+ case 2:
+ term.c_cflag |= IXON | IXOFF;
+ break;
+ case 1:
+ term.c_cflag |= CRTSCTS;
+ default:
+ return SR_ERR;
+ }
+
+ term.c_iflag &= ~IGNPAR;
+ term.c_cflag &= ~(PARODD | PARENB);
+ switch (parity) {
+ case 0:
+ term.c_iflag |= IGNPAR;
+ break;
+ case 1:
+ term.c_cflag |= PARENB;
+ break;
+ case 2:
+ term.c_cflag |= PARENB | PARODD;
+ break;
+ default:
+ return SR_ERR;
+ }
+
+ if (tcsetattr(fd, TCSADRAIN, &term) < 0)
+ return SR_ERR;
+#endif
+
+ return SR_OK;
+}
projects / libsigrok.git / blobdiff