diff options
Diffstat (limited to 'Source/serial.cpp')
| -rwxr-xr-x | Source/serial.cpp | 905 |
1 files changed, 0 insertions, 905 deletions
diff --git a/Source/serial.cpp b/Source/serial.cpp deleted file mode 100755 index 67e9be3..0000000 --- a/Source/serial.cpp +++ /dev/null @@ -1,905 +0,0 @@ -/* Serial port object for use with wxWidgets - * Copyright 2010, Paul Stoffregen (paul@pjrc.com) - * Modified by: Leonardo Laguna Ruiz - * - * 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 - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - - -#include "serial.h" - - -#if defined(LINUX) - #include <sys/types.h> - #include <fcntl.h> - #include <errno.h> - #include <sys/select.h> - #include <termios.h> - #include <unistd.h> - #include <dirent.h> - #include <sys/stat.h> - #include <sys/ioctl.h> - #include <linux/serial.h> - #include <errno.h> - #include <stdio.h> - #include <string.h> -#elif defined(MACOSX) - #include <stdio.h> - #include <string.h> - #include <unistd.h> - #include <fcntl.h> - #include <sys/ioctl.h> - #include <errno.h> - #include <paths.h> - #include <termios.h> - #include <sysexits.h> - #include <sys/param.h> - #include <sys/select.h> - #include <sys/time.h> - #include <time.h> - #include <CoreFoundation/CoreFoundation.h> - #include <IOKit/IOKitLib.h> - #include <IOKit/serial/IOSerialKeys.h> - #include <IOKit/IOBSD.h> -#elif defined(WINDOWS) - #include <windows.h> - #define win32_err(s) FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, \ - GetLastError(), 0, (s), sizeof(s), NULL) - #define QUERYDOSDEVICE_BUFFER_SIZE 262144 - #if _MSC_VER - #define snprintf _snprintf_s - #endif -#else - #error "This platform is unsupported, sorry" -#endif - - - - -Serial::Serial() -{ - port_is_open = 0; - baud_rate = 38400; // default baud rate -} - -Serial::~Serial() -{ - Close(); -} - - - -// Open a port, by name. Return 0 on success, non-zero for error -int Serial::Open(const string& name) -{ - Close(); -#if defined(LINUX) - struct serial_struct kernel_serial_settings; - int bits; - port_fd = open(name.c_str(), O_RDWR | O_NOCTTY | O_NONBLOCK); - if (port_fd < 0) { - if (errno == EACCES) { - error_msg = "Unable to access " + name + ", insufficient permission"; - // TODO: we could look at the permission bits and owner - // to make a better message here - } else if (errno == EISDIR) { - error_msg = "Unable to open " + name + - ", Object is a directory, not a serial port"; - } else if (errno == ENODEV || errno == ENXIO) { - error_msg = "Unable to open " + name + - ", Serial port hardware not installed"; - } else if (errno == ENOENT) { - error_msg = "Unable to open " + name + - ", Device name does not exist"; - } else { - error_msg = "Unable to open " + name + - ", " + strerror(errno); - } - return -1; - } - if (ioctl(port_fd, TIOCMGET, &bits) < 0) { - close(port_fd); - error_msg = "Unable to query serial port signals"; - return -1; - } - bits &= ~(TIOCM_DTR | TIOCM_RTS); - if (ioctl(port_fd, TIOCMSET, &bits) < 0) { - close(port_fd); - error_msg = "Unable to control serial port signals"; - return -1; - } - if (tcgetattr(port_fd, &settings_orig) != 0) { - close(port_fd); - error_msg = "Unable to query serial port settings (perhaps not a serial port)"; - return -1; - } - memset(&settings, 0, sizeof(settings)); - settings.c_iflag = IGNBRK | IGNPAR; - settings.c_cflag = CS8 | CREAD | HUPCL | CLOCAL; - Set_baud(baud_rate); - if (ioctl(port_fd, TIOCGSERIAL, &kernel_serial_settings) == 0) { - kernel_serial_settings.flags |= ASYNC_LOW_LATENCY; - ioctl(port_fd, TIOCSSERIAL, &kernel_serial_settings); - } - tcflush(port_fd, TCIFLUSH); -#elif defined(MACOSX) - int bits; - port_fd = open(name.c_str(), O_RDWR | O_NOCTTY | O_NONBLOCK); - if (port_fd < 0) { - error_msg = "Unable to open " + name + ", " + strerror(errno); - return -1; - } - if (ioctl(port_fd, TIOCEXCL) == -1) { - close(port_fd); - error_msg = "Unable to get exclussive access to port " + name; - return -1; - } - if (ioctl(port_fd, TIOCMGET, &bits) < 0) { - close(port_fd); - error_msg = "Unable to query serial port signals on " + name; - return -1; - } - bits &= ~(TIOCM_DTR | TIOCM_RTS); - if (ioctl(port_fd, TIOCMSET, &bits) < 0) { - close(port_fd); - error_msg = "Unable to control serial port signals on " + name; - return -1; - } - if (tcgetattr(port_fd, &settings_orig) < 0) { - close(port_fd); - error_msg = "Unable to access baud rate on port " + name; - return -1; - } - memset(&settings, 0, sizeof(settings)); - settings.c_cflag = CS8 | CLOCAL | CREAD | HUPCL; - settings.c_iflag = IGNBRK | IGNPAR; - Set_baud(baud_rate); - tcflush(port_fd, TCIFLUSH); -#elif defined(WINDOWS) - COMMCONFIG cfg; - COMMTIMEOUTS timeouts; - int got_default_cfg=0, port_num; - char buf[1024], name_createfile[64], name_commconfig[64], *p; - DWORD len; - - snprintf(buf, sizeof(buf), "%s", name.c_str()); - p = strstr(buf, "COM"); - if (p && sscanf(p + 3, "%d", &port_num) == 1) { - //printf("port_num = %d\n", port_num); - snprintf(name_createfile, sizeof(name_createfile), "\\\\.\\COM%d", port_num); - snprintf(name_commconfig, sizeof(name_commconfig), "COM%d", port_num); - } else { - snprintf(name_createfile, sizeof(name_createfile), "%s", name.c_str()); - snprintf(name_commconfig, sizeof(name_commconfig), "%s", name.c_str()); - } - len = sizeof(COMMCONFIG); - if (GetDefaultCommConfig(name_commconfig, &cfg, &len)) { - // this prevents unintentionally raising DTR when opening - // might only work on COM1 to COM9 - got_default_cfg = 1; - memcpy(&port_cfg_orig, &cfg, sizeof(COMMCONFIG)); - cfg.dcb.fDtrControl = DTR_CONTROL_DISABLE; - cfg.dcb.fRtsControl = RTS_CONTROL_DISABLE; - SetDefaultCommConfig(name_commconfig, &cfg, sizeof(COMMCONFIG)); - } else { - printf("error with GetDefaultCommConfig\n"); - } - port_handle = CreateFile(name_createfile, GENERIC_READ | GENERIC_WRITE, - 0, 0, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL); - if (port_handle == INVALID_HANDLE_VALUE) { - win32_err(buf); - error_msg = "Unable to open " + name + ", " + buf; - return -1; - } - len = sizeof(COMMCONFIG); - if (!GetCommConfig(port_handle, &port_cfg, &len)) { - CloseHandle(port_handle); - win32_err(buf); - error_msg = "Unable to read communication config on " + name + ", " + buf; - return -1; - } - if (!got_default_cfg) { - memcpy(&port_cfg_orig, &port_cfg, sizeof(COMMCONFIG)); - } - // http://msdn2.microsoft.com/en-us/library/aa363188(VS.85).aspx - port_cfg.dcb.BaudRate = baud_rate; - port_cfg.dcb.fBinary = TRUE; - port_cfg.dcb.fParity = FALSE; - port_cfg.dcb.fOutxCtsFlow = FALSE; - port_cfg.dcb.fOutxDsrFlow = FALSE; - port_cfg.dcb.fDtrControl = DTR_CONTROL_ENABLE; - port_cfg.dcb.fDsrSensitivity = FALSE; - port_cfg.dcb.fTXContinueOnXoff = TRUE; // ??? - port_cfg.dcb.fOutX = FALSE; - port_cfg.dcb.fInX = FALSE; - port_cfg.dcb.fErrorChar = FALSE; - port_cfg.dcb.fNull = FALSE; - port_cfg.dcb.fRtsControl = RTS_CONTROL_DISABLE; - port_cfg.dcb.fAbortOnError = FALSE; - port_cfg.dcb.ByteSize = 8; - port_cfg.dcb.Parity = NOPARITY; - port_cfg.dcb.StopBits = ONESTOPBIT; - if (!SetCommConfig(port_handle, &port_cfg, sizeof(COMMCONFIG))) { - CloseHandle(port_handle); - win32_err(buf); - error_msg = "Unable to write communication config to " + name + ", " + buf; - return -1; - } - if (!EscapeCommFunction(port_handle, CLRDTR | CLRRTS)) { - CloseHandle(port_handle); - win32_err(buf); - error_msg = "Unable to control serial port signals on " + name + ", " + buf; - return -1; - } - // http://msdn2.microsoft.com/en-us/library/aa363190(VS.85).aspx - // setting to all zeros means timeouts are not used - //timeouts.ReadIntervalTimeout = 0; - timeouts.ReadIntervalTimeout = MAXDWORD; - timeouts.ReadTotalTimeoutMultiplier = 0; - timeouts.ReadTotalTimeoutConstant = 0; - timeouts.WriteTotalTimeoutMultiplier = 0; - timeouts.WriteTotalTimeoutConstant = 0; - if (!SetCommTimeouts(port_handle, &timeouts)) { - CloseHandle(port_handle); - win32_err(buf); - error_msg = "Unable to write timeout settings to " + name + ", " + buf; - return -1; - } -#endif - port_name = name; - port_is_open = 1; - return 0; -} - -string Serial::get_name(void) -{ - if (!port_is_open) return ""; - return port_name; -} - - - -// Return the last error message in a (hopefully) user friendly format -string Serial::error_message(void) -{ - return error_msg; -} - -int Serial::Is_open(void) -{ - return port_is_open; -} - -// Close the port -void Serial::Close(void) -{ - if (!port_is_open) return; - Output_flush(); - Input_discard(); - port_is_open = 0; - port_name = ""; -#if defined(LINUX) || defined(MACOSX) - tcsetattr(port_fd, TCSANOW, &settings_orig); - close(port_fd); -#elif defined(WINDOWS) - //SetCommConfig(port_handle, &port_cfg_orig, sizeof(COMMCONFIG)); - CloseHandle(port_handle); -#endif -} - - - - - - -// set the baud rate -int Serial::Set_baud(int baud) -{ - if (baud <= 0) return -1; - //printf("set_baud: %d\n", baud); - baud_rate = baud; - if (!port_is_open) return -1; -#if defined(LINUX) - speed_t spd; - switch (baud) { - case 230400: spd = B230400; break; - case 115200: spd = B115200; break; - case 57600: spd = B57600; break; - case 38400: spd = B38400; break; - case 19200: spd = B19200; break; - case 9600: spd = B9600; break; - case 4800: spd = B4800; break; - case 2400: spd = B2400; break; - case 1800: spd = B1800; break; - case 1200: spd = B1200; break; - case 600: spd = B600; break; - case 300: spd = B300; break; - case 200: spd = B200; break; - case 150: spd = B150; break; - case 134: spd = B134; break; - case 110: spd = B110; break; - case 75: spd = B75; break; - case 50: spd = B50; break; - #ifdef B460800 - case 460800: spd = B460800; break; - #endif - #ifdef B500000 - case 500000: spd = B500000; break; - #endif - #ifdef B576000 - case 576000: spd = B576000; break; - #endif - #ifdef B921600 - case 921600: spd = B921600; break; - #endif - #ifdef B1000000 - case 1000000: spd = B1000000; break; - #endif - #ifdef B1152000 - case 1152000: spd = B1152000; break; - #endif - #ifdef B1500000 - case 1500000: spd = B1500000; break; - #endif - #ifdef B2000000 - case 2000000: spd = B2000000; break; - #endif - #ifdef B2500000 - case 2500000: spd = B2500000; break; - #endif - #ifdef B3000000 - case 3000000: spd = B3000000; break; - #endif - #ifdef B3500000 - case 3500000: spd = B3500000; break; - #endif - #ifdef B4000000 - case 4000000: spd = B4000000; break; - #endif - #ifdef B7200 - case 7200: spd = B7200; break; - #endif - #ifdef B14400 - case 14400: spd = B14400; break; - #endif - #ifdef B28800 - case 28800: spd = B28800; break; - #endif - #ifdef B76800 - case 76800: spd = B76800; break; - #endif - default: { - return -1; - } - } - cfsetospeed(&settings, spd); - cfsetispeed(&settings, spd); - if (tcsetattr(port_fd, TCSANOW, &settings) < 0) return -1; -#elif defined(MACOSX) - cfsetospeed(&settings, (speed_t)baud); - cfsetispeed(&settings, (speed_t)baud); - if (tcsetattr(port_fd, TCSANOW, &settings) < 0) return -1; -#elif defined(WINDOWS) - DWORD len = sizeof(COMMCONFIG); - port_cfg.dcb.BaudRate = baud; - SetCommConfig(port_handle, &port_cfg, len); -#endif - return 0; -} - -int Serial::Set_baud(const string& baud_str) -{ - unsigned long b; - b = atoi(baud_str.c_str()); - if (!b) return -1; - return Set_baud((int)b); -} - - -// Read from the serial port. Returns only the bytes that are -// already received, up to count. This always returns without delay, -// returning 0 if nothing has been received -int Serial::Read(void *ptr, int count) -{ - if (!port_is_open) return -1; - if (count <= 0) return 0; -#if defined(LINUX) - int n, bits; - n = read(port_fd, ptr, count); - if (n < 0 && (errno == EAGAIN || errno == EINTR)) return 0; - if (n == 0 && ioctl(port_fd, TIOCMGET, &bits) < 0) return -99; - return n; -#elif defined(MACOSX) - int n; - n = read(port_fd, ptr, count); - if (n < 0 && (errno == EAGAIN || errno == EINTR)) return 0; - return n; -#elif defined(WINDOWS) - // first, we'll find out how many bytes have been received - // and are currently waiting for us in the receive buffer. - // http://msdn.microsoft.com/en-us/library/ms885167.aspx - // http://msdn.microsoft.com/en-us/library/ms885173.aspx - // http://source.winehq.org/WineAPI/ClearCommError.html - COMSTAT st; - DWORD errmask=0, num_read, num_request; - OVERLAPPED ov; - int r; - if (!ClearCommError(port_handle, &errmask, &st)) return -1; - //printf("Read, %d requested, %lu buffered\n", count, st.cbInQue); - if (st.cbInQue <= 0) return 0; - // now do a ReadFile, now that we know how much we can read - // a blocking (non-overlapped) read would be simple, but win32 - // is all-or-nothing on async I/O and we must have it enabled - // because it's the only way to get a timeout for WaitCommEvent - num_request = ((DWORD)count < st.cbInQue) ? (DWORD)count : st.cbInQue; - ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); - if (ov.hEvent == NULL) return -1; - ov.Internal = ov.InternalHigh = 0; - ov.Offset = ov.OffsetHigh = 0; - if (ReadFile(port_handle, ptr, num_request, &num_read, &ov)) { - // this should usually be the result, since we asked for - // data we knew was already buffered - //printf("Read, immediate complete, num_read=%lu\n", num_read); - r = num_read; - } else { - if (GetLastError() == ERROR_IO_PENDING) { - if (GetOverlappedResult(port_handle, &ov, &num_read, TRUE)) { - //printf("Read, delayed, num_read=%lu\n", num_read); - r = num_read; - } else { - //printf("Read, delayed error\n"); - r = -1; - } - } else { - //printf("Read, error\n"); - r = -1; - } - } - CloseHandle(ov.hEvent); - // TODO: how much overhead does creating new event objects on - // every I/O request really cost? Would it be better to create - // just 3 when we open the port, and reset/reuse them every time? - // Would mutexes or critical sections be needed to protect them? - return r; -#endif -} - -// Write to the serial port. This blocks until the data is -// sent (or in a buffer to be sent). All bytes are written, -// unless there is some sort of error. -int Serial::Write(const void *ptr, int len) -{ - //printf("Write %d\n", len); - if (!port_is_open) return -1; -#if defined(LINUX) || defined(MACOSX) - int n, written=0; - fd_set wfds; - struct timeval tv; - while (written < len) { - n = write(port_fd, (const char *)ptr + written, len - written); - if (n < 0 && (errno == EAGAIN || errno == EINTR)) n = 0; - //printf("Write, n = %d\n", n); - if (n < 0) return -1; - if (n > 0) { - written += n; - } else { - tv.tv_sec = 10; - tv.tv_usec = 0; - FD_ZERO(&wfds); - FD_SET(port_fd, &wfds); - n = select(port_fd+1, NULL, &wfds, NULL, &tv); - if (n < 0 && errno == EINTR) n = 1; - if (n <= 0) return -1; - } - } - return written; -#elif defined(WINDOWS) - DWORD num_written; - OVERLAPPED ov; - int r; - ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); - if (ov.hEvent == NULL) return -1; - ov.Internal = ov.InternalHigh = 0; - ov.Offset = ov.OffsetHigh = 0; - if (WriteFile(port_handle, ptr, len, &num_written, &ov)) { - //printf("Write, immediate complete, num_written=%lu\n", num_written); - r = num_written; - } else { - if (GetLastError() == ERROR_IO_PENDING) { - if (GetOverlappedResult(port_handle, &ov, &num_written, TRUE)) { - //printf("Write, delayed, num_written=%lu\n", num_written); - r = num_written; - } else { - //printf("Write, delayed error\n"); - r = -1; - } - } else { - //printf("Write, error\n"); - r = -1; - } - }; - CloseHandle(ov.hEvent); - return r; -#endif -} - -// Wait up to msec for data to become available for reading. -// return 0 if timeout, or non-zero if one or more bytes are -// received and can be read. -1 if an error occurs -int Serial::Input_wait(int msec) -{ - if (!port_is_open) return -1; -#if defined(LINUX) || defined(MACOSX) - fd_set rfds; - struct timeval tv; - tv.tv_sec = msec / 1000; - tv.tv_usec = (msec % 1000) * 1000; - FD_ZERO(&rfds); - FD_SET(port_fd, &rfds); - return select(port_fd+1, &rfds, NULL, NULL, &tv); -#elif defined(WINDOWS) - // http://msdn2.microsoft.com/en-us/library/aa363479(VS.85).aspx - // http://msdn2.microsoft.com/en-us/library/aa363424(VS.85).aspx - // http://source.winehq.org/WineAPI/WaitCommEvent.html - COMSTAT st; - DWORD errmask=0, eventmask=EV_RXCHAR, ret; - OVERLAPPED ov; - int r; - // first, request comm event when characters arrive - if (!SetCommMask(port_handle, EV_RXCHAR)) return -1; - // look if there are characters in the buffer already - if (!ClearCommError(port_handle, &errmask, &st)) return -1; - //printf("Input_wait, %lu buffered, timeout = %d ms\n", st.cbInQue, msec); - if (st.cbInQue > 0) return 1; - - ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); - if (ov.hEvent == NULL) return -1; - ov.Internal = ov.InternalHigh = 0; - ov.Offset = ov.OffsetHigh = 0; - if (WaitCommEvent(port_handle, &eventmask, &ov)) { - //printf("Input_wait, WaitCommEvent, immediate success\n"); - r = 1; - } else { - if (GetLastError() == ERROR_IO_PENDING) { - ret = WaitForSingleObject(ov.hEvent, msec); - if (ret == WAIT_OBJECT_0) { - //printf("Input_wait, WaitCommEvent, delayed success\n"); - r = 1; - } else if (ret == WAIT_TIMEOUT) { - //printf("Input_wait, WaitCommEvent, timeout\n"); - GetCommMask(port_handle, &eventmask); - r = 0; - } else { // WAIT_FAILED or WAIT_ABANDONED - //printf("Input_wait, WaitCommEvent, delayed error\n"); - r = -1; - } - } else { - //printf("Input_wait, WaitCommEvent, immediate error\n"); - r = -1; - } - } - SetCommMask(port_handle, 0); - CloseHandle(ov.hEvent); - return r; -#endif -} - -// Discard all received data that hasn't been read -void Serial::Input_discard(void) -{ - if (!port_is_open) return; -#if defined(LINUX) || defined(MACOSX) - // does this really work properly (and is it thread safe) on Linux?? - tcflush(port_fd, TCIFLUSH); -#elif defined(WINDOWS) - PurgeComm(port_handle, PURGE_RXCLEAR); -#endif -} - -// Wait for all transmitted data with Write to actually leave the serial port -void Serial::Output_flush(void) -{ - if (!port_is_open) return; -#if defined(LINUX) || defined(MACOSX) - tcdrain(port_fd); -#elif defined(WINDOWS) - FlushFileBuffers(port_handle); -#endif -} - - -// set DTR and RTS, 0 = low, 1=high, -1=unchanged -int Serial::Set_control(int dtr, int rts) -{ - if (!port_is_open) return -1; -#if defined(LINUX) || defined(MACOSX) - // on Mac OS X, "man 4 tty" - // on Linux, where is this actually documented? - int bits; - if (ioctl(port_fd, TIOCMGET, &bits) < 0) return -1; - if (dtr == 1) { - bits |= TIOCM_DTR; - } else if (dtr == 0) { - bits &= ~TIOCM_DTR; - } - if (rts == 1) { - bits |= TIOCM_RTS; - } else if (rts == 0) { - bits &= ~TIOCM_RTS; - } - if (ioctl(port_fd, TIOCMSET, &bits) < 0) return -1;; -#elif defined(WINDOWS) - // http://msdn.microsoft.com/en-us/library/aa363254(VS.85).aspx - if (dtr == 1) { - if (!EscapeCommFunction(port_handle, SETDTR)) return -1; - } else if (dtr == 0) { - if (!EscapeCommFunction(port_handle, CLRDTR)) return -1; - } - if (rts == 1) { - if (!EscapeCommFunction(port_handle, SETRTS)) return -1; - } else if (rts == 0) { - if (!EscapeCommFunction(port_handle, CLRRTS)) return -1; - } -#endif - return 0; -} - - - -#if defined(LINUX) -// All linux serial port device names. Hopefully all of them anyway. This -// is a long list, but each entry takes only a few bytes and a quick strcmp() -static const char *devnames[] = { -"S", // "normal" Serial Ports - MANY drivers using this -"USB", // USB to serial converters -"ACM", // USB serial modem, CDC class, Abstract Control Model -"MI", // MOXA Smartio/Industio family multiport serial... nice card, I have one :-) -"MX", // MOXA Intellio family multiport serial -"C", // Cyclades async multiport, no longer available, but I have an old ISA one! :-) -"D", // Digiboard (still in 2.6 but no longer supported), new Moschip MCS9901 -"P", // Hayes ESP serial cards (obsolete) -"M", // PAM Software's multimodem & Multitech ISI-Cards -"E", // Stallion intelligent multiport (no longer made) -"L", // RISCom/8 multiport serial -"W", // specialix IO8+ multiport serial -"X", // Specialix SX series cards, also SI & XIO series -"SR", // Specialix RIO serial card 257+ -"n", // Digi International Neo (yes lowercase 'n', drivers/serial/jsm/jsm_driver.c) -"FB", // serial port on the 21285 StrongArm-110 core logic chip -"AM", // ARM AMBA-type serial ports (no DTR/RTS) -"AMA", // ARM AMBA-type serial ports (no DTR/RTS) -"AT", // Atmel AT91 / AT32 Serial ports -"BF", // Blackfin 5xx serial ports (Analog Devices embedded DSP chips) -"CL", // CLPS711x serial ports (ARM processor) -"A", // ICOM Serial -"SMX", // Motorola IMX serial ports -"SOIC", // ioc3 serial -"IOC", // ioc4 serial -"PSC", // Freescale MPC52xx PSCs configured as UARTs -"MM", // MPSC (UART mode) on Marvell GT64240, GT64260, MV64340... -"B", // Mux console found in some PA-RISC servers -"NX", // NetX serial port -"PZ", // PowerMac Z85c30 based ESCC cell found in the "macio" ASIC -"SAC", // Samsung S3C24XX onboard UARTs -"SA", // SA11x0 serial ports -"AM", // KS8695 serial ports & Sharp LH7A40X embedded serial ports -"TX", // TX3927/TX4927/TX4925/TX4938 internal SIO controller -"SC", // Hitachi SuperH on-chip serial module -"SG", // C-Brick Serial Port (and console) SGI Altix machines -"HV", // SUN4V hypervisor console -"UL", // Xilinx uartlite serial controller -"VR", // NEC VR4100 series Serial Interface Unit -"CPM", // CPM (SCC/SMC) serial ports; core driver -"Y", // Amiga A2232 board -"SL", // Microgate SyncLink ISA and PCI high speed multiprotocol serial -"SLG", // Microgate SyncLink GT (might be sync HDLC only?) -"SLM", // Microgate SyncLink Multiport high speed multiprotocol serial -"CH", // Chase Research AT/PCI-Fast serial card -"F", // Computone IntelliPort serial card -"H", // Chase serial card -"I", // virtual modems -"R", // Comtrol RocketPort -"SI", // SmartIO serial card -"T", // Technology Concepts serial card -"V" // Comtrol VS-1000 serial controller -}; -#define NUM_DEVNAMES (sizeof(devnames) / sizeof(const char *)) -#endif - - - -#if defined(MACOSX) -static void macos_ports(io_iterator_t * PortIterator, vector<string>& list) -{ - io_object_t modemService; - CFTypeRef nameCFstring; - char s[MAXPATHLEN]; - - while ((modemService = IOIteratorNext(*PortIterator))) { - nameCFstring = IORegistryEntryCreateCFProperty(modemService, - CFSTR(kIOCalloutDeviceKey), kCFAllocatorDefault, 0); - if (nameCFstring) { - if (CFStringGetCString((const __CFString *)nameCFstring, - s, sizeof(s), kCFStringEncodingASCII)) { - list.push_back(s); - } - CFRelease(nameCFstring); - } - IOObjectRelease(modemService); - } -} -#endif - - -// Return a list of all serial ports -vector<string> Serial::port_list() -{ - vector<string> list; -#if defined(LINUX) - // This is ugly guessing, but Linux doesn't seem to provide anything else. - // If there really is an API to discover serial devices on Linux, please - // email paul@pjrc.com with the info. Please? - // The really BAD aspect is all ports get DTR raised briefly, because linux - // has no way to open the port without raising DTR, and there isn't any way - // to tell if the device file really represents hardware without opening it. - // maybe sysfs or udev provides a useful API?? - DIR *dir; - struct dirent *f; - struct stat st; - unsigned int i, len[NUM_DEVNAMES]; - char s[512]; - int fd, bits; - termios mytios; - - dir = opendir("/dev/"); - if (dir == NULL) return list; - for (i=0; i<NUM_DEVNAMES; i++) len[i] = strlen(devnames[i]); - // Read all the filenames from the /dev directory... - while ((f = readdir(dir)) != NULL) { - // ignore everything that doesn't begin with "tty" - if (strncmp(f->d_name, "tty", 3)) continue; - // ignore anything that's not a known serial device name - for (i=0; i<NUM_DEVNAMES; i++) { - if (!strncmp(f->d_name + 3, devnames[i], len[i])) break; - } - if (i >= NUM_DEVNAMES) continue; - snprintf(s, sizeof(s), "/dev/%s", f->d_name); - // check if it's a character type device (almost certainly is) - if (stat(s, &st) != 0 || !(st.st_mode & S_IFCHR)) continue; - // now see if we can open the file - if the device file is - // populating /dev but doesn't actually represent a loaded - // driver, this is where we will detect it. - fd = open(s, O_RDONLY | O_NOCTTY | O_NONBLOCK); - if (fd < 0) { - // if permission denied, give benefit of the doubt - // (otherwise the port will be invisible to the user - // and we won't have a to alert them to the permssion - // problem) - if (errno == EACCES) list.push_back(s); - // any other error, assume it's not a real device - continue; - } - // does it respond to termios requests? (probably will since - // the name began with tty). Some devices where a single - // driver exports multiple names will open but this is where - // we can really tell if they work with real hardare. - if (tcgetattr(fd, &mytios) != 0) { - close(fd); - continue; - } - // does it respond to reading the control signals? If it's - // some sort of non-serial terminal (eg, pseudo terminals) - // this is where we will detect it's not really a serial port - if (ioctl(fd, TIOCMGET, &bits) < 0) { - close(fd); - continue; - } - // it passed all the tests, it's a serial port, or some sort - // of "terminal" that looks exactly like a real serial port! - close(fd); - // unfortunately, Linux always raises DTR when open is called. - // not nice! Every serial port is going to get DTR raised - // and then lowered. I wish there were a way to prevent this, - // but it seems impossible. - list.push_back(s); - } - closedir(dir); -#elif defined(MACOSX) - // adapted from SerialPortSample.c, by Apple - // http://developer.apple.com/samplecode/SerialPortSample/listing2.html - // and also testserial.c, by Keyspan - // http://www.keyspan.com/downloads-files/developer/macosx/KesypanTestSerial.c - // www.rxtx.org, src/SerialImp.c seems to be based on Keyspan's testserial.c - // neither keyspan nor rxtx properly release memory allocated. - // more documentation at: - // http://developer.apple.com/documentation/DeviceDrivers/Conceptual/WorkingWSerial/WWSerial_SerialDevs/chapter_2_section_6.html - mach_port_t masterPort; - CFMutableDictionaryRef classesToMatch; - io_iterator_t serialPortIterator; - if (IOMasterPort(NULL, &masterPort) != KERN_SUCCESS) return list; - // a usb-serial adaptor is usually considered a "modem", - // especially when it implements the CDC class spec - classesToMatch = IOServiceMatching(kIOSerialBSDServiceValue); - if (!classesToMatch) return list; - CFDictionarySetValue(classesToMatch, CFSTR(kIOSerialBSDTypeKey), - CFSTR(kIOSerialBSDModemType)); - if (IOServiceGetMatchingServices(masterPort, classesToMatch, - &serialPortIterator) != KERN_SUCCESS) return list; - macos_ports(&serialPortIterator, list); - IOObjectRelease(serialPortIterator); - // but it might be considered a "rs232 port", so repeat this - // search for rs232 ports - classesToMatch = IOServiceMatching(kIOSerialBSDServiceValue); - if (!classesToMatch) return list; - CFDictionarySetValue(classesToMatch, CFSTR(kIOSerialBSDTypeKey), - CFSTR(kIOSerialBSDRS232Type)); - if (IOServiceGetMatchingServices(masterPort, classesToMatch, - &serialPortIterator) != KERN_SUCCESS) return list; - macos_ports(&serialPortIterator, list); - IOObjectRelease(serialPortIterator); -#elif defined(WINDOWS) - // http://msdn.microsoft.com/en-us/library/aa365461(VS.85).aspx - // page with 7 ways - not all of them work! - // http://www.naughter.com/enumser.html - // may be possible to just query the windows registary - // http://it.gps678.com/2/ca9c8631868fdd65.html - // search in HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\SERIALCOMM - // Vista has some special new way, vista-only - // http://msdn2.microsoft.com/en-us/library/aa814070(VS.85).aspx - char *buffer, *p; - //DWORD size = QUERYDOSDEVICE_BUFFER_SIZE; - DWORD ret; - - buffer = (char *)malloc(QUERYDOSDEVICE_BUFFER_SIZE); - if (buffer == NULL) return list; - memset(buffer, 0, QUERYDOSDEVICE_BUFFER_SIZE); - ret = QueryDosDeviceA(NULL, buffer, QUERYDOSDEVICE_BUFFER_SIZE); - if (ret) { - //printf("Detect Serial using QueryDosDeviceA: "); - for (p = buffer; *p; p += strlen(p) + 1) { - if (strncmp(p, "COM", 3)) continue; - list.push_back(string(p) ); - //printf(": %s\n", p); - } - } else { - char buf[1024]; - win32_err(buf); - printf("QueryDosDeviceA failed, error \"%s\"\n", buf); - printf("Detect Serial using brute force GetDefaultCommConfig probing: "); - for (int i=1; i<=32; i++) { - printf("try %s", buf); - COMMCONFIG cfg; - DWORD len; - snprintf(buf, sizeof(buf), "COM%d", i); - if (GetDefaultCommConfig(buf, &cfg, &len)) { - std::ostringstream name; - name << "COM" << i << ":"; - list.push_back(name.str()); - printf(": %s", buf); - } - } - } - free(buffer); -#endif - std::sort (list.begin(), list.end()); - return list; -} - - - - - - - - |