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author | Jakob Odersky <jodersky@gmail.com> | 2014-04-17 11:10:20 +0200 |
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committer | Jakob Odersky <jodersky@gmail.com> | 2014-04-17 11:10:20 +0200 |
commit | c8b37629844c4ca3ec9c9e54b7e54775201d75fc (patch) | |
tree | 0cddcbf7fda72310a94340abbb16afb69a9a03ed /flow-native/src | |
parent | d5affc83535f8acc1119be6d05b834a11d059f88 (diff) | |
download | akka-serial-c8b37629844c4ca3ec9c9e54b7e54775201d75fc.tar.gz akka-serial-c8b37629844c4ca3ec9c9e54b7e54775201d75fc.tar.bz2 akka-serial-c8b37629844c4ca3ec9c9e54b7e54775201d75fc.zip |
update build
Diffstat (limited to 'flow-native/src')
-rw-r--r-- | flow-native/src/Makefile.am | 3 | ||||
-rw-r--r-- | flow-native/src/Makefile.in | 535 | ||||
-rw-r--r-- | flow-native/src/com_github_jodersky_flow_internal_NativeSerial.h | 83 | ||||
-rw-r--r-- | flow-native/src/flow.h | 90 | ||||
-rw-r--r-- | flow-native/src/flow_jni.c | 169 | ||||
-rw-r--r-- | flow-native/src/platform/posix/flow.c | 248 | ||||
-rw-r--r-- | flow-native/src/platform/windows/README | 1 | ||||
-rw-r--r-- | flow-native/src/platform/windows/flow.c.disabled | 416 |
8 files changed, 1545 insertions, 0 deletions
diff --git a/flow-native/src/Makefile.am b/flow-native/src/Makefile.am new file mode 100644 index 0000000..a002cea --- /dev/null +++ b/flow-native/src/Makefile.am @@ -0,0 +1,3 @@ +lib_LTLIBRARIES = libflow.la + +libflow_la_SOURCES = flow_jni.c platform/posix/flow.c flow.h com_github_jodersky_flow_internal_NativeSerial.h
\ No newline at end of file diff --git a/flow-native/src/Makefile.in b/flow-native/src/Makefile.in new file mode 100644 index 0000000..7990789 --- /dev/null +++ b/flow-native/src/Makefile.in @@ -0,0 +1,535 @@ +# Makefile.in generated by automake 1.11.3 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software +# Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = src +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/libtool.m4 \ + $(top_srcdir)/m4/ltoptions.m4 $(top_srcdir)/m4/ltsugar.m4 \ + $(top_srcdir)/m4/ltversion.m4 $(top_srcdir)/m4/lt~obsolete.m4 \ + $(top_srcdir)/configure.ac +am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \ + $(ACLOCAL_M4) +mkinstalldirs = $(install_sh) -d +CONFIG_HEADER = $(top_builddir)/config.h +CONFIG_CLEAN_FILES = +CONFIG_CLEAN_VPATH_FILES = +am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; 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+ +/* + * Class: com_github_jodersky_flow_internal_NativeSerial + * Method: readDirect + * Signature: (JLjava/nio/ByteBuffer;)I + */ +JNIEXPORT jint JNICALL Java_com_github_jodersky_flow_internal_NativeSerial_readDirect + (JNIEnv *, jclass, jlong, jobject); + +/* + * Class: com_github_jodersky_flow_internal_NativeSerial + * Method: read + * Signature: (J[B)I + */ +JNIEXPORT jint JNICALL Java_com_github_jodersky_flow_internal_NativeSerial_read + (JNIEnv *, jclass, jlong, jbyteArray); + +/* + * Class: com_github_jodersky_flow_internal_NativeSerial + * Method: cancelRead + * Signature: (J)V + */ +JNIEXPORT void JNICALL Java_com_github_jodersky_flow_internal_NativeSerial_cancelRead + (JNIEnv *, jclass, jlong); + +/* + * Class: com_github_jodersky_flow_internal_NativeSerial + * Method: writeDirect + * Signature: (JLjava/nio/ByteBuffer;I)I + */ +JNIEXPORT jint JNICALL Java_com_github_jodersky_flow_internal_NativeSerial_writeDirect + (JNIEnv *, jclass, jlong, jobject, jint); + +/* + * Class: com_github_jodersky_flow_internal_NativeSerial + * Method: write + * Signature: (J[BI)I + */ +JNIEXPORT jint JNICALL Java_com_github_jodersky_flow_internal_NativeSerial_write + (JNIEnv *, jclass, jlong, jbyteArray, jint); + +/* + * Class: com_github_jodersky_flow_internal_NativeSerial + * Method: close + * Signature: (J)V + */ +JNIEXPORT void JNICALL Java_com_github_jodersky_flow_internal_NativeSerial_close + (JNIEnv *, jclass, jlong); + +/* + * Class: com_github_jodersky_flow_internal_NativeSerial + * Method: debug + * Signature: (Z)V + */ +JNIEXPORT void JNICALL Java_com_github_jodersky_flow_internal_NativeSerial_debug + (JNIEnv *, jclass, jboolean); + +#ifdef __cplusplus +} +#endif +#endif diff --git a/flow-native/src/flow.h b/flow-native/src/flow.h new file mode 100644 index 0000000..ff80259 --- /dev/null +++ b/flow-native/src/flow.h @@ -0,0 +1,90 @@ +#ifndef FLOW_H +#define FLOW_H + +#include <stdbool.h> +#include <stddef.h> + +#ifdef _cplusplus +extern "C" { +#endif + +//general error codes that are returned by functions +#define E_IO -1 //IO error +#define E_ACCESS_DENIED -2 //access denied +#define E_BUSY -3 // port is busy +#define E_INVALID_SETTINGS -4 // some port settings are invalid +#define E_INTERRUPT -5 // not really an error, function call aborted because port is closed +#define E_NO_PORT -6 //requested port does not exist + +#define PARITY_NONE 0 +#define PARITY_ODD 1 +#define PARITY_EVEN 2 + +/** Contains internal configuration of an open serial port. */ +struct serial_config; + +/**Opens a serial port and allocates memory for storing configuration. Note: if this function fails, + * any internally allocated resources will be freed. + * @param port_name name of port + * @param baud baud rate + * @param char_size character size of data transmitted through serial device + * @param two_stop_bits set to use two stop bits instead of one + * @param parity kind of parity checking to use + * @param serial pointer to memory that will be allocated with a serial structure + * @return 0 on success + * @return E_NO_PORT if the given port does not exist + * @return E_ACCESS_DENIED if permissions are not sufficient to open port + * @return E_BUSY if port is already in use + * @return E_INVALID_SETTINGS if any of the specified settings are invalid + * @return E_IO on other error */ +int serial_open( + const char* port_name, + int baud, + int char_size, + bool two_stop_bits, + int parity, + struct serial_config** const serial); + +/**Closes a previously opened serial port and frees memory containing the configuration. Note: after a call to + * this function, the 'serial' pointer will become invalid, make sure you only call it once. This function is NOT + * thread safe, make sure no read or write is in prgress when this function is called (the reason is that per + * close manual page, close should not be called on a file descriptor that is in use by another thread). + * @param serial pointer to serial configuration that is to be closed (and freed) + * @return 0 on success + * @return E_IO on error */ +int serial_close(struct serial_config* const serial); + +/**Starts a read from a previously opened serial port. The read is blocking, however it may be + * interrupted by calling 'serial_cancel_read' on the given serial port. + * @param serial pointer to serial configuration from which to read + * @param buffer buffer into which data is read + * @param size maximum buffer size + * @return n>0 the number of bytes read into buffer + * @return E_INTERRUPT if the call to this function was interrupted + * @return E_IO on IO error */ +int serial_read(struct serial_config* const serial, char* const buffer, size_t size); + +/**Cancels a blocked read call. This function is thread safe, i.e. it may be called from a thread even + * while another thread is blocked in a read call. + * @param serial_config the serial port to interrupt + * @return 0 on success + * @return E_IO on error */ +int serial_cancel_read(struct serial_config* const serial); + +/**Writes data to a previously opened serial port. Non bocking. + * @param serial pointer to serial configuration to which to write + * @param data data to write + * @param size number of bytes to write from data + * @return n>0 the number of bytes written + * @return E_IO on IO error */ +int serial_write(struct serial_config* const serial, char* const data, size_t size); + +/**Sets debugging option. If debugging is enabled, detailed error message are printed from method calls. */ +void serial_debug(bool value); + +#ifdef __cplusplus +} +#endif + + +#endif /* FLOW_H */ diff --git a/flow-native/src/flow_jni.c b/flow-native/src/flow_jni.c new file mode 100644 index 0000000..8ec2aed --- /dev/null +++ b/flow-native/src/flow_jni.c @@ -0,0 +1,169 @@ +#include "flow.h" +#include "com_github_jodersky_flow_internal_NativeSerial.h" + + +static inline void throwException(JNIEnv* env, const char* const exception, const char * const message) { + (*env)->ThrowNew(env, (*env)->FindClass(env, exception), message); +} + +static inline void check(JNIEnv* env, int id) { + switch (id) { + case E_IO: throwException(env, "java/io/IOException", ""); break; + case E_BUSY: throwException(env, "com/github/jodersky/flow/PortInUseException", ""); break; + case E_ACCESS_DENIED: throwException(env, "com/github/jodersky/flow/AccessDeniedException", ""); break; + case E_INVALID_SETTINGS: throwException(env, "com/github/jodersky/flow/InvalidSettingsException", ""); break; + case E_INTERRUPT: throwException(env, "com/github/jodersky/flow/PortInterruptedException", ""); break; + case E_NO_PORT: throwException(env, "com/github/jodersky/flow/NoSuchPortException", ""); break; + default: return; + } +} + + +/* + * Class: com_github_jodersky_flow_internal_NativeSerial + * Method: open + * Signature: (Ljava/lang/String;IIZI)J + */ +JNIEXPORT jlong JNICALL Java_com_github_jodersky_flow_internal_NativeSerial_open + (JNIEnv *env, jclass clazz, jstring port_name, jint baud, jint char_size, jboolean two_stop_bits, jint parity) { + + const char *dev = (*env)->GetStringUTFChars(env, port_name, 0); + struct serial_config* config; + int r = serial_open(dev, baud, char_size, two_stop_bits, parity, &config); + (*env)->ReleaseStringUTFChars(env, port_name, dev); + + + if (r < 0) { + check(env, r); + return 0; + } + + long jpointer = (long) config; + return jpointer; + +} + +/* + * Class: com_github_jodersky_flow_internal_NativeSerial + * Method: readDirect + * Signature: (JLjava/nio/ByteBuffer;)I + */ +JNIEXPORT jint JNICALL Java_com_github_jodersky_flow_internal_NativeSerial_readDirect + (JNIEnv *env, jclass clazz, jlong config, jobject buffer) { + + char* local_buffer = (char*) (*env)->GetDirectBufferAddress(env, buffer); + if (local_buffer == NULL) { + throwException(env, "java/lang/IllegalArgumentException", "ByteBuffer not direct"); + return -1; + } + jlong size = (*env)->GetDirectBufferCapacity(env, buffer); + + int r = serial_read((struct serial_config*) config, local_buffer, (size_t) size); + if (r < 0) { + check(env, r); + return -1; + } + return r; + +} + +/* + * Class: com_github_jodersky_flow_internal_NativeSerial + * Method: read + * Signature: (J[B)I + */ +JNIEXPORT jint JNICALL Java_com_github_jodersky_flow_internal_NativeSerial_read + (JNIEnv *env, jclass clazz, jlong config, jbyteArray buffer) { + + jsize size = (*env)->GetArrayLength(env, buffer); + char local_buffer[size]; + int r = serial_read((struct serial_config*) config, local_buffer, size); + if (r < 0) { + check(env, r); + return -1; + } + + (*env)->SetByteArrayRegion(env, buffer, 0, r, (signed char *) local_buffer); + return r; + +} + +/* + * Class: com_github_jodersky_flow_internal_NativeSerial + * Method: cancelRead + * Signature: (J)V + */ +JNIEXPORT void JNICALL Java_com_github_jodersky_flow_internal_NativeSerial_cancelRead + (JNIEnv *env, jclass clazz, jlong config) { + + int r = serial_cancel_read((struct serial_config*) config); + if (r < 0) { + check(env, r); + } + +} + +/* + * Class: com_github_jodersky_flow_internal_NativeSerial + * Method: writeDirect + * Signature: (JLjava/nio/ByteBuffer;I)I + */ +JNIEXPORT jint JNICALL Java_com_github_jodersky_flow_internal_NativeSerial_writeDirect + (JNIEnv *env, jclass clazz, jlong config, jobject buffer, jint size) { + + char* local_buffer = (char *) (*env)->GetDirectBufferAddress(env, buffer); + if (local_buffer == NULL) { + throwException(env, "java/lang/IllegalArgumentException", "ByteBuffer not direct"); + return -1; + } + + int r = serial_write((struct serial_config*) config, local_buffer, (size_t) size); + if (r < 0) { + check(env, r); + return -1; + } + return r; + +} + +/* + * Class: com_github_jodersky_flow_internal_NativeSerial + * Method: write + * Signature: (J[BI)I + */ +JNIEXPORT jint JNICALL Java_com_github_jodersky_flow_internal_NativeSerial_write + (JNIEnv *env, jclass clazz, jlong config, jbyteArray buffer, jint size) { + + char* local_buffer = (char*) (*env)->GetByteArrayElements(env, buffer, NULL); + int r = serial_write((struct serial_config*) config, local_buffer, size); + (*env)->ReleaseByteArrayElements(env, buffer, (signed char*) local_buffer, JNI_ABORT); + if (r < 0) { + check(env, r); + return -1; + } + return r; + +} + +/* + * Class: com_github_jodersky_flow_internal_NativeSerial + * Method: close + * Signature: (J)V + */ +JNIEXPORT void JNICALL Java_com_github_jodersky_flow_internal_NativeSerial_close + (JNIEnv *env, jclass clazz, jlong config) { + int r = serial_close((struct serial_config*) config); + if (r < 0) { + check(env, r); + } +} + +/* + * Class: com_github_jodersky_flow_internal_NativeSerial + * Method: debug + * Signature: (Z)V + */ +JNIEXPORT void JNICALL Java_com_github_jodersky_flow_internal_NativeSerial_debug + (JNIEnv *env, jclass clazz, jboolean value) { + serial_debug((bool) value); +}
\ No newline at end of file diff --git a/flow-native/src/platform/posix/flow.c b/flow-native/src/platform/posix/flow.c new file mode 100644 index 0000000..1adb10c --- /dev/null +++ b/flow-native/src/platform/posix/flow.c @@ -0,0 +1,248 @@ +#include <stdlib.h> +#include <stdio.h> +#include <unistd.h> +#include <errno.h> +#include <termios.h> +#include <fcntl.h> +#include <sys/file.h> +#include "flow.h" + + +#define DATA_CANCEL 0xffffffff + +static bool debug = false; +#define DEBUG(f) if (debug) {f} + +void serial_debug(bool value) { + debug = value; +} + +//contains file descriptors used in managing a serial port +struct serial_config { + int port_fd; // file descriptor of serial port + + /* a pipe is used to abort a serial read by writing something into the + * write end of the pipe */ + int pipe_read_fd; // file descriptor, read end of pipe + int pipe_write_fd; // file descriptor, write end of pipe +}; + +int serial_open( + const char* const port_name, + int baud, + int char_size, + bool two_stop_bits, + int parity, + struct serial_config** serial) { + + int fd = open(port_name, O_RDWR | O_NOCTTY | O_NONBLOCK); + + if (fd < 0) { + int en = errno; + DEBUG(perror("error obtaining port file descriptor");); + if (en == EACCES) return E_ACCESS_DENIED; + if (en == ENOENT) return E_NO_PORT; + return E_IO; + } + + if (flock(fd, LOCK_EX | LOCK_NB) < 0) { + DEBUG(perror("error acquiring lock on port");); + close(fd); + return E_BUSY; + } + + /* configure new port settings */ + struct termios newtio; + + /* following calls correspond to makeraw() */ + newtio.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON); + newtio.c_oflag &= ~OPOST; + newtio.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN); + newtio.c_cflag &= ~(CSIZE | PARENB); + newtio.c_cflag |= CREAD; + + /* set speed */ + speed_t bd; + switch (baud) { + case 50: bd = B50; break; + case 75: bd = B75; break; + case 110: bd = B110; break; + case 134: bd = B134; break; + case 150: bd = B150; break; + case 200: bd = B200; break; + case 300: bd = B300; break; + case 600: bd = B600; break; + case 1200: bd = B1200; break; + case 1800: bd = B1800; break; + case 2400: bd = B2400; break; + case 4800: bd = B4800; break; + case 9600: bd = B9600; break; + case 19200: bd = B19200; break; + case 38400: bd = B38400; break; + case 57600: bd = B57600; break; + case 115200: bd = B115200; break; + case 230400: bd = B230400; break; + default: + close(fd); + DEBUG(fprintf(stderr, "invalid baud rate %d\n", baud);); + return E_INVALID_SETTINGS; + } + + if (cfsetspeed(&newtio, bd) < 0) { + DEBUG(perror("error setting baud rate");); + close(fd); + return E_IO; + } + + /* set char size*/ + switch (char_size) { + case 5: newtio.c_cflag |= CS5; break; + case 6: newtio.c_cflag |= CS6; break; + case 7: newtio.c_cflag |= CS7; break; + case 8: newtio.c_cflag |= CS8; break; + default: + close(fd); + DEBUG(fprintf(stderr, "invalid character size %d\n", char_size);); + return E_INVALID_SETTINGS; + } + + /* use two stop bits */ + if (two_stop_bits){ + newtio.c_cflag |= CSTOPB; + } + + /* set parity */ + switch (parity) { + case PARITY_NONE: break; + case PARITY_ODD: newtio.c_cflag |= (PARENB | PARODD); break; + case PARITY_EVEN: newtio.c_cflag |= PARENB; break; + default: + close(fd); + DEBUG(fprintf(stderr, "invalid parity %d\n", parity);); + return E_INVALID_SETTINGS; + } + + if (tcflush(fd, TCIOFLUSH) < 0) { + DEBUG(perror("error flushing serial settings");); + close(fd); + return E_IO; + } + + if (tcsetattr(fd, TCSANOW, &newtio) < 0) { + DEBUG(perror("error applying serial settings");); + close(fd); + return E_IO; + } + + int pipe_fd[2]; + if (pipe(pipe_fd) < 0) { + DEBUG(perror("error opening pipe");); + close(fd); + return E_IO; + } + + if (fcntl(pipe_fd[0], F_SETFL, O_NONBLOCK) < 0 || fcntl(pipe_fd[1], F_SETFL, O_NONBLOCK) < 0) { + DEBUG(perror("error setting pipe to non-blocking");); + close(fd); + close(pipe_fd[0]); + close(pipe_fd[1]); + return E_IO; + } + + struct serial_config* s = malloc(sizeof(s)); + if (s == NULL) { + DEBUG(perror("error allocating memory for serial configuration");); + close(fd); + close(pipe_fd[0]); + close(pipe_fd[1]); + return E_IO; + } + + s->port_fd = fd; + s->pipe_read_fd = pipe_fd[0]; + s->pipe_write_fd = pipe_fd[1]; + (*serial) = s; + + return 0; +} + + +int serial_close(struct serial_config* const serial) { + if (close(serial->pipe_write_fd) < 0) { + DEBUG(perror("error closing write end of pipe");); + return E_IO; + } + if (close(serial->pipe_read_fd) < 0) { + DEBUG(perror("error closing read end of pipe");); + return E_IO; + } + + if (flock(serial->port_fd, LOCK_UN) < 0){ + DEBUG(perror("error releasing lock on port");); + return E_IO; + } + if (close(serial->port_fd) < 0) { + DEBUG(perror("error closing port");); + return E_IO; + } + + free(serial); + return 0; +} + +int serial_read(struct serial_config* const serial, char* const buffer, size_t size) { + int port = serial->port_fd; + int pipe = serial->pipe_read_fd; + + fd_set rfds; + FD_ZERO(&rfds); + FD_SET(port, &rfds); + FD_SET(pipe, &rfds); + + int nfds = pipe + 1; + if (pipe < port) nfds = port + 1; + + int n = select(nfds, &rfds, NULL, NULL, NULL); + if (n < 0) { + DEBUG(perror("error trying to call select on port and pipe");); + return E_IO; + } + + if (FD_ISSET(pipe, &rfds)) { + return E_INTERRUPT; + } else if (FD_ISSET(port, &rfds)) { + int r = read(port, buffer, size); + + //treat 0 bytes read as an error to avoid problems on disconnect + //anyway, after a poll there should be more than 0 bytes available to read + if (r <= 0) { + DEBUG(perror("error data not available after select");); + return E_IO; + } + return r; + } else { + fprintf(stderr, "select returned unknown read sets\n"); + return E_IO; + } +} + +int serial_cancel_read(struct serial_config* const serial) { + int data = DATA_CANCEL; + + //write to pipe to wake up any blocked read thread (self-pipe trick) + if (write(serial->pipe_write_fd, &data, 1) < 0) { + DEBUG(perror("error writing to pipe during read cancel");); + return E_IO; + } + + return 0; +} + +int serial_write(struct serial_config* const serial, char* const data, size_t size) { + int r = write(serial->port_fd, data, size); + if (r < 0) { + DEBUG(perror("error writing to port");); + return E_IO; + } + return r; +}
\ No newline at end of file diff --git a/flow-native/src/platform/windows/README b/flow-native/src/platform/windows/README new file mode 100644 index 0000000..3d24410 --- /dev/null +++ b/flow-native/src/platform/windows/README @@ -0,0 +1 @@ +The contents of the file flow.c were found in the avrdude project. They look like they may be a good starting point for serial communication on windows. diff --git a/flow-native/src/platform/windows/flow.c.disabled b/flow-native/src/platform/windows/flow.c.disabled new file mode 100644 index 0000000..86a267c --- /dev/null +++ b/flow-native/src/platform/windows/flow.c.disabled @@ -0,0 +1,416 @@ +/* + * avrdude - A Downloader/Uploader for AVR device programmers + * Copyright (C) 2003, 2004 Martin J. Thomas <mthomas@rhrk.uni-kl.de> + * Copyright (C) 2006 Joerg Wunsch <j@uriah.heep.sax.de> + * + * 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 2 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/>. + */ + +/* $Id$ */ + +/* + * Native Win32 serial interface for avrdude. + */ + +#include "avrdude.h" + +#if defined(WIN32NATIVE) + +#include <windows.h> +#include <stdio.h> +#include <ctype.h> /* for isprint */ + +#include "serial.h" + +long serial_recv_timeout = 5000; /* ms */ + +#define W32SERBUFSIZE 1024 + +struct baud_mapping { + long baud; + DWORD speed; +}; + +/* HANDLE hComPort=INVALID_HANDLE_VALUE; */ + +static struct baud_mapping baud_lookup_table [] = { + { 1200, CBR_1200 }, + { 2400, CBR_2400 }, + { 4800, CBR_4800 }, + { 9600, CBR_9600 }, + { 19200, CBR_19200 }, + { 38400, CBR_38400 }, + { 57600, CBR_57600 }, + { 115200, CBR_115200 }, + { 0, 0 } /* Terminator. */ +}; + +static DWORD serial_baud_lookup(long baud) +{ + struct baud_mapping *map = baud_lookup_table; + + while (map->baud) { + if (map->baud == baud) + return map->speed; + map++; + } + + /* + * If a non-standard BAUD rate is used, issue + * a warning (if we are verbose) and return the raw rate + */ + if (verbose > 0) + fprintf(stderr, "%s: serial_baud_lookup(): Using non-standard baud rate: %ld", + progname, baud); + + return baud; +} + + +static BOOL serial_w32SetTimeOut(HANDLE hComPort, DWORD timeout) // in ms +{ + COMMTIMEOUTS ctmo; + ZeroMemory (&ctmo, sizeof(COMMTIMEOUTS)); + ctmo.ReadIntervalTimeout = timeout; + ctmo.ReadTotalTimeoutMultiplier = timeout; + ctmo.ReadTotalTimeoutConstant = timeout; + + return SetCommTimeouts(hComPort, &ctmo); +} + +static int ser_setspeed(union filedescriptor *fd, long baud) +{ + DCB dcb; + HANDLE hComPort = (HANDLE)fd->pfd; + + ZeroMemory (&dcb, sizeof(DCB)); + dcb.DCBlength = sizeof(DCB); + dcb.BaudRate = serial_baud_lookup (baud); + dcb.fBinary = 1; + dcb.fDtrControl = DTR_CONTROL_DISABLE; + dcb.fRtsControl = RTS_CONTROL_DISABLE; + dcb.ByteSize = 8; + dcb.Parity = NOPARITY; + dcb.StopBits = ONESTOPBIT; + + if (!SetCommState(hComPort, &dcb)) + return -1; + + return 0; +} + + +static int ser_open(char * port, long baud, union filedescriptor *fdp) +{ + LPVOID lpMsgBuf; + HANDLE hComPort=INVALID_HANDLE_VALUE; + char *newname = 0; + + /* + * If the port is of the form "net:<host>:<port>", then + * handle it as a TCP connection to a terminal server. + * + * This is curently not implemented for Win32. + */ + if (strncmp(port, "net:", strlen("net:")) == 0) { + fprintf(stderr, + "%s: ser_open(): network connects are currently not" + "implemented for Win32 environments\n", + progname); + return -1; + } + + if (strncasecmp(port, "com", strlen("com")) == 0) { + + // prepend "\\\\.\\" to name, required for port # >= 10 + newname = malloc(strlen("\\\\.\\") + strlen(port) + 1); + + if (newname == 0) { + fprintf(stderr, + "%s: ser_open(): out of memory\n", + progname); + exit(1); + } + strcpy(newname, "\\\\.\\"); + strcat(newname, port); + + port = newname; + } + + hComPort = CreateFile(port, GENERIC_READ | GENERIC_WRITE, 0, NULL, + OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); + + if (hComPort == INVALID_HANDLE_VALUE) { + FormatMessage( + FORMAT_MESSAGE_ALLOCATE_BUFFER | + FORMAT_MESSAGE_FROM_SYSTEM | + FORMAT_MESSAGE_IGNORE_INSERTS, + NULL, + GetLastError(), + MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language + (LPTSTR) &lpMsgBuf, + 0, + NULL); + fprintf(stderr, "%s: ser_open(): can't open device \"%s\": %s\n", + progname, port, (char*)lpMsgBuf); + LocalFree( lpMsgBuf ); + return -1; + } + + if (!SetupComm(hComPort, W32SERBUFSIZE, W32SERBUFSIZE)) + { + CloseHandle(hComPort); + fprintf(stderr, "%s: ser_open(): can't set buffers for \"%s\"\n", + progname, port); + return -1; + } + + fdp->pfd = (void *)hComPort; + if (ser_setspeed(fdp, baud) != 0) + { + CloseHandle(hComPort); + fprintf(stderr, "%s: ser_open(): can't set com-state for \"%s\"\n", + progname, port); + return -1; + } + + if (!serial_w32SetTimeOut(hComPort,0)) + { + CloseHandle(hComPort); + fprintf(stderr, "%s: ser_open(): can't set initial timeout for \"%s\"\n", + progname, port); + return -1; + } + + if (newname != 0) { + free(newname); + } + return 0; +} + + +static void ser_close(union filedescriptor *fd) +{ + HANDLE hComPort=(HANDLE)fd->pfd; + if (hComPort != INVALID_HANDLE_VALUE) + CloseHandle (hComPort); + + hComPort = INVALID_HANDLE_VALUE; +} + +static int ser_set_dtr_rts(union filedescriptor *fd, int is_on) +{ + HANDLE hComPort=(HANDLE)fd->pfd; + + if (is_on) { + EscapeCommFunction(hComPort, SETDTR); + EscapeCommFunction(hComPort, SETRTS); + } else { + EscapeCommFunction(hComPort, CLRDTR); + EscapeCommFunction(hComPort, CLRRTS); + } + return 0; +} + + +static int ser_send(union filedescriptor *fd, unsigned char * buf, size_t buflen) +{ + size_t len = buflen; + unsigned char c='\0'; + DWORD written; + unsigned char * b = buf; + + HANDLE hComPort=(HANDLE)fd->pfd; + + if (hComPort == INVALID_HANDLE_VALUE) { + fprintf(stderr, "%s: ser_send(): port not open\n", + progname); + exit(1); + } + + if (!len) + return 0; + + if (verbose > 3) + { + fprintf(stderr, "%s: Send: ", progname); + + while (len) { + c = *b; + if (isprint(c)) { + fprintf(stderr, "%c ", c); + } + else { + fprintf(stderr, ". "); + } + fprintf(stderr, "[%02x] ", c); + b++; + len--; + } + fprintf(stderr, "\n"); + } + + serial_w32SetTimeOut(hComPort,500); + + if (!WriteFile (hComPort, buf, buflen, &written, NULL)) { + fprintf(stderr, "%s: ser_send(): write error: %s\n", + progname, "sorry no info avail"); // TODO + exit(1); + } + + if (written != buflen) { + fprintf(stderr, "%s: ser_send(): size/send mismatch\n", + progname); + exit(1); + } + + return 0; +} + + +static int ser_recv(union filedescriptor *fd, unsigned char * buf, size_t buflen) +{ + unsigned char c; + unsigned char * p = buf; + DWORD read; + + HANDLE hComPort=(HANDLE)fd->pfd; + + if (hComPort == INVALID_HANDLE_VALUE) { + fprintf(stderr, "%s: ser_read(): port not open\n", + progname); + exit(1); + } + + serial_w32SetTimeOut(hComPort, serial_recv_timeout); + + if (!ReadFile(hComPort, buf, buflen, &read, NULL)) { + LPVOID lpMsgBuf; + FormatMessage( + FORMAT_MESSAGE_ALLOCATE_BUFFER | + FORMAT_MESSAGE_FROM_SYSTEM | + FORMAT_MESSAGE_IGNORE_INSERTS, + NULL, + GetLastError(), + MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language + (LPTSTR) &lpMsgBuf, + 0, + NULL ); + fprintf(stderr, "%s: ser_recv(): read error: %s\n", + progname, (char*)lpMsgBuf); + LocalFree( lpMsgBuf ); + exit(1); + } + + /* time out detected */ + if (read == 0) { + if (verbose > 1) + fprintf(stderr, + "%s: ser_recv(): programmer is not responding\n", + progname); + return -1; + } + + p = buf; + + if (verbose > 3) + { + fprintf(stderr, "%s: Recv: ", progname); + + while (read) { + c = *p; + if (isprint(c)) { + fprintf(stderr, "%c ", c); + } + else { + fprintf(stderr, ". "); + } + fprintf(stderr, "[%02x] ", c); + + p++; + read--; + } + fprintf(stderr, "\n"); + } + return 0; +} + + +static int ser_drain(union filedescriptor *fd, int display) +{ + // int rc; + unsigned char buf[10]; + BOOL readres; + DWORD read; + + HANDLE hComPort=(HANDLE)fd->pfd; + + if (hComPort == INVALID_HANDLE_VALUE) { + fprintf(stderr, "%s: ser_drain(): port not open\n", + progname); + exit(1); + } + + serial_w32SetTimeOut(hComPort,250); + + if (display) { + fprintf(stderr, "drain>"); + } + + while (1) { + readres=ReadFile(hComPort, buf, 1, &read, NULL); + if (!readres) { + LPVOID lpMsgBuf; + FormatMessage( + FORMAT_MESSAGE_ALLOCATE_BUFFER | + FORMAT_MESSAGE_FROM_SYSTEM | + FORMAT_MESSAGE_IGNORE_INSERTS, + NULL, + GetLastError(), + MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language + (LPTSTR) &lpMsgBuf, + 0, + NULL ); + fprintf(stderr, "%s: ser_drain(): read error: %s\n", + progname, (char*)lpMsgBuf); + LocalFree( lpMsgBuf ); + exit(1); + } + + if (read) { // data avail + if (display) fprintf(stderr, "%02x ", buf[0]); + } + else { // no more data + if (display) fprintf(stderr, "<drain\n"); + break; + } + } // while + return 0; +} + +struct serial_device serial_serdev = +{ + .open = ser_open, + .setspeed = ser_setspeed, + .close = ser_close, + .send = ser_send, + .recv = ser_recv, + .drain = ser_drain, + .set_dtr_rts = ser_set_dtr_rts, + .flags = SERDEV_FL_CANSETSPEED, +}; + +struct serial_device *serdev = &serial_serdev; + +#endif /* WIN32NATIVE */ |