/**************************************************************************** * examples/usbserial/main.c * * Copyright (C) 2008, 2010 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include #include #include #include #include #include /**************************************************************************** * Definitions ****************************************************************************/ #if defined(CONFIG_EXAMPLES_USBSERIAL_INONLY) && defined(CONFIG_EXAMPLES_USBSERIAL_OUTONLY) # error "Cannot define both CONFIG_EXAMPLES_USBSERIAL_INONLY and _OUTONLY" #endif #if defined(CONFIG_EXAMPLES_USBSERIAL_ONLYSMALL) && defined(CONFIG_EXAMPLES_USBSERIAL_ONLYBIG) # error "Cannot define both CONFIG_EXAMPLES_USBSERIAL_ONLYSMALL and _ONLYBIG" #endif #if !defined(CONFIG_EXAMPLES_USBSERIAL_ONLYBIG) && !defined(CONFIG_EXAMPLES_USBSERIAL_ONLYSMALL) # ifndef CONFIG_EXAMPLES_USBSERIAL_OUTONLY # define COUNTER_NEEDED 1 # endif #endif #ifdef CONFIG_EXAMPLES_USBSERIAL_TRACEINIT # define TRACE_INIT_BITS (TRACE_INIT_BIT) #else # define TRACE_INIT_BITS (0) #endif #define TRACE_ERROR_BITS (TRACE_DEVERROR_BIT|TRACE_CLSERROR_BIT) #ifdef CONFIG_EXAMPLES_USBSERIAL_TRACECLASS # define TRACE_CLASS_BITS (TRACE_CLASS_BIT|TRACE_CLASSAPI_BIT|TRACE_CLASSSTATE_BIT) #else # define TRACE_CLASS_BITS (0) #endif #ifdef CONFIG_EXAMPLES_USBSERIAL_TRACETRANSFERS # define TRACE_TRANSFER_BITS (TRACE_OUTREQQUEUED_BIT|TRACE_INREQQUEUED_BIT|TRACE_READ_BIT|\ TRACE_WRITE_BIT|TRACE_COMPLETE_BIT) #else # define TRACE_TRANSFER_BITS (0) #endif #ifdef CONFIG_EXAMPLES_USBSERIAL_TRACECONTROLLER # define TRACE_CONTROLLER_BITS (TRACE_EP_BIT|TRACE_DEV_BIT) #else # define TRACE_CONTROLLER_BITS (0) #endif #ifdef CONFIG_EXAMPLES_USBSERIAL_TRACEINTERRUPTS # define TRACE_INTERRUPT_BITS (TRACE_INTENTRY_BIT|TRACE_INTDECODE_BIT|TRACE_INTEXIT_BIT) #else # define TRACE_INTERRUPT_BITS (0) #endif #define TRACE_BITSET (TRACE_INIT_BITS|TRACE_ERROR_BITS|TRACE_CLASS_BITS|\ TRACE_TRANSFER_BITS|TRACE_CONTROLLER_BITS|TRACE_INTERRUPT_BITS) #ifdef CONFIG_CPP_HAVE_VARARGS # ifdef CONFIG_DEBUG # define message(...) lib_lowprintf(__VA_ARGS__) # define trmessage lib_lowprintf # else # define message(...) printf(__VA_ARGS__) # define trmessage printf # endif #else # ifdef CONFIG_DEBUG # define message lib_lowprintf # define trmessage lib_lowprintf # else # define message printf # define trmessage printf # endif #endif #define IOBUFFER_SIZE 256 /**************************************************************************** * Private Data ****************************************************************************/ #ifndef CONFIG_EXAMPLES_USBSERIAL_ONLYBIG static const char g_shortmsg[] = "Hello, World!!\n"; #endif #ifndef CONFIG_EXAMPLES_USBSERIAL_ONLYSMALL static const char g_longmsg[] = "The Spanish Armada a Speech by Queen Elizabeth I of England\n" "Addressed to the English army at Tilbury Fort - 1588\n" "My loving people, we have been persuaded by some, that are careful of our " "safety, to take heed how we commit ourselves to armed multitudes, for fear " "of treachery; but I assure you, I do not desire to live to distrust my " "faithful and loving people.\n" "Let tyrants fear; I have always so behaved myself that, under God, I have " "placed my chiefest strength and safeguard in the loyal hearts and good will " "of my subjects. And therefore I am come amongst you at this time, not as for " "my recreation or sport, but being resolved, in the midst and heat of the " "battle, to live or die amongst you all; to lay down, for my God, and for " "my kingdom, and for my people, my honour and my blood, even the dust.\n" "I know I have but the body of a weak and feeble woman; but I have the heart " "of a king, and of a king of England, too; and think foul scorn that Parma " "or Spain, or any prince of Europe, should dare to invade the borders of my " "realms: to which, rather than any dishonour should grow by me, I myself will " "take up arms; I myself will be your general, judge, and rewarder of every " "one of your virtues in the field.\n" "I know already, by your forwardness, that you have deserved rewards and " "crowns; and we do assure you, on the word of a prince, they shall be duly " "paid you. In the mean my lieutenant general shall be in my stead, than whom " "never prince commanded a more noble and worthy subject; not doubting by " "your obedience to my general, by your concord in the camp, and by your " "valour in the field, we shall shortly have a famous victory over the enemies " "of my God, of my kingdom, and of my people.\n"; #endif #ifndef CONFIG_EXAMPLES_USBSERIAL_INONLY static char g_iobuffer[IOBUFFER_SIZE]; #endif /**************************************************************************** * Private Functions ****************************************************************************/ #ifdef CONFIG_USBDEV_TRACE static int trace_callback(struct usbtrace_s *trace, void *arg) { usbtrace_trprintf((trprintf_t)trmessage, trace->event, trace->value); return 0; } static void dumptrace(void) { (void)usbtrace_enumerate(trace_callback, NULL); } #else # define dumptrace() #endif /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * user_initialize ****************************************************************************/ #ifndef CONFIG_HAVE_WEAKFUNCTIONS void user_initialize(void) { /* Stub that must be provided only if the toolchain does not support weak * functions. */ } #endif /**************************************************************************** * user_start ****************************************************************************/ int user_start(int argc, char *argv[]) { #ifndef CONFIG_EXAMPLES_USBSERIAL_INONLY int infd; #endif #ifndef CONFIG_EXAMPLES_USBSERIAL_OUTONLY int outfd; #endif #ifdef COUNTER_NEEDED int count = 0; #endif ssize_t nbytes; #ifndef CONFIG_EXAMPLES_USBSERIAL_INONLY int i, j, k; #endif int ret; /* Initialize the USB serial driver */ message("user_start: Registering USB serial driver\n"); ret = usbdev_serialinitialize(0); if (ret < 0) { message("user_start: ERROR: Failed to create the USB serial device: %d\n", -ret); return 1; } message("user_start: Successfully registered the serial driver\n"); #if CONFIG_USBDEV_TRACE && CONFIG_USBDEV_TRACE_INITIALIDSET != 0 /* If USB tracing is enabled and tracing of initial USB events is specified, * then dump all collected trace data to stdout */ sleep(5); dumptrace(); #endif /* Then, in any event, configure trace data collection as configured */ usbtrace_enable(TRACE_BITSET); /* Open the USB serial device for writing (blocking) */ #ifndef CONFIG_EXAMPLES_USBSERIAL_OUTONLY do { message("user_start: Opening USB serial driver\n"); outfd = open("/dev/ttyUSB0", O_WRONLY); if (outfd < 0) { int errcode = errno; message("user_start: ERROR: Failed to open /dev/ttyUSB0 for writing: %d\n", errcode); /* ENOTCONN means that the USB device is not yet connected */ if (errcode == ENOTCONN) { message("user_start: Not connected. Wait and try again.\n"); sleep(5); } else { /* Give up on other errors */ message("user_start: Aborting\n"); return 2; } } /* If USB tracing is enabled, then dump all collected trace data to stdout */ dumptrace(); } while (outfd < 0); #endif /* Open the USB serial device for reading (non-blocking) */ #ifndef CONFIG_EXAMPLES_USBSERIAL_INONLY #ifndef CONFIG_EXAMPLES_USBSERIAL_OUTONLY infd = open("/dev/ttyUSB0", O_RDONLY|O_NONBLOCK); if (infd < 0) { message("user_start: ERROR: Failed to open /dev/ttyUSB0 for reading: %d\n", errno); close(outfd); return 3; } #else do { infd = open("/dev/ttyUSB0", O_RDONLY|O_NONBLOCK); if (infd < 0) { int errcode = errno; message("user_start: ERROR: Failed to open /dev/ttyUSB0 for reading: %d\n", errno); /* ENOTCONN means that the USB device is not yet connected */ if (errcode == ENOTCONN) { message("user_start: Not connected. Wait and try again.\n"); sleep(5); } else { /* Give up on other errors */ message("user_start: Aborting\n"); return 3; } } /* If USB tracing is enabled, then dump all collected trace data to stdout */ dumptrace(); } while (infd < 0); #endif #endif message("user_start: Successfully opened the serial driver\n"); /* Send messages and get responses -- forever */ for (;;) { /* Test IN (device-to-host) messages */ #ifndef CONFIG_EXAMPLES_USBSERIAL_OUTONLY #if !defined(CONFIG_EXAMPLES_USBSERIAL_ONLYBIG) && !defined(CONFIG_EXAMPLES_USBSERIAL_ONLYSMALL) if (count < 8) { message("user_start: Saying hello\n"); nbytes = write(outfd, g_shortmsg, sizeof(g_shortmsg)); count++; } else { message("user_start: Reciting QEI's speech of 1588\n"); nbytes = write(outfd, g_longmsg, sizeof(g_longmsg)); count = 0; } #elif !defined(CONFIG_EXAMPLES_USBSERIAL_ONLYSMALL) message("user_start: Reciting QEI's speech of 1588\n"); nbytes = write(outfd, g_longmsg, sizeof(g_longmsg)); #else /* !defined(CONFIG_EXAMPLES_USBSERIAL_ONLYBIG) */ message("user_start: Saying hello\n"); nbytes = write(outfd, g_shortmsg, sizeof(g_shortmsg)); #endif /* Test if the write was successful */ if (nbytes < 0) { message("user_start: ERROR: write failed: %d\n", errno); #ifndef CONFIG_EXAMPLES_USBSERIAL_INONLY close(infd); #endif close(outfd); return 4; } message("user_start: %d bytes sent\n", nbytes); #endif /* CONFIG_EXAMPLES_USBSERIAL_OUTONLY */ /* Test OUT (host-to-device) messages */ #ifndef CONFIG_EXAMPLES_USBSERIAL_INONLY /* Poll for incoming messages */ message("user_start: Polling for OUT messages\n"); for (i = 0; i < 5; i++) { memset(g_iobuffer, 'X', IOBUFFER_SIZE); nbytes = read(infd, g_iobuffer, IOBUFFER_SIZE); if (nbytes < 0) { int errorcode = errno; if (errorcode != EAGAIN) { message("user_start: ERROR: read failed: %d\n", errno); close(infd); #ifndef CONFIG_EXAMPLES_USBSERIAL_OUTONLY close(outfd); #endif return 6; } } else { message("user_start: Received %d bytes:\n", nbytes); if (nbytes > 0) { for (j = 0; j < nbytes; j += 16) { message("user_start: %03x: ", j); for (k = 0; k < 16; k++) { if (k == 8) { message(" "); } if (j+k < nbytes) { message("%02x", g_iobuffer[j+k]); } else { message(" "); } } message(" "); for (k = 0; k < 16; k++) { if (k == 8) { message(" "); } if (j+k < nbytes) { if (g_iobuffer[j+k] >= 0x20 && g_iobuffer[j+k] < 0x7f) { message("%c", g_iobuffer[j+k]); } else { message("."); } } else { message(" "); } } message("\n"); } } } sleep(1); } #else /* CONFIG_EXAMPLES_USBSERIAL_INONLY */ message("user_start: Waiting\n"); sleep(5); #endif /* CONFIG_EXAMPLES_USBSERIAL_INONLY */ /* If USB tracing is enabled, then dump all collected trace data to stdout */ dumptrace(); } /* Won't get here, but if we did this what we would have to do */ #ifndef CONFIG_EXAMPLES_USBSERIAL_INONLY close(infd); #endif #ifndef CONFIG_EXAMPLES_USBSERIAL_OUTONLY close(outfd); #endif return 0; }