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nuttx-apps/examples/usbserial/usbserial_main.c
Xiang Xiao 857158451b Unify the void cast usage 
1.Remove void cast for function because many place ignore the returned value witout cast
2.Replace void cast for variable with UNUSED macro

Change-Id: Ie644129a563244a6397036789c4c3ea83c4e9b09
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-01-02 23:21:01 +08:00

486 lines
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/****************************************************************************
* examples/usbserial/usbserial_main.c
*
* Copyright (C) 2008, 2010-2012, 2015-2016 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 <nuttx/config.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/boardctl.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/usb/usbdev.h>
#include <nuttx/usb/usbdev_trace.h>
#ifdef CONFIG_CDCACM
# include <nuttx/usb/cdcacm.h>
#endif
/****************************************************************************
* Pre-processor 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
#ifndef CONFIG_USBDEV_TRACE_INITIALIDSET
# define CONFIG_USBDEV_TRACE_INITIALIDSET 0
#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_CDCACM
# define USBSER_DEVNAME "/dev/ttyACM0"
#else
# define USBSER_DEVNAME "/dev/ttyUSB0"
#endif
#ifndef CONFIG_EXAMPLES_USBSERIAL_BUFSIZE
# define CONFIG_EXAMPLES_USBSERIAL_BUFSIZE 256
#endif
/****************************************************************************
* 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[CONFIG_EXAMPLES_USBSERIAL_BUFSIZE];
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
#ifdef CONFIG_USBDEV_TRACE
static int trace_callback(struct usbtrace_s *trace, void *arg)
{
usbtrace_trprintf((trprintf_t)printf, trace->event, trace->value);
return 0;
}
static void dumptrace(void)
{
usbtrace_enumerate(trace_callback, NULL);
}
#else
# define dumptrace()
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* usbserial_main
****************************************************************************/
int main(int argc, FAR char *argv[])
{
struct boardioc_usbdev_ctrl_s ctrl;
FAR void *handle;
#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 */
printf("usbserial_main: Registering USB serial driver\n");
#ifdef CONFIG_CDCACM
ctrl.usbdev = BOARDIOC_USBDEV_CDCACM;
ctrl.action = BOARDIOC_USBDEV_CONNECT;
ctrl.instance = 0;
ctrl.handle = &handle;
#else
ctrl.usbdev = BOARDIOC_USBDEV_PL2303;
ctrl.action = BOARDIOC_USBDEV_CONNECT;
ctrl.instance = 0;
ctrl.handle = &handle;
#endif
ret = boardctl(BOARDIOC_USBDEV_CONTROL, (uintptr_t)&ctrl);
if (ret < 0)
{
printf("usbserial_main: ERROR: Failed to create the USB serial device: %d\n",
-ret);
return 1;
}
printf("usbserial_main: Successfully registered the serial driver\n");
#if defined(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
{
printf("usbserial_main: Opening USB serial driver\n");
outfd = open(USBSER_DEVNAME, O_WRONLY);
if (outfd < 0)
{
int errcode = errno;
printf("usbserial_main: ERROR: Failed to open " USBSER_DEVNAME
" for writing: %d\n", errcode);
/* ENOTCONN means that the USB device is not yet connected */
if (errcode == ENOTCONN)
{
printf("usbserial_main: Not connected. Wait and try again.\n");
sleep(5);
}
else
{
/* Give up on other errors */
printf("usbserial_main: 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(USBSER_DEVNAME, O_RDONLY|O_NONBLOCK);
if (infd < 0)
{
printf("usbserial_main: ERROR: Failed to open " USBSER_DEVNAME
" for reading: %d\n", errno);
close(outfd);
return 3;
}
#else
do
{
infd = open(USBSER_DEVNAME, O_RDONLY|O_NONBLOCK);
if (infd < 0)
{
int errcode = errno;
printf("usbserial_main: ERROR: Failed to open " USBSER_DEVNAME
" for reading: %d\n", errno);
/* ENOTCONN means that the USB device is not yet connected */
if (errcode == ENOTCONN)
{
printf("usbserial_main: Not connected. Wait and try again.\n");
sleep(5);
}
else
{
/* Give up on other errors */
printf("usbserial_main: Aborting\n");
return 3;
}
}
/* If USB tracing is enabled, then dump all collected trace data to stdout */
dumptrace();
}
while (infd < 0);
#endif
#endif
printf("usbserial_main: 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)
{
printf("usbserial_main: Saying hello\n");
nbytes = write(outfd, g_shortmsg, sizeof(g_shortmsg));
count++;
}
else
{
printf("usbserial_main: Reciting QEI's speech of 1588\n");
nbytes = write(outfd, g_longmsg, sizeof(g_longmsg));
count = 0;
}
#elif !defined(CONFIG_EXAMPLES_USBSERIAL_ONLYSMALL)
printf("usbserial_main: Reciting QEI's speech of 1588\n");
nbytes = write(outfd, g_longmsg, sizeof(g_longmsg));
#else /* !defined(CONFIG_EXAMPLES_USBSERIAL_ONLYBIG) */
printf("usbserial_main: Saying hello\n");
nbytes = write(outfd, g_shortmsg, sizeof(g_shortmsg));
#endif
/* Test if the write was successful */
if (nbytes < 0)
{
printf("usbserial_main: ERROR: write failed: %d\n", errno);
#ifndef CONFIG_EXAMPLES_USBSERIAL_INONLY
close(infd);
#endif
close(outfd);
return 4;
}
printf("usbserial_main: %ld bytes sent\n", (long)nbytes);
#endif /* CONFIG_EXAMPLES_USBSERIAL_OUTONLY */
/* Test OUT (host-to-device) messages */
#ifndef CONFIG_EXAMPLES_USBSERIAL_INONLY
/* Poll for incoming messages */
printf("usbserial_main: Polling for OUT messages\n");
for (i = 0; i < 5; i++)
{
memset(g_iobuffer, 'X', CONFIG_EXAMPLES_USBSERIAL_BUFSIZE);
nbytes = read(infd, g_iobuffer, CONFIG_EXAMPLES_USBSERIAL_BUFSIZE);
if (nbytes < 0)
{
int errorcode = errno;
if (errorcode != EAGAIN)
{
printf("usbserial_main: ERROR: read failed: %d\n", errno);
close(infd);
#ifndef CONFIG_EXAMPLES_USBSERIAL_OUTONLY
close(outfd);
#endif
return 6;
}
}
else
{
printf("usbserial_main: Received %ld bytes:\n", (long)nbytes);
if (nbytes > 0)
{
for (j = 0; j < nbytes; j += 16)
{
printf("usbserial_main: %03x: ", j);
for (k = 0; k < 16; k++)
{
if (k == 8)
{
printf(" ");
}
if (j+k < nbytes)
{
printf("%02x", g_iobuffer[j+k]);
}
else
{
printf(" ");
}
}
printf(" ");
for (k = 0; k < 16; k++)
{
if (k == 8)
{
printf(" ");
}
if (j+k < nbytes)
{
if (g_iobuffer[j+k] >= 0x20 && g_iobuffer[j+k] < 0x7f)
{
printf("%c", g_iobuffer[j+k]);
}
else
{
printf(".");
}
}
else
{
printf(" ");
}
}
printf("\n");
}
}
}
sleep(1);
}
#else /* CONFIG_EXAMPLES_USBSERIAL_INONLY */
printf("usbserial_main: 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;
}
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