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Diffstat (limited to 'apps/system/composite/composite_main.c')
-rw-r--r-- | apps/system/composite/composite_main.c | 850 |
1 files changed, 850 insertions, 0 deletions
diff --git a/apps/system/composite/composite_main.c b/apps/system/composite/composite_main.c new file mode 100644 index 000000000..b34d38b99 --- /dev/null +++ b/apps/system/composite/composite_main.c @@ -0,0 +1,850 @@ +/**************************************************************************** + * system/composite/composite_main.c + * + * Copyright (C) 2012-2013 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 <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> +#include <errno.h> +#include <debug.h> + +#include <nuttx/usb/usbdev.h> +#include <nuttx/usb/composite.h> +#include <nuttx/usb/cdcacm.h> +#include <nuttx/usb/usbmsc.h> +#include <nuttx/usb/usbdev_trace.h> + +#include "composite.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/* All global variables used by this add-on are packed into a structure in + * order to avoid name collisions. + */ + +struct composite_state_s g_composite; + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: show_memory_usage + ****************************************************************************/ + +#ifdef CONFIG_SYSTEM_COMPOSITE_DEBUGMM +static void show_memory_usage(struct mallinfo *mmbefore, + struct mallinfo *mmafter) +{ + int diff; + + message(" total used free largest\n"); + message("Before:%11d%11d%11d%11d\n", + mmbefore->arena, mmbefore->uordblks, mmbefore->fordblks, mmbefore->mxordblk); + message("After: %11d%11d%11d%11d\n", + mmafter->arena, mmafter->uordblks, mmafter->fordblks, mmafter->mxordblk); + + diff = mmbefore->uordblks - mmafter->uordblks; + if (diff < 0) + { + message("Change:%11d allocated\n", -diff); + } + else if (diff > 0) + { + message("Change:%11d freed\n", diff); + } +} +#else +# define show_memory_usage(mm1, mm2) +#endif + +/**************************************************************************** + * Name: check_test_memory_usage + ****************************************************************************/ + +#ifdef CONFIG_SYSTEM_COMPOSITE_DEBUGMM +static void check_test_memory_usage(FAR const char *msg) +{ + /* Get the current memory usage */ + +#ifdef CONFIG_CAN_PASS_STRUCTS + g_composite.mmcurrent = mallinfo(); +#else + (void)mallinfo(&g_composite.mmcurrent); +#endif + + /* Show the change from the previous time */ + + message("\%s:\n", msg); + show_memory_usage(&g_composite.mmprevious, &g_composite.mmcurrent); + + /* Set up for the next test */ + +#ifdef CONFIG_CAN_PASS_STRUCTS + g_composite.mmprevious = g_composite.mmcurrent; +#else + memcpy(&g_composite.mmprevious, &g_composite.mmcurrent, sizeof(struct mallinfo)); +#endif +} +#else +# define check_test_memory_usage(msg) +#endif + +/**************************************************************************** + * Name: check_test_memory_usage + ****************************************************************************/ + +#ifdef CONFIG_SYSTEM_COMPOSITE_DEBUGMM +static void final_memory_usage(FAR const char *msg) +{ + /* Get the current memory usage */ + +#ifdef CONFIG_CAN_PASS_STRUCTS + g_composite.mmcurrent = mallinfo(); +#else + (void)mallinfo(&g_composite.mmcurrent); +#endif + + /* Show the change from the previous time */ + + message("\n%s:\n", msg); + show_memory_usage(&g_composite.mmstart, &g_composite.mmcurrent); +} +#else +# define final_memory_usage(msg) +#endif + +/**************************************************************************** + * Name: composite_enumerate + ****************************************************************************/ + +#ifdef CONFIG_USBDEV_TRACE +static int composite_enumerate(struct usbtrace_s *trace, void *arg) +{ + switch (trace->event) + { + case TRACE_DEVINIT: + message("USB controller initialization: %04x\n", trace->value); + break; + + case TRACE_DEVUNINIT: + message("USB controller un-initialization: %04x\n", trace->value); + break; + + case TRACE_DEVREGISTER: + message("usbdev_register(): %04x\n", trace->value); + break; + + case TRACE_DEVUNREGISTER: + message("usbdev_unregister(): %04x\n", trace->value); + break; + + case TRACE_EPCONFIGURE: + message("Endpoint configure(): %04x\n", trace->value); + break; + + case TRACE_EPDISABLE: + message("Endpoint disable(): %04x\n", trace->value); + break; + + case TRACE_EPALLOCREQ: + message("Endpoint allocreq(): %04x\n", trace->value); + break; + + case TRACE_EPFREEREQ: + message("Endpoint freereq(): %04x\n", trace->value); + break; + + case TRACE_EPALLOCBUFFER: + message("Endpoint allocbuffer(): %04x\n", trace->value); + break; + + case TRACE_EPFREEBUFFER: + message("Endpoint freebuffer(): %04x\n", trace->value); + break; + + case TRACE_EPSUBMIT: + message("Endpoint submit(): %04x\n", trace->value); + break; + + case TRACE_EPCANCEL: + message("Endpoint cancel(): %04x\n", trace->value); + break; + + case TRACE_EPSTALL: + message("Endpoint stall(true): %04x\n", trace->value); + break; + + case TRACE_EPRESUME: + message("Endpoint stall(false): %04x\n", trace->value); + break; + + case TRACE_DEVALLOCEP: + message("Device allocep(): %04x\n", trace->value); + break; + + case TRACE_DEVFREEEP: + message("Device freeep(): %04x\n", trace->value); + break; + + case TRACE_DEVGETFRAME: + message("Device getframe(): %04x\n", trace->value); + break; + + case TRACE_DEVWAKEUP: + message("Device wakeup(): %04x\n", trace->value); + break; + + case TRACE_DEVSELFPOWERED: + message("Device selfpowered(): %04x\n", trace->value); + break; + + case TRACE_DEVPULLUP: + message("Device pullup(): %04x\n", trace->value); + break; + + case TRACE_CLASSBIND: + message("Class bind(): %04x\n", trace->value); + break; + + case TRACE_CLASSUNBIND: + message("Class unbind(): %04x\n", trace->value); + break; + + case TRACE_CLASSDISCONNECT: + message("Class disconnect(): %04x\n", trace->value); + break; + + case TRACE_CLASSSETUP: + message("Class setup(): %04x\n", trace->value); + break; + + case TRACE_CLASSSUSPEND: + message("Class suspend(): %04x\n", trace->value); + break; + + case TRACE_CLASSRESUME: + message("Class resume(): %04x\n", trace->value); + break; + + case TRACE_CLASSRDCOMPLETE: + message("Class RD request complete: %04x\n", trace->value); + break; + + case TRACE_CLASSWRCOMPLETE: + message("Class WR request complete: %04x\n", trace->value); + break; + + default: + switch (TRACE_ID(trace->event)) + { + case TRACE_CLASSAPI_ID: /* Other class driver system API calls */ + message("Class API call %d: %04x\n", TRACE_DATA(trace->event), trace->value); + break; + + case TRACE_CLASSSTATE_ID: /* Track class driver state changes */ + message("Class state %d: %04x\n", TRACE_DATA(trace->event), trace->value); + break; + + case TRACE_INTENTRY_ID: /* Interrupt handler entry */ + message("Interrrupt %d entry: %04x\n", TRACE_DATA(trace->event), trace->value); + break; + + case TRACE_INTDECODE_ID: /* Decoded interrupt trace->event */ + message("Interrrupt decode %d: %04x\n", TRACE_DATA(trace->event), trace->value); + break; + + case TRACE_INTEXIT_ID: /* Interrupt handler exit */ + message("Interrrupt %d exit: %04x\n", TRACE_DATA(trace->event), trace->value); + break; + + case TRACE_OUTREQQUEUED_ID: /* Request queued for OUT endpoint */ + message("EP%d OUT request queued: %04x\n", TRACE_DATA(trace->event), trace->value); + break; + + case TRACE_INREQQUEUED_ID: /* Request queued for IN endpoint */ + message("EP%d IN request queued: %04x\n", TRACE_DATA(trace->event), trace->value); + break; + + case TRACE_READ_ID: /* Read (OUT) action */ + message("EP%d OUT read: %04x\n", TRACE_DATA(trace->event), trace->value); + break; + + case TRACE_WRITE_ID: /* Write (IN) action */ + message("EP%d IN write: %04x\n", TRACE_DATA(trace->event), trace->value); + break; + + case TRACE_COMPLETE_ID: /* Request completed */ + message("EP%d request complete: %04x\n", TRACE_DATA(trace->event), trace->value); + break; + + case TRACE_DEVERROR_ID: /* USB controller driver error event */ + message("Controller error: %02x:%04x\n", TRACE_DATA(trace->event), trace->value); + break; + + case TRACE_CLSERROR_ID: /* USB class driver error event */ + message("Class error: %02x:%04x\n", TRACE_DATA(trace->event), trace->value); + break; + + default: + message("Unrecognized event: %02x:%02x:%04x\n", + TRACE_ID(trace->event) >> 8, TRACE_DATA(trace->event), trace->value); + break; + } + } + return OK; +} +#endif + +/**************************************************************************** + * Name: dumptrace + * + * Description: + * Dump collected trace data. + * + ****************************************************************************/ + +#ifdef CONFIG_USBDEV_TRACE +static int dumptrace(void) +{ + int ret; + + ret = usbtrace_enumerate(composite_enumerate, NULL); + if (ret < 0) + { + message("dumptrace: usbtrace_enumerate failed: %d\n", -ret); + } + return ret; +} +#else +# define dumptrace() (OK) +#endif + +/**************************************************************************** + * Name: open_serial + ****************************************************************************/ + +#if !defined(CONFIG_NSH_BUILTIN_APPS) && !defined(CONFIG_DISABLE_SIGNALS) +static int open_serial(void) +{ + int errcode; +#ifdef CONFIG_USBDEV_TRACE + int ret; +#endif + + /* Open the USB serial device for writing (blocking) */ + + do + { + message("open_serial: Opening USB serial driver\n"); + g_composite.outfd = open(CONFIG_SYSTEM_COMPOSITE_SERDEV, O_WRONLY); + if (g_composite.outfd < 0) + { + errcode = errno; + message("open_serial: ERROR: Failed to open %s for writing: %d\n", + CONFIG_SYSTEM_COMPOSITE_SERDEV, errcode); + + /* ENOTCONN means that the USB device is not yet connected */ + + if (errcode == ENOTCONN) + { + message("open_serial: Not connected. Wait and try again.\n"); + sleep(5); + } + else + { + /* Give up on other errors */ + + message("open_serial: Aborting\n"); + return -errcode; + } + } + + /* If USB tracing is enabled, then dump all collected trace data to + * stdout. + */ + +#ifdef CONFIG_USBDEV_TRACE + ret = dumptrace(); + if (ret < 0) + { + return ret; + } +#endif + } + while (g_composite.outfd < 0); + + /* Open the USB serial device for reading (non-blocking) */ + + g_composite.infd = open(CONFIG_SYSTEM_COMPOSITE_SERDEV, O_RDONLY|O_NONBLOCK); + if (g_composite.infd < 0) + { + errcode = errno; + message("open_serial: ERROR: Failed to open%s for reading: %d\n", + CONFIG_SYSTEM_COMPOSITE_SERDEV, errcode); + close(g_composite.outfd); + return -errcode; + } + + message("open_serial: Successfully opened the serial driver\n"); + return OK; +} +#endif + +/**************************************************************************** + * Name: echo_serial + ****************************************************************************/ + +static int echo_serial(void) +{ + ssize_t bytesread; + ssize_t byteswritten; + int errcode; + + /* Read data */ + + bytesread = read(g_composite.infd, g_composite.serbuf, CONFIG_SYSTEM_COMPOSITE_BUFSIZE); + if (bytesread < 0) + { + errcode = errno; + if (errcode != EAGAIN) + { + message("echo_serial: ERROR: read failed: %d\n", errcode); + return -errcode; + } + return OK; + } + + /* Echo data */ + + byteswritten = write(g_composite.outfd, g_composite.serbuf, bytesread); + if (byteswritten < 0) + { + errcode = errno; + message("echo_serial: ERROR: write failed: %d\n", errcode); + return -errcode; + } + else if (byteswritten != bytesread) + { + message("echo_serial: ERROR: read size: %d write size: %d\n", + bytesread, byteswritten); + } + return OK; +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: board_mscclassobject + * + * Description: + * If the mass storage class driver is part of composite device, then + * its instantiation and configuration is a multi-step, board-specific, + * process (See comments for usbmsc_configure below). In this case, + * board-specific logic must provide board_mscclassobject(). + * + * board_mscclassobject() is called from the composite driver. It must + * encapsulate the instantiation and configuration of the mass storage + * class and the return the mass storage device's class driver instance + * to the composite dirver. + * + * Input Parameters: + * classdev - The location to return the mass storage class' device + * instance. + * + * Returned Value: + * 0 on success; a negated errno on failure + * + ****************************************************************************/ + +int board_mscclassobject(FAR struct usbdevclass_driver_s **classdev) +{ + int ret; + + DEBUGASSERT(g_composite.mschandle == NULL); + + /* Initialize USB trace output IDs */ + + usbtrace_enable(TRACE_BITSET); + check_test_memory_usage("After usbtrace_enable()"); + + /* Configure the mass storage device */ + + message("board_mscclassobject: Configuring with NLUNS=%d\n", CONFIG_SYSTEM_COMPOSITE_NLUNS); + ret = usbmsc_configure(CONFIG_SYSTEM_COMPOSITE_NLUNS, &g_composite.mschandle); + if (ret < 0) + { + message("board_mscclassobject: usbmsc_configure failed: %d\n", -ret); + return ret; + } + message("board_mscclassobject: MSC handle=%p\n", g_composite.mschandle); + check_test_memory_usage("After usbmsc_configure()"); + + /* Bind the LUN(s) */ + + message("board_mscclassobject: Bind LUN=0 to %s\n", CONFIG_SYSTEM_COMPOSITE_DEVPATH1); + ret = usbmsc_bindlun(g_composite.mschandle, CONFIG_SYSTEM_COMPOSITE_DEVPATH1, 0, 0, 0, false); + if (ret < 0) + { + message("board_mscclassobject: usbmsc_bindlun failed for LUN 1 using %s: %d\n", + CONFIG_SYSTEM_COMPOSITE_DEVPATH1, -ret); + usbmsc_uninitialize(g_composite.mschandle); + return ret; + } + check_test_memory_usage("After usbmsc_bindlun()"); + +#if CONFIG_SYSTEM_COMPOSITE_NLUNS > 1 + + message("board_mscclassobject: Bind LUN=1 to %s\n", CONFIG_SYSTEM_COMPOSITE_DEVPATH2); + ret = usbmsc_bindlun(g_composite.mschandle, CONFIG_SYSTEM_COMPOSITE_DEVPATH2, 1, 0, 0, false); + if (ret < 0) + { + message("board_mscclassobject: usbmsc_bindlun failed for LUN 2 using %s: %d\n", + CONFIG_SYSTEM_COMPOSITE_DEVPATH2, -ret); + usbmsc_uninitialize(g_composite.mschandle); + return ret; + } + check_test_memory_usage("After usbmsc_bindlun() #2"); + +#if CONFIG_SYSTEM_COMPOSITE_NLUNS > 2 + + message("board_mscclassobject: Bind LUN=2 to %s\n", CONFIG_SYSTEM_COMPOSITE_DEVPATH3); + ret = usbmsc_bindlun(g_composite.mschandle, CONFIG_SYSTEM_COMPOSITE_DEVPATH3, 2, 0, 0, false); + if (ret < 0) + { + message("board_mscclassobject: usbmsc_bindlun failed for LUN 3 using %s: %d\n", + CONFIG_SYSTEM_COMPOSITE_DEVPATH3, -ret); + usbmsc_uninitialize(g_composite.mschandle); + return ret; + } + check_test_memory_usage("After usbmsc_bindlun() #3"); + +#endif +#endif + + /* Get the mass storage device's class object */ + + ret = usbmsc_classobject(g_composite.mschandle, classdev); + if (ret < 0) + { + message("board_mscclassobject: usbmsc_classobject failed: %d\n", -ret); + usbmsc_uninitialize(g_composite.mschandle); + } + check_test_memory_usage("After usbmsc_classobject()"); + return ret; +} + +/**************************************************************************** + * Name: board_mscuninitialize + * + * Description: + * Un-initialize the USB storage class driver. This is just an application- + * specific wrapper aboutn usbmsc_unitialize() that is called form the composite + * device logic. + * + * Input Parameters: + * classdev - The class driver instrance previously give to the composite + * driver by board_mscclassobject(). + * + * Returned Value: + * None + * + ****************************************************************************/ + +void board_mscuninitialize(FAR struct usbdevclass_driver_s *classdev) +{ + DEBUGASSERT(g_composite.mschandle != NULL); + usbmsc_uninitialize(g_composite.mschandle); +} + +/**************************************************************************** + * Name: board_cdcclassobject + * + * Description: + * If the CDC serial class driver is part of composite device, then + * board-specific logic must provide board_cdcclassobject(). In the simplest + * case, board_cdcclassobject() is simply a wrapper around cdcacm_classobject() + * that provides the correct device minor number. + * + * Input Parameters: + * classdev - The location to return the CDC serial class' device + * instance. + * + * Returned Value: + * 0 on success; a negated errno on failure + * + ****************************************************************************/ + +int board_cdcclassobject(FAR struct usbdevclass_driver_s **classdev) +{ + int ret; + + /* Initialize the USB serial driver */ + + message("board_cdcclassobject: Initializing USB serial driver\n"); + ret = cdcacm_classobject(CONFIG_SYSTEM_COMPOSITE_TTYUSB, classdev); + if (ret < 0) + { + message("board_cdcclassobject: ERROR: Failed to create the USB serial device: %d\n", -ret); + } + return ret; +} + +/**************************************************************************** + * Name: board_cdcuninitialize + * + * Description: + * Un-initialize the USB serial class driver. This is just an application- + * specific wrapper aboutn cdcadm_unitialize() that is called form the composite + * device logic. + * + * Input Parameters: + * classdev - The class driver instrance previously give to the composite + * driver by board_cdcclassobject(). + * + * Returned Value: + * None + * + ****************************************************************************/ + +void board_cdcuninitialize(FAR struct usbdevclass_driver_s *classdev) +{ + DEBUGASSERT(classdev != NULL); + cdcacm_uninitialize(classdev); +} + +/**************************************************************************** + * conn_main + * + * Description: + * This is the main program that configures the USB mass storage device + * and exports the LUN(s). If CONFIG_NSH_BUILTIN_APPS is defined + * in the NuttX configuration, then this program can be executed by + * entering the "msconn" command at the NSH console. + * + ****************************************************************************/ + +int conn_main(int argc, char *argv[]) +{ + int ret; + + /* If this program is implemented as the NSH 'msconn' command, then we need to + * do a little error checking to assure that we are not being called re-entrantly. + */ + +#ifdef CONFIG_NSH_BUILTIN_APPS + + /* Check if there is a non-NULL USB mass storage device handle (meaning that the + * USB mass storage device is already configured). + */ + + if (g_composite.cmphandle) + { + message("conn_main: ERROR: Already connected\n"); + return 1; + } +#endif + +#ifdef CONFIG_SYSTEM_COMPOSITE_DEBUGMM +# ifdef CONFIG_CAN_PASS_STRUCTS + g_composite.mmstart = mallinfo(); + g_composite.mmprevious = g_composite.mmstart; +# else + (void)mallinfo(&g_composite.mmstart); + memcpy(&g_composite.mmprevious, &g_composite.mmstart, sizeof(struct mallinfo)); +# endif +#endif + + /* Perform architecture-specific initialization */ + + message("conn_main: Performing architecture-specific intialization\n"); + ret = composite_archinitialize(); + if (ret < 0) + { + message("conn_main: composite_archinitialize failed: %d\n", -ret); + return 1; + } + check_test_memory_usage("After composite_archinitialize()"); + + /* Initialize the USB composite device device */ + + g_composite.cmphandle = composite_initialize(); + if (!g_composite.cmphandle) + { + message("conn_main: composite_initialize failed\n"); + return 1; + } + check_test_memory_usage("After composite_initialize()"); + +#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); + ret = dumptrace(); + if (ret < 0) + { + goto errout; + } +#endif + + /* It this program was configued as an NSH command, then just exit now. + * Also, if signals are not enabled (and, hence, sleep() is not supported. + * then we have not real option but to exit now. + */ + +#if !defined(CONFIG_NSH_BUILTIN_APPS) && !defined(CONFIG_DISABLE_SIGNALS) + + /* Otherwise, this thread will hang around and monitor the USB activity */ + + /* Open the serial driver */ + + ret = open_serial(); + if (ret < 0) + { + goto errout; + } + + /* Now looping */ + + for (;;) + { + /* Sleep for a bit */ + + msgflush(); + sleep(5); + + /* Echo any serial data */ + + ret = echo_serial(); + if (ret < 0) + { + goto errout; + } + + /* Dump trace data */ + +# ifdef CONFIG_USBDEV_TRACE + message("\n" "conn_main: USB TRACE DATA:\n"); + ret = dumptrace(); + if (ret < 0) + { + goto errout; + } + check_test_memory_usage("After usbtrace_enumerate()"); +# else + message("conn_main: Still alive\n"); +# endif + } +#else + + message("conn_main: Connected\n"); + check_test_memory_usage("After composite device connection"); +#endif + + /* Dump debug memory usage */ + + message("conn_main: Exiting\n"); +#if !defined(CONFIG_NSH_BUILTIN_APPS) && !defined(CONFIG_DISABLE_SIGNALS) + close(g_composite.infd); + close(g_composite.outfd); +#endif +#ifdef CONFIG_NSH_BUILTIN_APPS +#endif + final_memory_usage("Final memory usage"); + return 0; + +errout: +#if !defined(CONFIG_NSH_BUILTIN_APPS) && !defined(CONFIG_DISABLE_SIGNALS) + close(g_composite.infd); + close(g_composite.outfd); +#endif + composite_uninitialize(g_composite.cmphandle); + final_memory_usage("Final memory usage"); + return 1; +} + +/**************************************************************************** + * disconn_main + * + * Description: + * This is a program entry point that will disconnet the USB mass storage + * device. This program is only available if CONFIG_NSH_BUILTIN_APPS + * is defined in the NuttX configuration. In that case, this program can + * be executed by entering the "msdis" command at the NSH console. + * + ****************************************************************************/ + +#ifdef CONFIG_NSH_BUILTIN_APPS +int disconn_main(int argc, char *argv[]) +{ + /* First check if the USB mass storage device is already connected */ + + if (!g_composite.cmphandle) + { + message("disconn_main: ERROR: Not connected\n"); + return 1; + } + check_test_memory_usage("Since MS connection"); + + /* Then disconnect the device and uninitialize the USB mass storage driver */ + + composite_uninitialize(g_composite.cmphandle); + g_composite.mschandle = NULL; + message("disconn_main: Disconnected\n"); + check_test_memory_usage("After composite_uninitialize()"); + + /* Dump debug memory usage */ + + final_memory_usage("Final memory usage"); + return 0; +} +#endif |