Add support for USB device testing on the PIC32 starter kit

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4463 7fd9a85b-ad96-42d3-883c-3090e2eb8679

nuttx/configs/pic32-starterkit/README.txt

@@ -996,3 +996,42 @@ Where <subdir> is one of the following:
     been unable to get this UART work on the MEB.  But on the Expansion
     I/O board, this maps to RX = J11 pin 41 and TX = J11 pin 43
 
+    USB Configuations.
+    -----------------
+    Several USB device configurations can be enabled and included
+    as NSH built-in built in functions.  
+
+    To use USB device, connect the starter kit to the host using a cable
+    with a Type-B micro-plug to the starter kit’s micro-A/B port J5, located
+    on the bottom side of the starter kit. The other end of the cable
+    must have a Type-A plug. Connect it to a USB host. Jumper JP2 should be
+    removed.
+
+    All USB device configurations require the following basic setup in
+    your NuttX configuration file to enable USB device support:
+ 
+      CONFIG_USBDEV=y         : Enable basic USB device support
+      CONFIG_PIC32MX_USBDEV=y : Enable PIC32 USB device support
+
+    examples/usbterm - This option can be enabled by uncommenting
+    the following line in the appconfig file:
+
+      CONFIGURED_APPS += examples/usbterm
+
+    And by enabling one of the USB serial devices:
+
+      CONFIG_PL2303=y         : Enable the Prolifics PL2303 emulation
+      CONFIG_CDCACM=y         : or the CDC/ACM serial driver (not both)
+
+    examples/cdcacm -  The examples/cdcacm program can be included as an 
+    function by uncommenting the following line in the appconfig file:
+    
+      CONFIGURED_APPS += examples/cdcacm
+
+    and defining the following in your .config file:
+
+      CONFIG_CDCACM=y         : Enable the CDCACM device
+
+    examples/usbstorage - There are some hooks in the appconfig file
+    to enable the USB mass storage device.  However, this device cannot
+    work until support for the SD card is also incorporated.

nuttx/configs/pic32-starterkit/src/Makefile

@@ -40,6 +40,13 @@ CFLAGS		+= -I$(TOPDIR)/sched
 ASRCS		= 
 CSRCS		= up_boot.c up_leds.c up_spi.c
 
+ifeq ($(CONFIG_PIC32MX_USBDEV),y)
+CSRCS		+= up_usbdev.c
+ifeq ($(CONFIG_EXAMPLES_USBTERM_DEVINIT),y)
+CSRCS		+= up_usbterm.c
+endif
+endif
+
 ifeq ($(CONFIG_NSH_ARCHINIT),y)
 CSRCS		+= up_nsh.c
 endif

nuttx/configs/pic32-starterkit/src/up_nsh.c

@@ -64,12 +64,12 @@
 #  define CONFIG_NSH_HAVEMMCSD   1
 #  define CONFIG_NSH_HAVEUSBHOST 1
 #  if !defined(CONFIG_NSH_MMCSDSPIPORTNO) || CONFIG_NSH_MMCSDSPIPORTNO != 1
-#    error "The Sure PIC32MX MMC/SD is on SPI2"
+#    error "The PIC32 Starter Kit MMC/SD is on SPI2"
 #    undef CONFIG_NSH_MMCSDSPIPORTNO
 #    define CONFIG_NSH_MMCSDSPIPORTNO 2
 #  endif
 #  if !defined(CONFIG_NSH_MMCSDSLOTNO) || CONFIG_NSH_MMCSDSLOTNO != 0
-#    error "The Sure PIC32MX MMC/SD is only one slot (0)"
+#    error "The PIC32 Starter Kit has only one slot (0)"
 #    undef CONFIG_NSH_MMCSDSLOTNO
 #    define CONFIG_NSH_MMCSDSLOTNO 0
 #  endif
@@ -293,6 +293,28 @@ static int nsh_usbhostinitialize(void)
 #  define nsh_usbhostinitialize() (OK)
 #endif
 
+/****************************************************************************
+ * Name: nsh_usbdevinitialize
+ *
+ * Description:
+ *   Initialize SPI-based microSD.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_USBDEV
+static int nsh_usbdevinitialize(void)
+{
+  /* The PIC32 Starter Kit has no way to know when the USB is connected.  So
+   * we will fake it and tell the USB driver that the USB is connected now.
+   */
+
+  pic32mx_usbattach();
+  return OK;
+}
+#else
+#  define nsh_usbdevinitialize() (OK)
+#endif
+
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -318,5 +340,12 @@ int nsh_archinitialize(void)
 
       ret = nsh_usbhostinitialize();
     }
+
+  if (ret == OK)
+    {
+      /* Initialize USB device */
+
+      ret = nsh_usbdevinitialize();
+    }
   return ret;
 }

nuttx/configs/pic32-starterkit/src/up_usbdev.c

@@ -0,0 +1,163 @@
+/************************************************************************************
+ * configs/pic32-starterkit/src/up_usbdev.c
+ * arch/arm/src/board/up_usbdev.c
+ *
+ *   Copyright (C) 2012 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 <stdbool.h>
+#include <debug.h>
+
+#include <nuttx/usb/usbdev.h>
+
+#include "pic32mx-internal.h"
+#include "starterkit_internal.h"
+
+#if defined(CONFIG_PIC32MX_USBDEV)
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+/*
+ * PIN  NAME                            SIGNAL         NOTES
+ * ---- ------------------------------- -------------- ------------------------------
+ *  20  VBUSON/C1IN+/AN5/CN7/RB5        VBUSON         To USB VBUS circuitry
+ *  43  C2IN+/AN3/CN5/RB3               USB_PGOOD      Power good (low if bad)
+ */
+
+#define GPIO_USB_VBUSON (GPIO_INPUT|GPIO_PORTB|GPIO_PIN5)
+#define GPIO_USB_PGOOD  (GPIO_INPUT|GPIO_PORTB|GPIO_PIN3)
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: pic32mx_usbdevinitialize
+ *
+ * Description:
+ *   Called to configure the mini-A/B J5 on the PIC32 Ethernet Starter Kit for the
+ *   USB device
+ *
+ ************************************************************************************/
+
+void weak_function pic32mx_usbdevinitialize(void)
+{
+  /* Connect the PHY to the USB mini-B port.  Order and timing matter! */
+
+  pic32mx_configgpio(GPIO_USB_PGOOD);
+
+  /* Notes from the Sure Electronics sample code:
+   *
+   * "The USB specifications require that USB peripheral devices must never source
+   *  current onto the Vbus pin.  Additionally, USB peripherals should not source
+   *  current on D+ or D- when the host/hub is not actively powering the Vbus line.
+   *  When designing a self powered (as opposed to bus powered) USB peripheral
+   *  device, the firmware should make sure not to turn on the USB module and D+
+   *  or D- pull up resistor unless Vbus is actively powered.  Therefore, the
+   *  firmware needs some means to detect when Vbus is being powered by the host.
+   *  A 5V tolerant I/O pin can be connected to Vbus (through a resistor), and
+   *  can be used to detect when Vbus is high (host actively powering), or low
+   *  (host is shut down or otherwise not supplying power).  The USB firmware
+   *  can then periodically poll this I/O pin to know when it is okay to turn on
+   *  the USB module/D+/D- pull up resistor.  When designing a purely bus powered
+   *  peripheral device, it is not possible to source current on D+ or D- when the
+   *  host is not actively providing power on Vbus. Therefore, implementing this
+   *  bus sense feature is optional. ..."
+   */
+
+#ifdef CONFIG_USBHOST
+ // pic32mx_configgpio(GPIO_USB_VBUSON);
+#endif
+    
+  /* "If the host PC sends a GetStatus (device) request, the firmware must respond
+   *  and let the host know if the USB peripheral device is currently bus powered
+   *  or self powered.  See chapter 9 in the official USB specifications for details
+   *  regarding this request.  If the peripheral device is capable of being both
+   *  self and bus powered, it should not return a hard coded value for this request.
+   *  Instead, firmware should check if it is currently self or bus powered, and
+   *  respond accordingly.  If the hardware has been configured like demonstrated
+   *  on the PICDEM FS USB Demo Board, an I/O pin can be polled to determine the
+   *  currently selected power source. ..."
+   */
+
+#ifdef CONFIG_USB_PWRSENSE
+ // pic32mx_configgpio(GPIO_USB_PWRSENSE);
+#endif
+}
+
+/************************************************************************************
+ * Name: pic32mx_usbpullup
+ *
+ * Description:
+ *   If USB is supported and the board supports a pullup via GPIO (for USB
+ *   software connect and disconnect), then the board software must provide
+ *   stm32_pullup. See include/nuttx/usb/usbdev.h for additional description
+ *   of this method.  Alternatively, if no pull-up GPIO the following EXTERN
+ *   can be redefined to be NULL.
+ *
+ ************************************************************************************/
+
+int pic32mx_usbpullup(FAR struct usbdev_s *dev,  bool enable)
+{
+  /* The PIC32 Ethernet Starter Kit does not have a USB pull-up */
+
+  return OK;
+}
+
+/************************************************************************************
+ * Name: pic32mx_usbsuspend
+ *
+ * Description:
+ *   Board logic must provide the stm32_usbsuspend logic if the USBDEV driver
+ *   is used.  This function is called whenever the USB enters or leaves
+ *   suspend mode. This is an opportunity for the board logic to shutdown
+ *   clocks, power, etc. while the USB is suspended.
+ *
+ ************************************************************************************/
+
+void pic32mx_usbsuspend(FAR struct usbdev_s *dev, bool resume)
+{
+  /* Do nothing */
+}
+
+#endif /* CONFIG_PIC32MX_USBDEV */

nuttx/configs/pic32-starterkit/src/up_usbterm.c

@@ -0,0 +1,105 @@
+/************************************************************************************
+ * configs/pic32-starterkit/src/up_usbterm.c
+ * arch/arm/src/board/up_usbterm.c
+ *
+ *   Copyright (C) 2012 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 <stdbool.h>
+#include <debug.h>
+
+#include <nuttx/usb/usbdev.h>
+
+#include "pic32mx-internal.h"
+#include "starterkit_internal.h"
+
+#if defined(CONFIG_PIC32MX_USBDEV) && defined(CONFIG_EXAMPLES_USBTERM_DEVINIT)
+
+/************************************************************************************
+ * Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Private Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/****************************************************************************
+ * Name:
+ *
+ * Description:
+ *   If CONFIG_EXAMPLES_USBTERM_DEVINIT is defined, then the example will
+ *   call this user provided function as part of its initialization.
+ *
+ ****************************************************************************/
+
+int usbterm_devinit(void)
+{
+  /* The PIO32 Starter Kit has no way to know when the USB is connected.  So
+   * we will fake it and tell the USB driver that the USB is connected now.
+   *
+   * If examples/usbterm is built as an NSH built-in application, then
+   * pic32mx_usbattach() will be called in nsh_archinitialize().
+   */
+
+#ifndef CONFIG_EXAMPLES_USBTERM_BUILTIN
+  pic32mx_usbattach();
+#endif
+  return OK;
+}
+
+/****************************************************************************
+ * Name:
+ *
+ * Description:
+ *   If CONFIG_EXAMPLES_USBTERM_DEVINIT is defined, then the example will
+ *   call this user provided function as part of its termination sequence.
+ *
+ ****************************************************************************/
+
+void usbterm_devuninit(void)
+{
+  /* Tell the USB driver that the USB is no longer connected */
+
+  pic32mx_usbdetach();
+}
+
+#endif /* CONFIG_PIC32MX_USBDEV && CONFIG_EXAMPLES_USBTERM_DEVINIT */

nuttx/configs/sure-pic32mx/README.txt

@@ -471,7 +471,7 @@ Where <subdir> is one of the following:
     as NSH built-in built in functions.  All require the following
     basic setup in your .config to enable USB device support:
  
-      CONFIG_USBEV=y          : Enable basic USB device support
+      CONFIG_USBDEV=y         : Enable basic USB device support
       CONFIG_PIC32MX_USBDEV=y : Enable PIC32 USB device support
 
     examples/usbterm - This option can be enabled by uncommenting