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git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@5066 7fd9a85b-ad96-42d3-883c-3090e2eb8679sbg
patacongo
13 years ago
15 changed files with 601 additions and 85 deletions
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/************************************************************************************
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* configs/stm32f4discovery/src/up_usbdev.c |
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* arch/arm/src/board/up_boot.c |
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* |
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* Copyright (C) 2012 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <gnutt@nuttx.org> |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. Neither the name NuttX nor the names of its contributors may be |
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* used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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************************************************************************************/ |
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/************************************************************************************
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* Included Files |
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************************************************************************************/ |
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#include <nuttx/config.h> |
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#include <sys/types.h> |
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#include <stdint.h> |
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#include <stdbool.h> |
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#include <sched.h> |
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#include <errno.h> |
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#include <debug.h> |
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#include <nuttx/usb/usbdev.h> |
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#include <nuttx/usb/usbhost.h> |
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#include <nuttx/usb/usbdev_trace.h> |
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#include "up_arch.h" |
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#include "stm32_internal.h" |
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#include "stm32f4discovery-internal.h" |
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#ifdef CONFIG_STM32_OTGFS |
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/************************************************************************************
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* Pre-processor Definitions |
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************************************************************************************/ |
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#if defined(CONFIG_USBDEV) || defined(CONFIG_USBHOST) |
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# define HAVE_USB 1 |
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#else |
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# warning "CONFIG_STM32_OTGFS is enabled but neither CONFIG_USBDEV nor CONFIG_USBHOST" |
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# undef HAVE_USB |
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#endif |
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#ifndef CONFIG_USBHOST_DEFPRIO |
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# define CONFIG_USBHOST_DEFPRIO 50 |
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#endif |
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#ifndef CONFIG_USBHOST_STACKSIZE |
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# define CONFIG_USBHOST_STACKSIZE 1024 |
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#endif |
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/************************************************************************************
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* Private Data |
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************************************************************************************/ |
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#ifdef CONFIG_USBHOST |
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static struct usbhost_driver_s *g_drvr; |
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#endif |
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/************************************************************************************
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* Private Functions |
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************************************************************************************/ |
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/************************************************************************************
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* Name: usbhost_waiter |
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* |
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* Description: |
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* Wait for USB devices to be connected. |
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* |
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************************************************************************************/ |
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#ifdef CONFIG_USBHOST |
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static int usbhost_waiter(int argc, char *argv[]) |
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{ |
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bool connected = false; |
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int ret; |
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uvdbg("Running\n"); |
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for (;;) |
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{ |
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/* Wait for the device to change state */ |
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ret = DRVR_WAIT(g_drvr, connected); |
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DEBUGASSERT(ret == OK); |
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connected = !connected; |
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uvdbg("%s\n", connected ? "connected" : "disconnected"); |
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/* Did we just become connected? */ |
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if (connected) |
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{ |
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/* Yes.. enumerate the newly connected device */ |
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(void)DRVR_ENUMERATE(g_drvr); |
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} |
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} |
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/* Keep the compiler from complaining */ |
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return 0; |
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} |
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#endif |
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/************************************************************************************
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* Public Functions |
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************************************************************************************/ |
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/************************************************************************************
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* Name: stm32_usbinitialize |
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* |
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* Description: |
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* Called from stm32_usbinitialize very early in inialization to setup USB-related |
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* GPIO pins for the STM32F4Discovery board. |
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* |
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************************************************************************************/ |
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void stm32_usbinitialize(void) |
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{ |
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/* The OTG FS has an internal soft pull-up. No GPIO configuration is required */ |
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/* Configure the OTG FS VBUS sensing GPIO, Power On, and Overcurrent GPIOs */ |
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#ifdef CONFIG_STM32_OTGFS |
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stm32_configgpio(GPIO_OTGFS_VBUS); |
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stm32_configgpio(GPIO_OTGFS_PWRON); |
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stm32_configgpio(GPIO_OTGFS_OVER); |
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#endif |
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} |
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/***********************************************************************************
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* Name: stm32_usbhost_initialize |
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* |
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* Description: |
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* Called at application startup time to initialize the USB host functionality. |
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* This function will start a thread that will monitor for device |
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* connection/disconnection events. |
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* |
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***********************************************************************************/ |
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#ifdef CONFIG_USBHOST |
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int stm32_usbhost_initialize(void) |
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{ |
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int pid; |
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int ret; |
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/* First, register all of the class drivers needed to support the drivers
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* that we care about: |
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*/ |
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uvdbg("Register class drivers\n"); |
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ret = usbhost_storageinit(); |
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if (ret != OK) |
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{ |
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udbg("Failed to register the mass storage class\n"); |
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} |
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/* Then get an instance of the USB host interface */ |
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uvdbg("Initialize USB host\n"); |
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g_drvr = usbhost_initialize(0); |
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if (g_drvr) |
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{ |
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/* Start a thread to handle device connection. */ |
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uvdbg("Start usbhost_waiter\n"); |
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pid = TASK_CREATE("usbhost", CONFIG_USBHOST_DEFPRIO, |
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CONFIG_USBHOST_STACKSIZE, |
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(main_t)usbhost_waiter, (const char **)NULL); |
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return pid < 0 ? -ENOEXEC : OK; |
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} |
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return -ENODEV; |
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} |
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#endif |
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/***********************************************************************************
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* Name: stm32_usbhost_vbusdrive |
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* |
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* Description: |
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* Enable/disable driving of VBUS 5V output. This function must be provided be |
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* each platform that implements the STM32 OTG FS host interface |
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* |
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* "On-chip 5 V VBUS generation is not supported. For this reason, a charge pump |
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* or, if 5 V are available on the application board, a basic power switch, must
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* be added externally to drive the 5 V VBUS line. The external charge pump can
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* be driven by any GPIO output. When the application decides to power on VBUS
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* using the chosen GPIO, it must also set the port power bit in the host port
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* control and status register (PPWR bit in OTG_FS_HPRT). |
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* |
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* "The application uses this field to control power to this port, and the core |
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* clears this bit on an overcurrent condition." |
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* |
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* Input Parameters: |
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* iface - For future growth to handle multiple USB host interface. Should be zero. |
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* enable - true: enable VBUS power; false: disable VBUS power |
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* |
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* Returned Value: |
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* None |
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* |
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***********************************************************************************/ |
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#ifdef CONFIG_USBHOST |
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void stm32_usbhost_vbusdrive(int iface, bool enable) |
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{ |
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DEBUGASSERT(iface == 0); |
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if (enable) |
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{ |
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/* Enable the Power Switch by driving the enable pin low */ |
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stm32_gpiowrite(GPIO_OTGFS_PWRON, false); |
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} |
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else |
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{
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/* Disable the Power Switch by driving the enable pin high */ |
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stm32_gpiowrite(GPIO_OTGFS_PWRON, true); |
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} |
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} |
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#endif |
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/************************************************************************************
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* Name: stm32_setup_overcurrent |
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* |
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* Description: |
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* Setup to receive an interrupt-level callback if an overcurrent condition is |
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* detected. |
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* |
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* Input paramter: |
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* handler - New overcurrent interrupt handler |
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* |
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* Returned value: |
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* Old overcurrent interrupt handler |
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* |
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************************************************************************************/ |
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#ifdef CONFIG_USBHOST |
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xcpt_t stm32_setup_overcurrent(xcpt_t handler) |
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{ |
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return stm32_gpiosetevent(GPIO_OTGFS_OVER, true, true, true, handler); |
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} |
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#endif |
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/************************************************************************************
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* Name: stm32_usbsuspend |
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* |
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* Description: |
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* Board logic must provide the stm32_usbsuspend logic if the USBDEV driver is |
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* used. This function is called whenever the USB enters or leaves suspend mode. |
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* This is an opportunity for the board logic to shutdown clocks, power, etc. |
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* while the USB is suspended. |
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* |
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************************************************************************************/ |
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void stm32_usbsuspend(FAR struct usbdev_s *dev, bool resume) |
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{ |
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ulldbg("resume: %d\n", resume); |
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} |
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#endif /* CONFIG_STM32_OTGFS */ |
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