293 lines
9.1 KiB
C
293 lines
9.1 KiB
C
/************************************************************************************
|
|
* configs/stm32f4discovery/src/up_usbdev.c
|
|
* arch/arm/src/board/up_boot.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 <sys/types.h>
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
#include <sched.h>
|
|
#include <errno.h>
|
|
#include <debug.h>
|
|
|
|
#include <nuttx/usb/usbdev.h>
|
|
#include <nuttx/usb/usbhost.h>
|
|
#include <nuttx/usb/usbdev_trace.h>
|
|
|
|
#include "up_arch.h"
|
|
#include "stm32_internal.h"
|
|
#include "stm32f4discovery-internal.h"
|
|
|
|
#ifdef CONFIG_STM32_OTGFS
|
|
|
|
/************************************************************************************
|
|
* Pre-processor Definitions
|
|
************************************************************************************/
|
|
|
|
#if defined(CONFIG_USBDEV) || defined(CONFIG_USBHOST)
|
|
# define HAVE_USB 1
|
|
#else
|
|
# warning "CONFIG_STM32_OTGFS is enabled but neither CONFIG_USBDEV nor CONFIG_USBHOST"
|
|
# undef HAVE_USB
|
|
#endif
|
|
|
|
#ifndef CONFIG_USBHOST_DEFPRIO
|
|
# define CONFIG_USBHOST_DEFPRIO 50
|
|
#endif
|
|
|
|
#ifndef CONFIG_USBHOST_STACKSIZE
|
|
# define CONFIG_USBHOST_STACKSIZE 1024
|
|
#endif
|
|
|
|
/************************************************************************************
|
|
* Private Data
|
|
************************************************************************************/
|
|
|
|
#ifdef CONFIG_USBHOST
|
|
static struct usbhost_driver_s *g_drvr;
|
|
#endif
|
|
|
|
/************************************************************************************
|
|
* Private Functions
|
|
************************************************************************************/
|
|
|
|
/************************************************************************************
|
|
* Name: usbhost_waiter
|
|
*
|
|
* Description:
|
|
* Wait for USB devices to be connected.
|
|
*
|
|
************************************************************************************/
|
|
|
|
#ifdef CONFIG_USBHOST
|
|
static int usbhost_waiter(int argc, char *argv[])
|
|
{
|
|
bool connected = false;
|
|
int ret;
|
|
|
|
uvdbg("Running\n");
|
|
for (;;)
|
|
{
|
|
/* Wait for the device to change state */
|
|
|
|
ret = DRVR_WAIT(g_drvr, connected);
|
|
DEBUGASSERT(ret == OK);
|
|
|
|
connected = !connected;
|
|
uvdbg("%s\n", connected ? "connected" : "disconnected");
|
|
|
|
/* Did we just become connected? */
|
|
|
|
if (connected)
|
|
{
|
|
/* Yes.. enumerate the newly connected device */
|
|
|
|
(void)DRVR_ENUMERATE(g_drvr);
|
|
}
|
|
}
|
|
|
|
/* Keep the compiler from complaining */
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/************************************************************************************
|
|
* Public Functions
|
|
************************************************************************************/
|
|
|
|
/************************************************************************************
|
|
* Name: stm32_usbinitialize
|
|
*
|
|
* Description:
|
|
* Called from stm32_usbinitialize very early in inialization to setup USB-related
|
|
* GPIO pins for the STM32F4Discovery board.
|
|
*
|
|
************************************************************************************/
|
|
|
|
void stm32_usbinitialize(void)
|
|
{
|
|
/* The OTG FS has an internal soft pull-up. No GPIO configuration is required */
|
|
|
|
/* Configure the OTG FS VBUS sensing GPIO, Power On, and Overcurrent GPIOs */
|
|
|
|
#ifdef CONFIG_STM32_OTGFS
|
|
stm32_configgpio(GPIO_OTGFS_VBUS);
|
|
stm32_configgpio(GPIO_OTGFS_PWRON);
|
|
stm32_configgpio(GPIO_OTGFS_OVER);
|
|
#endif
|
|
}
|
|
|
|
/***********************************************************************************
|
|
* Name: stm32_usbhost_initialize
|
|
*
|
|
* Description:
|
|
* Called at application startup time to initialize the USB host functionality.
|
|
* This function will start a thread that will monitor for device
|
|
* connection/disconnection events.
|
|
*
|
|
***********************************************************************************/
|
|
|
|
#ifdef CONFIG_USBHOST
|
|
int stm32_usbhost_initialize(void)
|
|
{
|
|
int pid;
|
|
int ret;
|
|
|
|
/* First, register all of the class drivers needed to support the drivers
|
|
* that we care about:
|
|
*/
|
|
|
|
uvdbg("Register class drivers\n");
|
|
ret = usbhost_storageinit();
|
|
if (ret != OK)
|
|
{
|
|
udbg("Failed to register the mass storage class\n");
|
|
}
|
|
|
|
/* Then get an instance of the USB host interface */
|
|
|
|
uvdbg("Initialize USB host\n");
|
|
g_drvr = usbhost_initialize(0);
|
|
if (g_drvr)
|
|
{
|
|
/* Start a thread to handle device connection. */
|
|
|
|
uvdbg("Start usbhost_waiter\n");
|
|
|
|
pid = TASK_CREATE("usbhost", CONFIG_USBHOST_DEFPRIO,
|
|
CONFIG_USBHOST_STACKSIZE,
|
|
(main_t)usbhost_waiter, (const char **)NULL);
|
|
return pid < 0 ? -ENOEXEC : OK;
|
|
}
|
|
|
|
return -ENODEV;
|
|
}
|
|
#endif
|
|
|
|
/***********************************************************************************
|
|
* Name: stm32_usbhost_vbusdrive
|
|
*
|
|
* Description:
|
|
* Enable/disable driving of VBUS 5V output. This function must be provided be
|
|
* each platform that implements the STM32 OTG FS host interface
|
|
*
|
|
* "On-chip 5 V VBUS generation is not supported. For this reason, a charge pump
|
|
* or, if 5 V are available on the application board, a basic power switch, must
|
|
* be added externally to drive the 5 V VBUS line. The external charge pump can
|
|
* be driven by any GPIO output. When the application decides to power on VBUS
|
|
* using the chosen GPIO, it must also set the port power bit in the host port
|
|
* control and status register (PPWR bit in OTG_FS_HPRT).
|
|
*
|
|
* "The application uses this field to control power to this port, and the core
|
|
* clears this bit on an overcurrent condition."
|
|
*
|
|
* Input Parameters:
|
|
* iface - For future growth to handle multiple USB host interface. Should be zero.
|
|
* enable - true: enable VBUS power; false: disable VBUS power
|
|
*
|
|
* Returned Value:
|
|
* None
|
|
*
|
|
***********************************************************************************/
|
|
|
|
#ifdef CONFIG_USBHOST
|
|
void stm32_usbhost_vbusdrive(int iface, bool enable)
|
|
{
|
|
DEBUGASSERT(iface == 0);
|
|
|
|
if (enable)
|
|
{
|
|
/* Enable the Power Switch by driving the enable pin low */
|
|
|
|
stm32_gpiowrite(GPIO_OTGFS_PWRON, false);
|
|
}
|
|
else
|
|
{
|
|
/* Disable the Power Switch by driving the enable pin high */
|
|
|
|
stm32_gpiowrite(GPIO_OTGFS_PWRON, true);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/************************************************************************************
|
|
* Name: stm32_setup_overcurrent
|
|
*
|
|
* Description:
|
|
* Setup to receive an interrupt-level callback if an overcurrent condition is
|
|
* detected.
|
|
*
|
|
* Input paramter:
|
|
* handler - New overcurrent interrupt handler
|
|
*
|
|
* Returned value:
|
|
* Old overcurrent interrupt handler
|
|
*
|
|
************************************************************************************/
|
|
|
|
#ifdef CONFIG_USBHOST
|
|
xcpt_t stm32_setup_overcurrent(xcpt_t handler)
|
|
{
|
|
return stm32_gpiosetevent(GPIO_OTGFS_OVER, true, true, true, handler);
|
|
}
|
|
#endif
|
|
|
|
/************************************************************************************
|
|
* Name: stm32_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 stm32_usbsuspend(FAR struct usbdev_s *dev, bool resume)
|
|
{
|
|
ulldbg("resume: %d\n", resume);
|
|
}
|
|
|
|
#endif /* CONFIG_STM32_OTGFS */
|
|
|
|
|
|
|