* boards/arm/stm32/cloudctrl/src/stm32_usb.c
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdint.h>
#include <stdbool.h>
#include <sched.h>
#include <errno.h>
#include <assert.h>
#include <debug.h>
#include <nuttx/kthread.h>
#include <nuttx/usb/usbdev.h>
#include <nuttx/usb/usbhost.h>
#include <nuttx/usb/usbdev_trace.h>
#include "arm_internal.h"
#include "stm32.h"
#include "stm32_otgfs.h"
#include "cloudctrl.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
# ifdef CONFIG_USBHOST_HUB
# define CONFIG_USBHOST_STACKSIZE 1536
# else
# define CONFIG_USBHOST_STACKSIZE 1024
# endif
#endif
* Private Data
****************************************************************************/
#ifdef CONFIG_USBHOST
static struct usbhost_connection_s *g_usbconn;
#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[])
{
struct usbhost_hubport_s *hport;
uinfo("Running\n");
for (; ; )
{
DEBUGVERIFY(CONN_WAIT(g_usbconn, &hport));
uinfo("%s\n", hport->connected ? "connected" : "disconnected");
if (hport->connected)
{
CONN_ENUMERATE(g_usbconn, hport);
}
}
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 STM3240G-EVAL board.
*
****************************************************************************/
void stm32_usbinitialize(void)
{
* No GPIO configuration is required
*/
* 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 ret;
* that we care about:
*/
uinfo("Register class drivers\n");
#ifdef CONFIG_USBHOST_MSC
ret = usbhost_msc_initialize();
if (ret != OK)
{
uerr("ERROR: Failed to register the mass storage class\n");
}
#endif
#ifdef CONFIG_USBHOST_CDCACM
ret = usbhost_cdcacm_initialize();
if (ret != OK)
{
uerr("ERROR: Failed to register the CDC/ACM serial class\n");
}
#endif
uinfo("Initialize USB host\n");
g_usbconn = stm32_otgfshost_initialize(0);
if (g_usbconn)
{
uinfo("Start usbhost_waiter\n");
ret = kthread_create("usbhost", CONFIG_USBHOST_DEFPRIO,
CONFIG_USBHOST_STACKSIZE,
usbhost_waiter, NULL);
return ret < 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)
{
stm32_gpiowrite(GPIO_OTGFS_PWRON, false);
}
else
{
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 Parameters:
* handler - New overcurrent interrupt handler
* arg - The argument provided for the interrupt handler
*
* Returned Value:
* Zero (OK) is returned on success. Otherwise, a negated errno value
* is returned to indicate the nature of the failure.
*
****************************************************************************/
#ifdef CONFIG_USBHOST
int stm32_setup_overcurrent(xcpt_t handler, void *arg)
{
return -ENOSYS;
}
#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.
*
****************************************************************************/
#ifdef CONFIG_USBDEV
void stm32_usbsuspend(struct usbdev_s *dev, bool resume)
{
uinfo("resume: %d\n", resume);
}
#endif
#endif