66565a69a7
avr: hc: mips: codestyle fixes
* avr: codestyle fixes
After the board restructuration is time for codestyle cleanup
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
* hc: codestyle fixes
After the board restructuration is time for codestyle cleanup
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
* mips: codestyle fixes
After the board restructuration is time for codestyle cleanup
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
Approved-by: Gregory Nutt <gnutt@nuttx.org>
173 lines
6.9 KiB
C
173 lines
6.9 KiB
C
/****************************************************************************
|
|
* boards/mips/pic32mx/pic32mx7mmb/src/pic32_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.h"
|
|
#include "pic32mx7mmb.h"
|
|
|
|
#if defined(CONFIG_PIC32MX_USBDEV)
|
|
|
|
/****************************************************************************
|
|
* Pre-processor 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 Mikroelektronika PIC32MX7 MMB
|
|
* 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
|
|
* pic32mx_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 Mikroelektronika PIC32MX7 MMB does not have a USB pull-up */
|
|
|
|
return OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: pic32mx_usbsuspend
|
|
*
|
|
* Description:
|
|
* Board logic must provide the pic32mx_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 */
|