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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-04-26 20:11:46 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-04-26 20:11:46 +0000 |
commit | 33fa9bda9ce205d3524cef9c794cddc1aabc8c54 (patch) | |
tree | a8c5f6d3d1d3666cc9be47d7941cff8ce9178a68 /nuttx/configs/ubw32/src/up_usbdev.c | |
parent | 9b80f0e22e3304c3389df7175628f2890f8ee827 (diff) | |
download | px4-nuttx-33fa9bda9ce205d3524cef9c794cddc1aabc8c54.tar.gz px4-nuttx-33fa9bda9ce205d3524cef9c794cddc1aabc8c54.tar.bz2 px4-nuttx-33fa9bda9ce205d3524cef9c794cddc1aabc8c54.zip |
Configuration for Sparkfun UBW32 board
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4660 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/configs/ubw32/src/up_usbdev.c')
-rw-r--r-- | nuttx/configs/ubw32/src/up_usbdev.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/nuttx/configs/ubw32/src/up_usbdev.c b/nuttx/configs/ubw32/src/up_usbdev.c new file mode 100644 index 000000000..9a2f21237 --- /dev/null +++ b/nuttx/configs/ubw32/src/up_usbdev.c @@ -0,0 +1,152 @@ +/************************************************************************************ + * configs/ubw32/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 "ubw32-internal.h" + +#if defined(CONFIG_PIC32MX_USBDEV) + +/************************************************************************************ + * Definitions + ************************************************************************************/ + +/************************************************************************************ + * Private Functions + ************************************************************************************/ + +/************************************************************************************ + * Public Functions + ************************************************************************************/ + +/************************************************************************************ + * Name: pic32mx_usbdevinitialize + * + * Description: + * Called to configure the mini-A/B J5 on the UBW32 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 +#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 +#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 UBW32 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 */ |