Hello
I have built a usb rubber with at32uc3b1256. but it does not work. when I plug it in to my computer, I receive this error :"A request for the USB device descriptor failed". could anyone tell me, what I should do?
thanks.
I've used a 12 MHz crystal. this is the conf_clock file:
/**
* \file
*
* \brief Chip-specific system clock manager configuration
*
* Copyright (c) 2011 Atmel Corporation. All rights reserved.
*
* \asf_license_start
*
* 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. The name of Atmel may not be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 4. This software may only be redistributed and used in connection with an Atmel
* AVR product.
*
* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
*
* \asf_license_stop
*
*/
#ifndef CONF_CLOCK_H_INCLUDED
#define CONF_CLOCK_H_INCLUDED
// ===== System Clock Source Options
//#define CONFIG_SYSCLK_SOURCE SYSCLK_SRC_RCSYS
//#define CONFIG_SYSCLK_SOURCE SYSCLK_SRC_OSC0
#define CONFIG_SYSCLK_SOURCE SYSCLK_SRC_PLL0
// ===== PLL0 Options
#define CONFIG_PLL0_SOURCE PLL_SRC_OSC0
//#define CONFIG_PLL0_SOURCE PLL_SRC_OSC1
#define CONFIG_PLL0_MUL 2 /* Fpll = (Fclk * PLL_mul) / PLL_div */
#define CONFIG_PLL0_DIV 2 /* Fpll = (Fclk * PLL_mul) / PLL_div */
// ===== PLL1 Options
#define CONFIG_PLL1_SOURCE PLL_SRC_OSC0
//#define CONFIG_PLL1_SOURCE PLL_SRC_OSC1
#define CONFIG_PLL1_MUL 8 /* Fpll = (Fclk * PLL_mul) / PLL_div */
#define CONFIG_PLL1_DIV 2 /* Fpll = (Fclk * PLL_mul) / PLL_div */
// ===== System Clock Bus Division Options
//#define CONFIG_SYSCLK_CPU_DIV 1 /* Fcpu = Fsys/(2 ^ CPU_div) */
//#define CONFIG_SYSCLK_PBA_DIV 1 /* Fpba = Fsys/(2 ^ PBA_div) */
//#define CONFIG_SYSCLK_PBB_DIV 1 /* Fpbb = Fsys/(2 ^ PBB_div) */
// ===== Peripheral Clock Management Options
//#define CONFIG_SYSCLK_INIT_CPUMASK ((1 << SYSCLK_SYSTIMER) | (1 << SYSCLK_OCD))
//#define CONFIG_SYSCLK_INIT_PBAMASK (1 << SYSCLK_USART0)
//#define CONFIG_SYSCLK_INIT_PBBMASK (1 << SYSCLK_HMATRIX)
//#define CONFIG_SYSCLK_INIT_HSBMASK (1 << SYSCLK_MDMA_HSB)
// ===== USB Clock Source Options
//#define CONFIG_USBCLK_SOURCE USBCLK_SRC_OSC0
//#define CONFIG_USBCLK_SOURCE USBCLK_SRC_PLL0
#define CONFIG_USBCLK_SOURCE USBCLK_SRC_PLL1
#define CONFIG_USBCLK_DIV 1 /* Fusb = Fsys/(2 ^ USB_div) */
#endif /* CONF_CLOCK_H_INCLUDED */
and this is the conf_usb.h file:
/**
* \file
*
* \brief USB configuration file
*
* Copyright (c) 2009 Atmel Corporation. All rights reserved.
*
* \asf_license_start
*
* 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. The name of Atmel may not be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 4. This software may only be redistributed and used in connection with an Atmel
* AVR product.
*
* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
*
* \asf_license_stop
*
*/
#ifndef _CONF_USB_H_
#define _CONF_USB_H_
#include "compiler.h"
/**
* USB Device Configuration
* @{
*/
//! Device definition (mandatory)
#define USB_DEVICE_VENDOR_ID USB_VID_ATMEL
#define USB_DEVICE_PRODUCT_ID USB_PID_ATMEL_AVR_HIDKEYBOARD
#define USB_DEVICE_MAJOR_VERSION 1
#define USB_DEVICE_MINOR_VERSION 0
#define USB_DEVICE_POWER 100 // Consumption on Vbus line (mA)
#define USB_DEVICE_ATTR \
(USB_CONFIG_ATTR_REMOTE_WAKEUP|USB_CONFIG_ATTR_SELF_POWERED)
// (USB_CONFIG_ATTR_REMOTE_WAKEUP|USB_CONFIG_ATTR_BUS_POWERED)
// (USB_CONFIG_ATTR_SELF_POWERED)
// (USB_CONFIG_ATTR_BUS_POWERED)
//! USB Device string definitions (Optional)
#define USB_DEVICE_MANUFACTURE_NAME "ALVAND"
#define USB_DEVICE_PRODUCT_NAME "HAMEDAN"
// #define USB_DEVICE_SERIAL_NAME "12...EF"
/**
* Device speeds support
* @{
*/
//! To define a Low speed device
//#define USB_DEVICE_LOW_SPEED
//! To authorize the High speed
#if (UC3A3||UC3A4)
//#define USB_DEVICE_HS_SUPPORT
#endif
//@}
/**
* USB Device Callbacks definitions (Optional)
* @{
*/
#define UDC_VBUS_EVENT(b_vbus_high) main_vbus_action(b_vbus_high)
#define UDC_SOF_EVENT() main_sof_action()
#define UDC_SUSPEND_EVENT() main_suspend_action()
#define UDC_RESUME_EVENT() main_resume_action()
//! Mandatory when USB_DEVICE_ATTR authorizes remote wakeup feature
#define UDC_REMOTEWAKEUP_ENABLE() main_remotewakeup_enable()
#define UDC_REMOTEWAKEUP_DISABLE() main_remotewakeup_disable()
//! When a extra string descriptor must be supported
//! other than manufacturer, product and serial string
// #define UDC_GET_EXTRA_STRING()
//@}
//@}
/**
* USB Interface Configuration
* @{
*/
/**
* Configuration of HID Keyboard interface
* @{
*/
//! Interface callback definition
#define UDI_HID_KBD_ENABLE_EXT() main_kbd_enable()
#define UDI_HID_KBD_DISABLE_EXT() main_kbd_disable()
#define UDI_HID_KBD_CHANGE_LED(value) ui_kbd_led(value)
//@}
//@}
/**
* USB Device Driver Configuration
* @{
*/
//@}
//! The includes of classes and other headers must be done at the end of this file to avoid compile error
#include "udi_hid_kbd_conf.h"
#include "main.h"
#include "ui.h"
#endif // _CONF_USB_H_
and this is my main.c file:
/**
* \file
*
* \brief Main functions for Keyboard example
*
* Copyright (c) 2009-2011 Atmel Corporation. All rights reserved.
*
* \asf_license_start
*
* 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. The name of Atmel may not be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 4. This software may only be redistributed and used in connection with an Atmel
* AVR product.
*
* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
*
* \asf_license_stop
*
*/
#include "compiler.h"
#include "preprocessor.h"
#include "board.h"
#include "gpio.h"
#include "sysclk.h"
#include "sleepmgr.h"
#include "conf_usb.h"
#include "udc.h"
#include "udd.h"
#include "ui.h"
//volatile static bool main_b_kbd_enable = false;
volatile static bool main_b_kbd_enable = true;
/*! \brief Main function. Execution starts here.
*/
int main(void)
{
irq_initialize_vectors();
cpu_irq_enable();
// Initialize the sleep manager
sleepmgr_init();
sysclk_init();
board_init();
ui_init();
ui_powerdown();
ui_wakeup_enable();
volatile uint32_t freq = sysclk_get_cpu_hz();
freq ++;
LED_Toggle(LED3);
// Start USB stack to authorize VBus monitoring
udc_start();
//udc_attach();
if (!udc_include_vbus_monitoring()) {
// VBUS monitoring is not available on this product
// thereby VBUS has to be considered as present
main_vbus_action(true);
}
// The main loop manages only the power mode
// because the USB management is done by interrupt
while (true) {
#ifdef USB_DEVICE_LOW_SPEED
// No USB "Keep a live" interrupt available in low speed
// to scan keyboard interface then use main loop
if (main_b_kbd_enable) {
static uint16_t virtual_sof_sub = 0;
if (700 == virtual_sof_sub++) {
virtual_sof_sub = 0;
static uint16_t virtual_sof = 0;
ui_process(virtual_sof++);
}
}
#else
sleepmgr_enter_sleep();
#endif
}
}
void main_vbus_action(bool b_high)
{
//if (b_high) {
// Attach USB Device
udc_attach();
//} else {
// VBUS not present
//udc_detach();
//}
}
void main_suspend_action(void)
{
ui_powerdown();
}
void main_resume_action(void)
{
ui_wakeup();
}
void main_sof_action(void)
{
if (!main_b_kbd_enable)
return;
ui_process(udd_get_frame_number());
}
void main_remotewakeup_enable(void)
{
ui_wakeup_enable();
}
void main_remotewakeup_disable(void)
{
ui_wakeup_disable();
}
bool main_kbd_enable(void)
{
main_b_kbd_enable = true;
return true;
}
void main_kbd_disable(void)
{
main_b_kbd_enable = false;
}
/**
* \mainpage ASF USB Device HID Keyboard
*
* \section intro Introduction
* This example shows how to implement a USB Device HID Keyboard
* on Atmel MCU with USB module.
* The application note AVR4903 provides information about this implementation.
*
* \section startup Startup
* The example uses the buttons or sensors available on the board
* to simulate a standard keyboard.
* After loading firmware, connect the board (EVKxx,XPlain,...) to the USB Host.
* When connected to a USB host system this application provides a keyboard application
* in the Unix/Mac/Windows operating systems.
* This example uses the native HID driver for these operating systems.
*
* \copydoc UI
*
* \section example About example
*
* The example uses the following module groups:
* - Basic modules:
* Startup, board, clock, interrupt, power management
* - USB Device stack and HID modules:
* <br>services/usb/
* <br>services/usb/udc/
* <br>services/usb/class/hid/
* <br>services/usb/class/hid/keyboard/
* - Specific implementation:
* - main.c,
* <br>initializes clock
* <br>initializes interrupt
* <br>manages UI
* - specific implementation for each target "./examples/product_board/":
* - conf_foo.h configuration of each module
* - ui.c implement of user's interface (buttons, leds)
*/