void udd_enable(void)
{
uint8_t i;
irqflags_t flags;
// Sanity check Silicon revision
#if AVR8_PART_IS_DEFINED(ATxmega128A1U)
// The part ATxmega128A1U Rev. J is not supported, please use new silicon revision.
Assert(!(MCU_REVID < 0x0A));
#endif
#ifdef CONFIG_OSC_AUTOCAL_RC32MHZ_REF_OSC
# if CONFIG_OSC_AUTOCAL_RC32MHZ_REF_OSC == OSC_ID_USBSOF
// RC oscillator calibration via USB Start Of Frame is not available
// in low speed mode.
// Thus, the calibration is disabled
// when USB interface start in low speed mode
DFLLRC32M.CTRL = 0;
# endif
#endif
#ifdef USB_DEVICE_LOW_SPEED
// The USB hardware need of 6MHz in low speed mode
sysclk_enable_usb(6);
udd_set_low_speed();
#else
// The USB hardware need of 48MHz in full speed mode
sysclk_enable_usb(48);
udd_set_full_speed();
#endif
// The XMEGA_A1U does not support the RC calibration through Keepalive (Low speed).
#if (!defined USB_DEVICE_LOW_SPEED) || (!XMEGA_A1U)
# ifdef CONFIG_OSC_AUTOCAL_RC32MHZ_REF_OSC
# if CONFIG_OSC_AUTOCAL_RC32MHZ_REF_OSC == OSC_ID_USBSOF
// The SOF calibration can be enabled
DFLLRC32M.CTRL = DFLL_ENABLE_bm;
# endif
# endif
#endif
flags = cpu_irq_save();
// Reset endpoints table
for (i = 0; i < ((USB_DEVICE_MAX_EP + 1) * 2); i++) {
udd_sram.ep_ctrl[i].CTRL = 0;
}
#if (0!=USB_DEVICE_MAX_EP)
// Reset internal variables
for (i = 0; i < (USB_DEVICE_MAX_EP * 2); i++) {
udd_ep_job[i].busy = false;
}
#endif
//** Enable USB hardware
usb_pad_init();
udd_set_nb_max_ep(USB_DEVICE_MAX_EP);
udd_enable_interface();
udd_enable_store_frame_number();
#if XMEGA_A1U
Assert(((uint16_t)(&udd_sram) & 0x0F) == 0); /* check align on 16bit */
#else
Assert(((uint16_t)(&udd_sram) & 0x01) == 0); /* check align on WORD */
#endif
udd_set_ep_table_addr(udd_sram.ep_ctrl);
// Enable TC fifo management
udd_enable_fifo();
udd_reset_fifo();
// Enable Interrupt USB Device
udd_enable_interrupt(UDD_USB_INT_LEVEL);
#ifndef UDD_NO_SLEEP_MGR
// Initialize the sleep mode authorized for the USB suspend mode
udd_b_idle = false;
sleepmgr_lock_mode(USBC_SLEEP_MODE_USB_SUSPEND);
#endif
#ifndef USB_DEVICE_ATTACH_AUTO_DISABLE
udd_attach();
#endif
cpu_irq_restore(flags);
}
void udd_enable(void)
{
uint8_t i;
irqflags_t flags;
// Sanity check Silicon revision
#if AVR8_PART_IS_DEFINED(ATxmega128A1U)
// The part ATxmega128A1U Rev. J is not supported, please use new silicon revision.
Assert(!(MCU_REVID < 0x0A));
#endif
uint8_t dfll_save = DFLLRC32M.CTRL;
DFLLRC32M.CTRL = 0;
#ifdef USB_DEVICE_LOW_SPEED
// The USB hardware need of 6MHz in low speed mode
//sysclk_enable_usb(6);
udd_set_low_speed();
#else
// The USB hardware need of 48MHz in full speed mode
//sysclk_enable_usb(48);
udd_set_full_speed();
#endif
DFLLRC32M.CTRL = dfll_save;
flags = cpu_irq_save();
// Reset endpoints table
for (i = 0; i < ((USB_DEVICE_MAX_EP + 1) * 2); i++) {
udd_sram.ep_ctrl[i].CTRL = 0;
}
#if (0!=USB_DEVICE_MAX_EP)
// Reset internal variables
for (i = 0; i < (USB_DEVICE_MAX_EP * 2); i++) {
udd_ep_job[i].busy = false;
}
#endif
//** Enable USB hardware
usb_pad_init();
udd_set_nb_max_ep(USB_DEVICE_MAX_EP);
udd_enable_interface();
udd_enable_store_frame_number();
#if XMEGA_A1U
Assert(((uint16_t)(&udd_sram) & 0x0F) == 0); /* check align on 16bit */
#else
Assert(((uint16_t)(&udd_sram) & 0x01) == 0); /* check align on WORD */
#endif
udd_set_ep_table_addr(udd_sram.ep_ctrl);
// Enable TC fifo management
udd_enable_fifo();
udd_reset_fifo();
// Enable Interrupt USB Device
udd_enable_interrupt(UDD_USB_INT_LEVEL);
#ifndef UDD_NO_SLEEP_MGR
// Initialize the sleep mode authorized for the USB suspend mode
udd_b_idle = false;
sleepmgr_lock_mode(USBC_SLEEP_MODE_USB_SUSPEND);
#endif
#ifndef USB_DEVICE_ATTACH_AUTO_DISABLE
udd_attach();
#endif
cpu_irq_restore(flags);
}
