C++ (Cpp) usb_lld_reset Examples

Example #1

File: usb.c Project: 1847123212/ebike-controller

/**
 * @brief   USB reset routine.
 * @details This function must be invoked when an USB bus reset condition is
 *          detected.
 *
 * @param[in] usbp      pointer to the @p USBDriver object
 *
 * @notapi
 */
void _usb_reset(USBDriver *usbp) {
  unsigned i;

  /* State transition.*/
  usbp->state         = USB_READY;

  /* Resetting internal state.*/
  usbp->status        = 0;
  usbp->address       = 0;
  usbp->configuration = 0;
  usbp->transmitting  = 0;
  usbp->receiving     = 0;

  /* Invalidates all endpoints into the USBDriver structure.*/
  for (i = 0; i <= (unsigned)USB_MAX_ENDPOINTS; i++) {
    usbp->epc[i] = NULL;
  }

  /* EP0 state machine initialization.*/
  usbp->ep0state = USB_EP0_WAITING_SETUP;

  /* Low level reset.*/
  usb_lld_reset(usbp);

  /* Notification of reset event.*/
  _usb_isr_invoke_event_cb(usbp, USB_EVENT_RESET);
}

Example #2

File: usb.c Project: hmchen1/ChibiOS

/**
 * @brief   USB reset routine.
 * @details This function must be invoked when an USB bus reset condition is
 *          detected.
 *
 * @param[in] usbp      pointer to the @p USBDriver object
 *
 * @notapi
 */
void _usb_reset(USBDriver *usbp) {
  unsigned i;

  usbp->state         = USB_READY;
  usbp->status        = 0;
  usbp->address       = 0;
  usbp->configuration = 0;
  usbp->transmitting  = 0;
  usbp->receiving     = 0;

  /* Invalidates all endpoints into the USBDriver structure.*/
  for (i = 0; i <= USB_MAX_ENDPOINTS; i++)
    usbp->epc[i] = NULL;

  /* EP0 state machine initialization.*/
  usbp->ep0state = USB_EP0_WAITING_SETUP;

  /* Low level reset.*/
  usb_lld_reset(usbp);
}

Example #3

File: hal_usb.c Project: Open-Canalyzer/ChibiOS

/**
 * @brief   USB reset routine.
 * @details This function must be invoked when an USB bus reset condition is
 *          detected.
 *
 * @param[in] usbp      pointer to the @p USBDriver object
 *
 * @notapi
 */
void _usb_reset(USBDriver *usbp) {
  unsigned i;

  /* State transition.*/
  usbp->state         = USB_READY;

  /* Resetting internal state.*/
  usbp->status        = 0;
  usbp->address       = 0;
  usbp->configuration = 0;
  usbp->transmitting  = 0;
  usbp->receiving     = 0;

  /* Invalidates all endpoints into the USBDriver structure.*/
  for (i = 0; i <= (unsigned)USB_MAX_ENDPOINTS; i++) {
#if USB_USE_WAIT == TRUE
    /* Signaling the event to threads waiting on endpoints.*/
    if (usbp->epc[i] != NULL) {
      osalSysLockFromISR();
      if (usbp->epc[i]->in_state != NULL) {
        osalThreadResumeI(&usbp->epc[i]->in_state->thread, MSG_RESET);
      }
      if (usbp->epc[i]->out_state != NULL) {
        osalThreadResumeI(&usbp->epc[i]->out_state->thread, MSG_RESET);
      }
      osalSysUnlockFromISR();
    }
#endif
    usbp->epc[i] = NULL;
  }

  /* EP0 state machine initialization.*/
  usbp->ep0state = USB_EP0_WAITING_SETUP;

  /* Low level reset.*/
  usb_lld_reset(usbp);

  /* Notification of reset event.*/
  _usb_isr_invoke_event_cb(usbp, USB_EVENT_RESET);
}

Example #4

File: hal_usb_lld.c Project: mabl/ChibiOS

/**
 * @brief   Configures and activates the USB peripheral.
 *
 * @param[in] usbp      pointer to the @p USBDriver object
 *
 * @notapi
 */
void usb_lld_start(USBDriver *usbp) {

  if (usbp->state == USB_STOP) {
    /* Clock activation.*/
#if STM32_USB_USE_USB1
    if (&USBD1 == usbp) {
      /* USB clock enabled.*/
      rccEnableUSB(true);
      /* Powers up the transceiver while holding the USB in reset state.*/
      STM32_USB->CNTR = CNTR_FRES;
      /* Enabling the USB IRQ vectors, this also gives enough time to allow
         the transceiver power up (1uS).*/
#if STM32_USB1_HP_NUMBER != STM32_USB1_LP_NUMBER
      nvicEnableVector(STM32_USB1_HP_NUMBER, STM32_USB_USB1_HP_IRQ_PRIORITY);
#endif
      nvicEnableVector(STM32_USB1_LP_NUMBER, STM32_USB_USB1_LP_IRQ_PRIORITY);
      /* Releases the USB reset.*/
      STM32_USB->CNTR = 0;
    }
#endif
    /* Reset procedure enforced on driver start.*/
    usb_lld_reset(usbp);
  }
}