577 lines
18 KiB
C
577 lines
18 KiB
C
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/*!
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\file usbh_int.c
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\brief USB host mode interrupt handler file
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*/
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/*
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Copyright (C) 2017 GigaDevice
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2017-02-10, V1.0.0, firmware for GD32F30x
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*/
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#include "usb_core.h"
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#include "usb_defines.h"
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#include "usbh_int.h"
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static uint32_t usbh_intf_sof (usb_core_handle_struct *pudev);
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static uint32_t usbh_intf_port (usb_core_handle_struct *pudev);
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static uint32_t usbh_intf_hc (usb_core_handle_struct *pudev);
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static uint32_t usbh_intf_hc_in (usb_core_handle_struct *pudev, uint8_t channel_num);
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static uint32_t usbh_intf_hc_out (usb_core_handle_struct *pudev, uint8_t channel_num);
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static uint32_t usbh_intf_rxfifo_noempty (usb_core_handle_struct *pudev);
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static uint32_t usbh_intf_nptxfifo_empty (usb_core_handle_struct *pudev);
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static uint32_t usbh_intf_ptxfifo_empty (usb_core_handle_struct *pudev);
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static uint32_t usbh_intf_disconnect (usb_core_handle_struct *pudev);
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static uint32_t usbh_intf_iso_incomplete_xfer (usb_core_handle_struct *pudev);
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/*!
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\brief handle global host interrupt
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\param[in] pudev: pointer to usb device instance
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\param[out] none
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\retval operation status
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*/
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uint32_t usbh_isr (usb_core_handle_struct *pudev)
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{
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uint32_t retval = 0U;
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uint32_t int_flag = 0U;
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/* check if host mode */
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if (USB_CURRENT_MODE_GET() == HOST_MODE) {
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USB_CORE_INTR_READ(int_flag);
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if (!int_flag) {
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return 0U;
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}
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/* start of frame interrupt handle */
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if (int_flag & GINTF_SOF) {
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retval |= usbh_intf_sof (pudev);
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}
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/* Rx FIFO non-empty interrupt handle */
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if (int_flag & GINTF_RXFNEIF) {
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retval |= usbh_intf_rxfifo_noempty (pudev);
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}
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/* Non-Periodic Tx FIFO empty interrupt hanlde */
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if (int_flag & GINTF_NPTXFEIF) {
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retval |= usbh_intf_nptxfifo_empty (pudev);
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}
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/* periodic Tx FIFO empty interrupt handle */
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if (int_flag & GINTF_PTXFEIF) {
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retval |= usbh_intf_ptxfifo_empty (pudev);
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}
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/* host channels interrupt handle */
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if (int_flag & GINTF_HCIF) {
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retval |= usbh_intf_hc (pudev);
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}
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/* host port interrupt handle */
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if (int_flag & GINTF_HPIF) {
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retval |= usbh_intf_port (pudev);
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}
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/* disconnect interrupt handle */
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if (int_flag & GINTF_DISCIF) {
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retval |= usbh_intf_disconnect (pudev);
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}
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/* isochronous IN transfer not complete interrupt handle */
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if (int_flag & GINTF_ISOONCIF) {
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retval |= usbh_intf_iso_incomplete_xfer (pudev);
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}
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}
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return retval;
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}
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/*!
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\brief handle the start-of-frame interrupt in host mode
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\param[in] pudev: pointer to usb device instance
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\param[out] none
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\retval operation status
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*/
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static uint32_t usbh_intf_sof (usb_core_handle_struct *pudev)
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{
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usbh_hcd_int_fops->sof(pudev);
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/* clear interrupt */
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USB_GINTF = GINTF_SOF;
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return 1U;
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}
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/*!
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\brief handle all host channels interrupt in host mode
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\param[in] pudev: pointer to usb device instance
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\param[out] none
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\retval operation status
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*/
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static uint32_t usbh_intf_hc (usb_core_handle_struct *pudev)
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{
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uint8_t i = 0U;
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uint32_t retval = 0U;
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for (i = 0U; i < pudev->cfg.host_channel_num; i++) {
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if ((USB_HACHINT & HACHINT_HACHINT) & ((uint32_t)1U << i)) {
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if ((USB_HCHxCTL((uint16_t)i) & HCHCTL_EPDIR) >> 15U) {
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retval |= usbh_intf_hc_in (pudev, i);
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} else {
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retval |= usbh_intf_hc_out (pudev, i);
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}
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}
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}
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return retval;
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}
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/*!
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\brief handle the disconnect interrupt
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\param[in] pudev: pointer to usb device instance
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\param[out] none
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\retval operation status
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*/
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static uint32_t usbh_intf_disconnect (usb_core_handle_struct *pudev)
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{
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usbh_hcd_int_fops->device_disconnected(pudev);
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/* clear interrupt */
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USB_GINTF = GINTF_DISCIF;
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return 1U;
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}
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/*!
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\brief handle the non-periodic tx fifo empty interrupt
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\param[in] pudev: pointer to usb device instance
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\param[out] none
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\retval operation status
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*/
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static uint32_t usbh_intf_nptxfifo_empty (usb_core_handle_struct *pudev)
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{
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uint8_t channel_num = 0U;
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uint32_t dword_len = 0U, len = 0U;
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usb_hostchannel_struct *puhc;
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channel_num = (uint8_t)((USB_HNPTFQSTAT & HNPTFQSTAT_CNUM) >> 27U);
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puhc = &pudev->host.host_channel[channel_num];
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dword_len = (puhc->xfer_len + 3U) / 4U;
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while (((USB_HNPTFQSTAT & HNPTFQSTAT_NPTXFS) > dword_len) && (0U != puhc->xfer_len)) {
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len = (USB_HNPTFQSTAT & HNPTFQSTAT_NPTXFS) * 4U;
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if (len > puhc->xfer_len) {
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/* last packet */
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len = (uint16_t)puhc->xfer_len;
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USB_GINTEN &= ~GINTF_NPTXFEIF;
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}
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dword_len = (puhc->xfer_len + 3U) / 4U;
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usb_fifo_write (puhc->xfer_buff, channel_num, (uint16_t)len);
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puhc->xfer_buff += len;
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puhc->xfer_len -= len;
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puhc->xfer_count += len;
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}
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return 1U;
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}
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/*!
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\brief handle the periodic tx fifo empty interrupt
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\param[in] pudev: pointer to usb device instance
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\param[out] none
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\retval operation status
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*/
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static uint32_t usbh_intf_ptxfifo_empty (usb_core_handle_struct *pudev)
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{
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uint8_t channel_num = 0U;
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uint32_t dword_len = 0U, len = 0U;
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usb_hostchannel_struct *puhc;
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channel_num = (uint8_t)((USB_HPTFQSTAT & HPTFQSTAT_CNUM) >> 27U);
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puhc = &pudev->host.host_channel[channel_num];
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dword_len = (puhc->xfer_len + 3U) / 4U;
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while (((USB_HPTFQSTAT & HPTFQSTAT_PTXFS) > dword_len) && (0U != puhc->xfer_len)) {
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len = (USB_HPTFQSTAT & HPTFQSTAT_PTXFS) * 4U;
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if (len > puhc->xfer_len) {
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len = puhc->xfer_len;
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/* last packet */
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USB_GINTEN &= ~GINTF_PTXFEIF;
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}
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dword_len = (puhc->xfer_len + 3U) / 4U;
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usb_fifo_write (puhc->xfer_buff, channel_num, (uint16_t)len);
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puhc->xfer_buff += len;
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puhc->xfer_len -= len;
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puhc->xfer_count += len;
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}
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return 1U;
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}
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/*!
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\brief handle the host port interrupt
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\param[in] pudev: pointer to usb device instance
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\param[out] none
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\retval operation status
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*/
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static uint32_t usbh_intf_port (usb_core_handle_struct *pudev)
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{
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uint8_t port_speed = 0U;
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uint8_t port_reset = 0U;
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uint32_t retval = 0U;
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__IO uint32_t hostportdup = USB_HPCS;
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/* clear the interrupt bits in gintsts */
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hostportdup &= ~HPCS_PE;
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hostportdup &= ~HPCS_PCD;
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hostportdup &= ~HPCS_PEDC;
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/* port connect detected */
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if (USB_HPCS & HPCS_PCD) {
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hostportdup |= HPCS_PCD;
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usbh_hcd_int_fops->device_connected(pudev);
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retval |= 1U;
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}
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/* port enable changed */
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if (USB_HPCS & HPCS_PEDC) {
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hostportdup |= HPCS_PEDC;
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if (USB_HPCS & HPCS_PE) {
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port_speed = (uint8_t)((USB_HPCS & HPCS_PS) >> 17U);
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if (HPRT_PRTSPD_LOW_SPEED == port_speed) {
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USB_HFT = 6000U;
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if (HCTLR_6_MHZ != (USB_HCTL & HCTL_CLKSEL)) {
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if (USB_CORE_EMBEDDED_PHY == pudev->cfg.phy_interface) {
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USB_FSLSCLOCK_INIT(HCTLR_6_MHZ);
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}
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port_reset = 1U;
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}
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} else if(HPRT_PRTSPD_FULL_SPEED == port_speed) {
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USB_HFT = 48000U;
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if (HCTLR_48_MHZ != (USB_HCTL & HCTL_CLKSEL)) {
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if (USB_CORE_EMBEDDED_PHY == pudev->cfg.phy_interface) {
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USB_FSLSCLOCK_INIT(HCTLR_48_MHZ);
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}
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port_reset = 1U;
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}
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} else {
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/* for high speed device and others */
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port_reset = 1U;
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}
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}
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}
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if (port_reset) {
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usb_port_reset(pudev);
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}
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/* clear port interrupts */
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USB_HPCS = hostportdup;
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return retval;
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}
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/*!
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\brief handle the OUT channel interrupt
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\param[in] pudev: pointer to usb device instance
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\param[in] channel_num: host channel number which is in (0..7)
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\param[out] none
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\retval operation status
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*/
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static uint32_t usbh_intf_hc_out (usb_core_handle_struct *pudev, uint8_t channel_num)
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{
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uint32_t channel_intr = USB_HCHxINTF((uint16_t)channel_num);
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usb_hostchannel_struct *puhc = &pudev->host.host_channel[channel_num];
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channel_intr &= USB_HCHxINTEN((uint16_t)channel_num);
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if (channel_intr & HCHINTF_ACK) {
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if (URB_PING == puhc->urb_state) {
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puhc->err_count = 0U;
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USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
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usb_hostchannel_halt(pudev, channel_num);
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USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_TF;
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puhc->status = HC_XF;
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}
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USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_ACK;
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} else if (channel_intr & HCHINTF_REQOVR) {
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USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
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usb_hostchannel_halt(pudev, channel_num);
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USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_REQOVR;
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} else if (channel_intr & HCHINTF_TF) {
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puhc->err_count = 0U;
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USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
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usb_hostchannel_halt(pudev, channel_num);
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USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_TF;
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puhc->status = HC_XF;
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} else if (channel_intr & HCHINTF_STALL) {
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USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
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USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_STALL;
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usb_hostchannel_halt(pudev, channel_num);
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puhc->status = HC_STALL;
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} else if (channel_intr & HCHINTF_NAK) {
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puhc->err_count = 0U;
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USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
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usb_hostchannel_halt(pudev, channel_num);
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USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_NAK;
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puhc->status = HC_NAK;
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} else if (channel_intr & HCHINTF_USBER) {
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USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
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usb_hostchannel_halt(pudev, channel_num);
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puhc->err_count ++;
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puhc->status = HC_TRACERR;
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USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_USBER;
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} else if (channel_intr & HCHINTF_NYET) {
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puhc->err_count = 0U;
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USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
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puhc->status = HC_NYET;
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USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_NYET;
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} else if (channel_intr & HCHINTF_DTER) {
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USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
|
||
|
|
usb_hostchannel_halt(pudev, channel_num);
|
||
|
|
puhc->status= HC_DTGERR;
|
||
|
|
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_DTER;
|
||
|
|
} else if (channel_intr & HCHINTF_CH) {
|
||
|
|
USB_HCHxINTEN((uint16_t)channel_num) &= ~HCHINTEN_CHIE;
|
||
|
|
|
||
|
|
switch (puhc->status) {
|
||
|
|
case HC_XF:
|
||
|
|
puhc->urb_state = URB_DONE;
|
||
|
|
|
||
|
|
if (USB_EPTYPE_BULK == ((USB_HCHxCTL((uint16_t)channel_num) & HCHCTL_EPTYPE) >> 18)) {
|
||
|
|
puhc->data_tg_out ^= 1U;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case HC_NAK:
|
||
|
|
puhc->urb_state = URB_NOTREADY;
|
||
|
|
break;
|
||
|
|
case HC_NYET:
|
||
|
|
break;
|
||
|
|
case HC_STALL:
|
||
|
|
puhc->urb_state = URB_STALL;
|
||
|
|
break;
|
||
|
|
case HC_TRACERR:
|
||
|
|
if (3U == puhc->err_count) {
|
||
|
|
puhc->urb_state = URB_ERROR;
|
||
|
|
puhc->err_count = 0U;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_CH;
|
||
|
|
} else {
|
||
|
|
/* no operation */
|
||
|
|
}
|
||
|
|
|
||
|
|
return 1U;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief handle the IN channel interrupt
|
||
|
|
\param[in] pudev: pointer to usb device instance
|
||
|
|
\param[in] channel_num: host channel number which is in (0..7)
|
||
|
|
\param[out] none
|
||
|
|
\retval operation status
|
||
|
|
*/
|
||
|
|
static uint32_t usbh_intf_hc_in (usb_core_handle_struct *pudev, uint8_t channel_num)
|
||
|
|
{
|
||
|
|
uint8_t endp_type = 0U;
|
||
|
|
usb_hostchannel_struct *puhc = &pudev->host.host_channel[channel_num];
|
||
|
|
|
||
|
|
uint32_t channle_intf = USB_HCHxINTF((uint16_t)channel_num);
|
||
|
|
__IO uint32_t channel_ctrl = USB_HCHxCTL((uint16_t)channel_num);
|
||
|
|
|
||
|
|
channle_intf &= USB_HCHxINTEN((uint16_t)channel_num);
|
||
|
|
|
||
|
|
endp_type = (uint8_t)((channel_ctrl & HCHCTL_EPTYPE) >> 18U);
|
||
|
|
|
||
|
|
if (channle_intf & HCHINTF_ACK) {
|
||
|
|
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_ACK;
|
||
|
|
} else if (channle_intf & HCHINTF_STALL) {
|
||
|
|
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
|
||
|
|
puhc->status = HC_STALL;
|
||
|
|
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_NAK;
|
||
|
|
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_STALL;
|
||
|
|
|
||
|
|
/* NOTE: When there is a 'stall', reset also nak,
|
||
|
|
else, the pudev->host.status = HC_STALL
|
||
|
|
will be overwritten by 'nak' in code below */
|
||
|
|
channle_intf &= ~HCHINTF_NAK;
|
||
|
|
|
||
|
|
usb_hostchannel_halt(pudev, channel_num);
|
||
|
|
} else if (channle_intf & HCHINTF_DTER) {
|
||
|
|
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
|
||
|
|
usb_hostchannel_halt(pudev, channel_num);
|
||
|
|
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_NAK;
|
||
|
|
puhc->status = HC_DTGERR;
|
||
|
|
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_DTER;
|
||
|
|
} else {
|
||
|
|
/* no operation */
|
||
|
|
}
|
||
|
|
|
||
|
|
if (channle_intf & HCHINTF_REQOVR) {
|
||
|
|
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
|
||
|
|
usb_hostchannel_halt(pudev, channel_num);
|
||
|
|
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_REQOVR;
|
||
|
|
} else if (channle_intf & HCHINTF_TF) {
|
||
|
|
puhc->status = HC_XF;
|
||
|
|
puhc->err_count = 0U;
|
||
|
|
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_TF;
|
||
|
|
|
||
|
|
if ((USB_EPTYPE_CTRL == endp_type) || (USB_EPTYPE_BULK == endp_type)) {
|
||
|
|
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
|
||
|
|
usb_hostchannel_halt(pudev, channel_num);
|
||
|
|
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_NAK;
|
||
|
|
puhc->data_tg_in ^= 1U;
|
||
|
|
} else if (USB_EPTYPE_INTR == endp_type) {
|
||
|
|
channel_ctrl |= HCHCTL_ODDFRM;
|
||
|
|
USB_HCHxCTL((uint16_t)channel_num) = channel_ctrl;
|
||
|
|
puhc->urb_state = URB_DONE;
|
||
|
|
} else {
|
||
|
|
/* no operation */
|
||
|
|
}
|
||
|
|
} else if (channle_intf & HCHINTF_CH) {
|
||
|
|
USB_HCHxINTEN((uint16_t)channel_num) &= ~HCHINTEN_CHIE;
|
||
|
|
|
||
|
|
switch (puhc->status) {
|
||
|
|
case HC_XF:
|
||
|
|
puhc->urb_state = URB_DONE;
|
||
|
|
break;
|
||
|
|
case HC_TRACERR:
|
||
|
|
case HC_DTGERR:
|
||
|
|
puhc->err_count = 0U;
|
||
|
|
puhc->urb_state = URB_ERROR;
|
||
|
|
break;
|
||
|
|
case HC_STALL:
|
||
|
|
puhc->urb_state = URB_STALL;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
if (USB_EPTYPE_INTR == endp_type) {
|
||
|
|
puhc->data_tg_in ^= 1U;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_CH;
|
||
|
|
} else if (channle_intf & HCHINTF_USBER) {
|
||
|
|
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
|
||
|
|
(puhc->err_count)++;
|
||
|
|
puhc->status = HC_TRACERR;
|
||
|
|
usb_hostchannel_halt(pudev, channel_num);
|
||
|
|
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_USBER;
|
||
|
|
} else if (channle_intf & HCHINTF_NAK) {
|
||
|
|
if (USB_EPTYPE_INTR == endp_type) {
|
||
|
|
USB_HCHxINTEN((uint16_t)channel_num) |= HCHINTEN_CHIE;
|
||
|
|
usb_hostchannel_halt(pudev, channel_num);
|
||
|
|
} else if ((USB_EPTYPE_CTRL == endp_type) || (USB_EPTYPE_BULK == endp_type)) {
|
||
|
|
/* re-activate the channel */
|
||
|
|
channel_ctrl |= HCHCTL_CEN;
|
||
|
|
channel_ctrl &= ~HCHCTL_CDIS;
|
||
|
|
USB_HCHxCTL((uint16_t)channel_num) = channel_ctrl;
|
||
|
|
} else {
|
||
|
|
/* no operation */
|
||
|
|
}
|
||
|
|
|
||
|
|
puhc->status = HC_NAK;
|
||
|
|
USB_HCHxINTF((uint16_t)channel_num) = HCHINTF_NAK;
|
||
|
|
} else {
|
||
|
|
/* no operation */
|
||
|
|
}
|
||
|
|
|
||
|
|
return 1U;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief handle the rx fifo non-empty interrupt
|
||
|
|
\param[in] pudev: pointer to usb device instance
|
||
|
|
\param[out] none
|
||
|
|
\retval operation status
|
||
|
|
*/
|
||
|
|
static uint32_t usbh_intf_rxfifo_noempty (usb_core_handle_struct *pudev)
|
||
|
|
{
|
||
|
|
uint32_t count = 0U;
|
||
|
|
__IO uint8_t channel_num = 0U;
|
||
|
|
__IO uint32_t rx_status = 0U;
|
||
|
|
uint32_t usbh_ch_ctl_reg = 0U;
|
||
|
|
usb_hostchannel_struct *puhc;
|
||
|
|
|
||
|
|
/* disable the Rx status queue level interrupt */
|
||
|
|
USB_GINTEN &= ~GINTF_RXFNEIF;
|
||
|
|
|
||
|
|
rx_status = USB_GRSTATP;
|
||
|
|
channel_num = (uint8_t)(rx_status & GRSTATRP_CNUM);
|
||
|
|
puhc = &pudev->host.host_channel[channel_num];
|
||
|
|
|
||
|
|
switch ((rx_status & GRSTATRP_RPCKST) >> 17) {
|
||
|
|
case GRSTATR_RPCKST_IN:
|
||
|
|
count = (rx_status & GRSTATRP_BCOUNT) >> 4;
|
||
|
|
|
||
|
|
/* read the data into the host buffer. */
|
||
|
|
if ((count > 0U) && (puhc->xfer_buff != (void *)0)) {
|
||
|
|
usb_fifo_read(puhc->xfer_buff, (uint16_t)count);
|
||
|
|
|
||
|
|
/* manage multiple Xfer */
|
||
|
|
puhc->xfer_buff += count;
|
||
|
|
puhc->xfer_count += count;
|
||
|
|
|
||
|
|
if (USB_HCHxLEN((uint16_t)channel_num) & HCHLEN_PCNT) {
|
||
|
|
/* re-activate the channel when more packets are expected */
|
||
|
|
usbh_ch_ctl_reg = USB_HCHxCTL((uint16_t)channel_num);
|
||
|
|
usbh_ch_ctl_reg |= HCHCTL_CEN;
|
||
|
|
usbh_ch_ctl_reg &= ~HCHCTL_CDIS;
|
||
|
|
USB_HCHxCTL((uint16_t)channel_num) = usbh_ch_ctl_reg;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case GRSTATR_RPCKST_IN_XFER_COMP:
|
||
|
|
case GRSTATR_RPCKST_DATA_TOGGLE_ERR:
|
||
|
|
case GRSTATR_RPCKST_CH_HALTED:
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* enable the Rx status queue level interrupt */
|
||
|
|
USB_GINTEN |= GINTF_RXFNEIF;
|
||
|
|
|
||
|
|
return 1U;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief handle the incomplete periodic transfer interrupt
|
||
|
|
\param[in] pudev: pointer to usb device instance
|
||
|
|
\param[out] none
|
||
|
|
\retval operation status
|
||
|
|
*/
|
||
|
|
static uint32_t usbh_intf_iso_incomplete_xfer (usb_core_handle_struct *pudev)
|
||
|
|
{
|
||
|
|
__IO uint32_t gint_flag = 0U;
|
||
|
|
|
||
|
|
gint_flag = USB_HCHxCTL(0U);
|
||
|
|
USB_HCHxCTL(0U) = 0U;
|
||
|
|
|
||
|
|
gint_flag = 0U;
|
||
|
|
|
||
|
|
/* clear interrupt */
|
||
|
|
gint_flag |= GINTF_ISOONCIF;
|
||
|
|
USB_GINTF = gint_flag;
|
||
|
|
|
||
|
|
return 1U;
|
||
|
|
}
|