本文整理汇总了C++中USBDevice::handle_packet方法的典型用法代码示例。如果您正苦于以下问题：C++ USBDevice::handle_packet方法的具体用法？C++ USBDevice::handle_packet怎么用？C++ USBDevice::handle_packet使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类USBDevice的用法示例。
在下文中一共展示了USBDevice::handle_packet方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: ohci_service_td
//.........这里部分代码省略.........
printf(" %.2x", ohci->usb_buf[i]);
dprintf("\n");
}
#endif
if (completion) {
ret = ohci->usb_packet.len;
ohci->async_td = 0;
ohci->async_complete = 0;
} else {
ret = USB_RET_NODEV;
for (i = 0; i < ohci->num_ports; i++) {
dev = ohci->rhport[i].port.dev;
if ((ohci->rhport[i].ctrl & OHCI_PORT_PES) == 0)
continue;
if (ohci->async_td) {
/* ??? The hardware should allow one active packet per
endpoint. We only allow one active packet per controller.
This should be sufficient as long as devices respond in a
timely manner.
*/
#ifdef DEBUG_PACKET
dprintf("Too many pending packets\n");
#endif
return 1;
}
ohci->usb_packet.pid = pid;
ohci->usb_packet.devaddr = OHCI_BM(ed->flags, ED_FA);
ohci->usb_packet.devep = OHCI_BM(ed->flags, ED_EN);
ohci->usb_packet.data = ohci->usb_buf;
ohci->usb_packet.len = len;
ohci->usb_packet.complete_cb = ohci_async_complete_packet;
ohci->usb_packet.complete_opaque = ohci;
ret = dev->handle_packet(dev, &ohci->usb_packet);
if (ret != USB_RET_NODEV)
break;
}
#ifdef DEBUG_PACKET
dprintf("ret=%d\n", ret);
#endif
if (ret == USB_RET_ASYNC) {
ohci->async_td = addr;
return 1;
}
}
if (ret >= 0) {
if (dir == OHCI_TD_DIR_IN) {
ohci_copy_td(&td, ohci->usb_buf, ret, 1);
#ifdef DEBUG_PACKET
dprintf(" data:");
for (i = 0; i < ret; i++)
printf(" %.2x", ohci->usb_buf[i]);
dprintf("\n");
#endif
} else {
ret = len;
}
}
/* Writeback */
if (ret == len || (dir == OHCI_TD_DIR_IN && ret >= 0 && flag_r)) {
/* Transmission succeeded. */
if (ret == len) {
td.cbp = 0;
} else {
td.cbp += ret;示例2: ohci_service_iso_td
//.........这里部分代码省略.........
(end_offset & OHCI_OFFSET_MASK);
}
} else {
/* Last packet in the ISO TD */
end_addr = iso_td.be;
}
if ((start_addr & OHCI_PAGE_MASK) != (end_addr & OHCI_PAGE_MASK)) {
len = (end_addr & OHCI_OFFSET_MASK) + 0x1001
- (start_addr & OHCI_OFFSET_MASK);
} else {
len = end_addr - start_addr + 1;
}
if (len && dir != OHCI_TD_DIR_IN) {
ohci_copy_iso_td(start_addr, end_addr, ohci->usb_buf, len, 0);
}
if (completion) {
ret = ohci->usb_packet.len;
} else {
ret = USB_RET_NODEV;
for (i = 0; i < ohci->num_ports; i++) {
dev = ohci->rhport[i].port.dev;
if ((ohci->rhport[i].ctrl & OHCI_PORT_PES) == 0)
continue;
ohci->usb_packet.pid = pid;
ohci->usb_packet.devaddr = OHCI_BM(ed->flags, ED_FA);
ohci->usb_packet.devep = OHCI_BM(ed->flags, ED_EN);
ohci->usb_packet.data = ohci->usb_buf;
ohci->usb_packet.len = len;
ohci->usb_packet.complete_cb = ohci_async_complete_packet;
ohci->usb_packet.complete_opaque = ohci;
ret = dev->handle_packet(dev, &ohci->usb_packet);
if (ret != USB_RET_NODEV)
break;
}
if (ret == USB_RET_ASYNC) {
return 1;
}
}
#ifdef DEBUG_ISOCH
printf("so 0x%.8x eo 0x%.8x\nsa 0x%.8x ea 0x%.8x\ndir %s len %zu ret %d\n",
start_offset, end_offset, start_addr, end_addr, str, len, ret);
#endif
/* Writeback */
if (dir == OHCI_TD_DIR_IN && ret >= 0 && ret <= len) {
/* IN transfer succeeded */
ohci_copy_iso_td(start_addr, end_addr, ohci->usb_buf, ret, 1);
OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
OHCI_CC_NOERROR);
OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, ret);
} else if (dir == OHCI_TD_DIR_OUT && ret == len) {
/* OUT transfer succeeded */
OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
OHCI_CC_NOERROR);
OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, 0);
} else {
if (ret > (ssize_t) len) {
printf("usb-ohci: DataOverrun %d > %zu\n", ret, len);
OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
OHCI_CC_DATAOVERRUN);
OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE,