2 * @brief Main USB service task management
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5 * Copyright(C) NXP Semiconductors, 2012
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6 * Copyright(C) Dean Camera, 2011, 2012
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7 * All rights reserved.
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10 * Software that is described herein is for illustrative purposes only
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11 * which provides customers with programming information regarding the
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12 * LPC products. This software is supplied "AS IS" without any warranties of
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13 * any kind, and NXP Semiconductors and its licensor disclaim any and
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14 * all warranties, express or implied, including all implied warranties of
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15 * merchantability, fitness for a particular purpose and non-infringement of
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16 * intellectual property rights. NXP Semiconductors assumes no responsibility
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17 * or liability for the use of the software, conveys no license or rights under any
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18 * patent, copyright, mask work right, or any other intellectual property rights in
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19 * or to any products. NXP Semiconductors reserves the right to make changes
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20 * in the software without notification. NXP Semiconductors also makes no
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21 * representation or warranty that such application will be suitable for the
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22 * specified use without further testing or modification.
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25 * Permission to use, copy, modify, and distribute this software and its
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26 * documentation is hereby granted, under NXP Semiconductors' and its
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27 * licensor's relevant copyrights in the software, without fee, provided that it
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28 * is used in conjunction with NXP Semiconductors microcontrollers. This
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29 * copyright, permission, and disclaimer notice must appear in all copies of
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34 #define __INCLUDE_FROM_USBTASK_C
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35 #define __INCLUDE_FROM_USB_DRIVER
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36 #include "USBTask.h"
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38 volatile bool USB_IsInitialized;
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40 /* This structure must be 4 bytes aligned */
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42 USB_Request_Header_t USB_ControlRequest ATTR_ALIGNED(4) __BSS(USBRAM_SECTION);
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44 #if defined(USB_CAN_BE_HOST) && !defined(HOST_STATE_AS_GPIOR)
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45 volatile uint8_t USB_HostState[MAX_USB_CORE];
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48 #if defined(USB_CAN_BE_DEVICE) && !defined(DEVICE_STATE_AS_GPIOR)
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49 volatile uint8_t USB_DeviceState[MAX_USB_CORE];
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52 void USB_USBTask(uint8_t corenum, uint8_t mode)
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54 #if defined(USB_HOST_ONLY)
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55 USB_HostTask(corenum);
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56 #elif defined(USB_DEVICE_ONLY)
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57 USB_DeviceTask(corenum);
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59 if (mode == USB_MODE_Device)
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60 USB_DeviceTask(corenum);
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61 else if (mode == USB_MODE_Host)
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62 USB_HostTask(corenum);
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66 #if defined(USB_CAN_BE_DEVICE)
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67 static void USB_DeviceTask(uint8_t corenum)
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69 if (USB_DeviceState[corenum] != DEVICE_STATE_Unattached)
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71 uint8_t PrevEndpoint = Endpoint_GetCurrentEndpoint(corenum);
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73 Endpoint_SelectEndpoint(corenum, ENDPOINT_CONTROLEP);
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75 if (Endpoint_IsSETUPReceived(corenum))
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76 USB_Device_ProcessControlRequest(corenum);
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78 Endpoint_SelectEndpoint(corenum, PrevEndpoint);
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83 #if defined(USB_CAN_BE_HOST)
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84 static void USB_HostTask(uint8_t corenum)
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89 PrevPipe = Pipe_GetCurrentPipe(corenum);
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90 Pipe_SelectPipe(corenum,PIPE_CONTROLPIPE);
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91 USB_Host_ProcessNextHostState(corenum);
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92 Pipe_SelectPipe(corenum,PrevPipe);
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