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27
28 /**
29 * @file usb_init.c
30 * @author Nations
31 * @version v1.2.0
32 *
33 * @copyright Copyright (c) 2022, Nations Technologies Inc. All rights reserved.
34 */
35 #include "usb_lib.h"
36
37 /* The number of current endpoint, it will be used to specify an endpoint */
38 uint8_t EPindex;
39 /* The number of current device, it is an index to the Device_Table */
40 /* uint8_t Device_no; */
41 /* Points to the USB_DeviceMess structure of current device */
42 /* The purpose of this register is to speed up the execution */
43 USB_DeviceMess* pInformation;
44 /* Points to the DEVICE_PROP structure of current device */
45 /* The purpose of this register is to speed up the execution */
46 DEVICE_PROP* pProperty;
47 /* Temporary save the state of Rx & Tx status. */
48 /* Whenever the Rx or Tx state is changed, its value is saved */
49 /* in this variable first and will be set to the EPRB or EPRA */
50 /* at the end of interrupt process */
51 uint16_t SaveState;
52 uint16_t wInterrupt_Mask;
53 USB_DeviceMess Device_Info;
54 USER_STANDARD_REQUESTS* pUser_Standard_Requests;
55
56 /**
57 * @brief USB system initialization
58 */
USB_Init(void)59 void USB_Init(void)
60 {
61 pInformation = &Device_Info;
62 pInformation->CtrlState = 2;
63 pProperty = &Device_Property;
64 pUser_Standard_Requests = &User_Standard_Requests;
65 /* Initialize devices one by one */
66 pProperty->Init();
67 /*Pull up DP*/
68 // _ClrDPCtrl();
69 _EnPortPullup();
70 // printf("DP_CTRL=%x\r\n", (*DP_CTRL));
71 }
72