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usb_host_internal.h
1/*
2 * USB Host Internal Definitions
3 *
4 * Internal header for USB Host driver implementation
5 */
6
7#ifndef _USB_HOST_INTERNAL_H_
8#define _USB_HOST_INTERNAL_H_
9
10#include <usb_host_config.h>
11#include <nbrtos.h>
12#include <stdint.h>
13
14/* Include NXP USB Host stack headers */
15#include "nxp_usb.h"
16#include <usb_host.h>
17#include <usb_host_msd.h>
18
19#ifdef __cplusplus
20extern "C" {
21#endif
22
23/*******************************************************************************
24 * MSD Class Definitions
25 ******************************************************************************/
26
27/* MSD class codes (for reference - also defined in NXP headers) */
28#ifndef USB_HOST_MSD_CLASS_CODE
29#define USB_HOST_MSD_CLASS_CODE (0x08U)
30#endif
31#ifndef USB_HOST_MSD_SUBCLASS_CODE_UFI
32#define USB_HOST_MSD_SUBCLASS_CODE_UFI (0x04U)
33#endif
34#ifndef USB_HOST_MSD_SUBCLASS_CODE_SCSI
35#define USB_HOST_MSD_SUBCLASS_CODE_SCSI (0x06U)
36#endif
37#ifndef USB_HOST_MSD_PROTOCOL_BULK
38#define USB_HOST_MSD_PROTOCOL_BULK (0x50U)
39#endif
40
41/* MSD run states for our application */
42typedef enum {
43 kMSD_AppRunIdle = 0,
44 kMSD_AppRunSetInterface,
45 kMSD_AppRunWaitSetInterface,
46 kMSD_AppRunMassStorageTest,
47 kMSD_AppRunReadCapacity,
48 kMSD_AppRunReady,
49} msd_app_run_state_t;
50
51/* Device attach states */
52typedef enum {
53 kMSD_DevIdle = 0,
54 kMSD_DevAttached,
55 kMSD_DevDetached,
56} msd_dev_state_t;
57
58/* Application-level MSD instance structure
59 * This wraps the NXP class driver with additional application state */
60typedef struct _msd_app_instance {
61 /* NXP USB Host handles */
62 usb_host_configuration_handle configHandle;
63 usb_device_handle deviceHandle;
64 usb_host_class_handle classHandle; /* Pointer to NXP usb_host_msd_instance_t */
65 usb_host_interface_handle interfaceHandle;
66
67 /* Command buffer for MSD operations */
68 uint8_t *commandBuffer;
69
70 /* Application state tracking */
71 uint8_t prevDeviceState;
72 uint8_t deviceState; /* msd_dev_state_t */
73 uint8_t runWaitState; /* msd_app_run_state_t */
74 uint8_t runState; /* msd_app_run_state_t */
75
76 /* Device geometry (from READ CAPACITY) */
77 uint32_t sectorSize;
78 uint32_t sectorCount;
79} msd_app_instance_t;
80
81/*******************************************************************************
82 * Global Variables (defined in usb_host_init.cpp)
83 ******************************************************************************/
84
85extern usb_host_handle g_UsbHostHandle;
86extern msd_app_instance_t g_MsdAppInstance;
87extern OS_SEM *g_MsdEventSem;
88extern volatile int g_MsdStatus;
89
90/*******************************************************************************
91 * Platform Integration Functions (implemented in usb_host_init.cpp)
92 ******************************************************************************/
93
94/* Clock and PHY initialization */
95void USB_HostClockInit(void);
96void USB_HostPhyInit(void);
97
98/* ISR and interrupt enable */
99void USB_HostIsrEnable(void);
100void USB_HostIsrDisable(void);
101
102/* Internal MSD event callback */
103usb_status_t USB_HostMsdEvent(usb_device_handle deviceHandle,
104 usb_host_configuration_handle configurationHandle,
105 uint32_t eventCode);
106
107/* MSD task function */
108void USB_HostMsdTask(void *param);
109
110#ifdef __cplusplus
111}
112#endif
113
114#endif /* _USB_HOST_INTERNAL_H_ */
OS_SEM
Semaphores are used to control access to shared resources or or to communicate between tasks in a mul...
Definition nbrtos.h:407