GigaDevice Semiconductor GD32 Series User Manual

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GigaDevice Semiconductor Inc.

GD32 USBFS&USBHS

Firmware Library User Guide

Application Note

AN050

Table of Contents2
List of Figures4
List of Tables5
Introduction7
Table 1-1. Applicable Products7
Library Architecture and File Structure8
Library Architecture8
Figure 2-1. GD32 USBFS Firmware Library Framework8
File Structure9
Figure 2-2. USBFS Firmware Library Folder9
Figure 2-3. Device Folder9
Figure 2-4. Driver Folder10
Figure 2-5. Host Folder10
Figure 2-6. Ustd Folder11
USBFS Bottom Driver12
Table 3-1. USBFS Underlying File12
Table 3-2. Usb_Core.h/.C File Function12
USBFS Middle Layer Driver13
Host Middle Layer Driver Function13
Table 4-1. USBFS Middle Layer Driver File13
Table 4-2. Drv_Usb_Host.h/.C File Function13
Table 4-3. Drv_Usbh_Int.h/.C File Function13
Table 4-4. Usbh_Core.h/.C File Function14
Table 4-5. Usbh_Enum.h/.C File Function14
Table 4-6. Usbh_Pipe.h/.C File Function14
Device Middle Layer Driver Function15
Table 4-7. Usbh_Transc.h/.C File Function15
Table 4-8. Drv_Usb_Dev.h/.C File Function15
Table 4-9. Drv_Usbd_Int.h/.C File Function16
Table 4-10. Usbd_Core.h/.C File Function16
Table 4-11. Usbd_Enum.h/.C File Function16
Table 4-12. Usbd_Transc.h/.C File Function17
USBFS Device Library18
Device Library Configuration18
Usbd_Conf.h18
Usb_Conf.h18
Table 5-1. Usbd_Conf.h Configuration Description18
Firmware Library Process19
Table 5-2. Usb_Conf.h Configuration Description19
Descriptor20
Figure 5-1. Firmware Library Flowchart20
Figure 5-2. Device Class File Path21
Interrupt Handling22
Table 5-3. USBFS Device Interruption22
USB Device Class Interface26
Figure 5-3. Device Class File27
Data Transmission Process28
IN Direction28
OUT Direction28
USB Device Class Routine29
Audio29
Figure 5-4. AUDIO Macro Configuration29
Table 5-4. AUDIO Relevant Descriptors29
Table 5-5. AUDIO Device Class Interface Function30
Table 5-6. AUDIO Device Class Request30
Figure 5-5. AUDIO Device Class31
Table 5-7. AUDIO User Interface Functions31
Figure 5-6. Audio Playback File32
CDC33
Figure 5-7. Audio System Sound Configuration33
Figure 5-8. Audio Recording Listening Configuration33
Table 5-8. CDC Relevant Descriptors34
Table 5-9. CDC Device Class Interface Functions34
Figure 5-9. CDC Device Class35
Table 5-10. CDC Device Class Request35
Table 5-11. CDC User Interface Functions35
Dfu36
Figure 5-10. Virtual Serial Data Transmitting and Receiving36
Figure 5-11. Virtual Serial Port Large Data Transmitting and Receiving36
Figure 5-12. DFU State Machine Flow Chart37
Table 5-12. Dfurelevant Descriptors37
Table 5-13. DFU Device Class Interface Functions38
Table 5-14. DFU Device Class Request38
Figure 5-13. DFU Device Class39
Table 5-15. DFU User Interface Functions39
Figure 5-14. All in One Connection40
Figure 5-15. All in One Uploading41
Figure 5-16. All in One Option Byte Operation41
Msc42
Table 5-16. MSC Device Class Interface Functions42
Table 5-17. MSC Device Class Request42
Table 5-18. MSC User Interface Functions43
Figure 5-17. MSC Device Class44
Figure 5-18. MSC Device Formatting44
Figure 5-19. MSC Device Read-Write Test44
Hid45
Table 5-19. HID Relevant Descriptors45
Table 5-20. HID Device Class Interface Functions45
Table 5-21. HID Device Class Request45
Figure 5-20. HID Device Class46
Table 5-22. HID User Interface Functions46
USB Printer47
Table 5-23. Printer Device Class Interface Function47
Table 5-24. Printer Device Class Request47
Figure 5-21. Printer Device Class48
USBFS Host Library49
Host Library Configuration49
Usbh_Conf.h49
Usb_Conf.h49
Table 6-1. Usbh_Conf.h Configuration Description49
Host VBUS Configuration50
Table 6-2. Usb_Conf.h Configuration Description50
Figure 6-1. Construct Circuit through Triode to Control VBUS51
Interrupt Handling52
Figure 6-2. Control VBUS by Logic Chip Circuit52
Table 6-3. USBFS Host Interrupt52
State Machine Process56
USB Host Library User Interface56
Figure 6-3. USB Host State Machine56
Table 6-4. USB Host Library User Interface Function57
USB Host Library Device Class Interface58
HID Device Class58
Figure 6-4. Host Device Class Interface File Path58
Table 6-5. HID Host Class Library Function59
MSC Device Class60
Table 6-6. MSC Host Class Library Function60
USB Host Library Routine61
Hid Host61
Msc Host62
Figure 6-5. Hid Host Routine Operation Diagram62
Figure 6-6. Routine for Mouse-Over Display of HID Host62
Figure 6-7. Routine for HID Host Keyboard Display62
Figure 6-8. MSC Host Routine Operation Steps63
Figure 6-9. MSC Host Routine Display63
Revision History64
Table 7-1. Revision History64

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GigaDevice Semiconductor GD32 Series Specifications

General

Brand	GigaDevice Semiconductor
Model	GD32 Series
Category	Computer Hardware
Language	English

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