参数资料
型号: DM164127
厂商: Microchip Technology
文件页数: 35/54页
文件大小: 0K
描述: KIT DEVELOPMENT USB 18F14/13K50
标准包装: 1
主要目的: 接口,USB 2.0 从
嵌入式: 是,MCU,8 位
已用 IC / 零件: PIC18F13K50,PIC18F14K50
主要属性: 全速(12Mbps),基于 MCU
次要属性: 4 实验室:枚举,HID 鼠标,HID 键盘,CDC 串行仿真器
已供物品: 3 块板,电缆,CD,连接器
产品目录页面: 659 (CN2011-ZH PDF)
相关产品: PIC18F14K50-I/MQ-ND - IC PIC MCU FLASH 768KX16 20-QFN
PIC18F13K50-I/MQ-ND - IC PIC MCU FLASH 512KX8 20-QFN
PIC18F13K50T-I/SS-ND - IC PIC MCU FLASH 8KB 20-SSOP
PIC18F13K50T-I/SO-ND - IC PIC MCU FLASH 8KB 20-SOIC
PIC18F13K50-I/SO-ND - IC PIC MCU FLASH 8K 1.8V 20-SOIC
PIC18F13K50-I/SS-ND - IC PIC MCU FLASH 8KB 20-SSOP
PIC18F13K50-I/P-ND - IC PIC MCU FLASH 4KX16 20-PDIP
PIC18F14K50T-I/SS-ND - IC PIC MCU FLASH 8KX8 20-SSOP
PIC18F14K50T-I/SO-ND - IC PIC MCU FLASH 8KX8 20-SOIC
PIC18F14K50-I/SS-ND - IC PIC MCU FLASH 8KX16 20-SSOP
更多...
FIGURE 2-7:
CDCTXSERVICE( ) STATE DIAGRAM
CDC_TX_READY
CDC_TX_BUSY
cdc_tx_lenl=0
mCDCUsartTxlsBusy()==0
cdc_tx_len==0
CDC_BULK_BD_IN.Cnt <Max EP Size
cdc_tx_len==0
CDC_BULK_BD_IN.Cnt <Max EP Size
CDC_TX_COMPLETING
CDC_TX_BUSY_ZLP
CDC_BULK_BD_IN.Cnt==0
2.7.2
Procedure
This application requires significant changes to the usb_descriptor.c file to configure
the PIC18F14K50 as a CDC device. Note the absence of the report descriptor. The
user is encouraged to spend some time reviewing the usb_descriptor.c file and com-
pare it against the information found in the Universal Serial Bus Class Definitions for
Communications Devices document referenced at the beginning of this chapter. Note
that this lab applies the same firmware found in the CDC – Serial Emulator application
example in Microchip’s Full-Speed USB Firmware Framework application examples
and can be used as a reference for this lab.
1. Create a new project for lab 4, using the Project Wizard, called “Project Lab 4”
as was done in the previous labs. The only files added, at this point, will be the
usb_descriptor.c and main.c source files, as well as a new unique descrip-
tor for Lab 4 rm18f14k50.lkr can be found in:
C:\LPCUSBDK_Labs\Lab4_files
Step through to close the Project Wizard. This time, the project will be set up to
resemble the application examples in the Framework using sub-folders to distin-
guish and organize the different source files in the Project window. All remaining
source/header files will be added from the Project window.
2. Right click on the Source Files folder in the Project window and select Create
Subfolder ...
? 2009 Microchip Technology Inc.
DS41356B-page 31
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