AD转换与USB 通讯实验

AD转换与USB 通讯实验.rar (431.5 KB, 下载次数: 4 )

AD转换与USB 通讯实验
This directory contains 8051 firmware for the Cypress Semiconductor EZ-USB FX2
chip.
The purpose of this code is to demonstrate how to utilize EZUSB FX2 Slave FIFOs.
It configures FX2 as follows:
01).  EP2 512 2x BULK OUT - 8-bit async AUTO mode
02).  EP4 512 2x BULK IN  - 8-bit async AUTO mode
03).  EP6 512 2x BULK OUT - 8-bit async AUTO mode
04).  EP8 512 2x BULK IN  - 8-bit async AUTO mode
05).  FIFO strobes and flags are all active low
06).  FLAGA - fixed EP2EF
07).  FLAGB - fixed EP4FF
08).  FLAGC - fixed EP6EF
09).  FLAGD - fixed EP8FF
10).  SLCS isn't being used
11).  FX2 can't signal zerolen OUT token to the master
.....from the ext. master (xmaster in this case is FX in GPIF mode, CY3671 DK)
01).  512 byte buffer for EP2 OUT -> EP6 IN data
02).  512 byte buffer for EP4 OUT -> EP8 IN data
03).  xmaster just loops back the data
05).  xmaster supervises "not empty" / "not full" / "pktend" status
06).  peripheral interface functions in 8-bit async mode
.....from "the user":
01).  CY3681 DK is connected to a HS host controller
02).  EP2 512 2x BULK OUT data is looped back to EP6 512 2x BULK IN
03).  EP4 512 2x BULK OUT data is looped back to EP8 512 2x BULK IN
04).  EZUSB Control Panel to download "FX2" example firmware
05).  EZUSB Control Panel to xfr OUT/IN tokens via CY3681 DK

The "tcxmaster.hex" file loads into internal memory.
...issue "build -i" at the command prompt...
This example is for illustrative purpose(s) and unless you have an ext. master
that emulates the testing environment this example won't actually produce
expected results when downloaded via Control Panel.  The external master in this
case is EZUSB FX (CY3671 DK) running in GPIF master mode