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GHI Electronics,LLC USBwiz User Manual

Introduction

Thanks to USBwiz chip, through RS232, UART, SPI or I2C interfaces you can access

many USB devices, including USB memory drives. Also, you can read/write files from

the any formatted SD or MMC card. The board comes with the D-SUB25 connector to

access all USBwiz's functionality. Look at the schematics for more details.

key features:

● Based on USBwiz chip

● Completely built and tested

● Plugs directly to any RS232 port, DTE (computer) or DCE (device)

● D-SUB25 with connections to all features, including UART, SPI and I2C.

● Designed to go directly in a plastic case

Rev.2.27 Page 5 of 64 www.ghielectronics.com

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USBwiz User Manual 1
Table of Contents 2
1. Introduction 3
1.3. USBwiz Circuit Boards 4
2. USBwiz Architecture 6
2.1. Block Diagram 7
2.2. LPC2134 Microcontroller 7
2.3. Commander 8
2.4. FAT File System 8
2.5. USB Hosting 8
USB supported Devices: 9
3. Pin-Out and Description 10
4.1. Selecting an Interface 13
4.2. UART Interface 13
4.3. SPI Interface Mode 13
4.4. I2C Interface Mode 15
All you need: 16
Step-by-Step: 16
6. 1. USBwiz Functions 20
6.3. USB Mass Storage 21
Keyboard 22
1. USBwiz Functions 23
6.5. USB Printers 28
6.6. USB Serial Devices 29
6.7. Raw USB Access 29
7. USBwiz Command Set 33
<CR> is a 35
<SP>d<CR> 35
VR - Get Version Number 37
BR - Set UART Baud Rate 37
RT - Reset Firmware 37
EE - Enable/Disable Echo 38
RS - Read Sector 38
WS - Write Sector 38
FM - Mount File System 38
DS - Device Switch 39
II - Get USB Device Info 39
SD - Initialize SD card 40
MS - Get Media Statistics 40
QF - Quick Format Media 40
NF - Get Next Directory Entry 41
MD - Make Directory 41
CD - Change Directory 41
RD - Remove Directory 41
FF - Flush File Data 42
CF - Close File Handle 43
RF - Read from File 43
WF - Write to File 43
SF - Split file 45
PF - Seek File 46
ZF - Resize File 46
DF - Delete File 46
IF - Find File or Folder 46
ND - Rename File or Folder 47
HR - Read HID Report 48
UP - Register USB Printer 48
PR - Reset USB Printer 48
PS - Get USB Printer Status 48
SR - Read Serial Device 49
SW - Write to Serial Device 49
EV - Enable Events 50
SK - Store Key 50
CK - Check Key 51
TF - Print File 52
RP - Read Pipe (Raw Command) 56
WP - Write Pipe (Raw Command) 57
8. USBwiz Boot Loader 58
8.3. Firmware Update 59
Error Codes 60
USBwiz Events 63
DISCLAIMER 64

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