B&B Electronics Parallel Printer Card PIOC Uživatelský manuál stáhnout pdf (Strana 15)

GHI Electronics,LLC USBwiz User Manual

Communication Interface selection

● SCK is idle high

● SCK is lower that 7Mhz. (1.75 in boot loader)

● Data is shifted out MSB first

● Data is shifted on the rising edge

For further details and timing diagrams, consult LPC2134 datasheet and manual from NXP

Semiconductor.

4.4. I2C Interface Mode

Four pins are needed for I2C communication. The USER_I2C_SCL and USER_I2C_SDA

are the two I2C bus lines. I2C_DATARDY and I2C_BUSY lines work exactly the same way

as SPI_DATARDY and SPI_BUSY work. USBwiz runs in slave I2C mode always. The

slave address of USBwiz is 0xA4. This address is fixed and can’t be changed.

Rev.2.27 Page 15 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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