Table of Contents

1. Device Drivers
   1. Overview
2. Beeper
3. DIO
   1. Digital I/O
   2. DIO Events
      1. About
      2. The Code
   3. DIO Counting
      1. Description
      2. Example
4. Display
   1. Fonts
5. Network
   1. Network File System (NFS)
   2. Weight Server -- Network Access
   3. Network Programming
      1. 825 TCP/IP Server Example
      2. 825 TCP/IP Client Example
   4. Send E-mail from 825
   5. FTP
   6. Batch file to upload a file from a PC to an 825 using the 825 web …
   7. Batch file to download a file from an 825 to a PC using the 825 web …
6. Serial Ports
   1. Using Serial Ports for Linux Shell
   2. Generic Serial Port Use
7. USB Support
   1. 825 USB A Ports (2)
      1. USB Mass Storage
         1. Accessing USB storage from a program
      2. USB Keyboards
      3. USB Printing
         1. Compatible USB Printers
      4. USB Hubs
   2. 825 USB B Port (1)
      1. USB to PC communications
8. Weighing
   1. Get Weight
      1. Command prompt testing
      2. Access the weight data from a program

Device Support

Device Drivers

Overview

For testing some device drivers may be loaded or unloaded dynamically or a startup script may be used to automatically load the modules.

Driver	Module Filename	Device Nodes	Depends on other modules
Mainboard communications	mnbd-comm.ko	/dev/mnbd /dev/wt1 .. /dev/wt10
USB Hub	isp1520.ko	i2c-mcf, i2c-core
Keypad/Beeper	max734x.ko	/dev/cardbeep	I2c-mcf, i2c-core

Device driver operation may be tested from command line for some functions, for example:

# echo “A,B,C” > /dev/cardbeep <CR>

Play notes A, B, and C on beeper. (refer to beeper section for more details)

# echo “W” > /dev/wt1 <CR>

Request weight from scale one.

# cat < /dev/wt1 <CR>

Display response to previous request from scale 1 as a weight structure converted to hexadecimal.

Error: Failed to load processor Lineno

No macro or processor named 'Lineno' found

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