org.lsst.ccs.drivers.ad
Class Cypress

java.lang.Object
  org.lsst.ccs.drivers.ad.Cypress

Direct Known Subclasses:

I2cBus, SpiBus

public class Cypress
extends Object

Routines to access Cypress EZUSB chip functions on an Analog Devices evaluation board

Author:

Owen Saxton

Constructor Summary

Cypress(org.lsst.ccs.drivers.usb.UsbComm com)
Constructor

Method Summary

void	load(String name, boolean force) Loads memory from a file
int	readMemory(int addr, byte[] data, int timeout) Reads byte array from memory
int	readMemory(int addr, byte[] data, int offs, int leng, int timeout) Reads byte array from memory
void	setReset(boolean on) Sets or clears the RESET state
int	writeMemory(int addr, byte[] data) Writes byte array to memory
int	writeMemory(int addr, byte[] data, int offs, int leng) Writes byte array to memory

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Cypress

public Cypress(org.lsst.ccs.drivers.usb.UsbComm com)

Constructor

Method Detail

setReset

public void setReset(boolean on)
              throws javax.usb.UsbException

Sets or clears the RESET state

Parameters:

on - If true, sets RESET, otherwise clears RESET

Throws:

javax.usb.UsbException

readMemory

public int readMemory(int addr,
                      byte[] data,
                      int timeout)
               throws javax.usb.UsbException

Reads byte array from memory

Parameters:

addr - The first address to read

data - The array of bytes to read into

timeout - The maximum time to wait (ms), or 0 for no timeout

Returns:

The number of bytes read.

Throws:

javax.usb.UsbException

readMemory

public int readMemory(int addr,
                      byte[] data,
                      int offs,
                      int leng,
                      int timeout)
               throws javax.usb.UsbException

Reads byte array from memory

Parameters:

addr - The first address to read

data - The array of bytes to read into

offs - The offset in data to the first byte to read into

leng - The number of bytes to read

timeout - The maximum time to wait (ms), or 0 for no timeout

Returns:

The number of bytes read.

Throws:

javax.usb.UsbException

writeMemory

public int writeMemory(int addr,
                       byte[] data)
                throws javax.usb.UsbException

Writes byte array to memory

Parameters:

addr - The first address to write

data - The array of bytes to write

Returns:

The number of bytes written.

Throws:

javax.usb.UsbException

writeMemory

public int writeMemory(int addr,
                       byte[] data,
                       int offs,
                       int leng)
                throws javax.usb.UsbException

Writes byte array to memory

Parameters:

addr - The first address to write

data - The array of bytes to write

offs - The offset in data to the first byte to write from

leng - The number of bytes to write

Returns:

The number of bytes written.

Throws:

javax.usb.UsbException

load

public void load(String name,
                 boolean force)
          throws javax.usb.UsbException

Loads memory from a file

Parameters:

name - The name of the "hex" file to load

force - If true, force the load even if memory appears to be already loaded correctly.

Throws:

javax.usb.UsbException