diff -r 61809bb871bf -r 022e881b758e plotter/gpib.py --- a/plotter/gpib.py Fri Jan 25 21:01:30 2008 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,64 +0,0 @@ -""" -gpib: create serial connection to GPIB-USB device (ProLogix is the -only supported device for now). -""" -import serial -from serial.serialutil import SerialException -import time - -class ConnectionError(Exception): - pass - -class Constants(object): - def __init__(self): - self.constants = {} - self.descriptions = {} - self.rev_constants = {} - for v, k, m in self._constants: - self.k = v - self.constants[v] = k - self.rev_constants[k] = v - self.descriptions[v] = m - - def __getitem__(self, k): - if isinstance(k, basestring): - return self.rev_constants[k] - else: - return self.constants[k] - - def get_description(self, k): - if isinstance(k, basestring): - k = self.rev_constants[k] - return self.descriptions[k] - - -class MODE(Constants): - _constants = [(1, "CONTROLLER", "Set device as Controller in Charge"), - (0, "DEVICE", "Set device as simple listener"), - ] -# TODO -# class STATUS_BYTE(Constants): -# # IEEE 488.2 Status Byte constants -# MAV = 0x10 # Message AVailable: bit 4 of the Status Byte -# ESB = 0x20 # Event Status Bit: bit 5 of the Status Byte -# MSS = 0x40 # Master Summary Status bit: bit 6 of the Status Byte (NOT -# # sent in response to a serial poll) -# RQS = 0x40 # Request Service: bit 6 of the Status Byte (when sent in -# # response to a serial poll) -# class SESR(Constants): -# # SESR constants (Standard Event Status Register) -# PON = 0x80 # Power On: Power has been turned On since last register -# # read access -# URQ = 0x40 # User Request: the user has activated some device control -# # (whatever the Remote Local state is) -# CME = 0x20 # Command Error -# EXE = 0x10 # Execution Error -# DDE = 0x08 # Device Dependant Error -# QYE = 0x04 # QuerY Error (attempt to read data while Output Queue is -# # empty, or data in the OQ was lost) -# RQC = 0x02 # Request Control: tell the CiC that the device wants to -# # become the CiC -# OPC = 0x01 # Operation Complete: device has completed any pending -# # operation (ready to accept new commands). This bit is -# # generated in response to a OPC command. -