BotSense.bsI2C Python Module

The bsI2C module under the BotSense python package provides python applications an interface to communicate with proxied i2c devices. The underlining compiled extension module _bsI2C.so library provides the provides the shim between python calling conventions and the C libbsclient_i2c.[a,so] library.

See also

BotSense.bsI2C

Example:

#
# Example use of BotSense.bsI2C Module
#

import sys

import BotSense.BotSenseTypes as bsTypes
import BotSense.BotSenseError as bsError
import BotSense.BotSenseServer as bsServer
import BotSense.bsI2C as bsI2C

# create a BotSense client 
cli = bsTypes.BsClient('myi2c')

# connect to the bsProxy server at the given host name and listening port
try:
  bsServer.ServerConnect(cli, serverHostName="robot1", serverPort=9196)
except bsError.BotSenseError, inst:
  print inst
  sys.exit(8)

# open a virtual connection to a proxied I2C device
try:
  hndVConn = bsI2C.I2CReqOpen(cli, "/dev/i2c-1")
except bsError.BotSenseError, inst:
  print inst
  sys.exit(8)
print "Example: established virtual connection %d" % (hndVConn)

# the I2C device attached to the I2C bus
i2cAddr = 0x20

# execute a write-read transaction to the device
try:
  rsp = bsI2C.I2CReqTrans(cli, hndVConn, i2cAddr, '\x01', 6)
except bsError.BotSenseError, inst:
  print inst
  sys.exit(8)
print "Read response %s" % (repr(rsp))

# close the virtual connection
try:
  bsI2C.I2CReqClose(cli, hndVConn)
except bsError.BotSenseError, inst:
  print inst
  sys.exit(8)

# close the connection to the bsProxy server
try:
  bsServer.ServerDisconnect(cli)
except bsError.BotSenseError, inst:
  print inst
  sys.exit(8)

# delete the client
del cli