Commit 518a3b34 authored by Ivan Tyagov's avatar Ivan Tyagov

Encapsulate in class.

parent 8bd9a388
......@@ -26,19 +26,47 @@ from pymodbus.transaction import (ModbusRtuFramer,
from custom_message import CustomModbusRequest
from pyA20Lime2 import i2c
# XXX: create Lime2MODIOCommunicator class that encapcuslates I2C com
def sendI2Ccommand(code):
# init I2C
i2c.init("/dev/i2c-1")
# name fo device within Lime2
DEFAULT_MOD_IO_DEVICE_NAME = "/dev/i2c-1"
class Lime2MODIOI2c:
"""
Class to communication from Lime2 -> MOD-IO (over I2c)
XXX: keep relay state internally as take into account to preserver relay state!
"""
def __init__(self, mod_io_device_name = DEFAULT_MOD_IO_DEVICE_NAME):
self.mod_io_device_name = mod_io_device_name
def open(self):
"""
Open connection to MOD-IO.
"""
i2c.init(self.mod_io_device_name)
i2c.open(0x58)
def close(self):
"""
Close connection to MOD-IO.
"""
i2c.close()
def write(self, code):
"""
Write / send frommnad to device.
"""
self.open()
while 1:
try:
i2c.write([0x10, code])
break
except:
print("Failed co sent command.")
i2c.close()
# be a good citizen and close
self.close()
# --------------------------------------------------------------------------- #
......@@ -51,7 +79,9 @@ logging.basicConfig(format=FORMAT)
log = logging.getLogger()
log.setLevel(logging.DEBUG)
sendI2Ccommand(0x00) # all relays off
mod_io = Lime2MODIOI2c()
mod_io.write(0x00) # all relays off
class LimeModbusSlaveContext(ModbusSlaveContext):
......@@ -73,18 +103,18 @@ class LimeModbusSlaveContext(ModbusSlaveContext):
# relay 1
if int(address) == 0:
if value == 1:
sendI2Ccommand(0x01)
mod_io.write(0x01)
elif value == 0:
sendI2Ccommand(0x00)
mod_io.write(0x00)
# relay 2
if int(address) == 1:
# relay1
if value == 1:
# on
sendI2Ccommand(0x03)
mod_io.write(0x03)
elif value == 0:
sendI2Ccommand(0x00)
mod_io.write(0x00)
def run_async_server():
......@@ -118,5 +148,5 @@ if __name__ == "__main__":
run_async_server()
# switch off all
sendI2Ccommand(0x00)
mod_io.write(0x00)
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