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Olivier Kaufmann authoredcae51594
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from ohmpi.hardware_components import CtlAbstract
import board # noqa
import busio # noqa
from adafruit_extended_bus import ExtendedI2C # noqa
import minimalmodbus # noqa
import os
from ohmpi.utils import get_platform
from gpiozero import CPUTemperature # noqa
class Ctl(CtlAbstract):
def __init__(self, **kwargs):
kwargs.update({'board_name': os.path.basename(__file__).rstrip('.py')})
modbus_baudrate = kwargs.pop('modbus_baudrate', 9600)
modbus_bitesize = kwargs.pop('modbus_bitesize', 8)
modbus_timeout = kwargs.pop('modbus_timeout', 1)
modbus_debug = kwargs.pop('modbus_debug', False)
modbus_parity = kwargs.pop('modbus_parity', 'N')
modbus_mode = kwargs.pop('modbus_mode', minimalmodbus.MODE_RTU)
modbus_port = kwargs.pop('modbus_port', '/dev/ttyUSB0')
modbus_slave_address = kwargs.pop('modbus_slave_address', 1)
super().__init__(**kwargs)
self.interfaces = dict()
# I2C
self.interfaces['i2c'] = busio.I2C(board.SCL, board.SDA) # noqa
# Extended I2C
try:
self.interfaces['i2c_ext'] = ExtendedI2C(4) # 4 is defined
except Exception as e:
self.exec_logger.warning(f'Could not initialize Extended I2C:\n{e}')
# modbus
try:
self.interfaces['modbus'] = minimalmodbus.Instrument(port=modbus_port, slaveaddress=modbus_slave_address)
self.interfaces['modbus'].serial.baudrate = modbus_baudrate # Baud rate 9600 as listed in doc
self.interfaces['modbus'].serial.bytesize = modbus_bitesize #
self.interfaces['modbus'].serial.timeout = modbus_timeout # greater than 0.5 for it to work
self.interfaces['modbus'].debug = modbus_debug #
self.interfaces['modbus'].serial.parity = modbus_parity # No parity
self.interfaces['modbus'].mode = modbus_mode # RTU mode
except Exception as e:
self.exec_logger.warning(f'Could not initialize Extended modbus:\n{e}')
platform, on_pi = get_platform()
assert on_pi
self.board_name = platform
self._cpu_temp_available = True
self.max_cpu_temp = 85. # °C
@property
def _cpu_temp(self):
return CPUTemperature().temperature