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kdschlosserkdschlosser
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Updates io expander framework and drivers
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9 files changed

+4153
-181
lines changed

9 files changed

+4153
-181
lines changed

‎api_drivers/common_api_drivers/io_expander/axp192.py.wip

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‎api_drivers/common_api_drivers/io_expander/ch422g.py

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from micropython import const # NOQA
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import io_expander_framework
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import i2c
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EXIO1 = io_expander_framework.EXIO1
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EXIO2 = io_expander_framework.EXIO2
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EXIO3 = io_expander_framework.EXIO3
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EXIO4 = io_expander_framework.EXIO4
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EXIO5 = io_expander_framework.EXIO5
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EXIO6 = io_expander_framework.EXIO6
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EXIO7 = io_expander_framework.EXIO7
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EXIO8 = io_expander_framework.EXIO8
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I2C_ADDR = 0x24 # 36 00100100
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BITS = 8
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_CH422G_REG_IN = const(0x26) # 38 00100110
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_CH422G_REG_OUT = const(0x38) # 56 00111000
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_REG_INPUT = const(0)
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_REG_OUTPUT = const(1)
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_REG_DIRECTION = const(2)
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class Pin(io_expander_framework.Pin):
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_output_states = 0x00
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_i2c_bus: i2c.I2C.Bus = None
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_reg_in: i2c.I2C.Device = None
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_reg_out: i2c.I2C.Device = None
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_reg_int_pins = []
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@classmethod
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def set_device(cls, device):
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io_expander_framework.Pin.set_device.__func__(cls, device)
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cls._reg_in = i2c.I2C.Device(
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bus=device._bus, # NOQA
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dev_id=_CH422G_REG_IN
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)
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cls._reg_out = i2c.I2C.Device(
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bus=device._bus, # NOQA
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dev_id=_CH422G_REG_OUT
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)
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@property
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def __bit(self):
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return 1 << self._id
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@property
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def _mode(self):
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return 1
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@_mode.setter
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def _mode(self, value):
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pass
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def _write_reg(self, reg, value):
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if reg == _REG_OUTPUT:
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value &= 0xFF
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self._buf[0] = 0x01
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Pin._device.write(self._mv[:1])
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self._buf[0] = value
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# _i2c_device.write_mem(_CH422G_REG_OUT, self._mv[:1])
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Pin._reg_out.write(self._mv[:1])
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self._output = value
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elif reg == _REG_DIRECTION:
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value &= 0xFF
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self._mode = value
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def _read_reg(self, reg):
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if reg == _REG_INPUT:
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# _i2c_device.read_mem(_CH422G_REG_IN, buf=self._mv[:1])
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Pin._reg_in.read(buf=self._mv[:1])
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return self._buf[0]
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elif reg == _REG_OUTPUT:
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return self._output
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elif reg == _REG_DIRECTION:
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return self._mode
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def _set_dir(self, direction):
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if direction == self.OPEN_DRAIN:
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raise ValueError('OPEN_DRAIN is not supported')
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def _set_level(self, level):
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if self._mode == self.OUT:
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if level:
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# 3. High level && Set 0 to output high
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# 4. Low level && Set 0 to output low
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states = Pin._output_states & ~self.__bit
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else:
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# 1. High level && Set 1 to output high
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# 2. Low level && Set 1 to output low
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states = Pin._output_states | self.__bit
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# Write to reg only when different */
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if states != Pin._output_states:
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self._write_reg(_REG_OUTPUT, states)
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Pin._output_states = states
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def _get_level(self):
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if self._mode == self.IN:
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states = ~self._read_reg(_REG_INPUT)
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elif self._mode == self.OUT:
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states = Pin._output_states
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else:
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raise ValueError('Unsupported pin mode')
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return int(bool(states & self.__bit))
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def _set_irq(self, handler, trigger):
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pass
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def _set_pull(self, pull):
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pass

‎api_drivers/common_api_drivers/io_expander/ht8574.py

Lines changed: 0 additions & 66 deletions
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‎api_drivers/common_api_drivers/io_expander/ht8574a.py

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# Copyright (c) 2024 - 2025 Kevin G. Schlosser
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import io_expander_framework
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import machine
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EXIO1 = io_expander_framework.EXIO1
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EXIO2 = io_expander_framework.EXIO2
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EXIO3 = io_expander_framework.EXIO3
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EXIO4 = io_expander_framework.EXIO4
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EXIO5 = io_expander_framework.EXIO5
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EXIO6 = io_expander_framework.EXIO6
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EXIO7 = io_expander_framework.EXIO7
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EXIO8 = io_expander_framework.EXIO8
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# 0x70, 0x72, 0x74, 0x76, 0x78, 0x7A, 0x7C, 0x7E
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I2C_ADDR = 0x70
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BITS = 8
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class Pin(io_expander_framework.Pin):
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_output_states = 0xFF
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_reg_int_pins = []
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@property
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def __bit(self):
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return 1 << self._id
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def __read_reg(self):
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self._buf[0] = 0
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Pin._device.read(buf=self._mv[:1])
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return self._buf[0]
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def __write_reg(self, value):
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self._buf[0] = value & 0xFF
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Pin._device.write(buf=self._mv[:1])
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def _set_dir(self, direction):
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if direction == self.OPEN_DRAIN:
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raise ValueError('OPEN_DRAIN is not supported')
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def _set_level(self, level):
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if self._mode == self.OUT:
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if level:
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states = Pin._output_states | self.__bit
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else:
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states = Pin._output_states & ~self.__bit
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# 0nly set if there is an actual change
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if states != Pin._output_states:
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self.__write_reg(Pin._output_states)
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Pin._output_states = states
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def _get_level(self):
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if self._mode == self.IN:
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states = self.__read_reg()
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elif self.mode == self.OUT:
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states = Pin._output_states
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else:
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raise ValueError('Unsupported pin mode')
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return int(bool(states & self.__bit))
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def _set_irq(self, handler, trigger):
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pass
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def _set_pull(self, pull):
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pass

‎api_drivers/common_api_drivers/io_expander/ht8574b.py

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# Copyright (c) 2024 - 2025 Kevin G. Schlosser
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import io_expander_framework
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EXIO1 = io_expander_framework.EXIO1
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EXIO2 = io_expander_framework.EXIO2
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EXIO3 = io_expander_framework.EXIO3
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EXIO4 = io_expander_framework.EXIO4
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EXIO5 = io_expander_framework.EXIO5
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EXIO6 = io_expander_framework.EXIO6
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EXIO7 = io_expander_framework.EXIO7
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EXIO8 = io_expander_framework.EXIO8
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# 0x40, 0x42, 0x44, 0x46, 0x48, 0x4A, 0x4C, 0x4E
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I2C_ADDR = 0x40
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BITS = 8
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class Pin(io_expander_framework.Pin):
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_output_states = 0xFF
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_reg_int_pins = []
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@property
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def __bit(self):
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return 1 << self._id
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def __read_reg(self):
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self._buf[0] = 0
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Pin._device.read(buf=self._mv[:1])
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return self._buf[0]
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def __write_reg(self, value):
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self._buf[0] = value & 0xFF
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Pin._device.write(buf=self._mv[:1])
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def _set_dir(self, direction):
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if direction == self.OPEN_DRAIN:
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raise ValueError('OPEN_DRAIN is not supported')
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def _set_level(self, level):
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if self._mode == self.OUT:
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if level:
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states = Pin._output_states | self.__bit
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else:
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states = Pin._output_states & ~self.__bit
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# 0nly set if there is an actual change
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if states != Pin._output_states:
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self.__write_reg(Pin._output_states)
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Pin._output_states = states
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def _get_level(self):
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if self._mode == self.IN:
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states = self.__read_reg()
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elif self.mode == self.OUT:
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states = Pin._output_states
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else:
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raise ValueError('Unsupported pin mode')
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return int(bool(states & self.__bit))
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def _set_irq(self, handler, trigger):
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pass
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def _set_pull(self, pull):
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pass

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