MCP23Sxx series SPI GPIO Expander

Supported interfaces

• webiopi.devices.digital.GPIOPort

Python Constructor

Use following constructors if you want to create some MCP230xx from your Python scripts.

• MCP23S08(chip, slave)
• MCP23S09(chip, slave)
• MCP23S17(chip, slave)
• MCP23S18(chip, slave)

Parameters :

• chip (optional, default=0): SPI Chip Enable number (0=CE0, 1=CE1)
• slave (optional, default=0x20): MCP23Sxx slave address

from webiopi.devices.digital import MC23S17

# Setup a MC23S17 on SPI CE0 with slave address 0x20 (default)
mcp0 = MC23S17()
# or
mcp0 = MC23S17(chip=0, slave=0x20)

# Setup a MCP3008 on SPI CE0 with slave address 0x21
mcp1 = MC23S17(chip=0, slave=0x21)

Configuration File syntax

Use following syntax to setup some MCP3000 in the webiopi service/command configuration file.

[DEVICES]
# Setup a MC23S17 on SPI CE0 with slave address 0x20 (default)
mcp0 = MC23S17
# or
mcp0 = MC23S17 chip:0 slave:0x20

# Setup a MCP3008 on SPI CE0 with slave address 0x21
mcp1 = MC23S17 chip:0 slave:0x21