gpio_ext_pcal_t Struct Reference

#include <gpio-ext-pcal9535a.h>

Collaboration diagram for gpio_ext_pcal_t:

Data Fields
const struct i2c_t *	I2c
	I2C port I2C0 or I2C1.
struct gpio_ext_pcal_state_t *	State
	IO expander run-time state.
uint8_t	SlaveAddress
	I2C slave address 0x20 to 0x27.
uint8_t	Reserved
	Reserved and not used.
uint16_t	OutInit
	Initialize value for output port pins (0 = low output, 1 = high output)
uint16_t	InInvert
	Invertion of inputs port pins (0 = no invert, 1 = invert)
uint16_t	Direction
	Sets the direction of port pins (0 = output, 1 = input)
uint16_t	PullEnable
	Enables pull resistors for port pins (0 = disable, 1 = enable)
uint16_t	PullSelect
	Selects pullup or polldown resistors port pins (0 = 100k pulldown, 1 = 100k pullup)

Detailed Description

io_expander_t structure holds I2C port and slave address to be used, and the initial data for the ports.

Definition at line 80 of file gpio-ext-pcal9535a.h.