Struct pcf8591::PCF8591

pub struct PCF8591 { /* fields omitted */ }

A struct to handle PCF8591 converter

Allow user to read from given input pin and write to output pin

Methods

impl PCF8591

fn new<P: AsRef<Path>>(path: P, address: u16, v_ref: f64) -> Result<PCF8591>

Creates a new connection given i2c path and address

• path: device slave path (0x48 per default)
• address: has to be defined as per Table 5.
• v_ref: is the board voltage (e.g. typically 3.3V on raspberry pi)

fn analog_read_byte(&mut self, pin: Pin) -> Result<u8>

Reads analog values out of input pin and output digital byte

The conversion with board voltage is left to the user. For automatic conversion, use analog_read

fn analog_read(&mut self, pin: Pin) -> Result<f64>

Reads analog values out of input pin and output corresponding input voltage

Returns analog_read_byte * v_ref / 255 (suppose Vagnd == 0)

fn analog_write_byte(&mut self, value: u8) -> Result<()>

Writes analog values, as byte, in the output pin

The conversion with board voltage is left to the user For automatic conversion, use analog_write

fn analog_write(&mut self, v_out: f64) -> Result<()>

Writes analog values in the output pin