Crate tm040040 

An embedded-hal driver for the TM040040 Pinnacle touch pads from Cirque.

The Pinnacle touch pad supports X and Y axis movement, tap detection and other features. Note that while the touch pad supports both I²C and SPI, only I²C is supported in this driver. For I²C to be active, the R1 resistor needs to be removed from the touch pad, if there is one. This was only tested with the TM040040 touch pad,but should work with all Pinnacle touch pads. This library only supports the non-AG (Advanced Gestures) version of Pinnacle touch pads.

For additional information, please consult the datasheet as well as the Pinnacle ASIC documentation.

Example

use esp_idf_hal::{
    i2c::{I2cConfig, I2cDriver},
    peripherals::Peripherals,
};
use anyhow::Result;

use tm040040::{Address, FeedMode, Tm040040, XYInverted};
fn main() -> Result<()> {
    esp_idf_svc::sys::link_patches();
    let peripherals = Peripherals::take().unwrap();

    let sda = peripherals.pins.gpio10;
    let scl = peripherals.pins.gpio8;
    let config = I2cConfig::new().baudrate(400.kHz().into());
    let i2c = I2cDriver::new(peripherals.i2c0, sda, scl, &config)?;
    let mut trackpad = Tm040040::new(i2c, Address::Primary).enable().unwrap();
    let pad_data = trackpad.relative_data().unwrap();
    if let Some(touch_data) = pad_data {
        // the above is only `Some` if the pad is currently touched, otherwise it's `None`.
        // Do something with the touch data
    }
}

Structs

Absolute

AbsoluteData

Position and button data in absolute mode

FeedEnabled

NoFeed

Relative

RelativeData

Position and button data in relative mode

Tm040040

Enums

Address

i2c adress

Error

FeedMode

Feed mode controls if position reporting is turned on or not.

FilterMode

Enable or disable hardware filters. Cirque does not reccommend disabling filters.

GlideExtendMode

Control glide extend mode. In glide extend mode, drag actions can be extended by lifting the finger when an edge is reached and repositioning the finger.

IntelliMouseMode

Intelli mouse mode controlls scroll reporting.

PositionMode

Position reporting mode

PowerMode

Touchpad power modes

ScrollMode

Control scroll mode. Cirque docs don’t say what this actually does.

TapMode

Handle what types of taps are detected by hardware.

XYEnable

Disable specific axis.

XYInverted

Invert axis reporting (flips sign).

XYSwapped

Swap X and Y axis.

Traits

FeedState

PositionReportingMode