Skip to content

fantasticdonkey/uFT6336U

Folders and files

NameName
Last commit message
Last commit date

Latest commit

 

History

14 Commits
 
 
 
 
 
 

Repository files navigation

MicroPython I2C driver for the Focus LCDs FT6336U capacitive touch panel controller IC.

image

Basic usage

The driver simply requires a MicroPython I2C object to be instantiated. Refer to your development board's schematics to establish the correct I2C pins.

from machine import I2C, Pin

I2C_SDA_PIN = const(21)
I2C_SCL_PIN = const(22)
I2C_FREQ = const(400000)
i2c_bus = I2C(sda=Pin(I2C_SDA_PIN), scl=Pin(I2C_SCL_PIN), freq=I2C_FREQ)

The FT6336U driver can then be instantiated using the I2C object. For the simplest operation, use the touch.get_positions() method to return the X and Y coordinates of the registered point(s). This will return a maximum of two points. If the device cannot be found, make sure that the IC is powered (for example, if it is connected to a separate power management chip).

import uFT6336U
touch = uFT6336U.FT6336U(i2c_bus)

touch.get_positions()

image

Use with interrupt

For best results, use the driver with the designated interrupt pin. This way, discreet code can be triggered based on newly registered points.

INTERRUPT_PIN = const(39)

def handle_interrupt(pin):
    num_points = touch.get_points()
    if num_points > 0:
        print(touch.get_p1_x(), touch.get_p1_y())
    if num_points == 2:
        print(touch.get_p2_x(), touch.get_p2_y())

pir = Pin(INTERRUPT_PIN, Pin.IN)

pir.irq(trigger=Pin.IRQ_RISING, handler=handle_interrupt)

image

Further reading

About

MicroPython I2C driver for the Focus LCDs FT6336U capacitive touch panel controller IC.

Resources

Stars

Watchers

Forks

Packages

No packages published

Languages