knobtviker/fram

Fujitsu MB85RC256V driver for Android Things

This driver supports Fujitsu MB85RC256V I2C FRAM.

It's based on Arduino library for I2C FRAM and will eventually support all devices listed there.

Ferroelectric RAM (FeRAM, F-RAM or FRAM) is a random-access memory similar in construction to DRAM but using a ferroelectric layer instead of a dielectric layer to achieve non-volatility.

How to use the driver

Gradle dependency

To use the fram driver, simply add the line below to your project's build.gradle, where <version> matches the last version of the driver available on jcenter .

dependencies {
    implementation 'com.knobtviker.android.things.contrib.community.driver:fram:<version>'
}

Sample usage

import com.knobtviker.android.things.contrib.community.driver.fram.Mb85rc256v;

// Access the FRAM device:

Mb85rc256v fram;

try {
    //default constructor with default write protection pin and status
    fram = new Mb85rc256v(i2cBusName);
} catch (IOException e) {
    // couldn't configure the device...
}

// Reads one byte from the specified FRAM address
try {
    final byte valueToRead = fram.readByte(0);
} catch (IOException e) {
    // error reading value from address
}

// Write one byte from the specified FRAM address
try {
    final byte valueToWrite = 111;
    fram.writeByte(0, valueToWrite);
} catch (IOException e) {
    // error writing value to address
}

// Close the FRAM device when finished:

try {
    fram.close();
} catch (IOException e) {
    // error closing device
}