iotec_MAX7319

With the iotec_MAX7319 library you are able to read the IO and its transition states from the MAX7319.

Usage

Here is an example on how to use the library and reading the port and transition states each second.

#include "iotec_MAX7319.h"

// Create instance
iotec_MAX7319 inputs(0x68); // AD0 & AD2 to gnd
uint32_t now = 0;
uint16_t lastSend = 0;
 
void setup() {
    // Init serial interface for debugging
    Serial.begin(115200);
    delay(100);
    Serial.println("This is iotec_MAX7319 lib!")

    // Init I2C interface
    inputs.begin();
}

void loop() {
    // update millis
    now = millis();

    // Run into each sekond
    if (now - lastSend > 1000) {
        // reset last send var
        lastSend = now;

        // read whole port and corresponding flag
        if (inputs.read(&ports, &flags)) {
            // print port and flag state
            Serial.print("Port: ");
            Serial.print(ports);
            Serial.print("; Flags: ");
            Serial.println(flags);
        } else {
            Serial.println("Read failed!");
        }
    }
}

Repository Contents

• /example – example sketch for the library
• /src – source files for the library (.cpp, .h)

Features

• Read IO port state
• Read IO port transition state

The input states returned via an uint8_t parameter of the read-funtion where the MSB matches the I7 and the LSB the I0 input. The transition states also returned via an uint8_t parameter of the read-funtion where the MSB matches the F7 and the LSB the F0. The flags will be resetted after reading.

Contribute

We look forward to contributions, reports or comments on the library.

If you have any question feel free to contact us: info@iotec-gmbh.de

License

See LICENSE file for more information.

Copyright (c) 2021 iotec GmbH