pca9570_expander.ino

Go to the documentation of this file.

 
#include <IoExpanderDrv.hpp>
 
#ifndef SENSOR_SDA
#define SENSOR_SDA  17
#endif
 
#ifndef SENSOR_SCL
#define SENSOR_SCL  18
#endif
 
IoExpanderPCA9570 expander;
 
void setup()
{
    Serial.begin(115200);
 
    if (!expander.begin(Wire, PCA9570_SLAVE_ADDRESS, SENSOR_SDA, SENSOR_SCL)) {
        while (1) {
            Serial.println("Failed to find PCA9570 - check your wiring!");
            delay(1000);
        }
    }
 
    // Since PCA9570 pins are fixed as outputs, this call merely updates the software pin mode
    // cache and does not perform any actual hardware configuration.
    expander.configPins(IoExpanderPCA9570::PORT_ALL, OUTPUT);
}
 
void loop()
{
    // Set all pins to 1
    Serial.println("Set port HIGH");
    expander.digitalWritePort(0x0F, HIGH);
    delay(1000);
 
    Serial.println("Set port LOW");
    // Set all pins to 0
    expander.digitalWritePort(0x00, LOW);
    delay(1000);
 
    Serial.println("digitalWrite 0");
    expander.digitalWrite(0, HIGH);
    delay(1000);
 
    Serial.println("digitalToggle 0");
    expander.digitalToggle(0);
    delay(1000);
}