xl9555_write.ino

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#include <IoExpanderDrv.hpp>
 
#ifndef SENSOR_SDA
#define SENSOR_SDA  17
#endif
 
#ifndef SENSOR_SCL
#define SENSOR_SCL  18
#endif
 
IoExpanderXL9555 expander;
 
void setup()
{
    Serial.begin(115200);
 
    /*
    *
    *    If the device address is not known, the 0xFF parameter can be passed in.
    *
    *    XL9555_UNKNOWN_ADDRESS  = 0xFF
    *
    *    If the device address is known, the device address is given
    *
    *    XL9555_SLAVE_ADDRESS0  = 0x20
    *    XL9555_SLAVE_ADDRESS1  = 0x21
    *    XL9555_SLAVE_ADDRESS2  = 0x22
    *    XL9555_SLAVE_ADDRESS3  = 0x23
    *    XL9555_SLAVE_ADDRESS4  = 0x24
    *    XL9555_SLAVE_ADDRESS5  = 0x25
    *    XL9555_SLAVE_ADDRESS6  = 0x26
    *    XL9555_SLAVE_ADDRESS7  = 0x27
    */
    const uint8_t chip_address = XL9555_UNKNOWN_ADDRESS;
 
    if (!expander.begin(Wire, chip_address, SENSOR_SDA, SENSOR_SCL)) {
        while (1) {
            Serial.println("Failed to find XL9555 - check your wiring!");
            delay(1000);
        }
    }
 
    // Set PORT0 as output
    expander.configPins(IoExpanderXL9555::PORT_ALL, OUTPUT);
}
 
void loop()
{
    // Set all PORTs to 1, and the parameters here are mask values, corresponding to the 0~15 bits
    Serial.println("Set port HIGH");
    expander.digitalWritePort(0xFFFF, HIGH);
    delay(1000);
 
    Serial.println("Set port LOW");
    // Set all PORTs to 0, and the parameters here are mask values, corresponding to the 0~15 bits
    expander.digitalWritePort(0x0000, LOW);
    delay(1000);
 
    Serial.println("digitalWrite");
    expander.digitalWrite(0, HIGH);
    delay(1000);
 
    Serial.println("digitalToggle");
    expander.digitalToggle(0);
    delay(1000);
 
 
}