128 lines
3.6 KiB
C++
128 lines
3.6 KiB
C++
/**
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*
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* @license MIT License
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*
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* Copyright (c) 2024 lewis he
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* @file XL9555_ioEvent.ino
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* @author Lewis He (lewishe@outlook.com)
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* @date 2024-09-14
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*
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*/
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#include <Arduino.h>
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#include "ExtensionIOXL9555.hpp"
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#ifndef SENSOR_SDA
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#define SENSOR_SDA 17
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#endif
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#ifndef SENSOR_SCL
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#define SENSOR_SCL 18
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#endif
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#ifndef SENSOR_IRQ
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#define SENSOR_IRQ 10
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#endif
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ExtensionIOXL9555 io;
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void gpio5_event_cb(void *user_data)
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{
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Serial.println((const char *)user_data);
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}
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void gpio7_event_cb(void *user_data)
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{
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Serial.println((const char *)user_data);
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}
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void setup()
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{
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Serial.begin(115200);
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// Set the interrupt input to input pull-up
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pinMode(SENSOR_IRQ, INPUT_PULLUP);
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/*
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*
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* If the device address is not known, the 0xFF parameter can be passed in.
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*
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* XL9555_UNKOWN_ADDRESS = 0xFF
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*
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* If the device address is known, the device address is given
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*
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* XL9555_SLAVE_ADDRESS0 = 0x20
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* XL9555_SLAVE_ADDRESS1 = 0x21
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* XL9555_SLAVE_ADDRESS2 = 0x22
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* XL9555_SLAVE_ADDRESS3 = 0x23
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* XL9555_SLAVE_ADDRESS4 = 0x24
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* XL9555_SLAVE_ADDRESS5 = 0x25
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* XL9555_SLAVE_ADDRESS6 = 0x26
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* XL9555_SLAVE_ADDRESS7 = 0x27
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*/
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const uint8_t chip_address = XL9555_UNKOWN_ADDRESS;
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if (!io.begin(Wire, chip_address, SENSOR_SDA, SENSOR_SCL)) {
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while (1) {
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Serial.println("Failed to find XL9555 - check your wiring!");
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delay(1000);
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}
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}
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/*
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* Note:
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* XL9555 has an internal pull-up resistor and maintains a high level when idle.
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* XL9535 has a floating input internally and an uncertain state when idle, requiring an external pull-up/pull-down resistor
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* * */
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// Set PORT0 as input,mask = 0xFF = all pin input
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io.configPort(ExtensionIOXL9555::PORT0, 0xFF);
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// Set PORT1 as input,mask = 0xFF = all pin input
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io.configPort(ExtensionIOXL9555::PORT1, 0xFF);
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// Passing in user parameters
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static const char *gpio5_data = "GPIO 5 SET HIGH TRIGGER";
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static const char *gpio7_data = "GPIO 7 SET LOW TRIGGER";
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// Set GPIO5 high level to trigger callback event
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io.setPinEvent(5, HIGH, gpio7_event_cb, (void *)gpio5_data);
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// Set GPIO7 low level to trigger callback event
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io.setPinEvent(7, LOW, gpio7_event_cb, (void *)gpio7_data);
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// Remove gpio 5 callback event
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// io.removePinEvent(5);
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}
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void loop()
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{
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// Refresh registers when an interrupt comes
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if (digitalRead(SENSOR_IRQ) == LOW) {
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io.update();
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}
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}
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