initial commit

2025-03-21 09:59:09 +01:00
parent 59637f4fa8
commit f690d03c57
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+/**
+ *
+ * @license MIT License
+ *
+ * Copyright (c) 2024 lewis he
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * @file      XL9555_ExtensionIOInterrupt.ino
+ * @author    Lewis He (lewishe@outlook.com)
+ * @date      2024-09-14
+ *
+ */
+#include <Arduino.h>
+#include "ExtensionIOXL9555.hpp"
+
+#ifndef SENSOR_SDA
+#define SENSOR_SDA  17
+#endif
+
+#ifndef SENSOR_SCL
+#define SENSOR_SCL  18
+#endif
+
+#ifndef SENSOR_IRQ
+#define SENSOR_IRQ  10
+#endif
+
+ExtensionIOXL9555 io;
+
+void printBinary(uint8_t port, uint32_t num, int bits, bool new_line = false)
+{
+
+    Serial.print("Port");
+    Serial.print(port);
+    Serial.print(":");
+
+    char binary[17];
+    int i = bits - 1;
+    binary[bits] = '\0';
+    for (int j = 0; j < bits; j++) {
+        binary[j] = '0';
+    }
+    for (; i >= 0; i--) {
+        binary[i] = (num & 1) + '0';
+        num >>= 1;
+    }
+
+    Serial.print(binary);
+    if (new_line) {
+        Serial.println();
+    } else {
+        Serial.print("\t");
+    }
+}
+
+
+void setup()
+{
+    Serial.begin(115200);
+
+    // Set the interrupt input to input pull-up
+    pinMode(SENSOR_IRQ, INPUT_PULLUP);
+
+    /*
+    *
+    *    If the device address is not known, the 0xFF parameter can be passed in.
+    *
+    *    XL9555_UNKOWN_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_UNKOWN_ADDRESS;
+
+    if (!io.begin(Wire, chip_address, SENSOR_SDA, SENSOR_SCL)) {
+        while (1) {
+            Serial.println("Failed to find XL9555 - check your wiring!");
+            delay(1000);
+        }
+    }
+
+    /*
+    * Note:
+    *   XL9555 has an internal pull-up resistor and maintains a high level when idle.
+    *   XL9535 has a floating input internally and an uncertain state when idle, requiring an external pull-up/pull-down resistor
+    * * */
+
+    // Set PORT0 as input,mask = 0xFF = all pin input
+    io.configPort(ExtensionIOXL9555::PORT0, 0xFF);
+
+    // Set PORT1 as input,mask = 0xFF = all pin input
+    io.configPort(ExtensionIOXL9555::PORT1, 0xFF);
+
+
+}
+
+void loop()
+{
+    // When the interrupt occurs, we read the mask value of PORT
+    if (digitalRead(SENSOR_IRQ) == LOW) {
+
+        // Read 8-bit port 0 input status
+        int val = io.readPort(0);
+
+        // Read 8-bit port 1 input status
+        int val1 = io.readPort(1);
+
+        printBinary(1, val1, 8);
+        printBinary(0, val, 8);
+
+        // Read 16-bit gpio input status
+        uint16_t all_val = io.read();
+        printBinary(3, all_val, 16, true);
+
+        int i = 15;
+        for (; i >= 0; i--) {
+            if (!(all_val & 1)) {
+                Serial.print("GPIO: ");
+                Serial.print(15 - i);
+                Serial.println(" is low");
+            }
+            all_val >>= 1;
+        }
+    }
+}
+