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ESPMegaPROv3 Tester/lib/ESPMegaPRO/ESPMegaPRO.cpp

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+#include <ESPMegaPRO.h>
+
+uint8_t inputBufferA;
+uint8_t inputBufferB;
+
+PCF8574 inputBankA(INPUT_BANK_A_ADDRESS);
+PCF8574 inputBankB(INPUT_BANK_B_ADDRESS);
+Adafruit_PWMServoDriver pwmBank = Adafruit_PWMServoDriver(0x5F);
+
+void ESPMega_begin()
+{
+    Wire.begin(14, 33);
+
+    inputBankA.begin();
+    inputBankB.begin();
+    pwmBank.begin();
+
+    #ifdef USE_INTERRUPT
+    attachInterrupt(digitalPinToInterrupt(INPUT_BANK_A_INTERRUPT),refreshInputBankA,FALLING);
+    attachInterrupt(digitalPinToInterrupt(INPUT_BANK_B_INTERRUPT),refreshInputBankB,FALLING);
+    #endif
+}
+
+void ESPMega_loop() {
+    
+}
+
+bool ESPMega_digitalRead(int id)
+{
+    if (id >= 0 && id <= 7)
+    {
+        #ifndef USE_INTERRUPT
+        refreshInputBankA(); //Only poll if interrupt is not enabled
+        #endif
+
+        return ((inputBufferA>>id)&1); //Extract bit from buffer
+    }
+    if (id >= 8 && id <= 15)
+    {
+        id-=8;
+
+        #ifndef USE_INTERRUPT
+        refreshInputBankB(); //Only poll if interrupt is not enabled
+        #endif
+
+        return ((inputBufferB>>id)&1); //Extract bit from buffer
+    }
+    return false;
+}
+
+void ESPMega_analogWrite(int id, int value)
+{
+    pwmBank.setPin(id, value);
+}
+
+void ESPMega_digitalWrite(int id, bool value)
+{
+    if(value)
+        pwmBank.setPin(id, 4095);
+    else
+        pwmBank.setPin(id, 0);
+}
+
+void IRAM_ATTR refreshInputBankA()
+{
+    inputBufferA = inputBankA.read8();
+}
+
+void IRAM_ATTR refreshInputBankB()
+{
+    inputBufferB = inputBankB.read8();
+}

ESPMegaPROv3 Tester/lib/ESPMegaPRO/ESPMegaPRO.h

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+#ifndef ESPMEGA
+#define ESPMEGA
+
+#include <Arduino.h>
+#include <Wire.h>
+#include <Adafruit_PWMServoDriver.h>
+#include <PCF8574.h>
+
+#define INPUT_BANK_A_ADDRESS 0x20
+#define INPUT_BANK_B_ADDRESS 0x21
+#define OUTPUT_BANK_ADDRESS 0x21
+#define EEPROM_ADDRESS 0x22
+
+//#define USE_INTERRUPT
+//#define INPUT_BANK_A_INTERRUPT 35
+//#define INPUT_BANK_B_INTERRUPT 39
+
+/**
+ * Initiate ESPMega PRO Internal Components
+ * 
+ * This function will initiate the PWM bank, Input banks, and the EEPROM.
+*/
+void ESPMega_begin();
+
+/**
+ * Run ESPMega PRO Internal Routines
+ * 
+ * This function must be called regularly for the correct
+ * operation of the ESPMega!
+*/
+void ESPMega_loop();
+
+/**
+ * Read one of the ESPMega's Digital Input pins (I0-I15)
+ * 
+ * @param id The number of the pin to be read
+ * @return The state of the pin (HIGH/LOW)
+*/
+bool ESPMega_digitalRead(int id);
+
+/**
+ * Write a pulse wave modulated signal to one of the ESPMega's
+ * PWM pins (P0-P15)
+ * 
+ * @param id The number of the pin to write to
+ * @param value the "HIGH" duty cycle of the PWM wave (0-4095)
+*/
+void ESPMega_analogWrite(int id, int value);
+
+/**
+ * Write a digital signal to one of the ESPMega's
+ * PWM pins (P0-P15)
+ * 
+ * @param id The number of the pin to write to
+ * @param value the new state for the pin (HIGH/LOW)
+*/
+void ESPMega_digitalWrite(int id, bool value);
+void IRAM_ATTR refreshInputBankA();
+void IRAM_ATTR refreshInputBankB();
+
+#endif