Add serial port support

Author: ianfixes

CHANGELOG.md

@@ -16,6 +16,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Support for WString
 - Support for Print
 - Support for Stream (backed by a String implementation)
+- All the IO stuff (pins, serial port support flags, etc) from the Arduino library
+- Support for Serial (backed by GODMODE)
 
 ### Changed
 - Made `wget` have quieter output

cpp/arduino/Arduino.h

@@ -8,12 +8,12 @@ Where possible, variable names from the Arduino library are used to avoid confli
 // Chars and strings
 
 #include "ArduinoDefines.h"
-#include "Godmode.h"
 
 #include "WCharacter.h"
 #include "WString.h"
 #include "Print.h"
 #include "Stream.h"
+#include "HardwareSerial.h"
 
 typedef bool boolean;
 typedef uint8_t byte;
@@ -23,6 +23,9 @@ typedef uint8_t byte;
 // Math and Trig
 #include "AvrMath.h"
 
+#include "Godmode.h"
+
+
 // Bits and Bytes
 #define bit(b) (1UL << (b))
 #define bitClear(value, bit) ((value) &= ~(1UL << (bit)))

cpp/arduino/ArduinoDefines.h

@@ -86,3 +86,5 @@
 #define TIMER5A 16
 #define TIMER5B 17
 #define TIMER5C 18
+
+#include "include/io.h"

cpp/arduino/Godmode.cpp

@@ -1,4 +1,5 @@
 #include "Godmode.h"
+#include "HardwareSerial.h"
 
 GodmodeState godmode = GodmodeState();
 
@@ -44,3 +45,18 @@ long random(long vmin, long vmax)
 {
   return vmin < vmax ? (random(vmax - vmin) + vmin) : vmin;
 }
+
+// Serial ports
+#if defined(HAVE_HWSERIAL0)
+  HardwareSerial Serial(&godmode.serialPort[0].dataIn, &godmode.serialPort[0].dataOut, &godmode.serialPort[0].readDelayMicros);
+#endif
+#if defined(HAVE_HWSERIAL1)
+  HardwareSerial Serial1(&godmode.serialPort[1].dataIn, &godmode.serialPort[1].dataOut, &godmode.serialPort[1].readDelayMicros);
+#endif
+#if defined(HAVE_HWSERIAL2)
+  HardwareSerial Serial2(&godmode.serialPort[2].dataIn, &godmode.serialPort[2].dataOut, &godmode.serialPort[2].readDelayMicros);
+#endif
+#if defined(HAVE_HWSERIAL3)
+  HardwareSerial Serial3(&godmode.serialPort[3].dataIn, &godmode.serialPort[3].dataOut, &godmode.serialPort[3].readDelayMicros);
+#endif
+

cpp/arduino/Godmode.h

@@ -1,15 +1,36 @@
 #pragma once
 #include "ArduinoDefines.h"
+#include "WString.h"
 
 #define MOCK_PINS_COUNT 256
 
+#if defined(UBRR3H)
+  #define NUM_SERIAL_PORTS 4
+#elif defined(UBRR2H)
+  #define NUM_SERIAL_PORTS 3
+#elif defined(UBRR1H)
+  #define NUM_SERIAL_PORTS 2
+#elif defined(UBRRH) || defined(UBRR0H)
+  #define NUM_SERIAL_PORTS 1
+#else
+  #define NUM_SERIAL_PORTS 0
+#endif
+
+
 class GodmodeState {
+  struct PortDef {
+    String dataIn;
+    String dataOut;
+    unsigned long readDelayMicros;
+  };
+
   public:
     unsigned long micros;
     unsigned long seed;
     // not going to put pinmode here unless its really needed. can't think of why it would be
     bool digitalPin[MOCK_PINS_COUNT];
     int analogPin[MOCK_PINS_COUNT];
+    struct PortDef serialPort[NUM_SERIAL_PORTS];
 
     void resetPins() {
       for (int i = 0; i < MOCK_PINS_COUNT; ++i) {
@@ -30,6 +51,9 @@ class GodmodeState {
 
     GodmodeState() {
       reset();
+      for (int i = 0; i < NUM_SERIAL_PORTS; ++i) {
+        serialPort[i] = {"", "", 0};
+      }
     }
 
 };

cpp/arduino/HardwareSerial.h

@@ -0,0 +1,81 @@
+#pragma once
+
+//#include <inttypes.h>
+#include "Stream.h"
+
+// definitions neeeded for Serial.begin's config arg
+#define SERIAL_5N1 0x00
+#define SERIAL_6N1 0x02
+#define SERIAL_7N1 0x04
+#define SERIAL_8N1 0x06
+#define SERIAL_5N2 0x08
+#define SERIAL_6N2 0x0A
+#define SERIAL_7N2 0x0C
+#define SERIAL_8N2 0x0E
+#define SERIAL_5E1 0x20
+#define SERIAL_6E1 0x22
+#define SERIAL_7E1 0x24
+#define SERIAL_8E1 0x26
+#define SERIAL_5E2 0x28
+#define SERIAL_6E2 0x2A
+#define SERIAL_7E2 0x2C
+#define SERIAL_8E2 0x2E
+#define SERIAL_5O1 0x30
+#define SERIAL_6O1 0x32
+#define SERIAL_7O1 0x34
+#define SERIAL_8O1 0x36
+#define SERIAL_5O2 0x38
+#define SERIAL_6O2 0x3A
+#define SERIAL_7O2 0x3C
+#define SERIAL_8O2 0x3E
+
+class HardwareSerial : public Stream
+{
+  protected:
+    String* mGodmodeDataOut;
+
+  public:
+    HardwareSerial(String* dataIn, String* dataOut, unsigned long* delay): Stream() {
+      mGodmodeDataIn      = dataIn;
+      mGodmodeDataOut     = dataOut;
+      mGodmodeMicrosDelay = delay;
+    }
+    void begin(unsigned long baud) { begin(baud, SERIAL_8N1); }
+    void begin(unsigned long baud, uint8_t config) {
+      *mGodmodeMicrosDelay = 1000000 / baud;
+    }
+    void end() {}
+
+    // virtual int available(void);
+    // virtual int peek(void);
+    // virtual int read(void);
+    // virtual int availableForWrite(void);
+    // virtual void flush(void);
+    virtual size_t write(uint8_t aChar) { mGodmodeDataOut->append(String((char)aChar)); return 1; }
+
+    inline size_t write(unsigned long n) { return write((uint8_t)n); }
+    inline size_t write(long n) { return write((uint8_t)n); }
+    inline size_t write(unsigned int n) { return write((uint8_t)n); }
+    inline size_t write(int n) { return write((uint8_t)n); }
+    // using Print::write; // pull in write(str) and write(buf, size) from Print
+    operator bool() { return true; }
+
+};
+
+#if defined(UBRRH) || defined(UBRR0H)
+  extern HardwareSerial Serial;
+  #define HAVE_HWSERIAL0
+#endif
+#if defined(UBRR1H)
+  extern HardwareSerial Serial1;
+  #define HAVE_HWSERIAL1
+#endif
+#if defined(UBRR2H)
+  extern HardwareSerial Serial2;
+  #define HAVE_HWSERIAL2
+#endif
+#if defined(UBRR3H)
+  extern HardwareSerial Serial3;
+  #define HAVE_HWSERIAL3
+#endif
+

cpp/arduino/Stream.h

@@ -48,7 +48,10 @@ class Stream : public Print
     virtual int peek() { return available() ? (int)((*mGodmodeDataIn)[0]) : -1; }
     virtual int read() {
       int ret = peek();
-      if (ret != -1) fastforward(1);
+      if (ret != -1) {
+        fastforward(1);
+        if (mGodmodeMicrosDelay) delayMicroseconds(*mGodmodeMicrosDelay);
+      }
       return ret;
     }
 
@@ -152,6 +155,7 @@ class Stream : public Print
     // returns the number of characters placed in the buffer (0 means no valid data found)
     size_t readBytes(char *buffer, size_t length) {
       size_t ret = mGodmodeDataIn->copy(buffer, length);
+      if (mGodmodeMicrosDelay) delayMicroseconds(*mGodmodeMicrosDelay * ret);
       fastforward(ret);
       return ret;
     }

cpp/arduino/include/README.md

@@ -0,0 +1,3 @@
+IO defintions.
+
+All of it copied from `arduino-1.8.5/hardware/tools/avr/avr/include/avr`