ix03.h

#pragma once

// #include <Arduino.h>
// #include <Wire.h>
#include <inttypes.h>
#include "pxt.h"
// #ifdef ESP32 | ESP8266
// #include <stdlib_noniso.h>
// #else
// #include <avr/dtostrf.h>
// #endif

#define SC16IS740_RHR 0x00
#define SC16IS740_THR 0x00
#define SC16IS740_IER 0x01
#define SC16IS740_FCR 0x02
#define SC16IS740_IIR 0x02
#define SC16IS740_LCR 0x03
#define SC16IS740_MCR 0x04
#define SC16IS740_LSR 0x05
#define SC16IS740_MSR 0x06
#define SC16IS740_SPR 0x07
#define SC16IS740_TCR 0x06
#define SC16IS740_TLR 0x07
#define SC16IS740_TXLVL 0x08
#define SC16IS740_RXLVL 0x09
#define SC16IS740_IODIR 0x0A
#define SC16IS740_IOSTATE 0x0B
#define SC16IS740_IOINTENA 0x0C
#define SC16IS740_RESERVED 0x0D
#define SC16IS740_IOCONTROL 0x0E
#define SC16IS740_EFCR 0x0F
#define SC16IS740_DLL 0x00
#define SC16IS740_DLH 0x01
#define SC16IS740_EFR 0x02
#define SC16IS740_XON1 0x04
#define SC16IS740_XON2 0x05
#define SC16IS740_XOFF1 0x06
#define SC16IS740_XOFF2 0x07

#define SC16IS740_I2C_ADDR 0x4D

#define DEC 1
#define OUTPUT 1
#define HIGH 1

class xIX03
{
public:
    xIX03();
    xIX03(uint8_t addr);
    bool begin(uint16_t baudRate);
    uint8_t available();
    uint8_t availableForWrite();
    void end();
    void flush();
    void config();
    uint8_t read();

    void pinMode(uint8_t pin, uint8_t mode);
    void digitalWrite(uint8_t pin, uint8_t state);
    bool digitalRead(uint8_t pin);

    void write(uint8_t);
    void write(const char *str);
    void write(const uint8_t *buffer, uint8_t size);
    void write(const char *buffer, uint8_t size);

private:
    bool readLSR();
    void setBaudRate(uint16_t baudRate);
    void resetDevice();
    bool ping();
    void FIFOEnable(uint8_t fifo_enable);
    uint8_t i2cAddr;
    void writeByte(uint8_t reg, uint8_t val);
    uint8_t readByte(uint8_t reg);
    void writeBlock(uint8_t reg, uint8_t *val, uint8_t len);
};