/**
 * Marlin 3D Printer Firmware
 *
 * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
 * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
 * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

/**
 * HAL_LPC1768/HAL.h
 * Hardware Abstraction Layer for NXP LPC1768
 */

#ifndef _HAL_LPC1768_H_
#define _HAL_LPC1768_H_

#define CPU_32_BIT

// --------------------------------------------------------------------------
// Includes
// --------------------------------------------------------------------------

#include <stdint.h>
#include <stdarg.h>

#undef min
#undef max

#include <algorithm>

void _printf (const  char *format, ...);
void _putc(uint8_t c);
uint8_t _getc();

extern "C" volatile uint32_t _millis;

//arduino: Print.h
#define DEC 10
#define HEX 16
#define OCT 8
#define BIN 2
//arduino: binary.h (weird defines)
#define B01 1
#define B10 2

#include <Arduino.h>
#include <pinmapping.h>

#include "../shared/math_32bit.h"
#include "../shared/HAL_SPI.h"
#include "fastio.h"
#include "watchdog.h"
#include "serial.h"
#include "HAL_timers.h"
#include "HardwareSerial.h"

#ifndef ST7920_DELAY_1
  #define ST7920_DELAY_1 DELAY_NS(600)
#endif
#ifndef ST7920_DELAY_2
  #define ST7920_DELAY_2 DELAY_NS(750)
#endif
#ifndef ST7920_DELAY_3
  #define ST7920_DELAY_3 DELAY_NS(750)
#endif

extern HalSerial usb_serial;

#if !WITHIN(SERIAL_PORT, -1, 3)
  #error "SERIAL_PORT must be from -1 to 3"
#endif

#if SERIAL_PORT == -1
  #define MYSERIAL0 usb_serial
#elif SERIAL_PORT == 0
  extern HardwareSerial Serial;
  #define MYSERIAL0 Serial
#elif SERIAL_PORT == 1
  extern HardwareSerial Serial1;
  #define MYSERIAL0 Serial1
#elif SERIAL_PORT == 2
  extern HardwareSerial Serial2;
  #define MYSERIAL0 Serial2
#elif SERIAL_PORT == 3
  #define MYSERIAL0 Serial3
  extern HardwareSerial Serial3;
#endif

#ifdef SERIAL_PORT_2
  #if !WITHIN(SERIAL_PORT_2, -1, 3)
    #error "SERIAL_PORT_2 must be from -1 to 3"
  #elif SERIAL_PORT_2 == SERIAL_PORT
    #error "SERIAL_PORT_2 must be different than SERIAL_PORT"
  #endif
  #define NUM_SERIAL 2
  #if SERIAL_PORT_2 == -1
    #define MYSERIAL1 usb_serial
  #elif SERIAL_PORT_2 == 0
    extern HardwareSerial Serial;
    #define MYSERIAL1 Serial
  #elif SERIAL_PORT_2 == 1
    extern HardwareSerial Serial1;
    #define MYSERIAL1 Serial1
  #elif SERIAL_PORT_2 == 2
    extern HardwareSerial Serial2;
    #define MYSERIAL1 Serial2
  #elif SERIAL_PORT_2 == 3
    extern HardwareSerial Serial3;
    #define MYSERIAL1 Serial3
  #endif
#else
  #define NUM_SERIAL 1
#endif

#define CRITICAL_SECTION_START  uint32_t primask = __get_PRIMASK(); __disable_irq()
#define CRITICAL_SECTION_END    if (!primask) __enable_irq()
#define ISRS_ENABLED() (!__get_PRIMASK())
#define ENABLE_ISRS()  __enable_irq()
#define DISABLE_ISRS() __disable_irq()

//Utility functions
int freeMemory(void);

// SPI: Extended functions which take a channel number (hardware SPI only)
/** Write single byte to specified SPI channel */
void spiSend(uint32_t chan, byte b);
/** Write buffer to specified SPI channel */
void spiSend(uint32_t chan, const uint8_t* buf, size_t n);
/** Read single byte from specified SPI channel */
uint8_t spiRec(uint32_t chan);

// ADC
#define HAL_ANALOG_SELECT(pin) HAL_adc_enable_channel(pin)
#define HAL_START_ADC(pin)     HAL_adc_start_conversion(pin)
#define HAL_READ_ADC()         HAL_adc_get_result()
#define HAL_ADC_READY()        HAL_adc_finished()

void HAL_adc_init(void);
void HAL_adc_enable_channel(int pin);
void HAL_adc_start_conversion(const uint8_t adc_pin);
uint16_t HAL_adc_get_result(void);
bool HAL_adc_finished(void);

#endif // _HAL_LPC1768_H_