/*
* humidity.cpp
 *
 *  Created on: 2014/06/05
 *      Author: sunaga
 */


#include "I2C.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/ioctl.h>

int InitTextLcd(CI2C* pI2c)
{
	pI2c->Set8bits(0x50, 0x00, 0x00);//clear display
	usleep(100000);
	pI2c->Set8bits(0x50, 0x00, 0x38);//function set: 8bit, 2line
	usleep(100000);
	pI2c->Set8bits(0x50, 0x00, 0x0c);//display on, no cursor
	usleep(100000);
	pI2c->Set8bits(0x50, 0x00, 0x06);//direction=INC, no shift
	usleep(100000);

	return 0;
}

//秋月電子ーーキャラクタLCDモジュール(ACM1602NI-FLW-FBW-M01)
//100kHzでは動きません。50kHzで動作しました。
//i2cgetdevice　をやると固まります
//これを使うときはi2cgetdeviceをやらないでください
int SetTextLcd(CI2C* pI2c, char* lpszText)
{
	int i;

	int len = strlen(lpszText);
	for(i = 0; i < len; i++)
	{
		pI2c->Set8bits(0x50, 0x80, *lpszText);
		lpszText++;
	}
	return 0;
}

void DrawTemparature(CI2C* pI2c)
{
	i2cVal val;
	char buf[128];
	double temp1, temp2;

	pI2c->Set8bits(0x50, 0x00, 0x80);//clear display
	usleep(1000);

	val = pI2c->Get16bits(0x48, 0);
	//13bits
	int data =  ((val.val << 8) & 0xff00) + (val.val >> 8);
	if((data & 0x8000) == 0)
	{
		data = data >> 3;
		temp1 = (double)data / 16.0;
	}
	else
	{
		data = data >> 3;
		temp1 = ((double)data - 8192.0) / 16.0;
	}
	//temp = ((double)data / 8.0) * 0.0625;
	pI2c->Set8bits(0x39, 0x03, 0x0c);//12bits resolutuon
	val = pI2c->Get8bits(0x39, 0x00);
	temp2 = val.val;
	val = pI2c->Get8bits(0x39, 0x02);
	val.val >>= 4;
	temp2 += (val.val * 0.0625);

	sprintf(buf, "%.1f %cC %.1f %cC", temp1, 0xdf,  temp2, 0xdf);
	SetTextLcd(pI2c, buf);
	printf(buf);
	printf("\n");

}

#define AM2321_ADDR (0xB8 >> 1)

int DrawHumidity(CI2C* pI2c)
{
	int ret;
	char data[32], buf[128];

	pI2c->Set8bits(0x50, 0x00, 0x80);//clear display
	usleep(1000);

	  // wakeup  AM2321
	if(pI2c->wakeUp(AM2321_ADDR, 5) == -1)
	{
		return -1;
	}
	 usleep(3000);
	  //* write request humidity and temporature
	  data[0] = 0x03;//command
	  data[1] = 0x00;//top address
	  data[2] = 0x04;//size
	  if(pI2c->Write(AM2321_ADDR, data, 3) == -1)
	  {
			return -1;
	  }
	  //* wait for activate
	  usleep( 1500 );

	  //* read measured result
	  if(pI2c->Read(AM2321_ADDR, data, 8 ) == -1)
	  if ( ret < 0 )
	  {
		  return -1;
	  }
	  double hu = (data[2]*256.0 + data[3]) / 10.0;
	  double tm = (data[4]*256.0 + data[5]) / 10.0;
	  sprintf(buf, "%.1f%cC %.1f%%", tm, 0xdf,  hu);
	  SetTextLcd(pI2c, buf);
	  printf(buf);
	  printf("\n");
	  return  0;

}





void DrawPressure(CI2C* pI2c)
{
	i2cVal val;
	char buf[128];
	int l,m, h;

	pI2c->Set8bits(0x50, 0x00, 0xc0);

	val  = pI2c->Get8bits(0x5d, 0x28);
	if(val.enable == false)
	{
		printf("error\n");
		return;
	}
	l = val.val;
	val  = pI2c->Get8bits(0x5d, 0x29);
	m = val.val;
	val  = pI2c->Get8bits(0x5d, 0x2a);
	h = val.val;

	int data =  (h << 16) + (m << 8) + l;
	int p = data / 4096;

	val  = pI2c->Get8bits(0x5d, 0x2b);
	l = val.val;
	val  = pI2c->Get8bits(0x5d, 0x2c);
	h = val.val;
	short t = (short)((h << 8) + l);
	double temp = t / 480.0 + 42.5;
	sprintf(buf, "%.1f%cC %dhPa", temp, 0xdf, p );
	SetTextLcd(pI2c, buf);
	printf(buf);
	printf("\n");
}



int main()
{
	int i;
	i2cVal val;
	char buf[128];

	CI2C i2c( "/dev/i2c-1");
	int br = i2c.GetBaudrate();
	i2c.SetBaudrate(50000);
	br = i2c.GetBaudrate();

	InitTextLcd(&i2c);
	i2c.Set8bits(0x5d, 0x20, 0x90);
//	for(i = 0; i < 100; i++)
	while(1)
	{
//		DrawTemparature(&i2c);
		DrawHumidity(&i2c);
		DrawPressure(&i2c);
		sleep(2);
	}

	return 0;
}