/*
 * main.cpp
 *
 *  Created on: 2014/05/29
 *      Author: sunaga
 */

#include "I2C.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.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");

}


void DrawPressure(CI2C* pI2c)
{
	i2cVal val;
	char buf[128];

	pI2c->Set8bits(0x50, 0x00, 0xc0);
	val  = pI2c->Get8bits(0x5d, 0x28);
	if(val.enable == false)
	{
		printf("error\n");
		return;
	}
	int l = val.val;
	val  = pI2c->Get8bits(0x5d, 0x29);
	int m = val.val;
	val  = pI2c->Get8bits(0x5d, 0x2a);
	int h = val.val;

	int data =  (h << 16) + (m << 8) + l;
	int p = data / 4096;
	sprintf(buf, "%d hPa", p );
	SetTextLcd(pI2c, buf);
	printf(buf);
	printf("\n");

	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", temp, 0xdf );
	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++)
	{
		DrawTemparature(&i2c);
		DrawPressure(&i2c);
		sleep(1);
	}

	return 0;
}