/*
 * Copyright (c) 2015-2016 Infineon Technologies AG
 *
 * Driver for Infineon DPS310 Digital Barometric Pressure Sensor
 *
 *
 */
#include <stdio.h>
#include <stdlib.h>
#include "dps310.h"
#include "main.h"
#include "lis3dh_driver.h"
/*bus communication protocol stubs
* Please wrap around platform specific implementation
* for low level bus handling (I2C or SPI), that matches 
* prototypes provided by dps310_bus_connection structure
* in dps310.h
*/
void delay_us(uint32_t nTimer);
/* Should return -1 in case of failure otherwise valid contents*/
s16 test_read_byte(u8 ReadAddr)
{
	
  uint8_t temp=0;		  	    																 
	IIC2_Start();  
	IIC2_Send_Byte(0xee);	     //·¢ËÍдÃüÁî
	IIC2_Wait_Ack();       
	IIC2_Send_Byte(ReadAddr);   //·¢ËͶÁµØÖ·
	IIC2_Wait_Ack();	    
	IIC2_Start();  	 	   
	IIC2_Send_Byte(0xef);       //·¢ËͶÁÃüÁ½øÈë½ÓÊÕģʽ		   
	IIC2_Wait_Ack();	 
	temp=IIC2_Read_Byte(0);		   
	IIC2_Stop();								//²úÉúÒ»¸öÍ£Ö¹Ìõ¼þ	     
	return temp;
}

/* Should return -1 or negative value in case of failure otherwise length of 
* read contents in read_buffer
* and shall place read contents in read_buffer
*/
s16 test_read_block(u8 ReadAddr, u8 Len, u8 *read_buffer)
{
   	uint8_t t;
	uint32_t temp=0;
	for(t=0;t<Len;t++)
	{
		*read_buffer=test_read_byte(ReadAddr+t); 	 	
		 read_buffer++;		
	}
	//return temp;	
    return Len;
}

/* Should return -1 in case of failure otherwise non negative number*/
s16 test_write_byte(u8 WriteAddr, u8 DataToWrite)
{
    IIC2_Start();  
	IIC2_Send_Byte(0xee);	    //·¢ËÍдÃüÁî
	IIC2_Wait_Ack();
	IIC2_Send_Byte(WriteAddr);					//·¢Ë͵ØÖ·
	IIC2_Wait_Ack();	   	 										  		   
	IIC2_Send_Byte(DataToWrite);     //·¢ËÍ×Ö½Ú							   
	IIC2_Wait_Ack();  		    	   
	IIC2_Stop();//²úÉúÒ»¸öÍ£Ö¹Ìõ¼þ 
	delay_us(10);	
}

/* Shall implement delay in milliseconds*/
void test_wait_ms(u8 delay)
{
     printf("Waiting for %dms\n",delay);
}
struct dps310_state drv_state;
f64 pressure,temperature; 
int BarInit(void)
{

    /*Instantiate driver state*/
   

    /*Instantiate bus connection callback holder*/
    dps310_bus_connection cnn;
   
   /* Assign/register platform specific bus handlers*/
    cnn.read_byte=&test_read_byte;
    cnn.read_block=&test_read_block;
    cnn.write_byte=&test_write_byte;

   /*If platform doesn't support delay or sleep
    *please assign NULL to this callback i.e cnn.delayms = NULL
    */
    cnn.delayms = &test_wait_ms;

    /*First call _init
     * this function verifies chip with appropriate id and 
     * reads and stores calibration data, configures the sensor 
     * to meet default configuration set in dps310.h.
     * This also puts the sensor in background mode
     * making it measure both pressure and temperature continuously    
     */
    int ret = dps310_init(&drv_state,&cnn);

    printf("init ret val = %d\n",ret);

    /* once sensor is put into background mode
     * pressure and temperature values are available and can be read
     * Here get_processed_data synchrounuously reads 6 bytes of raw data
     * and returns computed double precision pressure and temperature value
     */ 
    ret = dps310_get_processed_data(&drv_state,&pressure,&temperature);
    printf("get_processed_data ret val = %d, pressure = %lf, temp = %lf\n",ret,pressure,temperature);

   /*To change configuration we first need to put sensor in
    *idle mode by calling _standby
    */
//    ret = dps310_standby(&drv_state);

//    printf("standby ret val = %d\n",ret);

//    /* Now lets call _config to meet different output data rate (ODR)
//     * and oversampling rate (OSR) based on scenario and usecase
//     * For valid combinations please refer to Page 25 of datasheet
//     */
//    ret = dps310_config(&drv_state,
//                       OSR_2,
//                       TMP_MR_2,
//                       OSR_8,
//                       PM_MR_64,
//                       drv_state.tmp_ext);

//    printf("config ret val = %d\n",ret);
//   
//    /*Resume the sensor in background mode again*/
//    ret = dps310_resume(&drv_state);

//    printf("resume ret val = %d\n",ret);
   
    return 0;
}
void GetPressAndTemp(void)
{  u8 ret;    

    /*Instantiate driver state*/
  
	ret = dps310_get_processed_data(&drv_state,&pressure,&temperature);
   }