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#include "drv_tp_ns2009.h"


struct rt_i2c_bus_device 	*i2c_bus;
struct ns2009_device 		ns2009_dev={false};
rt_thread_t					TP_Thread;


on_touch_message_handle  on_touch_callback_func;

static int ns2009_ts_read_data(struct rt_i2c_bus_device * dev, rt_uint8_t cmd, rt_uint16_t * val);
static int ns2009_ts_report(ns2009_device_t dev);
static bool ns2009_init();
static void ns2009_report_thread(void* parameter);


static int ns2009_ts_read_data(struct rt_i2c_bus_device * dev, rt_uint8_t cmd, rt_uint16_t * val)
{
    struct rt_i2c_msg msgs[2];
    int ret;

    uint8_t raw_data[2];

    msgs[0].addr = dev->addr;
    msgs[0].flags = RT_I2C_WR;
    msgs[0].len = 1;
    msgs[0].buf = &cmd;

    msgs[1].addr = dev->addr;
    msgs[1].flags = RT_I2C_RD;
    msgs[1].len = 2;
    msgs[1].buf = raw_data;
    
    ret=ingenic_i2c_xfer(dev, msgs, 2);//this must 2

    *val = (raw_data[0] << 4) | (raw_data[1] >> 4);

    if (ret==2)
    	return 0; 
    else 
    	return 1;
}


static int ns2009_ts_report(ns2009_device_t dev)
{
	uint16_t x, y, z1;
	int ret;

	struct touch_message msg;


  
	
	ret = ns2009_ts_read_data(i2c_bus, NS2009_READ_Z1_LOW_POWER_12BIT, &z1);

	if (ret)
		return ret;

	if (z1 >= NS2009_PEN_UP_Z1_ERR) 
	{
		ret = ns2009_ts_read_data(i2c_bus, NS2009_READ_X_LOW_POWER_12BIT,&x);
		
		if (ret)
			return ret;

		ret = ns2009_ts_read_data(i2c_bus, NS2009_READ_Y_LOW_POWER_12BIT,&y);
		
		if (ret)
			return ret;

		if (!dev->pen_down) 
		{
			//rt_kprintf("ABS_X is %d",x);
			//rt_kprintf("ABS_Y is %d",y);
			//rt_kprintf("tp was pressed\n");
			dev->pen_down = true;

			x=(x-X_Origin)*X_Adapt_Width/X_Width;

			y=(y-Y_Origin)*Y_Adapt_Heigth/Y_Heigth;	

			msg.x = x;
       		msg.y = y;
       		msg.event = TOUCH_EVENT_DOWN;

       		(on_touch_callback_func)(&msg);

		}

		

	   


		
	} 
	else if (dev->pen_down) 
	{
		//rt_kprintf("ABS_X is %d",x);
		//rt_kprintf("ABS_Y is %d",y);
		//rt_kprintf("tp was released\n");

		msg.x = x;
       	msg.y = y;
       	msg.event = TOUCH_EVENT_UP;

       	(on_touch_callback_func)(&msg);
	
		dev->pen_down = false;
	}

	on_touch_callback_func(&msg);
	
	return 0;
}


static bool ns2009_init()
{
    //rt_uint8_t cmd[2];
    //rt_uint8_t buffer[6] = {0};


    i2c_bus = rt_i2c_bus_device_find(TOUCH_I2C_NAME);
    RT_ASSERT(i2c_bus);

    if(rt_device_open(&i2c_bus->parent, RT_DEVICE_OFLAG_RDWR) != RT_EOK)
    {
        //TPDEBUG("[TP] %s I2C not open error!\n", TOUCH_I2C_NAME);
        rt_kprintf("I2C open error\n");
        return false;
    }

    i2c_bus->addr=NS2009_Addr;
   
   // rt_thread_delay(RT_TICK_PER_SECOND / 5);


    return true;

}

static void ns2009_report_thread(void* parameter)
{
	ns2009_init();

	while(1)
	{
		ns2009_ts_report(&ns2009_dev);
		//rt_kprintf("softwind study rtt on nano pail!\n");
		rt_thread_delay(10);
	}

}


void Run_TP_Thread()
{
	TP_Thread = rt_thread_create(		"tpThread",
										ns2009_report_thread, 
										RT_NULL,
										TP_THREAD_STACK_SIZE,
										TP_THREAD_PRIORITY, 
										TP_THREAD_TIMESLICE	);

	
	if (TP_Thread != RT_NULL)
			rt_thread_startup(TP_Thread);

		else 
			rt_kprintf("thread create fail\n");




}


void start_touch_listen(on_touch_message_handle call_back)
{
	on_touch_callback_func=call_back;
}

#ifndef NS2009_Unit
#define NS2009_Unit

#include "stdbool.h"


#include <rtthread.h>
#include <rtdevice.h>

#include "drv_touch.h"
#include "drv_i2c.h"

/* polling interval in ms */
#define POLL_INTERVAL	30

/* this driver uses 12-bit readout */
#define MAX_12BIT	0xfff


#define TOUCH_I2C_NAME			"i2c0"
#define NS2009_Device_ID		"ns2009"

#define NS2009_READ_X_LOW_POWER_12BIT	0xc0
#define NS2009_READ_Y_LOW_POWER_12BIT	0xd0
#define NS2009_READ_Z1_LOW_POWER_12BIT	0xe0
#define NS2009_READ_Z2_LOW_POWER_12BIT	0xf0

#define NS2009_DEF_X_FUZZ	32
#define NS2009_DEF_Y_FUZZ	16

#define NS2009_PEN_UP_Z1_ERR	80


#define NS2009_Addr				(0x90>>1)


#define TP_THREAD_PRIORITY 25
#define TP_THREAD_STACK_SIZE 512
#define TP_THREAD_TIMESLICE 5


#define X_Origin 		300
#define X_Width			(3870-300)
#define X_Adapt_Width	800


#define Y_Origin		380
#define Y_Heigth		(3900-380)
#define Y_Adapt_Heigth	480



struct ns2009_device 
{

	//struct rt_i2c_bus_device *i2c_bus;

	bool				pen_down;
};


typedef struct ns2009_device * ns2009_device_t;


void Run_TP_Thread();


#endif