/*! ----------------------------------------------------------------------------
 *  @file    main.c
 *  @brief   Double-sided two-way ranging (DS TWR) initiator example code
 *
 *
 *
 * @attention
 *
 * Copyright 2015 (c) Decawave Ltd, Dublin, Ireland.
 *
 * All rights reserved.
 *
 * @author Decawave
 */

#include <string.h>
#include <math.h>
#include "dw_app.h"
#include "deca_device_api.h"
#include "deca_regs.h"
#include "dw_driver.h"
#include "Spi.h"
#include "led.h"
#include "serial_at_cmd_app.h"
#include "Usart.h"
#include "global_param.h"
#include "filters.h"
#include <stdio.h>
#include "beep.h"
#include "modbus.h"
#include "CRC.h"

//#define USART_INTEGRATE_OUTPUT
/*------------------------------------ Marcos ------------------------------------------*/
/* Inter-ranging delay period, in milliseconds. */
#define RNG_DELAY_MS 100

/* Default antenna delay values for 64 MHz PRF. See NOTE 1 below. */
#define TX_ANT_DLY 0
#define RX_ANT_DLY 32899

/* UWB microsecond (uus) to device time unit (dtu, around 15.65 ps) conversion factor.
 * 1 uus = 512 / 499.2 µs and 1 µs = 499.2 * 128 dtu. */
#define UUS_TO_DWT_TIME 65536

///* Delay between frames, in UWB microseconds. See NOTE 4 below. */
///* This is the delay from the end of the frame transmission to the enable of the receiver, as programmed for the DW1000's wait for response feature. */
//#define POLL_TX_TO_RESP_RX_DLY_UUS 150
///* This is the delay from Frame RX timestamp to TX reply timestamp used for calculating/setting the DW1000's delayed TX function. This includes the
// * frame length of approximately 2.66 ms with above configuration. */
//#define RESP_RX_TO_FINAL_TX_DLY_UUS 410

///* Receive response timeout. See NOTE 5 below. */
//#define RESP_RX_TIMEOUT_UUS 600

//#define DELAY_BETWEEN_TWO_FRAME_UUS 400

////#define POLL_RX_TO_RESP_TX_DLY_UUS 470
///* This is the delay from the end of the frame transmission to the enable of the receiver, as programmed for the DW1000's wait for response feature. */
//#define RESP_TX_TO_FINAL_RX_DLY_UUS 200
///* Receive final timeout. See NOTE 5 below. */
//#define FINAL_RX_TIMEOUT_UUS 4300


#define SPEED_OF_LIGHT 299702547

/* Indexes to access some of the fields in the frames defined above. */
#define FINAL_MSG_POLL_TX_TS_IDX 10
#define FINAL_MSG_RESP_RX_TS_IDX 14
#define FINAL_MSG_FINAL_TX_TS_IDX 18
#define FINAL_MSG_TS_LEN 4

//#define _UWB_4G

static dwt_config_t config = {
#ifdef _UWB_4G
    2,               /* Channel number. */
#else
    5,
#endif
    DWT_PRF_64M,     /* Pulse repetition frequency. */
    DWT_PLEN_64,    /* Preamble length. */
    DWT_PAC8,        /* Preamble acquisition chunk size. Used in RX only. */
    9,               /* TX preamble code. Used in TX only. */
    9,               /* RX preamble code. Used in RX only. */
    1,               /* Use non-standard SFD (Boolean) */
    DWT_BR_6M8,      /* Data rate. */
    DWT_PHRMODE_STD, /* PHY header mode. */
    (65 + 8 - 8)    /* SFD timeout (preamble length + 1 + SFD length - PAC size). Used in RX only. */
};

uint32_t uwbid=0;
void Dw1000_Init(void)
{
    /* Reset and initialise DW1000.
     * For initialisation, DW1000 clocks must be temporarily set to crystal speed. After initialisation SPI rate can be increased for optimum
     * performance. */
    Reset_DW1000();//ÖØÆôDW1000 /* Target specific drive of RSTn line into DW1000 low for a period. */
    Spi_ChangePrescaler(SPIx_PRESCALER_SLOW);	//ÉèÖÃΪ¿ìËÙģʽ
    dwt_initialise(DWT_LOADUCODE);//³õʼ»¯DW1000
    Spi_ChangePrescaler(SPIx_PRESCALER_FAST);	//ÉèÖÃΪ¿ìËÙģʽ

    /* Configure DW1000. See NOTE 6 below. */
    dwt_configure(&config);//ÅäÖÃDW1000

//	 dwt_setinterrupt(  DWT_INT_RFCG | (DWT_INT_ARFE | DWT_INT_RFSL | DWT_INT_SFDT | DWT_INT_RPHE | DWT_INT_RFCE | DWT_INT_RFTO | DWT_INT_RXPTO), 1);


    /* Apply default antenna delay value. See NOTE 1 below. */
    dwt_setrxantennadelay(RX_ANT_DLY);		//ÉèÖýÓÊÕÌìÏßÑÓ³Ù
    dwt_settxantennadelay(TX_ANT_DLY);		//ÉèÖ÷¢ÉäÌìÏßÑÓ³Ù

//    dwt_setrxtimeout(1000);//É趨½ÓÊÕ³¬Ê±Ê±¼ä£¬0λûÓг¬Ê±Ê±¼ä
//	dwt_rxenable(0);//´ò¿ª½ÓÊÕ
//    uwbid=dwt_readdevid();
    /* Set expected response's delay and timeout. See NOTE 4 and 5 below.
     * As this example only handles one incoming frame with always the same delay and timeout, those values can be set here once for all. */
    //ÉèÖýÓÊÕ³¬Ê±Ê±¼ä
}
uint16_t Checksum_u16(uint8_t* pdata, uint32_t len)
{
    uint16_t sum = 0;
    uint32_t i;
    for(i=0; i<len; i++)
        sum += pdata[i];
    sum = ~sum;
    return sum;
}

u16 tag_time_recv[TAG_NUM_IN_SYS];
u8 usart_send[100];
u8 button;
extern uint8_t g_pairstart;
void tag_sleep_configuraion(void)
{
    dwt_configuresleep(0x940, 0x7);
    dwt_entersleep();
}
u32 id;
void UWB_Wkup(void)
{
u8 iderror_count = 0;
    SPIx_CS_GPIO->BRR = SPIx_CS;
    delay_us(600);
    SPIx_CS_GPIO->BSRR = SPIx_CS;
    id =  dwt_readdevid() ;
    while (0xDECA0130!=id)
    {
        
        id =  dwt_readdevid() ;
        if(iderror_count++>100)
        {
            iderror_count=0;
            printf("UWBоƬID´íÎó\r\n");
            break;
        }
    }
}
uint8_t uwb_errorflag;
uint8_t uwbrxflag;
void UWB_RXON()
{
     if(!uwb_errorflag)
     {
      uwbrxflag=1;
//    Dw1000_Init();     
    UWB_Wkup();
//    dwt_forcetrxoff();
//    dwt_setinterrupt(  DWT_INT_RFCG | (DWT_INT_ARFE | DWT_INT_RFSL | DWT_INT_SFDT | DWT_INT_RPHE | DWT_INT_RFCE | DWT_INT_RFTO | DWT_INT_RXPTO), 0);
//    delay_ms(1);
    
    dwt_setinterrupt(  DWT_INT_RFCG | (DWT_INT_ARFE | DWT_INT_RFSL | DWT_INT_SFDT | DWT_INT_RPHE | DWT_INT_RFCE | DWT_INT_RFTO | DWT_INT_RXPTO), 1);
    dwt_setrxtimeout(0);//É趨½ÓÊÕ³¬Ê±Ê±¼ä£¬0λûÓг¬Ê±Ê±¼ä
	dwt_rxenable(0);
//         HAL_NVIC_EnableIRQ(EXTI4_15_IRQn);
     }
}
void UWB_RXOFF()
{
     if(!uwb_errorflag)
     {
         uwbrxflag=0;
         dwt_forcetrxoff();
    dwt_setinterrupt(  DWT_INT_RFCG | (DWT_INT_ARFE | DWT_INT_RFSL | DWT_INT_SFDT | DWT_INT_RPHE | DWT_INT_RFCE | DWT_INT_RFTO | DWT_INT_RXPTO), 0);
    delay_ms(1);
    dwt_entersleep();
//         HAL_NVIC_DisableIRQ(EXTI4_15_IRQn);
     }
}