/*
 * spi.c
 *
 *  Created on: 2021Äê6ÔÂ26ÈÕ
 *      Author: graydon
 */
#include <stdint.h>
#include <stdio.h>
#include <sru.h>
#include <def1802.h>
#include <cdef1802.h>
//#include <def21489.h>
//#include <cdef21489.h>
#include <services/int/adi_int.h>
#include <signal.h>
#include "spi.h"
#include "config.h"



typedef struct{
	spi_status_e  status;
	spi_direction_e    direction;
	short  spi_buff[SPI_PKT_SIZE];
}spi_event,*pspi_event;

static spi_event spi;

static void SPIDMA_Handler(uint32_t iid, void* arg)
{
	adi_int_ClearPending(iid);
	*pSPICTL = 0; //½ûÖ¹SPI £¬·ñÔò¿ÉÄܵ¼ÖÂËÀ»ú
	spi.status = spi_completed;
	SRU(LOW,DPI_PB11_I); //֪ͨMCU Í£Ö¹SPIͨÐÅ
}

void spi_config_dma(spi_direction_e direction)
{
	//change receive to a new dma
	if(spi.direction==spi_tx){
		*pSPICTL = 0;
		*pSPIDMAC = 0;
		*pSPISTAT = 0x56;
	}
	else if(spi.direction==spi_rx){
		*pSPICTL = 0;
		*pSPIDMAC = 0x00000080;
		*pSPISTAT = 0x56;
	}



	*pIISPI = (int)spi.spi_buff;
	*pIMSPI = 1;
	*pCSPI = SPI_PKT_SIZE;

	*pSPICTL = (SPIEN | WL16 | LSBF | TIMOD2| CPHASE |CLKPL |GM);

	if(direction==spi_tx){
		*pSPIDMAC = SPIDEN | INTEN |INTETC ;
	}
	else if(direction==spi_rx){
		*pSPIDMAC = SPIDEN | SPIRCV | INTEN |INTETC ;
	}

	spi.direction = direction;
	spi.status = spi_processing;
}


int spi_init()
{
	*pSPICTL = 0 ;
	*pSPIFLG = 0;
	*pSPISTAT= 0x56;
	*pSPIDMAC = 0;
	*pSPIBAUD = 0;

	adi_int_InstallHandler(ADI_CID_SPIHI, SPIDMA_Handler, 0, true);

	spi_config_dma(spi_rx);
	//spi.status = spi_completed;
	//spi.direction = spi_tx;

	return 0;
}


spi_status_e spi_get_status()
{
	return spi.status;
}

void* spi_get_buffer()
{
	return (void*)spi.spi_buff;
}

spi_direction_e spi_get_direction()
{
	return spi.direction;
}