#include "DSP281x_Device.h"     // DSP281x Headerfile Include File
#include "DSP281x_GlobalPrototypes.h"
#include "f2812a.h"
//#include "DSP281x_Examples.h"   // DSP281x Examples Include File
//#include "f2812a.h"
// Prototype statements for functions found within this file.
// interrupt void ISRTimer2(void);
//使用中斷：interrupt void ISRTimer2(void);
//變量聲明


void delay_loop(void);
void spi_dlb8(void);
void spi_xmit(int a);
int  spi_rev();
void spi_fifo_init(void);
void error(int);
void program_stop();
unsigned int var1=0;
unsigned int var2=0;
unsigned int var3=0;
unsigned int var4=0;
unsigned int var5=0;
unsigned int Test_count=0;
unsigned int Test_flag1=0;
unsigned int Test_flag2=0;
unsigned int Test_flag3=0;
unsigned int Test_flag4=0;
unsigned int Test_var=0;
unsigned int Test_status[32];
unsigned int PASS_flag=0;
unsigned int Ret_var1=0;
unsigned int Ret_var2=0;

//void dac_loop(void);
void main(void)
{

  
   
   //Step 1，初始化系統控制寄存器、鎖相環、看門狗以及時鐘默認狀態
   int i;
   //為充分發揮片上RAM M0/M1/L0/L1/H0的特性，設置下列寄存器
   //DevEmuRegs.M0RAMDFT=0x0300;
   //DevEmuRegs.M1RAMDFT=0x0300;
   //DevEmuRegs.L0RAMDFT=0x0300;
   //DevEmuRegs.L1RAMDFT=0x0300;
   //DevEmuRegs.H0RAMDFT=0x0300;
   
   InitSysCtrl();
   //HISPCP/LOSPCP預定標定寄存器設置
   SysCtrlRegs.HISPCP.all=0x0001;
   SysCtrlRegs.LOSPCP.all=0x0002;
   
   
   
   //Step3,初始化外設中斷向量表
   //屏蔽和清除所有CPU中斷
   DINT;
   IER=0x0000;
   IFR=0x0000;
   

   

   //初始化PIE向量表
   //InitPieVectTable()函數參考中斷一章中DSP28_DefaultIsr.c相關代碼
   //InitPieVectTable();
   
   //Step4,使用特定的函數重新分配向量使能中斷
   spi_fifo_init();// 初始化Spi FIFO
   spi_dlb8();    //設置自測試模式
   
   //設置測試狀態標志
   if (PASS_flag!=0)
      PASS_flag=0xDEAD;
   else 
      PASS_flag=0xD0BE;
   
   //Step5,循環等待
   asm ("ESTOP0");//設置軟斷點
  // for(;;);
}

   
   //Step5,所有中斷服務程序和函數
   void delay_loop()
   {
      long i;
      for (i=0;i<1000000;i++){}
   }
   
   void error(int ErrorFlag)
   {
       PASS_flag=0xDEAD;
       Test_status[Test_var]=0xDEAD;
   }
   
   //測試1,SPI 8位字符，自測試，主模式，上升沿，波特率設置0x07F
   void spi_dlb8()
   {
              
       SpiaRegs.SPICCR.all=0x0007;//SPI復位，設置時鐘為上升沿，8位字符長度
       SpiaRegs.SPICTL.all=0x0006;// 使能主模式，標準相位
                                  // 使能Talk,SPIINT屏蔽
       SpiaRegs.SPIBRR=0x0009;//設置波特率
       
       //Step2,配置芯片的通用數字I/O為希望的功能引腳
       EALLOW;
       GpioMuxRegs.GPFMUX.all=0x000F;//設置GPIO工作在SPI的功能
                         //Port F MUX-x000 0000 0000 1111
       EDIS;
       
       //退出復位狀態
       SpiaRegs.SPICCR.all=0x0087;//使SPI退出復位狀態
                                  //使能自測試模式
       //位Changes for the test
       //var3=WREN;
       spi_xmit(WREN);//發送SPI
       
       
       
       SpiaRegs.SPICTL.bit.TALK=0;
       SpiaRegs.SPICTL.bit.TALK=1;
       //SpiaRegs.SPICCR.bit.SPISWRESET=1;
       
       spi_xmit(WRITE);
       spi_xmit(0x0F);
       spi_xmit(0x0A);
       spi_xmit(0x56);
       
       //SpiaRegs.SPICCR.bit.SPISWRESET=0;
       //SpiaRegs.SPICCR.bit.SPISWRESET=1;
       SpiaRegs.SPICTL.bit.TALK=0;
       SpiaRegs.SPICTL.bit.TALK=1;
       
       spi_xmit(READ);
       spi_xmit(0x0F);
       spi_xmit(0x0A);
       Ret_var1=spi_rev();
       
       spi_xmit(RDSR);
       Ret_var2=spi_rev();
       
       SpiaRegs.SPICCR.bit.SPISWRESET=0;
       //while (SpiaRegs.SPIFFRX.bit.RXFFST!=1) {}
       //Test_flag4=SpiaRegs.SPIRXBUF;
       //if (Test_flag4!=0x4141) error(1);
       //Test_status[Test_var]=0x8000;//刷新測試狀態
       //Test_var++;
   }
   
   void spi_xmit(int a)
   {
      SpiaRegs.SPITXBUF=a;
   }
   
   int spi_rev()
   {
      return SpiaRegs.SPIRXBUF;
   }
   
   void spi_fifo_init()
   {
      //初始化SPI FIFO寄存器
      SpiaRegs.SPIFFTX.all=0xE040;
      SpiaRegs.SPIFFRX.all=0x204F;
      SpiaRegs.SPIFFCT.all=0x0;
   }