2812 flash编程小结

开始2812 Flash编程首先得准备3个文件：Flash2812_API_V210.lib，Flash281x_API_Config.h和Flash281x_API_Library.h。一个库文件和两个头文件，Flash2812_API_V210.lib和Flash281x_API_Library.h这两个文件不需要修改，但是配置文件Flash281x_API_Config.h需要修改如下：

//#define CPU_RATE    6.667L   // for a 150MHz CPU clock speed (SYSCLKOUT)
//#define CPU_RATE    7.143L   // for a 140MHz CPU clock speed (SYSCLKOUT)
//#define CPU_RATE    8.333L   // for a 120MHz CPU clock speed (SYSCLKOUT)
//#define CPU_RATE   10.000L   // for a 100MHz CPU clock speed (SYSCLKOUT)
//#define CPU_RATE   13.330L   // for a 75MHz CPU clock speed (SYSCLKOUT)
//#define CPU_RATE   20.000L   // for a 50MHz CPU clock speed  (SYSCLKOUT)
#define CPU_RATE   33.333L   // for a 30MHz CPU clock speed  (SYSCLKOUT)
//#define CPU_RATE   41.667L   // for a 24MHz CPU clock speed  (SYSCLKOUT)
//#define CPU_RATE   50.000L   // for a 20MHz CPU clock speed  (SYSCLKOUT)
//#define CPU_RATE   66.667L   // for a 15MHz CPU clock speed  (SYSCLKOUT)
//#define CPU_RATE  100.000L   // for a 10MHz CPU clock speed  (SYSCLKOUT)

看你板子的SYSCLKOUT，我的为30M

修改完成后，我三个文件导入到工程中，开始时遇到了

warning：typedef name has already been decleared (with same type)

最后发现是Flash281x_API_Library.h中的

typedef int             int16;
typedef long            int32;
typedef unsigned int    Uint16;
typedef unsigned long   Uint32;
typedef float           float32;
typedef long double     float64;

这些定义重复定义了，屏蔽掉就可以

然后设置自己所需要的PLLCR寄存器的值，我的输入晶振30M,SYSCLKOUT 30M,PLL=2;

在直接编程前先做Flash编程频率测试，用Flash_ToggleTest实现；

用示波器测试频率大概在10K左右；

现在你可以使用Flash API函数编程了；

我没有把程序放到Flash里面，只是用仿真器在RAM里面运行，下面是我的测试程序：

#include "DSP28_Device.h"
#include "stdio.h"

#define GPAMUX (volatile Uint16*)0x000070C0 // GPIO A mux
#define GPATOGGLE (volatile Uint16*)0x000070E3 // GPIO A toggle
#define GPIOA0 (Uint16)0x0001 // Pin 1mask

/*--- Global variables used to interface to the flash routines */  
FLASH_ST EraseStatus;  
FLASH_ST ProgStatus;  
FLASH_ST VerifyStatus;  

float32 VersionFloat;  
Uint16  VersionHex; 
unsigned int Send_Flag;
unsigned int i;
char *strg="abcd";
unsigned int buff[8];
unsigned int Buffer[8];
unsigned int *Flash_ptr=(unsigned int *)0x3E0000;
Uint16 Status; 
unsigned int Length=8;
void DelayNmSec(int N)
{
 unsigned int j;
 while(N--)
 for(j=0;j<65535;j++);
}

void flash_reads(unsigned int *addr,unsigned int *ptr,unsigned long length)
{
 unsigned long i;
 for(i = 0; i < length; i++)
 {
  *(ptr + i) =*(addr+i);
 }
}

void main(void)
{

 /*初始化系统*/
 InitSysCtrl();

 /*关中断*/
 DINT;
 IER = 0x0000;
 IFR = 0x0000;

 /*初始化PIE中断*/
 InitPieCtrl();

 /*初始化PIE中断矢量表*/
 InitPieVectTable(); 
 
 /*初始化SCIA寄存器*/
    InitSci();
    for(i = 0; i < 8; i++)
    {
     Sci_VarRx[i] = 0;
  Sci_VarTx[i] = 0;
    }
    Rx=Sci_VarRx;
    Tx=Sci_VarTx;
    Send_Flag = 0;
    rx_length=0;
    add=0;
    length=9;

 /*设置中断服务程序入口地址*/
 EALLOW; // This is needed to write to EALLOW protected registers
 PieVectTable.TXAINT = &SCITXINTA_ISR;
 PieVectTable.RXAINT = &SCIRXINTA_ISR;
 EDIS;   // This is needed to disable write to EALLOW protected registers

 /*开中断*/
 IER |= M_INT9;

 EINT;   // Enable Global interrupt INTM
 ERTM; // Enable Global realtime interrupt DBGM
 
 Flash_CPUScaleFactor=SCALE_FACTOR;
 Flash_CallbackPtr=NULL;
 
 VersionFloat = Flash_APIVersion();
 VersionHex = Flash_APIVersionHex(); 
 //Flash_ToggleTest(GPAMUX,GPATOGGLE,GPIOA0);
 for(i=0;i<8;i++)  
    {  
        Buffer[i] = 0x8000+i;  
    }  
 Status = Flash_Erase(SECTORG,&EraseStatus);
 if(Status == STATUS_SUCCESS)
 {
  Status = Flash_Program(Flash_ptr,Buffer,Length,&ProgStatus);
  if(Status == STATUS_SUCCESS)
  {
   Status = Flash_Verify(Flash_ptr,Buffer,Length,&VerifyStatus);
   if(Status == STATUS_SUCCESS)
   flash_reads(Flash_ptr,buff,8);

  }
  
 }
while(1)
 {
  } 
}  

//===========================================================================
// No more.
//===========================================================================