DSP2812读写SST39VF800A之C++程序源码

[复制链接]

588|0

手机看帖

扫描二维码
随时随地手机跟帖

电梯直达

楼主

Violin11|

楼主 | 2017-8-10 13:22 | 只看该作者回帖奖励

|倒序浏览 |阅读模式

SST39VF800, 读写, 程序源码, C++程序, DSP2812

DSP2812读写SST39VF800A之C++程序源码

DSP2812读写SST39VF800A之C++程序源码
/*-----------------------------------------------------
   DSP2812读写SST39VF800A之C++程序源码
本演示程序在Study-2812增强版上通过运行测试
------------------------------------------------------*/
#include "flash.h"

FlashObj::FlashObj(void)
{
Init();
Test();
}

void FlashObj::Init(void)
{
Active = false;
Busy = false;
MakerId = 0;
DeviceId = 0;
FlashReset();
ReadId();
Test();
}

void FlashObj::FlashReset(void)
{
Busy = true;
FLASH[0x5555] = 0xaa;
FLASH[0x2AAA] = 0x55;
FLASH[0x5555] = 0xf0;
Wait(FLASH[0x5555]);
Busy = false;
}

void FlashObj::ReadId(void)
{
Busy = true;
FLASH[0x5555] = 0xaa;
FLASH[0x2AAA] = 0x55;
FLASH[0x5555] = 0x90;
Wait(FLASH[0x5555]);
MakerId = FLASH[0x0000] & 0xff;
DeviceId = FLASH[0x0001] & 0xff;
//SST39VF800A MakerId=0xBF DeviceId=0x81
  Active = (MakerId == 0xBF) && (DeviceId == 0x81);
FlashReset();
Busy = false;
}

void FlashObj::ChipErase(void)
{
Busy = true;
FLASH[0x5555] = 0xaa;
FLASH[0x2AAA] = 0x55;
FLASH[0x5555] = 0x80;
FLASH[0x5555] = 0xaa;
FLASH[0x2AAA] = 0x55;
FLASH[0x5555] = 0x10;
Wait(FLASH[0x5555]);
Busy = false;
}

void FlashObj::SectorErase(unsigned int SectorNum)
{
Busy = true;
FLASH[0x5555] = 0xaa;
FLASH[0x2AAA] = 0x55;
FLASH[0x5555] = 0x80;
FLASH[0x5555] = 0xaa;
FLASH[0x2AAA] = 0x55;
FLASH[SectorSize * SectorNum] = 0x30;
Wait(FLASH[0x5555]);
Busy = false;
}

void FlashObj::BlockErase(unsigned int BlockNum)
{
Busy = true;
FLASH[0x5555] = 0xaa;
FLASH[0x2AAA] = 0x55;
FLASH[0x5555] = 0x80;
FLASH[0x5555] = 0xaa;
FLASH[0x2AAA] = 0x55;
FLASH[BlockSize * BlockNum] = 0x50;
Wait(FLASH[0x5555]);
Busy = false;
}

void FlashObj::Write(unsigned int & address, unsigned int val)
{
Busy = true;
FLASH[0x5555] = 0xaa;
FLASH[0x2AAA] = 0x55;
FLASH[0x5555] = 0xa0;
address = val;
Wait(address);
Busy = false;
}

void FlashObj::Wait(unsigned int & address)
{
unsigned int temp, val;
Busy = true;
do
  {
   _delay_loop_(1);
   val = address;
   _delay_loop_(1);
   temp = address;
}
while(((val ^ temp) & BIT6) != 0);
Busy = false;
}

void FlashObj::Test(void)
{
Busy = true;
if (Active)//SST39VF800A测试正常
  {
   FlashReset();
   ChipErase();
FlashReset();
   Write(FLASH[0x0000], 0x1234);
   Write(FLASH[0x5555], 0x1234);
   Write(FLASH[0x2aaa], 0xabcd);
   FlashReset();
   SectorErase(0);
   FlashReset();
   Write(FLASH[0x0000], 0x8888);
   FlashReset();
   BlockErase(0);
   Write(FLASH[0x0000], 0x6666);
   FlashReset();
}
Busy = false;

使用特权

评论回复赏

DSP2812读写SST39VF800A之C++程序源码

相关下载

相关帖子