text2.c

89c51FLASH操作实例 89c51FLASH操作实例

/* --- 演示 STC89C51RC  MCU DATA_FLASH 操作--------------- */
/* --- 程序作者：电子白痴  ------------------------------- */
/* --- 此程序在STC下载板上测试通过------------------------ */
/* --- 程序研究讨论QQ：273737018 ------------------------- */
/* --- 单片机学习QQ群：19850690  ------------------------- */

#include "STC89C51RC.H"
#include <intrins.h> 

#define FLASH_BYTE_READ 1
#define FLASH_BYTE_WRITE 2
#define FLASH_SECTOR_CLR 3
#define ISP_TRIG1 0x46
#define ISP_TRIG2 0xb9
#define ISP_EN_T 0x81
#define FLASH_ADDR 0x2000//每个扇区512字节,共有10个扇区

sbit ERROR_LED = P0^0;
sbit OK_LED = P2^0;

unsigned char sector_point;
unsigned int flash_addr;
unsigned int array_point = 0;
unsigned int sector_addr[10] =
{0x2000,0x2200,0x2400,0x2600,0x2800,0x2a00,0x2c00,0x2e00,0x3000,0x3200};
unsigned char code Test_array[512] =
{
	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
	0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
	0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
	0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
	0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
	0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
	0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
	0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
	0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
	0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
	0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
	0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
	0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
	0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
	0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
	0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
	0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
	0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
	0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
	0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
	0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
	0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
	0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
	0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
	0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
	0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
	0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
	0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
	0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
	0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
	0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
	0xff, 0xfe, 0xfd, 0xfc, 0xfb, 0xfa, 0xf9, 0xf8,
	0xf7, 0xf6, 0xf5, 0xf4, 0xf3, 0xf2, 0xf1, 0xf0,
	0xef, 0xee, 0xed, 0xec, 0xeb, 0xea, 0xe9, 0xe8,
	0xe7, 0xe6, 0xe5, 0xe4, 0xe3, 0xe2, 0xe1, 0xe0,
	0xdf, 0xde, 0xdd, 0xdc, 0xdb, 0xda, 0xd9, 0xd8,
	0xd7, 0xd6, 0xd5, 0xd4, 0xd3, 0xd2, 0xd1, 0xd0,
	0xcf, 0xce, 0xcd, 0xcc, 0xcb, 0xca, 0xc9, 0xc8,
	0xc7, 0xc6, 0xc5, 0xc4, 0xc3, 0xc2, 0xc1, 0xc0,
	0xbf, 0xbe, 0xbd, 0xbc, 0xbb, 0xba, 0xb9, 0xb8,
	0xb7, 0xb6, 0xb5, 0xb4, 0xb3, 0xb2, 0xb1, 0xb0,
	0xaf, 0xae, 0xad, 0xac, 0xab, 0xaa, 0xa9, 0xa8,
	0xa7, 0xa6, 0xa5, 0xa4, 0xa3, 0xa2, 0xa1, 0xa0,
	0x9f, 0x9e, 0x9d, 0x9c, 0x9b, 0x9a, 0x99, 0x98,
	0x97, 0x96, 0x95, 0x94, 0x93, 0x92, 0x91, 0x90,
	0x8f, 0x8e, 0x8d, 0x8c, 0x8b, 0x8a, 0x89, 0x88,
	0x87, 0x86, 0x85, 0x84, 0x83, 0x82, 0x81, 0x80,
	0x7f, 0x7e, 0x7d, 0x7c, 0x7b, 0x7a, 0x79, 0x78,
	0x77, 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x70,
	0x6f, 0x6e, 0x6d, 0x6c, 0x6b, 0x6a, 0x69, 0x68,
	0x67, 0x66, 0x65, 0x64, 0x63, 0x62, 0x61, 0x60,
	0x5f, 0x5e, 0x5d, 0x5c, 0x5b, 0x5a, 0x59, 0x58,
	0x57, 0x56, 0x55, 0x54, 0x53, 0x52, 0x51, 0x50,
	0x4f, 0x4e, 0x4d, 0x4c, 0x4b, 0x4a, 0x49, 0x48,
	0x47, 0x46, 0x45, 0x44, 0x43, 0x42, 0x41, 0x40,
	0x3f, 0x3e, 0x3d, 0x3c, 0x3b, 0x3a, 0x39, 0x38,
	0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x30,
	0x2f, 0x2e, 0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28,
	0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0x20,
	0x1f, 0x1e, 0x1d, 0x1c, 0x1b, 0x1a, 0x19, 0x18,
	0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10,
	0x0f, 0x0e, 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08,
	0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00
};

void main(void)
{
//////////////全部扇区擦除
	for(sector_point = 0; sector_point < 10; sector_point++)
	{
		flash_addr = sector_addr[sector_point];
		ISP_ADDRH = flash_addr >> 8;
		ISP_ADDRL = flash_addr & 0x00ff;
		ISP_CONTR = ISP_EN_T;
		ISP_CMD = FLASH_SECTOR_CLR;
		ISP_TRIG = 0x46;
		ISP_TRIG = 0xb9;
		_nop_();
	}
//////////////对某扇区写入数组
	flash_addr = FLASH_ADDR;
	for(array_point = 0; array_point < 512; array_point++)
	{
		ISP_DATA = Test_array[array_point];
		ISP_ADDRH = flash_addr >> 8;
		ISP_ADDRL = flash_addr & 0x00ff;
		flash_addr++;
//		EA = 0;//应该可以不用这句，D版本后可以不用？
		ISP_CONTR = ISP_EN_T;
		ISP_CMD = FLASH_BYTE_WRITE;
		ISP_TRIG = 0x46;
		ISP_TRIG = 0xb9;
		_nop_();
/*
		ISP_CONTR = 0;//可以不用清零
		ISP_CMD = 0;
		ISP_TRIG = 0;
		ISP_ADDRH = 0;
		ISP_ADDRL = 0;

//		EA = 1;*/
	}
////////////读出该扇区与数组比较
	flash_addr = FLASH_ADDR;
	for(array_point = 0; array_point < 512; array_point++)
	{
		ISP_ADDRH = flash_addr >> 8;
		ISP_ADDRL = flash_addr & 0x00ff;
		flash_addr++;
//		EA = 0;//应该可以不用这句，D版本后可以不用？
		ISP_CONTR = ISP_EN_T;
		ISP_CMD = FLASH_BYTE_READ;
		ISP_TRIG = 0x46;
		ISP_TRIG = 0xb9;
		_nop_();
/*
		ISP_CONTR = 0;//可以不用清零
		ISP_CMD = 0;
		ISP_TRIG = 0;
		ISP_ADDRH = 0;
		ISP_ADDRL = 0;
//		EA = 1;*/
		if(Test_array[array_point] != ISP_DATA)
		{
			ERROR_LED = 0;
			OK_LED = 1;
			break;
		}
		else
		{
			ERROR_LED = 1;
			OK_LED = 0;
		}
	}
	while(1);
}