使用15W104模拟做FLASH功能
1.做程序保护，使用15W104做FLASH保存另一个芯片的程序和相关设置数据，实现FLASH-EEPROM功能，具体怎么实现求教各位大侠和版主,（接线如右图），谢谢！！用有硬件I2C的 STC8G1K08-36I-SOP8
感谢神农鼎 再请教下，用有硬件I2C的 STC8G1K08-36I-SOP8,查看手册提供的代码，I2C_SDA 和I2C_SCL 是P3.2和P3.3,代码里则是(如下)，难道是写错了吗？
sbit SDA = P1^4;
sbit SCL = P1^5; 请认真阅读数据手册，这是起源
STC8G1K08-38I-TSSOP20
STC8G1K08-36I-SOP8
{:4_196:}感谢耐心指导。 此问题衍生问题：串口助手收不到15W104串口发送的数据：
串口程序使用范例程序代码：
#include "reg51.h"
#include "intrins.h"
typedef unsigned char BYTE;
typedef unsigned int WORD;
#define FOSC 11059200L //系统频率
#define BAUD 115200 //串口波特率
#define NONE_PARITY 0 //无校验
#define ODD_PARITY 1 //奇校验
#define EVEN_PARITY 2 //偶校验
#define MARK_PARITY 3 //标记校验
#define SPACE_PARITY 4 //空白校验
#define PARITYBIT NONE_PARITY //定义校验位
sfr P0M1 = 0x93;
sfr P0M0 = 0x94;
sfr P1M1 = 0x91;
sfr P1M0 = 0x92;
sfr P2M1 = 0x95;
sfr P2M0 = 0x96;
sfr P3M1 = 0xb1;
sfr P3M0 = 0xb2;
sfr P4M1 = 0xb3;
sfr P4M0 = 0xb4;
sfr P5M1 = 0xC9;
sfr P5M0 = 0xCA;
sfr P6M1 = 0xCB;
sfr P6M0 = 0xCC;
sfr P7M1 = 0xE1;
sfr P7M0 = 0xE2;
sfr AUXR= 0x8e; //辅助寄存器
sfr P_SW1 = 0xA2; //外设功能切换寄存器1
#define S1_S0 0x40 //P_SW1.6
#define S1_S1 0x80 //P_SW1.7
//sbit P22 = P2^2;
bit busy;
void SendData(BYTE dat);
void SendString(char *s);
void main()
{
P0M0 = 0x00;
P0M1 = 0x00;
P1M0 = 0x00;
P1M1 = 0x00;
P2M0 = 0x00;
P2M1 = 0x00;
P3M0 = 0x00;
P3M1 = 0x00;
P4M0 = 0x00;
P4M1 = 0x00;
P5M0 = 0x00;
P5M1 = 0x00;
P6M0 = 0x00;
P6M1 = 0x00;
P7M0 = 0x00;
P7M1 = 0x00;
ACC = P_SW1;
ACC &= ~(S1_S0 | S1_S1); //S1_S0=0 S1_S1=0
P_SW1 = ACC; //(P3.0/RxD, P3.1/TxD)
//ACC = P_SW1;
//ACC &= ~(S1_S0 | S1_S1); //S1_S0=1 S1_S1=0
//ACC |= S1_S0; //(P3.6/RxD_2, P3.7/TxD_2)
//P_SW1 = ACC;
//
//ACC = P_SW1;
//ACC &= ~(S1_S0 | S1_S1); //S1_S0=0 S1_S1=1
//ACC |= S1_S1; //(P1.6/RxD_3, P1.7/TxD_3)
//P_SW1 = ACC;
#if (PARITYBIT == NONE_PARITY)
SCON = 0x50; //8位可变波特率
#elif (PARITYBIT == ODD_PARITY) || (PARITYBIT == EVEN_PARITY) || (PARITYBIT == MARK_PARITY)
SCON = 0xda; //9位可变波特率,校验位初始为1
#elif (PARITYBIT == SPACE_PARITY)
SCON = 0xd2; //9位可变波特率,校验位初始为0
#endif
AUXR = 0x40; //定时器1为1T模式
TMOD = 0x20; //定时器1为模式2(8位自动重载)
TL1 = (256 - (FOSC/32/BAUD)); //设置波特率重装值
TH1 = (256 - (FOSC/32/BAUD));
TR1 = 1; //定时器1开始工作
ES = 1; //使能串口中断
EA = 1;
SendString("STC15F2K60S2\r\nUart Test !\r\n");
while(1)
{
SendString("STC15W104\r\nUart Test !\r\n");
}
}
/*----------------------------
UART 中断服务程序
-----------------------------*/
void Uart() interrupt 4
{
if (RI)
{
RI = 0; //清除RI位
//P0 = SBUF; //P0显示串口数据
//P22 = RB8; //P2.2显示校验位
}
if (TI)
{
TI = 0; //清除TI位
busy = 0; //清忙标志
}
}
/*----------------------------
发送串口数据
----------------------------*/
void SendData(BYTE dat)
{
while (busy); //等待前面的数据发送完成
ACC = dat; //获取校验位P (PSW.0)
if (P) //根据P来设置校验位
{
#if (PARITYBIT == ODD_PARITY)
TB8 = 0; //设置校验位为0
#elif (PARITYBIT == EVEN_PARITY)
TB8 = 1; //设置校验位为1
#endif
}
else
{
#if (PARITYBIT == ODD_PARITY)
TB8 = 1; //设置校验位为1
#elif (PARITYBIT == EVEN_PARITY)
TB8 = 0; //设置校验位为0
#endif
}
busy = 1;
SBUF = ACC; //写数据到UART数据寄存器
}
/*----------------------------
发送字符串
----------------------------*/
void SendString(char *s)
{
while (*s) //检测字符串结束标志
{
SendData(*s++); //发送当前字符
}
}
STC15W104是12年前的老产品，无串口，你换 STC8G1K08A-36I-SOP8 {:4_167:},肤浅了，以为有TX,RX就是串口；感谢！！重新买芯片来学习！！！
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