#ifndef __AT25640_c__
#define __AT25640_c__
//#include"Config.h"
#include"AT25640.h"
#include"Delay.h"
#define WREN 0x06//设置写入启用锁存器
#define WRDI 0x04//复位锁存器--禁止写入
#define RDSR 0x05//读状态寄存器
#define WRSR 0x01//写状态寄存器
#define READ 0x03//读数据至存储列表
#define WRITE 0x02//写数据至存储列表
/*
WREN 0000 X110 Set Write Enable Latch
WRDI 0000 X100 Reset Write Enable Latch
RDSR 0000 X101 Read Status Register
WRSR 0000 X001 Write Status Register
READ 0000 X011 Read Data from Memory Array
WRITE 0000 X010 Write Data to Memory Array
*/
void eeprom_init()
{
GPIO_InitType GPIO_InitStructure;
SPI_InitType SPI_InitStructure;
RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOA | RCC_APB2_PERIPH_SPI2, ENABLE);
GPIO_InitStructure.Pin = GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11; //SI SCK SO
GPIO_InitStructure.GPIO_Mode = GPIO_MODE_AF_PP;
GPIO_InitStructure.GPIO_Alternate = GPIO_AF0_SPI2;
GPIO_InitPeripheral(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.Pin = GPIO_PIN_8;//CS
GPIO_InitStructure.GPIO_Mode = GPIO_MODE_OUTPUT_PP;
//GPIO_InitStructure.GPIO_Alternate = GPIO_AF0_SPI2;
GPIO_InitPeripheral(GPIOA, &GPIO_InitStructure);
//GPIO_SetBits(GPIOA,GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11);
//RCC_EnableAPB2PeriphReset(RCC_APB2_PERIPH_SPI2,ENABLE);//复位SPI1
//Delay_Ms(20);
//RCC_EnableAPB2PeriphReset(RCC_APB2_PERIPH_SPI2,DISABLE);//停止复位SPI1
SPI_InitStructure.DataDirection = SPI_DIR_DOUBLELINE_FULLDUPLEX; //设置SPI单向或者双向的数据模式:SPI设置为双线双向全双工
SPI_InitStructure.SpiMode = SPI_MODE_MASTER; //设置SPI工作模式:设置为主SPI
SPI_InitStructure.DataLen = SPI_DATA_SIZE_8BITS; //设置SPI的数据大小:SPI发送接收8位帧结构
SPI_InitStructure.CLKPOL = SPI_CLKPOL_HIGH; //串行同步时钟的空闲状态为高电平
SPI_InitStructure.CLKPHA = SPI_CLKPHA_SECOND_EDGE; //串行同步时钟的第二个跳变沿（上升或下降）数据被采样
SPI_InitStructure.NSS = SPI_NSS_SOFT; //NSS信号由硬件（NSS管脚）还是软件（使用SSI位）管理:内部NSS信号有SSI位控制
SPI_InitStructure.BaudRatePres = SPI_BR_PRESCALER_4; //定义波特率预分频的值:波特率预分频值为256
SPI_InitStructure.FirstBit = SPI_FB_MSB; //指定数据传输从MSB位还是LSB位开始:数据传输从MSB位开始
SPI_InitStructure.CRCPoly = 7; //CRC值计算的多项式
SPI_Init(SPI2, &SPI_InitStructure); //根据SPI_InitStruct中指定的参数初始化外设SPIx寄存器
/* Enable SPI_MASTER TE interrupt */
//SPI_I2S_EnableInt(SPI2, SPI_I2S_INT_TE, ENABLE);
SPI_Enable(SPI2, ENABLE); //使能SPI外设
eeprom_read_write_byte(0xff);//启动传输
}
//SPI 速度设置函数
/*
#define SPI_BR_PRESCALER_2 ((uint16_t)0x0000)
#define SPI_BR_PRESCALER_4 ((uint16_t)0x0008)
#define SPI_BR_PRESCALER_8 ((uint16_t)0x0010)
#define SPI_BR_PRESCALER_16 ((uint16_t)0x0018)
#define SPI_BR_PRESCALER_32 ((uint16_t)0x0020)
#define SPI_BR_PRESCALER_64 ((uint16_t)0x0028)
#define SPI_BR_PRESCALER_128 ((uint16_t)0x0030)
#define SPI_BR_PRESCALER_256 ((uint16_t)0x0038)
*/
//void eeprom_set_speed(u8 SPI_BaudRatePrescaler)
//{
// assert_param(IS_SPI_BAUDRATE_PRESCALER(SPI_BaudRatePrescaler));//判断有效性
// SPI2->CTRL1&=0XFFC7;//位3--5清零，用来设置波特率
// SPI2->CTRL1|=SPI_BaudRatePrescaler; //设置SPI的速度
// //SPI_Enable(SPI2,ENABLE); //使能SPI1
//}
//SPIx 读写一个字节
//TxData:要写入的字节
//返回值:读取到的字节
u8 eeprom_read_write_byte(u8 TxData)//0:发送 1:接收
{
u8 retry;
while (SPI_I2S_GetStatus(SPI2, SPI_I2S_TE_FLAG) == RESET){
retry++;
if(retry>200) return 0;
} //等待发送区空 0:非空 1:空
SPI_I2S_TransmitData(SPI2, TxData); //通过外设SPIx发送一个byte 数据
while (SPI_I2S_GetStatus(SPI2, SPI_I2S_RNE_FLAG) == RESET){
retry++;
if(retry>200) return 0;
} //等待接收完一个byte 0：空 1：非空
return SPI_I2S_ReceiveData(SPI2); //返回通过SPIx最近接收的数据
}
//==============================================================================
// 描述: 在AT25读状态寄存器
// 输入: 无
// 返回: unsigned char dat 状态寄存器数据
//==============================================================================
u8 eeprom_read_sr(void)
{
u8 dat;
Eeprom_Cs_Off;
eeprom_read_write_byte(RDSR); // 写入指令0x05
dat = eeprom_read_write_byte(0xff); //读回数据
Eeprom_Cs_On;
return dat;
}
//==============================================================================
// 描述: 向AT25写入一个数据
// 输入: unsigned char Dat 字符数据
// unsigned int addr 写入的地址
// 返回: 无
//==============================================================================
void eeprom_write_byte(u16 addr,u8 Dat)
{
unsigned char Add;
while(eeprom_read_sr()&RDSR); //读状态寄存器
Eeprom_Cs_Off;
eeprom_read_write_byte(WREN); //写使能锁存器
Eeprom_Cs_On;
Eeprom_Cs_Off; // 芯片使能
// if(addr>0x00ff)
// eeprom_read_write_byte((WRITE|0x08)); //地址大于255
// else
// eeprom_read_write_byte(WRITE); //地址小于255
Add = (unsigned char)(addr & 0xff); // 将地址换成8位
eeprom_read_write_byte(Add);
eeprom_read_write_byte(Dat);
Eeprom_Cs_On;
}
//==============================================================================
// 描述: 在AT25读一个字节操作
// 输入: 无
// 返回: unsigned char dat 读出一个字符数据
//==============================================================================
u8 eeprom_read_byte(u16 addr)
{
u8 dat,add;
while(eeprom_read_sr()&RDSR); //读状态寄存器
Eeprom_Cs_Off;
// if(addr>0x00ff)
// eeprom_read_write_byte((READ | 0x08)); //地址大于255
// else
// eeprom_read_write_byte(READ); //地址小于255
add = (unsigned char)(addr & 0xff); // 将地址换成8位
eeprom_read_write_byte(add);
dat=eeprom_read_write_byte(0xff);
Eeprom_Cs_On;
return dat;
}
//==============================================================================
//描述:向AT25连续写入数据
//输入:unsigned char *PC写入数据指针
//unsigned int count 写入数量计数
//unsigned int SatAddr写入起始地址
//返回:无
//==============================================================================
void eeprom_write_buf(u16 startAddr,u8 *buf,u16 count)
{
u16 i;
while(eeprom_read_sr()&RDSR); // 读状态指令
Eeprom_Cs_Off;
eeprom_read_write_byte(WREN); //写使能锁存
Eeprom_Cs_On;
Eeprom_Cs_Off;
eeprom_read_write_byte(WRITE); //写入写操作指令
eeprom_read_write_byte(startAddr>>8); //写入地址
eeprom_read_write_byte(startAddr);
for(i=0;i<count;i++)
{
eeprom_read_write_byte(*buf++);
}
Eeprom_Cs_On;
}
//==============================================================================
//描述:向AT25连续写入n字节的数据
//输入:unsigned char *PC写入数据指针
//unsigned int count写入数据计数
//unsigned int StaAddr写入起始地址
//返回:无
//==============================================================================
void eeprom_write_nbyte(u16 startAddr,u8 *buf,u16 count)
{
u16 pageTotal=count/64;
u16 pageResidue=count%64;
u16 i;
u16 pageCnt=0;
for(i=0;i<pageTotal;i++)
{
eeprom_write_buf(startAddr+pageCnt,&buf[pageCnt],64);
pageCnt+=64;
}
eeprom_write_buf(startAddr+pageCnt,&buf[pageCnt],pageResidue);
}
//==============================================================================
//描述:在AT25连续读数据
//输入:unsigned char *PC读出数据指针
//unsigned int count 读出数量指针
//unsigned int StaAddr读出起始指针
//==============================================================================
void eeprom_read_buf(u16 startAddr,u8 *buf,u16 count)
{
unsigned int i;
while(eeprom_read_sr()&RDSR); //读状态寄存器
Eeprom_Cs_Off;
eeprom_read_write_byte(READ); //写入读操作指令
eeprom_read_write_byte(startAddr>>8);
eeprom_read_write_byte(startAddr);
for(i=0;i<count;i++)
{
*buf++ = eeprom_read_write_byte(0xff);
}
Eeprom_Cs_On;
}
#endif
这个是SPI通讯
#include"Include.h"
void RCC_Configuration(void)
{
/* TIM1, GPIOA, GPIOB, GPIOE and AFIO clocks enable */
RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOA | RCC_APB2_PERIPH_GPIOB |
RCC_APB2_PERIPH_TIM1 | RCC_APB2_PERIPH_AFIO , ENABLE);
RCC_EnableAPB1PeriphClk(RCC_APB1_PERIPH_TIM3,ENABLE);
/* Enable SPI_MASTER Periph clock */
//RCC_EnableAPB2PeriphClk(SPI_MASTER_GPIO_CLK | SPI_MASTER_CLK , ENABLE);
//When debug ,TIM1 and TIM3 stop
DBG_ConfigPeriph(DBG_TIM1_STOP | DBG_TIM3_STOP , ENABLE);
}
void NVIC_Configuration(void)
{
NVIC_InitType NVIC_InitStructure;
/* Enable the USARTy Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void GPIO_Configuration()
{
GPIO_InitType GPIO_InitStructure;
RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOA | RCC_APB2_PERIPH_GPIOB,ENABLE);
GPIO_InitStruct(&GPIO_InitStructure);//初始化GPIO--复位所有IO为默认设置
GPIO_InitStructure.Pin = GPIO_PIN_3 ;
GPIO_InitStructure.GPIO_Mode = GPIO_MODE_AF_PP;//复用功能
GPIO_InitStructure.GPIO_Current = GPIO_DC_LOW;
GPIO_InitStructure.GPIO_Alternate = GPIO_AF3_TIM1;
GPIO_InitPeripheral(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.Pin = GPIO_PIN_5 ;
GPIO_InitStructure.GPIO_Mode = GPIO_MODE_AF_PP;//复用功能
GPIO_InitStructure.GPIO_Current = GPIO_DC_HIGH;
GPIO_InitStructure.GPIO_Alternate = GPIO_AF4_TIM1;
GPIO_InitPeripheral(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.Pin = GPIO_PIN_0 ;
GPIO_InitStructure.GPIO_Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitPeripheral(GPIOA, &GPIO_InitStructure);
}
void Send_Dat(Uchar Data_Out)
{
USART_SendData(USART1,Data_Out);
while(USART_GetFlagStatus(USART1,USART_FLAG_TXDE)==RESET);
}
int main(void)
{
Uchar Dat;
RCC_Configuration();
GPIO_Configuration();
Usart1_Init(115200);
TIM_Initial(TIM1);
TIM3_Int_Init(9,47);
eeprom_init();
Delay_Init();
while(1)
{
if(Time.T_500ms) {
Time.T_500ms=0;
eeprom_write_byte(0x00,0x02);
Delay_Ms(10);
Dat=eeprom_read_byte(0x00);
Send_Dat(Dat);
Flag.Led=!Flag.Led;
if(Flag.Led) {
RunLed_On;
RedLed_On;
// USART_SendData(USART1,0xAA);
// while(USART_GetFlagStatus(USART1,USART_FLAG_TXDE)==RESET);
}
else {
RunLed_Off;
RedLed_Off;
// USART_SendData(USART1,0xBB);
// while(USART_GetFlagStatus(USART1,USART_FLAG_TXDE)==RESET);
}
Send_Dat(0xAB);
}
if(Flag.Led_On) {
Flag.Led_On=0;
//RunLed_On;
Send_Tu_Ta(1,1);
}
else if(Flag.Led_Off) {
Flag.Led_Off=0;
//RunLed_Off;
Send_Tu_Ta(1,10);
}
if(Time.T_1ms) {
Time.T_1ms=0;
Usart1_Reset();
}
}
}
这个是MAIN函数，不知道调用错了没有？ | 
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