前言
- SPI 介绍为搜集百度资料+个人理解
- 其余为原创（有误请指正）
- 集四种模式于一身
- demo 采用MX25L64的FLASH芯片
bsp_spi.c
/**
******************************************************************************
* @file bsp_spi.c
* @author lzm
* @version V1.0
* @date 2020-09-26
* @brief 采用 软件 SPI
* @attention
*
* 实验平台:LZM
*
******************************************************************************
*/
#include "bsp_spi.h"
/*
*********************************************************************************************************
* DEFINE STATIC FUNCTION (API)
*********************************************************************************************************
*/
/* basic */
#define spiOutHi(gpio, pin) {gpio->BSRR=pin;} //输出为高电平
#define spiOutLo(gpio, pin) {gpio->BRR=pin;} //输出为低电平
#define spiOut(gpio, pin, lev) (lev)?(gpio->BSRR=pin):(gpio->BRR=pin)
#define spiIn(gpio, pin) GPIO_ReadInputDataBit(gpio, pin)
/* top */
/* spi 为指针 */
#define spiCsOutHi(spi) spiOutHi(spi->csGpiox, spi->csPin)
#define spiCsOutLo(spi) spiOutLo(spi->csGpiox, spi->csPin)
#define spiSckOutHi(spi) spiOutHi(spi->sckGpiox, spi->sckPin)
#define spiSckOutLo(spi) spiOutLo(spi->sckGpiox, spi->sckPin)
#define spiMosiOutHi(spi) spiOutHi(spi->mosiGpiox, spi->mosiPin)
#define spiMosiOutLo(spi) spiOutLo(spi->mosiGpiox, spi->mosiPin)
#define spiMisoIn(spi) spiIn(spi->misoGpiox, spi->misoPin)
/*
*********************************************************************************************************
* DEFINE
*********************************************************************************************************
*/
// spi 驱动元素（驱动表）
spi_t spiDriverElem[spiSPI_DRIVER_COUNT];
/**
* @brief 选出时钟信号线
* @param
* @retval
* @author lzm
*/
static uint32_t __selectClkByGpio(const uint32_t addr)
{
switch(addr)
{
case GPIOA_BASE:
return RCC_APB2Periph_GPIOA;
case GPIOB_BASE:
return RCC_APB2Periph_GPIOB;
case GPIOC_BASE:
return RCC_APB2Periph_GPIOC;
case GPIOD_BASE:
return RCC_APB2Periph_GPIOD;
case GPIOE_BASE:
return RCC_APB2Periph_GPIOE;
case GPIOF_BASE:
return RCC_APB2Periph_GPIOF;
case GPIOG_BASE:
return RCC_APB2Periph_GPIOG;
}
return NULL;
}
/**
* @brief 初始化 SPI 引脚
* @param
* @retval
* @author lzm
*/
void spiGpioInit(eSPI_ID id)
{
GPIO_InitTypeDef GPIO_InitStructure; //定义结构体
uint32_t csGpioClk;
uint32_t sckGpioClk;
uint32_t mosiGpioClk;
uint32_t misoGpioClk;
const spi_t * spi = &spiDriverElem[id];
csGpioClk = __selectClkByGpio((uint32_t)(spi->csGpiox));
sckGpioClk = __selectClkByGpio((uint32_t)(spi->sckGpiox));
mosiGpioClk = __selectClkByGpio((uint32_t)(spi->csGpiox));
misoGpioClk = __selectClkByGpio((uint32_t)(spi->misoGpiox));
RCC_APB2PeriphClockCmd(csGpioClk | sckGpioClk | mosiGpioClk | misoGpioClk, ENABLE); //打开时钟
GPIO_InitStructure.GPIO_Pin = spi->csPin; //配置端口及引脚(指定方向)
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(spi->csGpiox, &GPIO_InitStructure); //初始化端口（开往指定方向）
GPIO_InitStructure.GPIO_Pin = spi->sckPin;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(spi->sckGpiox, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = spi->mosiPin;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(spi->mosiGpiox, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = spi->misoPin;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(spi->misoGpiox, &GPIO_InitStructure);
spiCsOutHi(spi);
}
/**
* @brief SPI 发送
* @param
* @retval
* @author lzm
*/
void spiWriteOneByte(eSPI_ID id, unsigned char data)
{
unsigned char i;
const spi_t * spi = &spiDriverElem[id];
if(spi->CPHA){
spiOut(spi->sckGpiox, spi->sckPin, spi->CPOL);
}
// spi->delayUsFun(spi->readDelayUsCnt);
for(i=0; i<8; i++)
{
spiOut(spi->sckGpiox, spi->sckPin, (spi->CPOL != spi->CPHA));
if(data & 0x80){
spiMosiOutHi(spi);
}
else{
spiMosiOutLo(spi);
}
data <<= 1;
spi->delayUsFun(spi->readDelayUsCnt);
spiOut(spi->sckGpiox, spi->sckPin, (spi->CPOL == spi->CPHA));
}
if(!(spi->CPHA)){
spiOut(spi->sckGpiox, spi->sckPin, spi->CPOL);
}
}
/**
* @brief SPI 读取
* @param
* @retval
* @author lzm
*/
unsigned char spiReadOneByte(eSPI_ID id)
{
unsigned char i;
unsigned char ret;
const spi_t * spi = &spiDriverElem[id];
for(i=0; i<8; i++)
{
spiOut(spi->sckGpiox, spi->sckPin, (spi->CPOL != spi->CPHA));
ret <<= 1;
if(spiMisoIn(spi))
ret |= 0x01;
else
ret &= 0xfe;
spi->delayUsFun(spi->readDelayUsCnt);
spiOut(spi->sckGpiox, spi->sckPin, (spi->CPOL == spi->CPHA));
}
spiOut(spi->sckGpiox, spi->sckPin, spi->CPOL);
return ret;
}
/**
* @brief SPI 读写
* @param
* @retval
* @author lzm
*/
unsigned char spiRWOneByte(eSPI_ID id, unsigned char data)
{
unsigned char i;
unsigned char ret;
const spi_t * spi = &spiDriverElem[id];
if(spi->CPHA){
spiOut(spi->sckGpiox, spi->sckPin, spi->CPOL);
}
for(i=0; i<8; i++)
{
spiOut(spi->sckGpiox, spi->sckPin, (spi->CPOL != spi->CPHA));
if(data & 0x80){
spiMosiOutHi(spi);
}
else{
spiMosiOutLo(spi);
}
data <<= 1;
spi->delayUsFun(spi->readDelayUsCnt);
spiOut(spi->sckGpiox, spi->sckPin, (spi->CPOL == spi->CPHA));
ret <<= 1;
if(spiMisoIn(spi))
ret |= 0x01;
else
ret &= 0xfe;
spi->delayUsFun(spi->readDelayUsCnt);
}
if(!(spi->CPHA)){
spiOut(spi->sckGpiox, spi->sckPin, spi->CPOL);
}
}
/**
* @brief SPI 片选使能
* @param
* @retval
* @author lzm
*/
void spiCSOut(eSPI_ID id, unsigned char lev)
{
const spi_t * spi = &spiDriverElem[id];
spiOut(spi->csGpiox, spi->csPin, lev);
}
/*
*********************************************************************************************************
* DEFINE [API] FUNCTION
*********************************************************************************************************
*/
/**
* @brief 注册SPI设备
* spiDriverElem[spiID].id = spiID; // 保持下标与ID相等，查找时可以直接定位，实现时间复杂度为O(1);
* @param
* @retval
* @author lzm
*/
void REGISTER_SPI_DEV(spi_t * spi)
{
if(spi->id >= espiSPI_DRIVER_COUNT)
return;
spiDriverElem[spi->id].id = spi->id;
spiDriverElem[spi->id].method = spi->method;
spiDriverElem[spi->id].CPOL = spi->CPOL;
spiDriverElem[spi->id].CPHA = spi->CPHA;
spiDriverElem[spi->id].readDelayUsCnt = spi->readDelayUsCnt;
spiDriverElem[spi->id].delayUsFun = spi->delayUsFun;
spiDriverElem[spi->id].csGpiox = spi->csGpiox;
spiDriverElem[spi->id].csPin = spi->csPin;
spiDriverElem[spi->id].sckGpiox = spi->sckGpiox;
spiDriverElem[spi->id].sckPin = spi->sckPin;
spiDriverElem[spi->id].mosiGpiox = spi->mosiGpiox;
spiDriverElem[spi->id].mosiPin = spi->mosiPin;
spiDriverElem[spi->id].misoGpiox = spi->misoGpiox;
spiDriverElem[spi->id].misoPin = spi->misoPin;
}
bsp_spi.h
/**
******************************************************************************
* @file bsp_spi.h
* @author lzm
* @version V1.0
* @date 2020-09-26
* @brief 采用 硬件 SPI
* @attention
*
* 实验平台:LZM
*
******************************************************************************
*/
#ifndef _BSP_SPI_H_
#define _BSP_SPI_H_
#include "LssAppConfig.h"
/*
*********************************************************************************************************
* CONFIG API
*********************************************************************************************************
*/
// [注][spi]实时修改
// spi 设备数量
#define spiSPI_DRIVER_COUNT 1
/* spi id. */
typedef enum
{
espiFLASH_A = 0,
espiSPI_DRIVER_COUNT,
}eSPI_ID;
/* spi mode. */
typedef enum
{
espiHARDWARE = 0,
espiSOFTWARE,
}eSPI_METHOD;
/*
*********************************************************************************************************
* BASIC
*********************************************************************************************************
*/
/* spi */
struct SPI_T{
/* id */
eSPI_ID id;
/* software spi */
/* method */
eSPI_METHOD method;
/* CPOL CPHA : 00 01 10 11*/
/* cpol */
unsigned char CPOL;
/* cpha */
unsigned char CPHA;
/* delay */
/* cnt */
unsigned int readDelayUsCnt;
/* function */
void ( *delayUsFun )(int cnt);
/* hardware spi */
SPI_TypeDef* SPIx;
/* pin */
GPIO_TypeDef * csGpiox;
uint16_t csPin;
GPIO_TypeDef * sckGpiox;
uint16_t sckPin;
GPIO_TypeDef * mosiGpiox;
uint16_t mosiPin;
GPIO_TypeDef * misoGpiox;
uint16_t misoPin;
};
typedef struct SPI_T spi_t;
/*
*********************************************************************************************************
* BROADCAST
*********************************************************************************************************
*/
/* device table */
extern spi_t spiDriverElem[spiSPI_DRIVER_COUNT];
/* function */
void spiGpioInit(eSPI_ID id);
void spiWriteOneByte(eSPI_ID id, unsigned char data);
unsigned char spiReadOneByte(eSPI_ID id);
void spiCSOut(eSPI_ID id, unsigned char lev);
void REGISTER_SPI_DEV(spi_t * spi);
#endif
bsp_flash.c
/**
******************************************************************************
* @file bsp_flash.c
* @author lzm
* @version V1.0
* @date 2020-10-29
* @brief
* @attention
*
* 实验平台:LZM
*
******************************************************************************
*/
#include "bsp_flash.h"
#include "lss_IO.h"
#include "boardInfo.h"
/*
*********************************************************************************************************
* DEFINE
*********************************************************************************************************
*/
// flash 设备元素（设备表）
flash_t flashDeviceElem[flashFLASH_DEVICE_COUNT];
/**
* @brief 写一个字节到外挂 Flash
* @param id : flash 设备 id
* @param data : 需要写入的数据
* @retval
* @author lzm
*/
void flashWriteByte(eFLASH_ID id, unsigned char data)
{
eSPI_ID spiid = flashDeviceElem[id].spiID;
spiWriteOneByte(spiid, data);
}
/**
* @brief 从外挂flash中读取一个字节
* @param id : flash 设备 id
* @param data : 需要写入的数据
* @retval
* @author lzm
*/
unsigned char flashReadByte(eFLASH_ID id)
{
unsigned char ch;
eSPI_ID spiid = flashDeviceElem[id].spiID;
ch = spiReadOneByte(spiid);
return ch;
}
/*
*********************************************************************************************************
* [业务]
*********************************************************************************************************
*/
/**
* @brief 读取flash状态寄存器
* @brief BIT7 6 5 4 3 2 1 0
* @brief SPR RV TB BP2 BP1 BP0 WEL BUSY
* @brief SPR:默认0,状态寄存器保护位,配合WP使用
* @brief TB,BP2,BP1,BP0:FLASH区域写保护设置
* @brief WEL:写使能锁定
* @brief BUSY:忙标记位(1,忙;0,空闲)
* @brief 默认:0x00
* @param id : flash 设备 id
* @author lzm
*/
unsigned char mx25lxxReadSR(eFLASH_ID id)
{
unsigned char ch;
eSPI_ID spiid = flashDeviceElem[id].spiID;
spiCSOut(spiid, 0);
spiWriteOneByte(spiid, mx25lxxREAD_STATUS_REG);
ch = spiReadOneByte(spiid);
spiCSOut(spiid, 1);
return ch;
}
/**
* @brief 写flash状态寄存器
* @brief 只有SPR,TB,BP2,BP1,BP0(bit 7,5,4,3,2)可以写!!!
* @param id : flash 设备 id
* @author lzm
*/
void mx25lxxWriteSR(eFLASH_ID id, unsigned char data)
{
eSPI_ID spiid = flashDeviceElem[id].spiID;
spiCSOut(spiid, 0);
spiWriteOneByte(spiid, mx25lxxWRITE_STATUS_REG);
spiWriteOneByte(spiid, data);
spiCSOut(spiid, 1);
}
/**
* @brief 等待空闲
* @param id : flash 设备 id
* @author lzm
*/
void mx25lxxWaitBusy(eFLASH_ID id)
{
while((mx25lxxReadSR(id)&0x01)==0x01); // 等待BUSY位清空
}
/**
* @brief 写使能
* @param id : flash 设备 id
* @author lzm
*/
void mx25lxxWriteEnable(eFLASH_ID id)
{
eSPI_ID spiid = flashDeviceElem[id].spiID;
spiCSOut(spiid, 0);
spiWriteOneByte(spiid, mx25lxxWRITE_ENABLE);
spiCSOut(spiid, 1);
}
/**
* @brief 写禁止
* @param id : flash 设备 id
* @author lzm
*/
void mx25lxxWriteDisable(eFLASH_ID id)
{
eSPI_ID spiid = flashDeviceElem[id].spiID;
spiCSOut(spiid, 0);
spiWriteOneByte(spiid, mx25lxxWRITE_DISABLE);
spiCSOut(spiid, 1);
}
/**
* @brief 读取芯片ID
* @param id : flash 设备 id
* @retval 0Xxx13,表示芯片型号为W25Q80
* @retval 0Xxx14,表示芯片型号为W25Q16
* @retval 0Xxx15,表示芯片型号为W25Q32
* @retval 0Xxx16,表示芯片型号为W25Q64
* @retval 0Xxx17,表示芯片型号为W25Q128
* @author lzm
*/
unsigned int mx25lxxReadID(eFLASH_ID id)
{
unsigned int ret;
eSPI_ID spiid = flashDeviceElem[id].spiID;
spiCSOut(spiid, 0);
spiWriteOneByte(spiid, 0x90);
spiWriteOneByte(spiid, 0x00);
spiWriteOneByte(spiid, 0x00);
spiWriteOneByte(spiid, 0x00);
ret |= spiReadOneByte(spiid)<<8;
ret |= spiReadOneByte(spiid);
spiCSOut(spiid, 1);
return ret;
}
/**
* @brief 在指定地址开始读取指定长度的数据
* @param id : flash 设备 id
* @param readAddr : 开始读取的地址(24bit)
* @param pReadBuff : 数据存储区
* @param size : 字节数
* @author lzm
*/
void mx25lxxReadBytes(eFLASH_ID id, uint32_t readAddr, uint8_t * pReadBuff, uint16_t size)
{
uint16_t i;
eSPI_ID spiid = flashDeviceElem[id].spiID;
spiCSOut(spiid, 0);
spiWriteOneByte(spiid, mx25lxxREAD_DATA);
spiWriteOneByte(spiid, (u8)((readAddr)>>16));
spiWriteOneByte(spiid, (u8)((readAddr)>>8));
spiWriteOneByte(spiid, (u8)readAddr);
for(i=0;i<size;i++)
{
pReadBuff[i]=spiReadOneByte(spiid); //循环读数
}
spiCSOut(spiid, 1);
}
/**
* @brief 在指定地址开始写入最大256字节的数据
* @param id : flash 设备 id
* @param writeAddr : 开始写的地址(24bit)
* @param pReadBuff : 数据存储区
* @param size : 字节数
* @author lzm
*/
void mx25lxxWriteBytes(eFLASH_ID id, uint32_t writeAddr, uint8_t * pWriteBuff, uint16_t size)
{
uint16_t i;
eSPI_ID spiid = flashDeviceElem[id].spiID;
mx25lxxWriteEnable(id);
spiCSOut(spiid, 0);
spiWriteOneByte(spiid, mx25lxxPAGE_PROGRAM);
spiWriteOneByte(spiid, (u8)((writeAddr)>>16));
spiWriteOneByte(spiid, (u8)((writeAddr)>>8));
spiWriteOneByte(spiid, (u8)writeAddr);
for(i=0;i<size;i++)
{
spiWriteOneByte(spiid,pWriteBuff[i]); //循环读数
}
spiCSOut(spiid, 1);
}
/**
* @brief 无检验写SPI FLASH
* @brief 必须确保所写的地址范围内的数据全部为0XFF,否则在非0XFF处写入的数据将失败!
* @brief 具有自动换页功能
* @brief 在指定地址开始写入指定长度的数据,但是要确保地址不越界!
* @param id : flash 设备 id
* @param readAddr : 开始读取的地址(24bit)
* @param pReadBuff : 数据存储区
* @param size : 字节数
* @author lzm
*/
void mx25lxxWriteNoCheck(eFLASH_ID id, uint32_t writeAddr, uint8_t * pWriteBuff, uint16_t size)
{
uint16_t residueSize;
residueSize = 0xFF - writeAddr%0XFF;
if(size<=residueSize) residueSize=size;//不大于256个字节
while(1)
{
mx25lxxWriteBytes(id, writeAddr, pWriteBuff, residueSize);
if(size==residueSize)
break;//写入结束了
else //size>pageremain
{
pWriteBuff+=residueSize;
writeAddr+=residueSize;
size-=residueSize; //减去已经写入了的字节数
if(size>256)residueSize=256; //一次可以写入256个字节
else residueSize=size; //不够256个字节了
}
}
}
/**
* @brief 擦除一个扇区(擦除一个扇区的最少时间:150ms)
* @param id : flash 设备 id
* @param eraseAddr : 扇区地址 根据实际容量设置
* @author lzm
*/
void mx25lxxEraseSector(eFLASH_ID id, uint32_t eraseAddr)
{
eSPI_ID spiid = flashDeviceElem[id].spiID;
eraseAddr*=4096;
mx25lxxWriteEnable(id); //SET WEL
mx25lxxWaitBusy(id);
spiCSOut(spiid, 0); //使能器件
spiWriteOneByte(spiid, mx25lxxSECTOR_ERASE); //发送扇区擦除指令
spiWriteOneByte(spiid, (u8)((eraseAddr)>>16)); //发送24bit地址
spiWriteOneByte(spiid, (u8)((eraseAddr)>>8));
spiWriteOneByte(spiid, (u8)eraseAddr);
spiCSOut(spiid, 1); //取消片选
mx25lxxWaitBusy(id); //等待擦除完成
}
/**
* @brief 进入掉电模式
* @param id : flash 设备 id
* @author lzm
*/
void mx25lxxPowerDown(eFLASH_ID id)
{
eSPI_ID spiid = flashDeviceElem[id].spiID;
spiCSOut(spiid, 0); //使能器件
spiWriteOneByte(spiid, mx25lxxPOWER_DOWN); //发送掉电命令
spiCSOut(spiid, 1); //取消片选
}
/**
* @brief 唤醒
* @param id : flash 设备 id
* @author lzm
*/
void mx25lxxWakeUp(eFLASH_ID id)
{
eSPI_ID spiid = flashDeviceElem[id].spiID;
spiCSOut(spiid, 0); //使能器件
spiWriteOneByte(spiid, mx25lxxRELEASE_POWER_DOWN); //发送掉电命令
spiCSOut(spiid, 1); //取消片选
}
/**
* @brief 擦除其实就是写 1
* @param id : flash 设备 id
* @param eraseAddr : 开始写的地址(24bit)
* @param pEraseBuff : 数据存储区
* @param size : 字节数
* @author lzm
*/
uint8_t mx25lxxBUFFER[4096];
void mx25lxxEraseBytes(eFLASH_ID id, uint32_t eraseAddr, uint8_t * pEraseBuff, uint16_t size)
{
uint16_t i;
uint32_t secAddr; //扇区地址
uint16_t secOff; //在扇区内的偏移
uint16_t secResidueSize; //扇区剩余空间大小
u8 * mx25lxxBUF;
mx25lxxBUF = mx25lxxBUFFER;
secAddr=eraseAddr/4096;//扇区地址
secOff=eraseAddr%4096;//在扇区内的偏移
secResidueSize=4096-secOff;//扇区剩余空间大小
if(size<=secResidueSize)secResidueSize=size;//不大于4096个字节
while(1)
{
mx25lxxReadBytes(id, secAddr*4096, mx25lxxBUFFER, 4096);//读出整个扇区的内容
for(i=0;i<secResidueSize;i++)//校验数据
{
if(mx25lxxBUF[secOff+i]!=0XFF)break;//需要擦除
}
if(i<secResidueSize)//需要擦除
{
mx25lxxEraseSector(id, secAddr); //擦除这个扇区
for(i=0;i<secResidueSize;i++) //复制
{
mx25lxxBUF[i+secOff]=pEraseBuff[i];
}
mx25lxxWriteNoCheck(id,secAddr*4096,mx25lxxBUF,4096);//写入整个扇区
}
else
mx25lxxWriteNoCheck(id,eraseAddr,pEraseBuff,secResidueSize);//写已经擦除了的,直接写入扇区剩余区间.
if(size==secResidueSize)
break;//写入结束了
else//写入未结束
{
secAddr++;//扇区地址增1
secOff=0;//偏移位置为0
pEraseBuff+=secResidueSize; //指针偏移
eraseAddr+=secResidueSize; //写地址偏移
size-=secResidueSize; //字节数递减
if(size>4096)
secResidueSize=4096;//下一个扇区还是写不完
else
secResidueSize=size; //下一个扇区可以写完了
}
};
}
/**
* @brief 擦除整个芯片(时间较长)
* @param id : flash 设备 id
* @author lzm
*/
void ITC_MX25LXX_EraseChip(eFLASH_ID id)
{
eSPI_ID spiid = flashDeviceElem[id].spiID;
mx25lxxWriteEnable(id); //SET WEL
mx25lxxWaitBusy(id);
spiCSOut(spiid, 0); //使能器件
spiWriteOneByte(spiid, mx25lxxCHIP_ERASE); //发送片擦除命令
spiCSOut(spiid, 1); //取消片选
mx25lxxWaitBusy(id); //等待芯片擦除结束
}
/**
* @brief 所有外挂FLASH设备初始化
* @param
* @retval
* @author lzm
*/
void flashInit(void)
{
uint8_t flashID;
spi_t spi;
unsigned int devID;
// 先注册 SPI 驱动
spi.id = espiFLASH_A;
spi.method = espiSOFTWARE;
spi.CPOL = 1;
spi.CPHA = 1;
spi.readDelayUsCnt = 1;
spi.delayUsFun = dwtDelayUs;
spi.csGpiox = mx25lxxFLASH_SPI_CS_PORT;
spi.csPin = mx25lxxFLASH_SPI_CS_PIN;
spi.sckGpiox = mx25lxxFLASH_SPI_SCK_PORT;
spi.sckPin = mx25lxxFLASH_SPI_SCK_PIN;
spi.mosiGpiox = mx25lxxFLASH_SPI_MOSI_PORT;
spi.mosiPin = mx25lxxFLASH_SPI_MOSI_PIN;
spi.misoGpiox = mx25lxxFLASH_SPI_MISO_PORT;
spi.misoPin = mx25lxxFLASH_SPI_MISO_PIN;
REGISTER_SPI_DEV(&spi);
// 注册 FLASH 设备并绑定 i2c
REGISTER_FLASH_DEV(eMX25lXX_1, espiFLASH_A);
for (flashID = 0; flashID < flashFLASH_DEVICE_COUNT; flashID++)
{
// 初始化 I2C
spiGpioInit( (eSPI_ID)(espiFLASH_A + flashID) );
devID = mx25lxxReadID((eFLASH_ID)flashID);
if(devID == 0XFFFF)
{
printf("
[flashInit] [faild] and error devID is [%d]", devID);
}
else
{
printf("
[flashInit] [successful] devID is [%d]", devID);
}
}
}
bsp_flash.h
/**
******************************************************************************
* @file flash.h
* @author lzm
* @version V1.0
* @date 2020-10-29
* @brief
* @attention
*
* 实验平台:ITC
*
******************************************************************************
*/
#ifndef _BSP_FLASH_H_
#define _BSP_FLASH_H_
#include "LssAppConfig.h"
#include "bsp_spi.h"
/*
*********************************************************************************************************
* MX25L64 指令表 [业务]
*********************************************************************************************************
*/
#define mx25lxxWRITE_ENABLE 0x06
#define mx25lxxWRITE_DISABLE 0x04
#define mx25lxxREAD_STATUS_REG 0x05
#define mx25lxxWRITE_STATUS_REG 0x01
#define mx25lxxREAD_DATA 0x03
#define mx25lxxFAST_READ_DATA 0x0B
#define mx25lxxFAST_READ_DUAL 0x3B
#define mx25lxxPAGE_PROGRAM 0x02
#define mx25lxxBLOCK_ERASE 0xD8
#define mx25lxxSECTOR_ERASE 0x20
#define mx25lxxCHIP_ERASE 0xC7
#define mx25lxxPOWER_DOWN 0xB9
#define mx25lxxRELEASE_POWER_DOWN 0xAB
#define mx25lxxDEVICE_ID 0xAB
#define mx25lxxMANUFACT_DEVICE_ID 0x90
#define mx25lxxJEDCE_DEVICE_ID 0x9F
/*
*********************************************************************************************************
* CONFIG API
*********************************************************************************************************
*/
/* [注][flash]实时修改 */
// flash 设备数量
#define flashFLASH_DEVICE_COUNT 1
/* flash id. */
typedef enum
{
eMX25lXX_1 = 0, //
eflashFLASH_DEVICE_COUNT,
}eFLASH_ID;
/*
*********************************************************************************************************
* BASIC
*********************************************************************************************************
*/
/* flash */
struct FLASH_T{
/* id */
eFLASH_ID ID;
/* spi id */
eSPI_ID spiID;
};
typedef struct FLASH_T flash_t;
/*
*********************************************************************************************************
* DEFINE [API] FUNCTION
*********************************************************************************************************
*/
/**
* @brief 注册IIC设备
* @param
* @retval
* @author lzm
*/
#define REGISTER_FLASH_DEV(flashid, spicid)
{
flashDeviceElem[flashid].ID = flashid;
flashDeviceElem[flashid].spiID = spicid;
}
/*
*********************************************************************************************************
* BROADCAST
*********************************************************************************************************
*/
/* device table */
extern flash_t flashDeviceElem[flashFLASH_DEVICE_COUNT];
/* function */
unsigned char mx25lxxReadSR(eFLASH_ID id);
void mx25lxxWriteSR(eFLASH_ID id, unsigned char data);
void mx25lxxWaitBusy(eFLASH_ID id);
void mx25lxxWriteEnable(eFLASH_ID id);
void mx25lxxWriteDisable(eFLASH_ID id);
unsigned int mx25lxxReadID(eFLASH_ID id);
void mx25lxxReadBytes(eFLASH_ID id, uint32_t readAddr, uint8_t * pReadBuff, uint16_t size);
void mx25lxxWriteBytes(eFLASH_ID id, uint32_t writeAddr, uint8_t * pWriteBuff, uint16_t size);
void mx25lxxWriteNoCheck(eFLASH_ID id, uint32_t writeAddr, uint8_t * pWriteBuff, uint16_t size);
void mx25lxxEraseBytes(eFLASH_ID id, uint32_t eraseAddr, uint8_t * pEraseBuff, uint16_t size);
void mx25lxxEraseSector(eFLASH_ID id, uint32_t eraseAddr);
void mx25lxxPowerDown(eFLASH_ID id);
void flashInit(void);
#endif