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sst25v16.c
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sst25v16.c
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/*********************************************************************
* Filename: sst25v16.h
*
* Description: Tihs flie function spi flash block device
* drivie,chip type sst25vf016,user stm32
* hardware resources SPI2 ,
*
* Author: wangzw <[email protected]>
* Created at: 2013-04-26 12:00:00
*
* Modify:
*
*
*
* Copyright (C) 2013 Yuettak Co.,Ltd
********************************************************************/
#include "sst25v16.h"
/*-----------sst25v16 chip command list --------------*/
#define CMD_RDSR 0x05 /* 读状态寄存器 */
#define CMD_WRSR 0x01 /* 写状态寄存器 */
#define CMD_EWSR 0x50 /* 使能写状态寄存器 */
#define CMD_WRDI 0x04 /* 关闭写使能 */
#define CMD_WREN 0x06 /* 打开写使能 */
#define CMD_READ 0x03 /* 读数据 */
#define CMD_FAST_READ 0x0B /* 快速读 */
#define CMD_BP 0x02 /* 字节编程 */
#define CMD_AAIP 0xAD /* 自动地址增量编程 */
#define CMD_ERASE_4K 0x20 /* 扇区擦除:4K */
#define CMD_ERASE_32K 0x52 /* 扇区擦除:32K */
#define CMD_ERASE_64K 0xD8 /* 扇区擦除:64K */
#define CMD_ERASE_full 0xC7 /* 全片擦除 */
#define CMD_JEDEC_ID 0x9F /* 读 JEDEC_ID */
#define CMD_EBSY 0x70 /* 打开SO忙输出指示 */
#define CMD_DBSY 0x80 /* 关闭SO忙输出指示 */
/* use auxiliary data */
#define WIP_Flag 0x01 //Write In Progress (WIP) flag
#define Dummy_Byte 0xFF //moke needful read clock
/* flash device */
struct flash_device
{
struct rt_device parent; /**< RT-Thread device struct */
struct rt_device_blk_geometry geometry; /**< sector size, sector count */
struct rt_spi_device * spi_device; /**< SPI interface */
u32 max_clock; /**< MAX SPI clock */
struct rt_mutex lock; /* Flash mutex */
};
/*spi device*/
struct flash_device sst25v16;
/*******************************************************************************
* Function Name : rt_hw_spi_init
* Description : register spi bus and register spi cs device
*
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void rt_hw_spi_init(void)
{
/* initialization SPI Bus device */
{
GPIO_InitTypeDef gpio_initstructure;
#ifdef USE_WILDFIRE_TEST
RCC_APB2PeriphClockCmd(GPIO_RCC | SPI2_CLOCK,ENABLE);
#else
RCC_APB1PeriphClockCmd(SPI2_CLOCK ,ENABLE);
RCC_APB2PeriphClockCmd(GPIO_RCC ,ENABLE);
#endif
gpio_initstructure.GPIO_Mode = GPIO_Mode_AF_PP;
gpio_initstructure.GPIO_Speed = GPIO_Speed_50MHz;
gpio_initstructure.GPIO_Pin = SPI2_MISO_PIN | SPI2_MOSI_PIN | SPI2_SCK_PIN;
GPIO_Init(SPI2_GPIO_PORT,&gpio_initstructure);
/* register spi bus device */
stm32_spi_register(SPI_PORT,&stm32_spi_bus_2,SPI2_BUS_NAME);
}
/* initialization SPI CS device */
{
static struct rt_spi_device spi_device;
static struct stm32_spi_cs spi_cs;
GPIO_InitTypeDef gpio_initstructure;
/* configure CS clock port pin */
spi_cs.GPIOx = SPI2_CS1_PORT;
spi_cs.GPIO_Pin = SPI2_CS1_PIN;
RCC_APB2PeriphClockCmd(SPI2_CS1_CLOCK, ENABLE);
gpio_initstructure.GPIO_Mode = GPIO_Mode_Out_PP;
gpio_initstructure.GPIO_Pin = spi_cs.GPIO_Pin;
gpio_initstructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_SetBits(spi_cs.GPIOx, spi_cs.GPIO_Pin);
GPIO_Init(spi_cs.GPIOx, &gpio_initstructure);
/* add cs devie go to spi bus devie */
rt_spi_bus_attach_device(&spi_device,SPI2_CS1_NAME1, SPI2_BUS_NAME, (void*)&spi_cs);
}
}
/*-------------flash chip device drive function -------------*/
/*******************************************************************************
* Function Name : spi_flash_write_read_byte
* Description : write and read flash one byte
*
* Input : device :spi device data :input flash of data
* Output : read output data
* Return : None
*******************************************************************************/
static u8 spi_flash_write_read_byte(struct rt_spi_device *device,const u8 data)
{
u8 value;
struct rt_spi_message message;
message.length = 1;
message.recv_buf = &value;
message.send_buf = &data;
message.cs_release = 0;
message.cs_take = 0;
message.next = RT_NULL;
rt_spi_transfer_message(device,&message);
return value;
}
/*******************************************************************************
* Function Name : spi_flash_wait_write_end
* Description :flash private function busy check fun
*
* Input : device :spi device
* Output : None
* Return : None
*******************************************************************************/
static void spi_flash_wait_write_end(struct rt_spi_device *device)
{
u8 flash_status;
rt_spi_take(device);
spi_flash_write_read_byte(device,CMD_RDSR);
do
{
flash_status = spi_flash_write_read_byte(device,Dummy_Byte);
}
while ((flash_status& WIP_Flag) == SET);
rt_spi_release(device);
}
/*******************************************************************************
* Function Name : spi_flash_write_status_enable
* Description :flash private function enable write status register
*
* Input : device :spi device
* Output : None
* Return : None
*******************************************************************************/
static void spi_flash_write_status_enable(struct rt_spi_device *device)
{
rt_spi_take(device);
spi_flash_write_read_byte(device,CMD_EWSR);
rt_spi_release(device);
rt_spi_take(device);
spi_flash_write_read_byte(device,CMD_WRSR);
spi_flash_write_read_byte(device , 0x00);
rt_spi_release(device);
spi_flash_wait_write_end(device);
}
/*******************************************************************************
* Function Name : spi_flash_write_enable
* Description :flash private function enable write data fun
*
* Input : device :spi device
* Output : None
* Return : None
*******************************************************************************/
static void spi_flash_write_enable(struct rt_spi_device *device )
{
spi_flash_write_status_enable(device);
rt_spi_take(device);
spi_flash_write_read_byte(device,CMD_WREN);
rt_spi_release(device);
spi_flash_wait_write_end(device);
}
/*******************************************************************************
* Function Name : spi_flash_write_disable
* Description :flash private function disable write data fun
*
* Input : device :spi device
* Output : None
* Return : None
*******************************************************************************/
static void spi_flash_write_disable(struct rt_spi_device *device)
{
spi_flash_write_status_enable(device);
rt_spi_take(device);
spi_flash_write_read_byte(device,CMD_WRDI);
rt_spi_release(device);
spi_flash_wait_write_end(device);
}
/*******************************************************************************
* Function Name : spi_flash_sector_erase
* Description :flash private function erase 4k sector
*
* Input : device :spi device
* Output : None
* Return : None
*******************************************************************************/
void spi_flash_sector_erase(struct rt_spi_device *device,u32 SectorAddr)
{
spi_flash_write_enable(device);
rt_spi_take(device);
spi_flash_write_read_byte(device,CMD_ERASE_4K);
spi_flash_write_read_byte(device,(SectorAddr & 0xFF0000) >> 16);
spi_flash_write_read_byte(device,(SectorAddr & 0xFF00) >> 8);
spi_flash_write_read_byte(device,SectorAddr & 0xFF);
rt_spi_release(device);
spi_flash_wait_write_end(device);
}
/*******************************************************************************
* Function Name : spi_flash_chip_erase
* Description :flash private function erase Chip Integration plan
*
* Input : device :spi device
* Output : None
* Return : None
*******************************************************************************/
static void spi_flash_chip_erase(struct rt_spi_device *device)
{
spi_flash_write_enable(device);
rt_spi_take(device);
spi_flash_write_read_byte(device,CMD_ERASE_full);
rt_spi_release(device);
spi_flash_wait_write_end(device);
}
/*******************************************************************************
* Function Name : spi_flash_buffer_write
* Description :flash private function write sst25vf016 data
*
* Input : device : spi device;
* pBuffer : data buffer;
* WriteAddr: statr write pos;
* NumByteToWrite: write data size
* Output : None
* Return : None
*******************************************************************************/
static void spi_flash_buffer_write(struct rt_spi_device *device,const u8* pBuffer, u32 WriteAddr, u16 NumByteToWrite)
{
u32 index;
WriteAddr &= ~0xFFF; // page size = 4096byte
spi_flash_sector_erase(device,WriteAddr);
spi_flash_write_enable(device);
rt_spi_take(device);
spi_flash_write_read_byte(device, CMD_AAIP );
spi_flash_write_read_byte(device, WriteAddr>>16 );
spi_flash_write_read_byte(device, WriteAddr>>8 );
spi_flash_write_read_byte(device, WriteAddr );
spi_flash_write_read_byte(device,*pBuffer++ );
spi_flash_write_read_byte(device,*pBuffer++ );
NumByteToWrite -= 2;
rt_spi_release(device);
spi_flash_wait_write_end(device);
for(index=0; index < NumByteToWrite/2; index++)
{
rt_spi_take(device);
spi_flash_write_read_byte(device, CMD_AAIP );
spi_flash_write_read_byte(device, *pBuffer++ );
spi_flash_write_read_byte(device, *pBuffer++ );
rt_spi_release(device);
spi_flash_wait_write_end(device);
}
spi_flash_write_disable(device);
}
static void spi_flash_buffer_read(struct rt_spi_device *device,u8* pBuffer, u32 ReadAddr, u16 NumByteToRead)
{
spi_flash_write_disable(device);
rt_spi_take(device);
spi_flash_write_read_byte(device,CMD_FAST_READ);
spi_flash_write_read_byte(device,(ReadAddr & 0x00FF0000) >> 16);
spi_flash_write_read_byte(device,(ReadAddr & 0x0000FF00) >> 8);
spi_flash_write_read_byte(device, ReadAddr & 0x000000FF);
spi_flash_write_read_byte(device,0);
while (NumByteToRead--)
{
*pBuffer = spi_flash_write_read_byte(device,Dummy_Byte);
pBuffer++;
}
rt_spi_release(device);
}
/**************************************** spi flash resiger function **********************************/
void rt_flash_lock(struct flash_device* flash_dev)
{
rt_mutex_take(&(flash_dev->lock),RT_WAITING_FOREVER);
}
void rt_flash_unlock(struct flash_device* flash_dev)
{
rt_mutex_release(&(flash_dev->lock));
}
static rt_err_t rt_flash_init(rt_device_t dev)
{
struct flash_device* flash = (struct flash_device *)dev;
if(flash->spi_device->bus->owner != flash->spi_device)
{
/* current configuration spi bus */
flash->spi_device->bus->ops->configure(flash->spi_device,&flash->spi_device->config);
}
return RT_EOK;
}
static rt_err_t rt_flash_open(rt_device_t dev, rt_uint16_t oflag)
{
return RT_EOK;
}
static rt_err_t rt_flash_close(rt_device_t dev)
{
return RT_EOK;
}
static rt_size_t rt_flash_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
{
struct flash_device* flash = (struct flash_device *)dev;
RT_ASSERT(flash != RT_NULL);
rt_flash_lock(flash);
spi_flash_buffer_read(flash->spi_device,buffer,pos*4096,size*4096);
rt_flash_unlock(flash);
return size;
}
static rt_size_t rt_flash_write(rt_device_t dev, rt_off_t pos,const void* buffer, rt_size_t size)
{
struct flash_device* flash = (struct flash_device *)dev;
RT_ASSERT(flash != RT_NULL);
rt_flash_lock(flash);
spi_flash_buffer_write(flash->spi_device,buffer,pos*4096,size*4096);
rt_flash_unlock(flash);
return size;
}
static rt_err_t rt_flash_control(rt_device_t dev, rt_uint8_t cmd, void *args)
{
struct flash_device* msd = (struct flash_device*)dev;
RT_ASSERT(dev != RT_NULL);
if (cmd == RT_DEVICE_CTRL_BLK_GETGEOME)
{
struct rt_device_blk_geometry *geometry;
geometry = (struct rt_device_blk_geometry *)args;
if (geometry == RT_NULL) return -RT_ERROR;
geometry->bytes_per_sector = msd->geometry.bytes_per_sector;
geometry->block_size = msd->geometry.block_size;
geometry->sector_count = msd->geometry.sector_count;
}
return RT_EOK;
}
rt_err_t rt_flash_register(const char * flash_device_name, const char * spi_device_name)
{
rt_err_t result = RT_EOK;
struct rt_spi_device * spi_device;
struct rt_spi_configuration spi2_configuer=
{
RT_SPI_MODE_MASK, //spi clock and data mode set
8, //data width
0, //reserved
36000000/2 //MAX frequency 18MHz
};
rt_memset(&sst25v16, 0, sizeof(sst25v16));
result = rt_mutex_init(&sst25v16.lock,"flash",RT_IPC_FLAG_FIFO);
if(result != RT_EOK)
{
#ifdef RT_USING_FINSH
rt_kprintf("flash mutex init fail\n", spi_device_name);
#endif
return -RT_ENOSYS;
}
spi_device = (struct rt_spi_device *)rt_device_find(spi_device_name);
if(spi_device == RT_NULL)
{
#ifdef RT_USING_FINSH
rt_kprintf("spi device %s not found!\n", spi_device_name);
#endif
return -RT_ENOSYS;
}
sst25v16.spi_device = spi_device;
sst25v16.max_clock = 18000000;
sst25v16.spi_device->config = spi2_configuer;
/* register flash device */
sst25v16.parent.type = RT_Device_Class_Block;
sst25v16.geometry.bytes_per_sector = 4096;
sst25v16.geometry.sector_count = (512 - 150);//flash set apart 600kbyte
sst25v16.geometry.block_size = 4096;
sst25v16.parent.init = rt_flash_init;
sst25v16.parent.open = rt_flash_open;
sst25v16.parent.close = rt_flash_close;
sst25v16.parent.read = rt_flash_read;
sst25v16.parent.write = rt_flash_write;
sst25v16.parent.control = rt_flash_control;
/* no private, no callback */
sst25v16.parent.user_data = RT_NULL;
sst25v16.parent.rx_indicate = RT_NULL;
sst25v16.parent.tx_complete = RT_NULL;
result = rt_device_register(&sst25v16.parent, flash_device_name,
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_STANDALONE | RT_DEVICE_FLAG_DMA_RX |RT_DEVICE_FLAG_DMA_TX);
return result;
}
void rt_hw_spi_flash_init(void)
{
rt_hw_spi_init();
rt_flash_register(FLASH1_DEVICE_NAME,SPI2_CS1_NAME1);
}
#ifdef RT_USING_FINSH
#include <finsh.h>
void flashread(u32 addr,u32 size)
{
u32 i = addr;
u8 dat;
for(i = addr;i < size;i++)
{
spi_flash_buffer_read(sst25v16.spi_device,&dat,i,1);
rt_kprintf("%d = %x ",i,dat);
if(i % 10 == 0)
{
rt_kprintf("\n");
}
}
}
FINSH_FUNCTION_EXPORT(flashread,flashread(start_addr, end_addr) --Read_Hex);
void flashreadc(u32 addr,u32 size)
{
u32 i = addr;
u8 dat;
for(i = addr;i < size;i++)
{
spi_flash_buffer_read(sst25v16.spi_device,&dat,i,1);
rt_kprintf("%c",dat);
}
}
FINSH_FUNCTION_EXPORT(flashreadc,flashreadc(start_addr, end_addr)-- Read_String);
void flashsectore(u32 size)
{
spi_flash_sector_erase(sst25v16.spi_device,size);
}
FINSH_FUNCTION_EXPORT(flashsectore,flashsectore(Sectore_Addr)--Sectore_Erase);
void flashwrite(u32 addr,u8 *data, u32 size)
{
spi_flash_buffer_write(sst25v16.spi_device,data,addr,size);
}
FINSH_FUNCTION_EXPORT(flashwrite,flashwrite(addr,data,size)--Sectore_Erase);
void echip()
{
spi_flash_chip_erase(sst25v16.spi_device);
}
FINSH_FUNCTION_EXPORT(echip,echip()--chip erase);
#endif