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/********************************** (C) COPYRIGHT *******************************
* File Name : CH57x_flash.c
* Author : WCH
* Version : V1.1
* Date : 2020/03/20
* Description :
*******************************************************************************/
/******************************************************************************/
/* 头文件包含 */
#include "CH57x_common.h"
/* 操作Flash的保护状态标志 */
#define CODEFLASH_SAFE_FLAG1 0x57
#define CODEFLASH_SAFE_FLAG2 0xA8
/* 操作Flash的保护状态变量 */
unsigned char codeflash_access_flag1 = 0x0;
unsigned char codeflash_access_flag2 = 0x0;
/*******************************************************************************
* Function Name : GetUniqueID
* Description : 获取芯片唯一ID，小端模式，6B-ID， 2B-CKS
* Input : buf: 存储8字节，前6字节（小端）ID，后2字节（小端）校验和
* Return : None
*******************************************************************************/
void GetUniqueID(PUINT8 buf)
{
PUINT8 pID;
UINT8 i;
pID = (PUINT8)ROM_UUID_ADDR;
for(i=0; i<8; i++) *buf++ = *pID++;
}
/*******************************************************************************
* Function Name : GetMACAddress
* Description : 获取网络MAC，小端模式，6B-MAC
* Input : buf: 存储6字节，6字节（小端）物理 MAC
* Return : None
*******************************************************************************/
void GetMACAddress(PUINT8 buf)
{
PUINT8 pMAC;
UINT8 i;
pMAC = (PUINT8)ROM_MAC_ADDR;
for(i=0; i<6; i++) *buf++ = *pMAC++;
}
/*******************************************************************************
* Function Name : FlashBlockErase
* Description : Flash 块擦除，一次擦除512B
* Input : addr: 32位地址，需要512对齐
* codeflash: startAddr - 0x00000000 size - 0x3E800
* dataflash: startAddr - 0x3E800(DATA_FLASH_ADDR) size - 0x0800(DATA_FLASH_SIZE)
* Return : 0 - 成功，其他 - 错误
*******************************************************************************/
UINT8 FlashBlockErase(UINT32 addr)
{
UINT8 status = 0;
volatile UINT8 op_step;
if( addr & (0x200-1) ) return 1; //地址不对齐
op_step = 0x11;
codeflash_access_flag1 = 0;
codeflash_access_flag2 = 0;
R8_FLASH_PROTECT = RB_ROM_WE_MUST_10;
//开启电压监控中断
op_step += 0x11;
if((R8_BAT_DET_CTRL & 0x0F) != 0x0D) PowerMonitor( ENABLE );
op_step += 0x11;
if((R8_BAT_STATUS & 0x03) != 0x00) return 2; //电源电压偏低，Flash不允许操作
op_step += 0x11;
if(((R8_BAT_STATUS & 0x03) == 0x00)
&&(op_step == 0x44))
{
codeflash_access_flag1 = CODEFLASH_SAFE_FLAG1;
}
op_step += 0x11;
if(((R8_BAT_STATUS & 0x03) == 0x00)
&&(op_step == 0x55)
&&(codeflash_access_flag1 == CODEFLASH_SAFE_FLAG1))
{
codeflash_access_flag2 = CODEFLASH_SAFE_FLAG2;
}
op_step += 0x11;
if((codeflash_access_flag1 == CODEFLASH_SAFE_FLAG1)
&&(codeflash_access_flag2 == CODEFLASH_SAFE_FLAG2)
&&(op_step == 0x66))
{
R32_FLASH_ADDR = addr;
if( addr < DATA_FLASH_ADDR ) R8_FLASH_PROTECT = RB_ROM_WE_MUST_10|RB_ROM_CODE_WE; // Codefalsh区
else R8_FLASH_PROTECT = RB_ROM_WE_MUST_10|RB_ROM_DATA_WE; // datafalsh区
}
op_step += 0x11;
/* 判断操作Flash的保护状态标志 */
if((codeflash_access_flag1 == CODEFLASH_SAFE_FLAG1)
&&(codeflash_access_flag2 == CODEFLASH_SAFE_FLAG2)
&&(op_step == 0x77))
{
R8_FLASH_COMMAND = ROM_CMD_ERASE;
status = (unsigned char)(R16_FLASH_STATUS & 0xff);
}
op_step = 0x00;
codeflash_access_flag1 = 0x00;
codeflash_access_flag2 = 0x00;
R8_FLASH_PROTECT = RB_ROM_WE_MUST_10; // LOCK
if( status != RB_ROM_ADDR_OK ) return 3; //操作失败
return 0;
}
/*******************************************************************************
* Function Name : FlashWriteDW
* Description : Flash 双字写，地址需4字节对齐
* Input : addr: 32位地址，需要4对齐
* codeflash: startAddr - 0x00000000 size - 0x3E800
* dataflash: startAddr - 0x3E800(DATA_FLASH_ADDR) size - 0x0800(DATA_FLASH_SIZE)
dat: 32位写入数据
* Return : FAILED - 错误
SUCCESS - 成功
*******************************************************************************/
UINT8 FlashWriteDW(UINT32 addr, UINT32 dat)
{
UINT32 add = addr;
UINT32 val = dat;
UINT8 status = 0;
volatile UINT8 op_step;
if( addr & (4-1) ) return 1; //地址不对齐
op_step = 0x11;
codeflash_access_flag1 = 0;
codeflash_access_flag2 = 0;
R8_FLASH_PROTECT = RB_ROM_WE_MUST_10;
//开启电压监控中断
op_step += 0x11;
if((R8_BAT_DET_CTRL & 0x0F) != 0x0D) PowerMonitor( ENABLE );
op_step += 0x11;
if((R8_BAT_STATUS & 0x03) != 0x00) return 2; //电源电压偏低，Flash不允许操作
op_step += 0x11;
if(((R8_BAT_STATUS & 0x01) == 0x00)
&&(op_step == 0x44))
{
codeflash_access_flag1 = CODEFLASH_SAFE_FLAG1;
}
op_step += 0x11;
if(((R8_BAT_STATUS & 0x01) == 0x00)
&&(op_step == 0x55)
&&(codeflash_access_flag1 == CODEFLASH_SAFE_FLAG1))
{
codeflash_access_flag2 = CODEFLASH_SAFE_FLAG2;
}
op_step += 0x11;
if((codeflash_access_flag1 == CODEFLASH_SAFE_FLAG1)
&&(codeflash_access_flag2 == CODEFLASH_SAFE_FLAG2)
&&(op_step == 0x66))
{
if( addr < DATA_FLASH_ADDR ) R8_FLASH_PROTECT = RB_ROM_WE_MUST_10|RB_ROM_CODE_WE; // Codefalsh区
else R8_FLASH_PROTECT = RB_ROM_WE_MUST_10|RB_ROM_DATA_WE; // datafalsh区
}
op_step += 0x11;
/* 判断OTA操作Flash的保护状态标志 */
if((codeflash_access_flag1==CODEFLASH_SAFE_FLAG1)
&&(codeflash_access_flag2==CODEFLASH_SAFE_FLAG2)
&&(op_step == 0x77))
{
R32_FLASH_ADDR = add;
R32_FLASH_DATA = val;
R8_FLASH_COMMAND = ROM_CMD_PROG;
status = (unsigned char)(R16_FLASH_STATUS & 0xff);
}
op_step = 0x00;
codeflash_access_flag1 = 0x00;
codeflash_access_flag2 = 0x00;
R8_FLASH_PROTECT = RB_ROM_WE_MUST_10;
if( status != RB_ROM_ADDR_OK ) return 3; //操作失败
return 0;
}
/*******************************************************************************
* Function Name : FlashWriteBuf
* Description : Flash 连续多个双字写入
* Input : addr: 32位地址，需要4对齐
* codeflash: startAddr - 0x00000000 size - 0x3E800
* dataflash: startAddr - 0x3E800(DATA_FLASH_ADDR) size - 0x0800(DATA_FLASH_SIZE)
* pdat: 待写入数据缓存区首地址
* len: 待写入数据字节长度
* Return : 0 - 成功，其他 - 错误
*******************************************************************************/
UINT8 FlashWriteBuf(UINT32 addr, PUINT32 pdat, UINT16 len)
{
UINT32 add = addr;
PUINT32 p32 = pdat;
UINT8 status = 0;
UINT16 i;
volatile UINT8 op_step;
if( addr & (4-1) ) return 1; //地址不对齐
op_step = 0x11;
codeflash_access_flag1 = 0;
codeflash_access_flag2 = 0;
R8_FLASH_PROTECT = RB_ROM_WE_MUST_10;
//开启电压监控中断
op_step += 0x11;
if((R8_BAT_DET_CTRL & 0x0F) != 0x0D) PowerMonitor( ENABLE );
op_step += 0x11;
if((R8_BAT_STATUS & 0x03) != 0x00) return 2; //电源电压偏低，Flash不允许操作
op_step += 0x11;
if(((R8_BAT_STATUS & 0x01) == 0x00)
&&(op_step == 0x44))
{
codeflash_access_flag1 = CODEFLASH_SAFE_FLAG1;
}
op_step += 0x11;
if(((R8_BAT_STATUS & 0x01) == 0x00)
&&(op_step == 0x55)
&&(codeflash_access_flag1 == CODEFLASH_SAFE_FLAG1))
{
codeflash_access_flag2 = CODEFLASH_SAFE_FLAG2;
}
op_step += 0x11;
if((codeflash_access_flag1 == CODEFLASH_SAFE_FLAG1)
&&(codeflash_access_flag2 == CODEFLASH_SAFE_FLAG2)
&&(op_step == 0x66))
{
if( addr < DATA_FLASH_ADDR ) R8_FLASH_PROTECT = RB_ROM_WE_MUST_10|RB_ROM_CODE_WE; // Codefalsh区
else R8_FLASH_PROTECT = RB_ROM_WE_MUST_10|RB_ROM_DATA_WE; // datafalsh区
}
op_step += 0x11;
/* 判断OTA操作Flash的保护状态标志 */
if((codeflash_access_flag1==CODEFLASH_SAFE_FLAG1)
&&(codeflash_access_flag2==CODEFLASH_SAFE_FLAG2)
&&(op_step == 0x77))
{
for(i=0; i<len; i+=4)
{
R32_FLASH_ADDR = add;
R32_FLASH_DATA = *p32++;
R8_FLASH_COMMAND = ROM_CMD_PROG;
add += 4;
//status = R8_FLASH_STATUS;
status = (unsigned char)(R16_FLASH_STATUS & 0xff);
if( status != RB_ROM_ADDR_OK ) break;
}
}
op_step = 0x00;
codeflash_access_flag1 = 0x00;
codeflash_access_flag2 = 0x00;
R8_FLASH_PROTECT = RB_ROM_WE_MUST_10;
if( status != RB_ROM_ADDR_OK ) return 3; //操作失败
return 0;
}
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