flash.c

项目是为日本瑞萨工作所做的BAKE炉温控系统 整个文件夹包括设计文档

#include "flash.h"
#include "GP32C.h"
#include <string.h>
static void 	Delay1(void);
static void 	Delay2(void);
static void 	DoEraseFlash(void);
static void 	DoWriteFlash(void);
static void 	EraseFlash_End(void);
static void 	WriteFlash_End(void);
UINT8 	PrgIOfRam[];
static UINT16 	g_bBegin, g_bEnd;
static UINT8 	*g_pAddress;

static UINT8 	*g_pData;
static UINT8 	g_nNum;

void	SetProtectAddress(UINT8 address)
{
	FLBPR = address;
}
void	EraseFlash(UINT8 *address)
{
	g_pAddress = address;

	asm("ldhx #_DoEraseFlash");
	asm("sthx _g_bBegin");
	asm("ldhx #_EraseFlash_End");
	asm("sthx _g_bEnd");
	
	
	
	memcpy((void *)PrgIOfRam, (void *)g_bBegin, g_bEnd - g_bBegin);
	

	asm("ldhx #_PrgIOfRam");
	asm("jsr ,x");
}
static void 	DoEraseFlash(void)
{
	UINT8 i;
	FLCR = 0b00000010;
	i = FLBPR;
	*((volatile UINT8*)g_pAddress) = 68;
	asm("bsr _Delay1");
	FLCR = 0b00001010;
	asm("bsr _Delay1");
	FLCR = 0b00001000;
	asm("bsr _Delay1");
	FLCR = 0b00000000;	
	asm("bsr _Delay1");
}
static void Delay1(void)
{
	UINT8 i;
	for(i = 0; i < 10; ++i);
}
static void EraseFlash_End(void)
{
}
void	WriteFlash(UINT8 *address, UINT8 *data, int n)
{
	g_pAddress = address;
	g_pData = data;
	g_nNum = n;

	asm("ldhx #_DoWriteFlash");
	asm("sthx _g_bBegin");
	asm("ldhx #_WriteFlash_End");
	asm("sthx _g_bEnd");
	
	memcpy((void *)PrgIOfRam, (void *)g_bBegin, g_bEnd - g_bBegin);
	
	
		
	asm("ldhx #_PrgIOfRam");
	asm("jsr ,x");
	
	
	
}
static void 	DoWriteFlash(void)
{
	UINT8 i, j;
	FLCR = 0b00000001;
	j = FLBPR;
	*((volatile UINT8*)g_pAddress) = 68;
	asm("bsr _Delay2");
	FLCR = 0b00001001;
	asm("bsr _Delay2");
	for(j = 0 ;j < g_nNum; ++j)
	{
		*((volatile UINT8*)g_pAddress + j) = g_pData[j];
		for(i = 0; i < 30; ++i);
	}
	FLCR = 0b00001000;
	asm("bsr _Delay2");
	FLCR = 0b00000000;	
	asm("bsr _Delay2");
	
}
static void Delay2(void)
{
	UINT8 i;
	for(i = 0; i < 10; ++i);
}
static void WriteFlash_End(void)
{
}