137 flash存储

#include "bat32g137.h"
#include "EventRecorder.h"              // Keil.ARM Compiler::Compiler:Event Recorder
#include "flash.h"
#include "stdio.h"

// 512字节一个 页面
#define FLASH_TEST_START_ADDR      (8*1024)
 
#define DATA_FLASH_TEST_START_ADDR (0x0500000+512)


static char write_buff[] = {0xAA,0x55,0x12,0x56};
int main(void)
{
	SystemCoreClockUpdate();
	EventRecorderInitialize(0,0);
	EventRecorderStart();
	// flash写入
	EraseSector(FLASH_TEST_START_ADDR);
	ProgramPage(FLASH_TEST_START_ADDR,sizeof(write_buff),(void*)write_buff);
	uint8_t *paddr = (void*)(volatile const uint8_t*)FLASH_TEST_START_ADDR;
	for(char i = 0;i < sizeof(write_buff);i++)
	printf("paddr[%d] = 0x%02x\n",i,paddr[i]);
	
	{
		// dataflash写入
		EraseSector(DATA_FLASH_TEST_START_ADDR);
		ProgramPage(DATA_FLASH_TEST_START_ADDR,sizeof(write_buff),(void*)write_buff);
		uint8_t *paddr = (void*)(volatile const uint8_t*)DATA_FLASH_TEST_START_ADDR;
		for(char i = 0;i < sizeof(write_buff);i++)
		printf("paddr[%d] = 0x%02x\n",i,paddr[i]);
	}
	
	while(1)
	{
		
	}
}

 

测试擦写速度很快只需要4ms.类似的单片机都是几十ms的擦除时间。

特别注意这个是512字节一个页面。操作flash区域和dataflash区域只是地址不同而已其他都一样。flash区域可以执行程序，dataflash不可以执行。