1、板卡配置
注意：使用fat文件系统的时候，必须download进去一个fat系统的镜像 fat.img 0xee0000
注意：需要打开fat宏定义（涉及到底层，必须开，否则无法创建文件）
2、板卡.c 配置
修改分区大小、增加分区
0xee0000 = 16m - 128k - 1m
fat分区需要使用norflash_sfc_dev_ops的文件操作
3、download.bat文件修改
<1>限制ui 文件系统大小
fat_comm.exe -pad-backup2 -force-align-fat -out new_res.bin -image-size 16 -filelist JL sidebar watch -remove-empty -remove-bpb -mark-bad-after 0xee0000 -key %CHIPKEY% -address 0
·res_nor(0 - 0xee0000) res_test(0xee0000 - 0xfe0000) ui_vm(0xfe0000-0x1000000)
·-key %CHIPKEY%：(0 - 0xee0000)此区域加密，代码需要和download.bat文件对应
<2>外部文件烧录到外挂flash（img镜像文件）
packres.exe -n res -o res.bin new_res.bin 0 fat.img 0xee0000 -normal
4、norflash_sfc.c配置
1、norflash/norflash_sfc.c
说明：如果不需要驱动自己处理擦除，可以把宏FLASH_CACHE_ENABLE清零，或者把
norflash_sfc_dev_read()里面调用的fat_sfc_norflash_read()的实参cache填0，
norflash_sfc_dev_write()同理
4、测试demo
外挂flash读写测试代码
/*读写测试代码，放到app_main函数运行*/
/*open设备分区
/*读写的offset偏移地址从0地址开始*/
#define TEST_BUF_SIZE 512
void flash_test(void)
{static void *fd;fd = dev_open("res_test", NULL);if (!fd) {printf("dev open err \n");}printf("flash_test........");u8 *buf = malloc(TEST_BUF_SIZE);memset(buf, 0, TEST_BUF_SIZE);printf("read data test start *******************\n ");dev_bulk_read(fd, buf,0,TEST_BUF_SIZE);put_buf(buf,TEST_BUF_SIZE);//write test dev_ioctl(fd, IOCTL_ERASE_SECTOR, 0);memset(buf, 0, TEST_BUF_SIZE);for( int i = 0; i < TEST_BUF_SIZE; i++ ) {buf[i] = i;}dev_bulk_write(fd, buf, 0,TEST_BUF_SIZE);printf("write data test start >>>>>>>>>>>>>>>>>\n ");dev_bulk_read(fd, buf,0,TEST_BUF_SIZE);put_buf(buf,TEST_BUF_SIZE);free(buf);
}
block擦除测试代码
/block擦除测试代码，按64k擦除，放到app_main函数运行/
/*open设备分区
/*读写的offset偏移地址从0地址开始*/#define TEST_BUF_SIZE 256*1024
void flash_block_test(void)
{static void *fd;fd = dev_open("res_test", NULL);if (!fd) {printf("dev open err \n");}//IOCTL_ERASE_BLOCKfor( int i = 64*1024; i <= 4*64*1024; i= i + 64*1024) {printf("IOCTL_ERASE_BLOCK %d*****************\n ",i);dev_ioctl(fd, IOCTL_ERASE_BLOCK, i);}printf("flash_test........");u8 *buf = malloc(TEST_BUF_SIZE);memset(buf, 0x02, TEST_BUF_SIZE);dev_bulk_write(fd, buf, 0,TEST_BUF_SIZE);put_buf(buf + 256*1023,128);printf("write data test ok *******************\n ");printf("read data test start *******************\n ");dev_bulk_read(fd, buf,256*1023,128);printf("buf[0] = %p buf[1] = %p buf = %p buf+4 = %p",buf[0],&buf[1],buf, (buf + 4));put_buf(buf + 256*1023,128);//IOCTL_ERASE_BLOCKfor( int i = 64*1024; i <= 4*64*1024; i= i + 64*1024) {printf("IOCTL_ERASE_BLOCK %d*****************\n ",i);dev_ioctl(fd, IOCTL_ERASE_BLOCK, i);}printf("IOCTL_ERASE_SECTOR 4096 start >>>>>>>>>>>>>>>>>\n ");memset(buf, 0x58, TEST_BUF_SIZE);dev_bulk_write(fd, buf, 256*1023,256);dev_bulk_read(fd, buf,0,TEST_BUF_SIZE);put_buf(buf + 256*1023,256);dev_close(fd);free(buf);
}
fopen操作文件测试代码
/**/
void fat_nor_rw_test()
{u8*f = fopen("storage/res_test/C/3.txt","w+");if(f)
{ printf("open res_test success");}else{printf("open res_test fail");}printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");int size = flen(f);u8 *temp = zalloc(4096);fread(f,temp,size);printf("file size =%d\n",size);printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");put_buf(temp,512);u8 first = temp[0];memset(temp,first,size);fwrite(f,temp,size);put_buf(temp,512);printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");fclose(f);free(temp);
}
