这篇文章写作QQ空间的,但是那个圈子没什么人懂,还是在这再写一遍
纠结很长时间的IAP终于解决了,写在此处备份一下,为要做IAP的省很大部分精力,升级不带Ucos的程序很容易,但是带了Ucos、EmWin等复杂的应用程序后跳转失败等,经过一番排查之后发现是堆栈地址不对,跑到了SDRAM的地址0xA02C4738中去了,至于为什么我也不知道,勾选了Keil中Options for Target中的Linker下面的Use Memory Layout form Target Dialog 后使用更据我们前面设定的Target中的Irom Iram等乱七八糟的分散加载而自动生成的SCT文件堆栈地址跑到0xA02XXXXX中,如果不把上述复杂程序做成APP的话其堆栈地址在片内RAM0x10000000地址开始处,而做成APP后点了,虽然我把SCT文件改成如下代码:
LR_IROM1 0x0000A000 0x00045FFF { ; load region size_region
ER_IROM1 0x0000A000 0x00045FFF { ; load address = execution address
*.o (RESET, +First)
*(InRoot$$Sections)
.ANY (+RO)
}
RW_IRAM1 0x10000000 0x00010000 { ; RW data
.ANY (+RW +ZI)
}
RW_RAM1 0xA0000000 UNINIT 0x02000000 { ; RW data
* (VRAM, GUI_RAM, GUIDEMO_STACK)
}
}
已经跟原来的Project.sct文件一样(不选Use Memory Layout form Target Dialog后 ),但是是不行的,此原因不知道为什么。 反正我们现在不点Use
Memory Layout form Target Dialog ,并且打开Project.sct文件改成ROM从0xA000开始,IARM从0x10000000大小0x10000,RAM 0xA0000000 大小0x2000000(32MBSDRAM),即上述一段代码后就可以了。
上述解释了为什么跳转到IAP后运行不了的问题,也是各大论坛上询问无果的问题。
具体的IAP实现代码如下:
Bootloader部分:这段代码比较简单,也不要对Keil做特别的设置,就一普通工程
跳转部分和MAIN
01
__asm
void
JMP_Boot(
uint32_t address )
02
{
03
LDR
SP, [R0] ;Load
new
stack
pointer address
04
LDR
PC, [R0, #4] ;Load
new
program
counter address
05
}
06
void
Boot(
void
)
07
{
08
SCB->VTOR
= APP_START_SECTOR & 0x1FFFFF80;
09
JMP_Boot(APP_START_SECTOR);
10
}
11
int
main(
void
)
12
{
13
CLKPWR_ConfigPPWR(CLKPWR_PCONP_PCGPIO,
ENABLE);
14
lpc1788_Uart_Init(0);
printf
(
"uart0
init success!
"
);
15
lpc1788_SDRAM_Init();
16
lpc1788_Lcd_Init();
17
LCD_test();
18
SysTick_Init();
19
exfuns_init();
20
fs_test();
21
if
(updata_num==1)
{LCD_ShowString(10,218,608,16,16,
"Updata
APP SUECCED!"
);updata_num=0;Boot();}
22
else
{LCD_ShowString(10,218,608,16,16,
"Have
not Updata APP!"
);
Boot();}
23
while
(1);
24
}
SD卡升级APP部分:
void fs_test(void)
{
FRESULT ceshi;
char folder[255] = "";
uint32_t addr,ii;
uint32_t u32Status;
ceshi = (FRESULT)SD_Init();//³õʼ»¯SD¿¨£¬²¢°Ñ·µ»ØÖµ´«µÝ¸øceshi
if(ceshi == FALSE)
{
printf("sd init error.
");
LCD_ShowString(10,26,200,16,16,"Has no SD found!");
}
else
{
LCD_ShowString(10,26,608,16,16,"Press any key to updata
system in 3S:");
WHITE);LCD_ShowString(320,26,200,16,16,"04S");Delay(1000);if(flag==1){flag=0;goto updata_APP;}
LCD_FillRectangle(LCD_PANEL_UPPER,320,352,26,74,WHITE);LCD_ShowString(320,26,200,16,16,"03S");Delay(1000);if(flag==1){flag=0;goto
updata_APP;}
LCD_FillRectangle(LCD_PANEL_UPPER,320,352,26,74,WHITE);LCD_ShowString(320,26,200,16,16,"02S");Delay(1000);if(flag==1){flag=0;goto
updata_APP;}
LCD_FillRectangle(LCD_PANEL_UPPER,320,352,26,74,WHITE);LCD_ShowString(320,26,200,16,16,"01S");Delay(1000);if(flag==1){flag=0;goto
updata_APP;}
LCD_FillRectangle(LCD_PANEL_UPPER,320,352,26,74,WHITE);LCD_ShowString(320,26,200,16,16,"00S");Delay(1000);if(flag==1){flag=0;goto
updata_APP;}
SysTick->CTRL=0;//¹Øµôϵͳ¶¨Ê±Æ÷·ÀÖ¹Ó°ÏìºóÃæ²Á³ý²Ù×÷
return;
updata_APP:
SysTick->CTRL=0;
updata_num=1;
SystemCoreClockUpdate();
LCD_ShowString(10,42,200,16,16,"UpdataAPP:");LCD_FillRectangle(LCD_PANEL_UPPER,176,376,42,58,skyblue);
ceshi = f_mount(&fs,"0:", 1);
if(ceshi != FR_OK){printf("f_mount error = %d
",ceshi);}
ceshi=f_open (&file, "UNIGBK.BIN", FA_READ); RES_FALT(ceshi);
SIZE_UNIGBK=file.fsize;
printf("
UNIGBK.BIN ÎļþËùÕ¼´óС£º%d×Ö½Ú
",file.fsize);
ceshi=f_read(&file, UNIGBK, SIZE_UNIGBK, &br);RES_FALT(ceshi);
printf("
br 掙朧%d
",br);printf("
");
f_close(&file);br=0;//////////////////////////////////////////////¹Ø±ÕÎļþ
LCD_FillRectangle (LCD_PANEL_UPPER,176,186,42,58,NavyBlue);
scan_files(folder);//±éÀúSD¿¨Îļþ
LCD_FillRectangle (LCD_PANEL_UPPER,186,190,42,58,NavyBlue);
__disable_irq();
if ((u32IAP_PrepareSectors(10, 23) == IAP_STA_CMD_SUCCESS)
&&(u32IAP_EraseSectors(10,23)==IAP_STA_CMD_SUCCESS))
{LCD_ShowString(10,58,200,16,16,"Erase Done!"); LCD_FillRectangle
(LCD_PANEL_UPPER,190,200,42,58,NavyBlue);}
else {LCD_ShowString(10,58,200,16,16,"Erase FAILED!");return;}
__enable_irq();
ceshi=f_open (&file, "Timer.bin", FA_READ); RES_FALT(ceshi);
printf("
Application.binÎļþËùÕ¼´óС£º%d×Ö½Ú
",file.fsize);addr=0;
for(ii=0;ii<((file.fsize)/512+1);ii++)
{
ceshi = f_read(&file, APP_CODE_ADDR, 512, &br); RES_FALT(ceshi);
__disable_irq();//NVIC_DisableIRQ(DMA_IRQn);
if ((ceshi == FR_OK) || (br == 512))
{
printf("
%d,%d ",br,ii);
u32Status=u32IAP_PrepareSectors(10, 23);
printf(" PrepareSectors:%d ",u32Status);
u32Status=u32IAP_CopyRAMToFlash(APP_START_SECTOR+addr,(uint32_t)APP_CODE_ADDR,512);printf("
CopyRAMToFlash:%d
",u32Status);
addr += 512;
LCD_FillRectangle (LCD_PANEL_UPPER,200,200+ii*176/((file.fsize)/512),42,58,NavyBlue);
}
__enable_irq();//NVIC_EnableIRQ(DMA_IRQn);
}f_close(&file);br=0;
//SysTick_Init();NVIC_EnableIRQ(UART0_IRQn);
NVIC_DisableIRQ(MCI_IRQn);
__disable_irq();
}