arm的在线升级程序int main(void)
{
u16 tmp;
Init_All_Periph();
UserProgram = (void (*)()) (0x08004131);
for(tmp=0;tmp<1024;tmp++)DATA.u_int[tmp]=(u16)0xFFFF;
if(BKP_ReadBackupRegister(BKP_DR1)==(u16)0x0000)(*UserProgram)();
else if(BKP_ReadBackupRegister(BKP_DR1)==(u16)0x0690)
{
up_data=1;
baud
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