Dear moderators:
I don't know if I should start a new topic about ISP. if it is not proper . you can del the topic.
My bootloader work well when I use atmel-ice, the Led flash about 0.2s,and send a char(0x38) to PC(for debug).
But when the app jump to bootloader (by jump 0x20000),the Led flash about 32~35s, and send a char(0x38) to PC.
The app and bootloader both use internal 32M osc.
Beacause the bootlaoder can send char to PC, only very slow,and I mask other code for debug. I think the clock(OSC) is Ok.
But where is the problem?
APP CODE:
if(EnterISP==true)
{
cli();
asm ("jmp 0x20000");
}
bootloader code:
for(;;)
{
Cycle++;
if((Cycle%10000)==0)
{
WorkLedFlash();
LedFlash();
sendchar('8');
}
//-----------------------------------------------------------
//数据接收解析
//GetSerialData();
//CmdProcess();
//-----------------------------------------------------------
//-----------------------------------------------------------
} // end: for(;;)
