September 9, 2012 at 3:03 pm #8556
i have another problem with downloading the code in to mc through serial port
when switch on the power supply.then terminal shows the o/p all the 4 cases i.e
1.db9 connector 2&3 pins short
2.max-232 13 &14 pins short.
3.max-232 11&12 pins short.
4.microcontroller 10&11 pins short.
but when i tried to download the code in to the mc.
it is showing reset the device in to isp mode now .
even though after pressing the reset switch also.
please anyone help where is the problem