http://www.8051projects.net/ Learn to make simple microcontroller projects, pic, 8051, avr and arm projects. download 8051 projects, tutorials, libraries, sample codes. join the microcontroller discussion forum and ask doubts regarding electronics. the best source for 8051 over internet. en-gb 2009-01-07T22:04:31-08:00 contact@nospam.com hourly 1 2000-01-01T12:00+00:00 http://www.8051projects.net/forum-t5846.html 2009-01-07T22:04:31-08:00 hey guys, i need a help.! i programmed my (only) atmega162 using my small programmer, then i made a mistake and put it wrong in my board the XTAL1 is connected to ground instead of GND SCK is connected to VCC instead of RESET I put it one pin down.. you get it. i didn't suspect there is a problem, but when i want to reprogram it , i was surprised: uisp -dprog=dapa -dlpt=/dev/parport0 Atmel AVR ATmega163 is found. can i just use it, or?? any advice?? http://www.8051projects.net/forum-t5846.html 2009-01-07T22:04:31-08:00 Ajay any controller is recognized from its signature bytes.. it may be possible that there is something wrong internally after you connected it the otherway.try to program it. maybe its possible to use it. just toggle all ports and check on CRO if all pins are working then its fine... I still have no idea.. why its showing ATMega163 http://www.8051projects.net/forum-t5846.html 2009-01-07T22:04:31-08:00 dudu9 hi Ajay: it wasn't showing atmega163 really. it was showing different signatures each time.i tried programing it Reading############################################# | 100% 0.00savrdude: Device signature = 0xffffffavrdude: Yikes! Invalid device signature. Double check connections and try again, or use -F to override this check.when i use -F : it programs the chip , but my MM didn't get anything. i just start to loose my patient with it.. http://www.8051projects.net/forum-t5846.html 2009-01-07T22:04:31-08:00 Ajay I think its gone case now sorry...may god give you strength to bear this pain http://www.8051projects.net/forum-t5846.html 2009-01-07T22:04:31-08:00 dudu9 hey, thanks for the it happens with everyone , thank god we are fine.now i am playing with my mega32 , but i must be carefull - it the one and only now -the proplem is that i am using a cheap programmer and my breadboard so the chip is grasped from here and put over there all the time. http://www.8051projects.net/forum-t5846.html 2009-01-07T22:04:31-08:00 Ajay its better to make a simple test board with all pinouts and stuff.. so you can just connect things with wires. http://www.8051projects.net/forum-t5846.html 2009-01-07T22:04:31-08:00 dudu9 hi ajay:can u give me such a schematic for the board. i need it to be a programmer and a test board in the same time so that i can test my serial, ADC, LCD, etc stuff with it.can i make it in a simple breadboard , i do not like smell of soldering. thanks. http://www.8051projects.net/forum-t5846.html 2009-01-07T22:04:31-08:00 Ajay well you just need to make your board once.. not everytime soldering is good..start your schematic.. will help you as you go forward..