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. Thu, 20 Nov 2008 19:56:18 -0800 http://backend.userland.com/rss092 i am using a atmega 16L mc. i did the coding in winavr(latest edition). also i am using a spi flash programmer 3.7. it detects the mc but gives an err <noauthor@nospam.com> http://www.8051projects.net/forum-t10215.html hi rahul,from ur post i feel u r not getting any problem with ur compiling but the problem lies in ur programmer hardware.check first if it reads/writ pdi33<islurpundalik@nospam.com> http://www.8051projects.net/forum-t10215.html spi flash programmer detects the correct mc and also it erases the memory of microcontroller. rahuljin<friend.rahul@nospam.com> http://www.8051projects.net/forum-t10215.html try using AVR Studio along with WinAVR (it will detect automatically) to get hex file.. I am just assuming that you have configured the makefile prope Ajay<contact@nospam.com> http://www.8051projects.net/forum-t10215.html i dont know what of avr programmer i have (stk200, 300, 500, etc.).is there anyway to detect it ??i am using the parallel port for ptogramming atmega1 rahuljin<friend.rahul@nospam.com> http://www.8051projects.net/forum-t10215.html I still feel u try using the hardware i earlier suggested . After all it requires only four resistors and a printer cable and works perfectly well ( m pdi33<islurpundalik@nospam.com> http://www.8051projects.net/forum-t10215.html stk200 is common for most of atmega series.If you have checked internet and on website tutorial, you will find people talking about STK200 only I wou Ajay<contact@nospam.com> http://www.8051projects.net/forum-t10215.html here is the schematic for STK200. pdi33<islurpundalik@nospam.com> http://www.8051projects.net/forum-t10215.html thanks !!! there was a problem in hardware.i made a new programmer -----http://gopchandani.wordpress.com/2007/01/18/the-atmega32-programmerit works gr rahuljin<friend.rahul@nospam.com> http://www.8051projects.net/forum-t10215.html yes you can use it with winavr (used and tested) and avr studio directly.. never tried it.. Ajay<contact@nospam.com> http://www.8051projects.net/forum-t10215.html used and tested ??? how ??i made the programmer without buffer chip. is it ok ?? rahuljin<friend.rahul@nospam.com> http://www.8051projects.net/forum-t10215.html thanks. one last think i want to ask. i get this circuit for test board, but it is active low. what is mean by active low and how i can make it active rahuljin<friend.rahul@nospam.com> http://www.8051projects.net/forum-t10215.html hi rahul,the programmer without the buffer is o.k. but not safe as far as long term is concerned.As far as the AVRstudio programmer is concerned, the pdi33<islurpundalik@nospam.com> http://www.8051projects.net/forum-t10215.html . I did not understand what u men when u said that the circuit was active low.maybe u meant the reset was active low. this means that the reset is ass pdi33<islurpundalik@nospam.com> http://www.8051projects.net/forum-t10215.html thanks. i get it now. the pins r in opposite direction so opposite output. i will correct it. so thats it for now and for this thread. rahuljin<friend.rahul@nospam.com> http://www.8051projects.net/forum-t10215.html i have a new problem. i added the resistor and capacitor(for reset) in the programmer so that i can test my codes in programmer without removing micro rahuljin<friend.rahul@nospam.com> http://www.8051projects.net/forum-t10215.html hi rahul,check ur reset pin if if is being pulled low by the programmer hardware. better remove the programmer connection from the reset pin and check pdi33<islurpundalik@nospam.com> http://www.8051projects.net/forum-t10215.html here is the fuse selection table for external crystal connection for various frequencies: pdi33<islurpundalik@nospam.com> http://www.8051projects.net/forum-t10215.html ground and reset r shorted. is it correct ??can i just put the oscillator in programmer but use the internal oscillator ? rahuljin<friend.rahul@nospam.com> http://www.8051projects.net/forum-t10215.html reset is not shorted to gnd. it is connected to gnd via a reset capacitor.o.k......... yes, that is the mistake in ur previous circuit.remove the shor pdi33<islurpundalik@nospam.com> http://www.8051projects.net/forum-t10215.html