AVR ATMEGA644 and programtor.
11.02.2011 09:02:19
I can not understand why no one programmer does not see his ing ATMega644 ... not through a standard SPI, or through the AVR910 or rather not quite AVR910, and crafts from the Master Kit simulates the programmer. It seems the whole IC and the LPT port is still alive ...
Another problem is that when trying to assemble a scheme with h ** p: / / vga-avr.narod.ru/main_rus.html purely for testing the AVR ATMega8535, has turned out yet another headache. After assembling on the composite video output (I assembled the TV) has turned out something unintelligible)) type like the MC generates a clock signal but this is the case with VIDEO sour for some reason.
I took into account that:
Amount of RAM memory Mega8535 (512 bytes) is not sufficient to form a video signal with a resolution of 38x20 characters.
+ Changed to 5x5
+ Quartz put on 16MHz, 8MHz but the result does not change
+ Probyval and 20MHz unsuccessfully
The most interesting thing that some quartz do not put all one ...
In general nada relax ... Tags: atmega644, avr, programmer.
Another problem is that when trying to assemble a scheme with h ** p: / / vga-avr.narod.ru/main_rus.html purely for testing the AVR ATMega8535, has turned out yet another headache. After assembling on the composite video output (I assembled the TV) has turned out something unintelligible)) type like the MC generates a clock signal but this is the case with VIDEO sour for some reason.
I took into account that:
Amount of RAM memory Mega8535 (512 bytes) is not sufficient to form a video signal with a resolution of 38x20 characters.
+ Changed to 5x5
+ Quartz put on 16MHz, 8MHz but the result does not change
+ Probyval and 20MHz unsuccessfully
The most interesting thing that some quartz do not put all one ...
In general nada relax ... Tags: atmega644, avr, programmer.
