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Mea culpa. Another solution that works. (The power consumption will be a little bit higher, because of the higher clock speed) Setting the internal oscillator >>> not to divide the clock pulse by 8. >>> set config fuses: 0x0,0xe2 (low fuse changed) 0x1,0xdf Now increase the Clock speed to 8000000 Hz...

Hello Sean, Sorry for not replying for your message immediately. I was so disappointed... Definiately, my plan was to use the internal oscillator, not any external crystal. This was the base point. The program you wrote was optimized for external 20MHz crystal. The maximum frequency for my chip (TQF...

Hello Sean, You are my friend! Thank you for the quick response... Yes, I thought I will have problems with C. After you modifed the file, I dig out deeper in the Flowcode folder (...\\Matrix Multimedia\Flowcode_AVR\Tools\avr\include\avr) and saw there are a lot of header files for different devices...

Hi All, I am really not familiar with the C language. Several times I started to write USART interrupt driven apps in Flowcode AVR. I tried to use the configuration settings as written in the relating help section (see Custom Interrupt...). I modified the handler codes, based on the used AVR chip's ...