[Serial communication devices.USART Device Driver]

A pointer to devUsartAvr0 or devUsartAvr1 must be passed to NutRegisterDevice() to bind the corresponding device driver to the Nut/OS kernel.

 NutRegisterDevice(&devUsartAvr0, 0, 0);
 fp = fopen("uart0", "r+");
 fprintf("Hello world!\n");

The AVR USART devices make use of the hardware independant USART Device Driver

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