Determine the appropriate bit settings for UCSR0A, UCSR0B, UCSR0C,and UBRR0 to m

Question

Determine the appropriate bit settings for UCSR0A, UCSR0B, UCSR0C,and UBRR0 to manage a serial interface using the following specific details: – disable the multi-processor communication mode, – turn off the RX complete interrupt, turn off the TX complete interrupt, turn off the data register empty interrupt, (In fact, turn off ALL USART0 interrupts.) – turn on the receiver, turn on the transmitter, – set the character size to 8 bits, – use the asynchronous USART mode, – use no parity, – use 1 stop bit, – set the baud rate to 115200 bits per second.

Explanation / Answer

at 115200 the ubrr0 value will be very small and the error if we round the number will be too big.

so for this case you need to decrement the ubrr0 value by 1.

you can use the below c code for the setup.

void setup(){ analogReference(DEFAULT); Serial.begin(9600); }

void loop(){ while(Serial.available() > 0){ Serial.println(Serial.read(), BYTE); } }

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