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Q3 (Serial Port Register setting) C Write the initialisation code to set up the ATMega328P USART as follows: Asynchronou
Posted: Wed Apr 27, 2022 3:37 pm
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- Q3 Serial Port Register Setting C Write The Initialisation Code To Set Up The Atmega328p Usart As Follows Asynchronou 1 (162.37 KiB) Viewed 37 times
Q3 (Serial Port Register setting) C Write the initialisation code to set up the ATMega328P USART as follows: Asynchronous operation 8-bit data, 1 stop bits, odd parity Transmit Enabled Receive Enabled TXCIE Enabled RCIE Enabled Double Speed Mode selected O Baud Rate selected = 115200 Assume a CPU Clock Frequency of 16 MHz Estimate the %Error between the Baud Rate produced by these settings and the ideal value of 115200 Baud. You may use the following equations for your calculations. Table 20-1. Equations for Calculating Baud Rate Register Setting Equation for Calculating Baud Operating Mode Rate Equation for Calculating UBRRn Value Asynchronous Normal mode (U2Xn = 0) BAUD = fosc 16(UBRRn+1) UBRR = fosc 16 BAUD 1 Asynchronous Double Speed mode (U2Xn = 1) fosc BAUD = UBRR = fosc 8BAUD 1 8(UBRRn+1) And = BaudRate Closest Match Error[%] 1 • 100% BaudRate Figure Q3. Baud Rate equations for ATmega328P (Note that Baud Rategesest Match refers to the calculated Baud Rate using actual UBRRO values, and the Baud Rate refers to the ideal Baud Rate).