1. What is the Baud Rate Calculation?

The baud rate calculation determines the communication speed between devices in a UART (Universal Asynchronous Receiver-Transmitter) system. For the Xiegu G90 radio, this calculation helps configure the serial communication properly.

2. How Does the Calculator Work?

The calculator uses the baud rate formula:

Where:

• \( system\_clock \) — The system clock frequency in Hertz (Hz)
• \( uart\_div \) — The UART divisor (integer value)
• 16 — The standard prescaler value for UART communication

Explanation: The equation calculates the baud rate by dividing the system clock frequency by 16 times the UART divisor value.

3. Importance of Baud Rate

Details: Proper baud rate configuration is essential for reliable serial communication between the Xiegu G90 and connected devices like computers or data controllers. Mismatched baud rates can cause communication errors or complete failure.

4. Using the Calculator

Tips: Enter the system clock frequency in Hz and the UART divisor as an integer. Both values must be positive numbers (divisor must be at least 1).

5. Frequently Asked Questions (FAQ)

Q1: What are common baud rates for the Xiegu G90?
A: Common rates include 9600, 19200, 38400, and 57600 baud, depending on the configuration and connected devices.

Q2: How do I find my system clock frequency?
A: Consult your Xiegu G90 documentation or specifications. This is typically a fixed value in the hardware design.

Q3: What happens if I set the wrong baud rate?
A: Communication will fail or become unreliable, with garbled data or no response from the device.

Q4: Can I use non-standard baud rates?
A: Some systems support non-standard rates, but compatibility depends on both the Xiegu G90 and the connected device.

Q5: Why is there a divisor of 16 in the formula?
A: This is standard for UART systems, providing sufficient sampling of each bit for reliable communication.