It is a must to set SPBRG value, when interfacing with UART/USART device with PIC micro controllers.
The formula to calculate SPBRG is given below
Error can be calculated by
Where Fosc is the frequency of the crystal used in PIC micro eg: 20MHz. And Baud Rate is the desired required baud rate.
The tool below can be used to calculate the SPBRG and Error %.
Desired Baud rate :
Is Synchronous
Result: Use calculate button
