Use the timer as a baud rate generator, and the calculation formula is:
Reference address：51 MCU baud rate calculation formula
The internal structure of T1 and T2 counters is the same:
fosc/(32*12*(256-TH1)); SMOD=0; //11.0592,(9600,8,1) value is 0xfd, and so on according to the crystal oscillator and initial value
//24MHz (4800,8,1) value is 0xf3
T2 calculation formula:
fosc/(32*(65536- (RCAP2H,RCAP2L) ) ); SMOD=0//11.0592, (9600,8,1) value is 0xFFDC, and so on according to the crystal oscillator and initial value
Note: fosc: crystal oscillator frequency Hz
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files describe a example tranmister a txt by uart from host PC and select baud rate
Software uart using a general purpose io and an external interrupt pin of an atmel uc. half duplex o
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