Would someone be able to tell me how to initialize the serial port on the C515C so that when I send a printf statement I'll be able to read it on HyperTerminal. It could be that I have not set up the baud rate, stop bit, and flow control on the HyperTerminal so any comments on this would be appreciated
You'll need to initialize the timer to generate the correct baud rate. You also need to decide if you will use interrupts. Refer to the 8051 manual for the former. You can poll on the RI or TI flags to do output w/o interrupts. Search the archives of Usenet comp.arch.embedded or go to http://www.8051.com for sample code.
Make sure that the oscillator frequency you have allows the baud rate you want. For example, 9600 baud is not possible with a 12MHz using timer 1. See http://www.keil.com/c51/baudrate.asp for baudrate reload values for Timer 1. Jon
Try that: ********************************************** ;* Using 10 Bit Baudrate Generator * ;* Oscillator frequency = 10.0 MHz * ;* Set Baudrate to 9600 Baud * ;********************************************* BD BIT 0DFH SRELL DATA 0AAh SRELH DATA 0BAh InitSerial: SETB BD ; Baudrate Generator MOV SRELL,#0BFH ; (for 10MHz) MOV SRELH,#00000011B ORL PCON,#10000000B ; SMOD = 1 MOV SCON,#01011010B ; Init Serial Interface regards Stefan