In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Lightfoot wrote:

I set up a circuit that has a 22000 ohm resistor between the TXD pin and ra.0 of an SX chip.  I wrote this program to capture an 8 bit signal from the computer's serial port.

[code]
DEVICE          SX28, OSC4MHZ, TURBO, STACKX, OPTIONX
FREQ            4_000_000
PROGRAM Start

tris_b = 0
sdata var byte 
LEDs var byte

Start:

DO
    SERIN RA.1, N2400, sData              
    rb = sData                             
LOOP
[/code]

How come the LED's do not light up in accordence to the binary value sent?  The transmitter is a computer using visual basic.NET to send the signal.

Thanks

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