ECG Acquisition in a Computer - ECG Acquisition and Automated Remote Processing - page 89

End of Chapter Appendix 2

Start

Initialize packet counter

Initialize frame counter

Generate delay for '0' bit *1

Load byte in Acc from RAM; Counter = 08

Rotate Acc right through Cy

N Y

Cy
=1
?

Generate delay for '0' bit and
complement the output line

Generate delay for '1' bit and
complement the output line for two times

Decrement Frame counter by 1

Frame
counter
=
0?

N

Start new packet

Y

Generate delay for '1' bit and complement
the output line for two times *2

Decrement packet counter by 1

*1 : Start bit
*2 : Stop bit

Packet
counter
=
0?

Y

Stop