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SCI COMMUNICATION BETWEEN ST7 AND PC

Figure 3. Overview Schematic

Be sure that the three main devices (PC, ST7, MAX232) have the same electrical reference

(GND).

The Receive Data pin (RD) of the serial port of the PC must correspond to the TDO pin of the

ST7, and the Transmit Data pin (TD) to the RDI pin.

4.3 FLOWCHARTS

The flowcharts of the application are presented below (Figure 4., Figure 5.).

Figure 4. Initialization

PC

TERMINAL

serial port

TD

RD

TDO

RDI

GROUND

MAX232

IN

OUT

OUT

IN

ST72F264

GND

GND

GND

start

ST72311 initialization

default value of buffer

SCI peripheral

initialization

A