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SCI COMMUNICATION BETWEEN ST7 AND PC

Figure 5. Transmission mode, Reception mode

4.4 SOFTWARE

All the source files in assembly code are given in the zip file with application note.

The source files are for guidance only. STMicroelectronics shall not be held liable for any di-

rect, indirect or consequential damages with respect to any claims arising from use of this soft-

ware.

A

Nb = 4

set SCI peripheral

in transmission mode

send the byte from

address (Nb-1) of buffer

Nb = Nb - 1

byte sent ?

Nb = 0 ?

B

no

yes

no

yes

B

Nb = 4

set SCI peripheral

in reception mode

put new byte into

buffer at address (Nb-1)

Nb = Nb - 1

new byte

Nb = 0 ?

A

no

yes

no

yes

received ?