Z8FS021 datasheet(65/68 Pages) ZILOG

Il numero della parte	Z8FS021

Spiegazioni elettronici	Select from an assortment of lenses and pyroelectric sensors to best fit your application

PDF	68 Pages

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Produttore elettronici	ZILOG [Zilog, Inc.]

Homepage	http://www.zilog.com

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65 / 68 page

PS028806-0315

Appendix B. PIR Engine Initialization and Control

ZMOTION® Intrusion Detection

Product Specification

The flow diagram shown in Figure 12 displays the general software operation for Normal

Scan Rate mode.

Figure 12. Application Flow Diagram, Normal Scan Rate

Execute

ePIR_ADC_ISR

Macro

Monitor ePIR

API for Events

RESET

Initialize API Registers

Recommended settings supplied in

lens/pyro configuration file

PIR Scan R ate = 0

User

Application

Code

Set ePIR_Enable Register to

ePIR_ENABLE_PATTERN

Execute ePIR_INIT Macro

Enter ADC

Interrupt

Exit ADC

Interrupt

Set bit 7 of ePIR_SC1

(Engine Timer Tick)

1 Second

Timer Interrupt

Return

Wait for PIR Sensor Stable

ePIR_SC0:0=1

ePIR

Initialization

ADC

Interrupt

One

Second

Timer Tick

Main

Application

Loop

Initialize Flash Frequency Register

Enable ADC in PWRCTL0

Initialize Oscillator & WDT

Set up GPIO’s for application

Set up Timer for 1 Second Interrupt

Enable Global Interrupts

HALT

(Optional)

Application

Initialization

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