ACS ACR89U-A1 User Manual download pdf (Page 114)

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ACR89U-A1 Application Programming Interface

Version 1.00

Page 114 of 115

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void main( void )

{

long x;

/* Create then start the one-shot timer that is responsible for turning

the back-light off if no keys are pressed within a 5 second period. */

xBacklightTimer = xTimerCreate(

"BacklightTimer", /* Just a text name, not used by the kernel. */

( 5000 / portTICK_RATE_MS), /* The timer period in ticks. */

pdFALSE, /* The timer is a one-shot timer. */

0, /* The id is not used by the callback so can

take any value. */

vBacklightTimerCallback /* The callback function that switches the

LCD back-light off. */

);

if( xBacklightTimer == NULL )

{

/* The timer was not created. */

}

else

{

/* Start the timer. No block time is specified, and even if one was

it would be ignored because the scheduler has not yet been

started. */

if( xTimerStart( xBacklightTimer, 0 ) != pdPASS )

{

/* The timer could not be set into the Active state. */

}

/* ...

Create tasks here.

... */

/* Starting the scheduler will start the timer running as it has already

been set into the active state. */

xTaskStartScheduler();

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ACS ACR89U-A1 User Manual Page 114