Intermec ck1 Guía De Referencia

Wait 2 seconds. Applications should write everything to flash disk after 
receiving the signal. 

Flush file system cache buffers to flash disk. 

Enter Standby mode. 

 

Syntax: 

int devApmStandby( void )

 

 On-CK1 Parameters: None 

 

On-CK1 Return: -1 

 Function 

failed 

0 Function 

succeeded 

 On-Host Parameters: None 

 

On-Host Return:  Always return 0 

 

Example:  Sample program to demonstrate how user-space applications deal with the 

signal SIGSLOW. 

#include <signal.h> 
 
static void write_everything(int); 
 
int main (void) 
{ 
  // register the signal service routine 
  if (signal(SIGSLOW, write_everything) == SIG_ERR) 
    printf(“

Can’t register write_everything

() to 

SIGUSR

1\n”); 

 
// write your codes below 
} 
 
static void write_everything(int signo) 
{ 
  // 

write your codes to write everything to flash disk below

 

  devApmFileCopy(“/var/myfile”, “/home/myfile”); 
} 

 

Purpose:  The APM can control the behavior of the backlight. When you press any 

key, the APM can enable the backlight and turn it off after a few seconds. 
In fact, it depends on the Backlight Off Time you set with 
devApmSetBacklightOffTime(). If the Backlight Off Time equals 0, the 
APM lets the backlight stay on until the APM enters Standby mode. If the 
Backlight Off Time does not equal 0, the APM turns off the backlight 
after Backlight Off Time. 

 

Syntax: 

int devApmBacklightEnable( void )

 

 On-CK1 Parameters: None 

 

On-CK1 Return: -1 

 Function 

failed