Intermec ck1 Reference Guide

If you want to change the default volume (for example 70) by hand, log 
into the CK1 and type these commands: 

#echo “70” > /etc/config/default_buzzer 
#sh /etc/config/es_set_config.sh 

Another way to adjust the volume by hand is to log into the device and 
type this command.  

#echo “a 70” > /proc/volume 

This command temporarily changes the volume. The CK1 reloads the 
default volume when it reboots. 

///////////////////////////////////////////////////////////////// 
/***************************************************************** 
 * ------- 
 * Purpose 
 * ------- 
 * Buzzer functional sample code is based on buzzer library. 
 * User easily know how the library functions control buzzer. 
 * 
 * ---------------------------- 
 * Behavior of this sample code 
 * ---------------------------- 
 * Every test item controls action of buzzer according to respective function 
of library.  
 * 
 * Extra Test Item: 
 * 't' and 'T' are to further test play sound function so they don't belong 
to library.    
 *  
 * ----------------------- 
 * How to Use this Program 
 * ----------------------- 
 * According to "Buzzer Functional Test Menu"  
 * 
 * 
***************************************************************************/ 
 
///////////////////////////////////////////////////////////////// 
 
#include <eslib_buzzer.h> 
 
//#define opt_num 9 
#define NUM_cnt 

12 

 
struct buzzer_param_stru { 
        unsigned long freq; 
        unsigned long length; 
        char  volume; 
}buzzer_config; 
 
 
char * Str_Freq[NUM_cnt] = {"Do", "Re", "Mi", "Fa", "Sol", "La", "Si", "C+",