man NJB_Ping (Fonctions bibliothèques) - ping an open NJB device

NAME

NJB_Ping - ping an open NJB device

libnjb

#include <libnjb.h>

extern int njb_error

njbid_t *NJB_Ping (njb_t *njb)

The NJB_ping function will ping the NJB device, requesting an njbid_t which returns a structure of this layout:

typedef struct { unsigned char id[16]; u_int8_t fwMajor; u_int8_t fwMinor; u_int8_t fwRel; char productName[33]; u_int8_t power; } njbid_t;

When a njbid_t has been obtained using NJB_Ping() it must be freed using free().

id: A string representing the Jukebox unique ID. This may be used for filenames storing device-specific file caches and similar things associated with a unique device.
fwMajor: 8-bit integer representing the major revision of the firmware.
fwMinor: 8-bit integer representing the minor revision of the firmware.
fwRel: 8-bit integer representing the release revision of the firmware. This parameter is only supplied with newer jukeboxes and is 0 for old jukeboxes.
productName: A string giving the unique product name given this product, such as "Nomad Jukebox ZEN" and similar strings.
power: An integer indicating if the device is currently connected to a power outlet. This is primarily used for checking that the power is connected before flashing a firmware upgrade.