Sensoray 817 Uživatelský manuál stáhnout pdf (Strana 15)

Troubleshooting and Debugging Tools

This section describes data types and functions used for obtaining various status

information from the 817 board. Though not required to be used during normal

operation, those could provide assistance in resolving various performance issues.

CHAN_STATUS

typedef struct {

int lastCmd;

unsigned int chanTick;

int putToSleep;

int lockPend;

int fvidStat;

unsigned int noFreeBufJpg;

unsigned int noFreeBufBmp;

} CHAN_STATUS;

Defines a status structure for a capture channel. Returned as part of

SYS_STATUS

structure by

S817_GetStatusInfo

function.

lastCmd

Last command received by a channel.

chanTick

Value of system 1 ms timer corresponding to the last frame captured by a channel

(frame capture rate always equals the video source frame rate regardless of the

frame decimation setting which affects the output frame rate).

putToSleep

lockPend

A non-zero value of any of those indicates a critical hardware error on a channel.

fvidStat

A value of 1 indicates normal operation. Other values indicate a critical hardware

error.

noFreeBufJpg, noFreeBufBmp

This value is a running count of the conditions when there was no free buffer

available on the host to accept data from the board. It does not indicate a critical

error, but could be used to gauge the overall performance of the system. Usually a

small number of those cases is registered when the application starts. Steady

increase of this value indicates an application’s performance bottleneck and results

in some decrease of capture rate.

SYS_STATUS

typedef struct {

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Sensoray 817 Uživatelský manuál Strana 15