CAPLfunctionMOSTSetClockSource

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CAPL Functions » MOST » mostSetClockSource

mostSetClockSource

Valid for: CANoe DE

Note
This function is only available with MOST hardware VN2610.

Function Syntax

long mostSetClockSource(long channel, long source);

Description

Sets the clock source for the MOST timing master. The function has no effect if the network interface is configured as MOST timing slave.

Parameters

• channel: Channel of the connected interface
• source:
  • 0: Internal oscillator.
  • 1: Synchronizes the timing master clock to the S/PDIF input signal. The network interface must be configured as S/PDIF timing slave (refer to mostSetSyncSpdifMode()).

Return Values

See error codes.

Example

Use case: External S/PDIF source device connected to the S/PDIF In connector of the VN2610

Typically the internal oscillator is used as clock source, since most S/PDIF source devices do not generate a S/PDIF signal with the same clock as the MOST clock (44,1 / 48 kHz).

// use internal oscillators timing master clock
on key 's'
{
  long channel = 1;

  // configure network interface as S/PDIF slave
  mostSetSyncSpdifMode( channel, 0 );
  mostSetSyncSpdifLock( channel, 1 );

  // set the clock source
  mostSetClockSource( channel, 0 );
}

In some special cases, e.g. for testing purpose it is possible to synchronize the timing master clock to S/PDIF input signal.

// synchronize the timing master clock to the S/PDIF input signal
on key 's'
{
  long channel = 1;

  // configure network interface as S/PDIF slave
  mostSetSyncSpdifMode( channel, 0 );

  // set the clock source
  mostSetClockSource( channel, 1 );
}

More S/PDIF examples see MOST Access to Digital Audio Channels (S/PDIF In and Out).

Related Functions:
mostSetTimingMode • mostSetSyncSpdifMode • mostGetSyncSpdifMode • mostGetClockSource • mostSetSyncAudio • mostSetSyncSpdif