Listing 61: Getdisplayequalizer - Display Equalizerwert Lesen - B&R APC910 Implementierungsanleitung

APC910 / PPC900
Implementierungsanleitung
Das folgende C Codebeispiel zeigt, wie der Equalizerwert eines Displays gelesen werden kann.
// Get display equalizer value.
//
// Parameters
// PanelNumber
// [in] Specifies the panel number: 0 to 15.
// EqualizerMode
// [out] Points to a variable that receives the
// equalizer mode: 0 = automatic or 1 = user specific.
// EqualizerValue
// [out] Points to a variable that receives the
// equalizer value: 0 (strong) to 15 (weak).
// If EqualizerMode is 0, this is the automatic
// equalizer value. If EqualizerMode is 1, this
// is the user specified equalizer value.
//
// Return 0 at success and -1 at failure.
//
// Remarks
// AP900: Requires SDL firmware version 1.04 or higher.
int GetDisplayEqualizer(unsigned int PanelNumber, int *EqualizerMode, unsigned char
*EqualizerValue)
{
int retvalue;
// TODO: acquire synchronization object for panel data here
retvalue = MtcxSwitchToLinkedPanel(PanelNumber);
if (retvalue == MTCX_OKAY)
{
MTCX_PANEL_FLAGS_REG reg;
*(unsigned long*)&reg = READ_PORT_ULONG(MTCX_PANEL_FLAGS_ADDR);
if (reg.EqualizerSupport)
{
*EqualizerMode = reg.EqualizerMode;
if (reg.EqualizerMode)
*EqualizerValue = reg.EqualizerUser;
else
*EqualizerValue = reg.EqualizerAuto;
WRITE_PORT_ULONG(MTCX_PANEL_FLAGS_ADDR, *(unsigned long*)&reg);
}
else
retvalue = MTCX_FAIL_NOSUPPORT;
}
// TODO: release synchronization object for panel data here
if (retvalue != MTCX_OKAY)
{
// TODO: add your error handling here
return -1;
}
return 0;
}
Listing 61: GetDisplayEqualizer – Display Equalizerwert lesen
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