Description
Source
Call Graph
Start Line: 277
void ISR_IsiHandler(void)
{
unsigned int status = ISI_StatusRegister();
//TRACE_DEBUG("I:0x%X", status);
// Fifo Preview Empty
if(status & AT91C_ISI_FO_P_EMP) {
if( S_Video.IsiPrevBuffIndex < AT91C_ISI_MAX_PREV_BUFFER) {
S_Video.lcd_fb_addr = FbList[S_Video.IsiPrevBuffIndex].Current;
S_Video.IsiPrevBuffIndex++;
}
else {
S_Video.lcd_fb_addr = FbList[0].Current;
S_Video.IsiPrevBuffIndex = 0;
IsiDescriptors.CurrentLcdIndex = 0;
}
}
// Fifo Codec Empty
if(status & AT91C_ISI_FO_C_EMP) {
TRACE_DEBUG("Fifo Codec Empty\n\r");
IsiDescriptors.DisplayCodec = 1;
}
// Fifo Codec Overflow
if(status & AT91C_ISI_FO_C_OVF) {
TRACE_DEBUG("Fifo Codec Overflow\n\r");
IsiDescriptors.nb_codec_ovf++;
}
// Fifo Preview Overflow
if(status & AT91C_ISI_FO_P_OVF) {
TRACE_DEBUG("Fifo Preview Overflow\n\r");
IsiDescriptors.nb_prev_ovf++;
}
}