at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 936

• Manufacturer Part Number: at91sam9263
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

void chk_for_buffer_empty(int add_cnt)
{
// Get BUFW_CNTR from 2DGC_CQCR and see if there is enough room in FIFO
if((((graphics_control.2DGC_CQCR & 0xFC0) >> 6) + add_cnt) >= 64)
{
if(interrupt_enabled)
// Wait for buffer empty interrupt to rise which should be enabled at first
place in 2DGC_GIMR.
sleep_until_event_from_isr;
else
while(!graphics_control.2DGC_GIR);
}
AT91SAM9263 Preliminary
936
6249D–ATARM–20-Dec-07