void ExtractorExchange::run() {
do {
sizeRead = readEP6(bufferQs1r, BlockzSize);
emit bufferUpdate(sizeRead);
}
while (sizeRead); // FIXME check if something goes wrong...
}
void PRUloader::pruEvt0_thread(){
// log start time
struct timespec time_now;
printf("\r\n");
clock_gettime(CLOCK_MONOTONIC_RAW, &time_now);
double start_time = time_now.tv_sec + time_now.tv_nsec / 1e9;
double dt = 0.0;
double time_now_s;
float writeBlock = 0;
unsigned int writeBlock_u = 0;
int unwritten_blocks = 0;
unsigned int blocks_free = 0;
rx_thread_running = true;
while(!quit_rx_thread){
prussdrv_pru_wait_event(PRU_EVTOUT_0);
prussdrv_pru_clear_event(PRU_EVTOUT_0, PRU0_ARM_INTERRUPT);
switch (mode){
case PRU_FILE:
if (last_block){
// break out of this loop, data transfer is complete
break;
}
while(blockFree() >= 1){
delta = bufferUpdate();
}
// display time from start
clock_gettime(CLOCK_MONOTONIC_RAW, &time_now);
time_now_s = time_now.tv_sec + time_now.tv_nsec / 1e9;
dt = (time_now_s - start_time);
printf("%s%4.0f%s%4.0f\r", "Time = ", dt, ", Interval between writes (ms) = ", delta * 1e3);
fflush(stdout);
break;
case PRU_STREAM:
// use the block free signal as an interrupt to check whether sufficient data has been loaded
// we here because a block is free - no need to check!
blocks_free++;
// get current write block
// determine which block is being written to currently
// we end up chasing alsaWritePointer
writeBlock = (float)(*alsaWritePointer)/BLOCK_512K;
writeBlock_u = floor(writeBlock);
writeBlock_u &= 0x3;
// is there data that we have not copied to PRU?
unwritten_blocks = (int)writeBlock_u - (int)alsaNextReadPointer;
//printf("\r\n%10s >> %5u %5d %5.2f\r\n", "while", blocks_free, unwritten_blocks, writeBlock);
while (blocks_free && (unwritten_blocks != 0)){
memcpy((char*)ddrMemOrigin + arm_write_pointer*BLOCK_512K, fifoBasePointer + alsaNextReadPointer*BLOCK_512K, BLOCK_512K);
blocks_free--;
alsaNextReadPointer++;
alsaNextReadPointer &= 0x3;
// keep track of write pointer
arm_write_pointer++;
arm_write_pointer &= 0x3;
writeBlock = (float)(*alsaWritePointer)/BLOCK_512K;
writeBlock_u = floor(writeBlock);
writeBlock_u &= 0x3;
unwritten_blocks = (int)writeBlock_u - (int)alsaNextReadPointer;
// printf("%10s >> %5u %5u %5d %5d\r\n", "pru_stream" ,alsaNextReadPointer, arm_write_pointer, unwritten_blocks, writeBlock_u);
}
break;
case PRU_GEN:
break;
default:
//printf("PRUloader >> Unknown mode\r\n");
break;
}
}
rx_thread_running = false;
}
