/*
=========================================================================
NAME: resetFIFO
=========================================================================
PURPOSE:
Reset FIFO functions.
INPUT:
None.
OUTPUT:
None.
RETURN VALUE:
None.
COMMENT:
AUTHOR:
Robert L. Thrift, 2004
Code borrowed from Phil Hornung's rsStart.c
=========================================================================
*/
void resetFIFO(void)
{
FPGA_PTR(RF_FIFOControl); /* Ptrs to FPGA registers (rf.h) */
FPGA_PTR(RF_FIFOOutputSelect);
FPGA_PTR(RF_InterruptClear);
FPGA_PTR(RF_InterruptEnable);
FPGA_PTR(RF_ClearCumulativeDuration);
/* ------ Remove following line when FIFO reset is wired up ------- */
resetFPGA(); /* Hopefully this will become unnecessary */
*pRF_FIFOControl = 0; /* Trigger FIFO reset */
*pRF_FIFOControl = FIFO_RESET;
*pRF_FIFOOutputSelect = 0; /* Select hardware output */
*pRF_FIFOOutputSelect = 1;
*pRF_InterruptClear = 0; /* Clear interrupt status bits */
*pRF_InterruptClear = 0x1ff;
*pRF_InterruptEnable = 0; /* Enable FIFO interrupts */
*pRF_InterruptEnable = 0x1f;
*pRF_ClearCumulativeDuration = 0; /* Clear cumulative duration reg. */
*pRF_ClearCumulativeDuration = 1;
}
int main(int argc, char ** argv) {
char c ;
unsigned int i ;
FILE * fr;
long start_time, end_time ;
double diff_time ;
struct timespec cpu_time ;
unsigned int size = 0 ;
initGPIOs();
init_i2c(1);
//parse programm args
for(i = 1 ; i < argc ; ) {
if(argv[i][0] == '-') {
switch(argv[i][1]) {
case '\0':
i ++ ;
break ;
case 'r' :
resetFPGA();
closeGPIOs();
close(i2c_fd);
return 1 ;
break ;
case 'h' :
printHelp();
return 1 ;
break;
default :
printHelp();
return 1 ;
break ;
}
} else {
//last argument is file to load
break ;
}
}
if(init_spi() < 0) {
printf("cannot open spi bus \n");
return -1 ;
}
fr = fopen (argv[i], "rb"); /* open the file for reading bytes*/
if(fr < 0) {
printf("cannot open file %s \n", argv[1]);
return -1 ;
}
memset((void *) configBits, (int) 0, (size_t) 1024*1024);
size = fread(configBits, 1, 1024*1024, fr);
printf("bit file size : %d \n", size);
//8*5 clock cycle more at the end of config
if(serialConfig(configBits, size+5) < 0) {
printf("config error \n");
exit(0);
} else {
printf("config success ! \n");
}
closeGPIOs();
fclose(fr);
close(spi_fd);
close(i2c_fd);
return 1;
}
