Hi
I have trouble with the sampling of ATA_SEL line during POR.
I am trying to run the CFI in PC-ATA IO Mode using PIOs driving the CFI pins ( well most of them)
Hence i am trying to Power off the CF Card and wait for a couple of seconds before switching the power on.
I figured this should let me setup my ATASEL line to 1 and then Power on the chip,
so that the chip would sample 1 on ATASEL and switch to PC-mem Mode.
But even after Switching power off for 10 sec and then switching it back on, any registers i set previously are not getting reset to their Power on Defaults.
What am i doing wrong ???
BTW i am using Nios Stratix Dev Kit 1s10
My code :-->
void init()
{
printf("\nWaiting for card to be plugged in");
while(RD(CF_DETECT_BASE)==1)
;
printf("\nCard Detected ");
printf("\nPower Cycling Card");
WR(CF_ATASEL_BASE,1);
WR(CF_POWER_BASE,0);
printf("\nWaiting 10 Sec to take care of Leakage Currents");
usleep(10000000); //10 sec
WR(CF_POWER_BASE,1);
printf("\nRestarting:: Waiting 1 Seconds for CF Power Supply Ckt To Stabilise");
usleep(1000000); //1 sec
WR(CF_RFU_BASE,0);
WR(CF_IORD_N_BASE,1);
WR(CF_IOWR_N_BASE,1);
WR(CF_WE_N_BASE,1);
WR(CF_ATASEL_BASE,0);
WR(CF_CS_N_BASE,0);
SW(CF_SPKR_BASE,0);
SW(CF_DATA_BASE,0);
while(RD(CF_SPKR_BASE)==0)
;
printf("\nCard Powered up Successfully");
}
regards
Pavan
