NetBurner Community Forum

What a weekend! It seems that the lag is between 5 and 10 microseconds. The problem seemed to be the oscilloscope setup (high bandwidth and trigger noise) causing a screwy trigger. I bury my head in shame.... I am using only two interrupts, both external. Int1 and Int3. I enable them only when neede...

I looked at the functions USER_ENTER_CRITICAL() and USER_EXIT_CRITICAL() but the manual indicates that these functions disable all hardware interrupts.

The system that I have built uses two external interrupts to grab the output of an ADC with a MOD5282. I have a slow (~1Hz) signal hooked up to Int3 and use a semiphore to detect when this is in the "grab the data" logic state. I then perform an OSSemPend on Int3 (to wait for it return to ...

iprintf doesn't support float (%f) formating.

I use sprintf to define the string in a buffer first, then print it to the serial port with iprintf.

char buf[80];
sprintf(buf,"fed back ch0 AI val: %.2f\r\n",myVal);
iprintf(buf);

-Rich

Update: I sent this question to support. Paul replied that " the problem is probably related to the Base address. 0x02800000 is right on the border of the SDRAM and the SDRAM controller is probably stealing that transaction. Change your base address to say 0xC0000000 and see if that resolves it...

Another Newbie here. I have a Mod5282 development board and am having trouble with running a simple routine to read in an external byte off the bus using the BusRW82.zip example I downloaded off the yahoo group. I am monitoring the OE and CS1 signals on an oscilloscope and do not see any transitions...