Hello,
I'm trying to use the DDK to read and write to the Registers of the running VI on the FPGA (7831R+7833R). So I downloaded the examples for the R-Series. It still reads 0xffff but i don't now why....?!
I'm using the VISA OsiBus and the 7831R Layer.
I hope someone could help me!
Thx!
Here's the Code:
#include "osiBus.h"
#include "stdio.h"
#include "t7831R.h"
#include "windows.h"
void example(iBus *bus);
void initMite(iBus *bus);
int main() {
iBus* bus;
bus = acquireBoard("RIO::INSTR"); if(bus == NULL){printf(
"Error accessing the PCI device. Exiting.\n"); return 1; }
initMite(bus);
example(bus);
releaseBoard(bus);
return 0; }
void initMite(iBus *bus) {
u32 value, value2;
tAddressSpace Bar0;
u32 physicalBar1;
Bar0 = bus->createAddressSpace(kPCI_BAR0);
physicalBar1 = bus->get(kBusAddressPhysical,kPCI_BAR1);
printf ("BAR1: %x\r\n", physicalBar1);
Bar0.write32(0x10, 0x41550000);
Bar0.write32(0x8, 0x0);
value2 = Bar0.read32(0xC4);
Bar0.write32(0xF0, 0x0);
Bar0.write32(0xF4, 0x0);
value = Bar0.read32(0xF4);
Bar0.write32(0xC0, (physicalBar1 & 0xffffff00L) | 0x80);
Bar0.write32(0xC4, (physicalBar1 & 0xffffff00L) | 0x808E);
// IOPCR
Bar0.write32(0x470, 0x800372);
Bar0.write32(0x24, 0x77908894);
//
Bar0.write32(0xF4, 0x0);
bus->destroyAddressSpace(Bar0);
}
void example(iBus *bus) {
tAddressSpace Bar1;
t7831R *board;
int i = 0; short sum;
short Reset = 1; short Restart = 1;
short EnableIn, EnableOut;
Bar1 = bus->createAddressSpace(kPCI_BAR1);
board = new t7831R(Bar1); printf ("bus: %x\r\n", *bus); //printf ("BAR1: %i/r/n", (int)Bar1);
printf ("board: %x\r\n\r\n", (int)board);
if (Reset == 1)// Reset of the FPGA
{
printf ("Resetting board...\r\n"); board->CommandRegister.writeReset(1);
board->CommandRegister.writeReset(0);
Sleep(10); // wait 10 ms
board->CommandRegister.writeEnableClear(1);
board->CommandRegister.writeEnableClear(0);
}
// Check for necessary restart
EnableOut = board->CommandRegister.readEnableOut();
EnableIn = board->CommandRegister.readEnableIn();
if (!((EnableIn == 1) && (EnableOut == 0)) && (Restart == 1)) {
printf ("Restarting FPGA VI...\r\n\r\n"); board->CommandRegister.writeEnableClear(1);
board->CommandRegister.writeEnableClear(0);
// Set initial control values here if necessary
// Start
board->CommandRegister.writeEnableIn(1);
}
// Read 32-bit value, 1st register
i = board->IO32bit_1.readIO32bit_1Data();
printf ("index: %i\r\n", i);
// Write 16-bit value, 2nd and 3rd register
board->IO16bit_2.writeIO16bit_2Data(5);
board->IO16bit_3.writeIO16bit_3Data(4);
Sleep (500); // Wait at least 100 ms to calculate sum and update index
// Read 16-bit value, 4th register
sum = board->IO16bit_4.readIO16bit_4Data();
printf ("Sum: %i\r\n\r\n", sum); // Read/write 16-bit value directly from register (upper 2 byte of each)
Bar1.write16(0x810A, 40);
Bar1.write16(0x810E, 50);
Sleep (500); // Wait at least 100 ms to calculate sum and update index
sum = Bar1.read16(0x8112);
printf ("Sum: %i\r\n", sum); // Read 32 bit value directly from register (all 4 bytes of the 1st register)
i = Bar1.read32(0x8104);
printf ("index: %i\r\n", i);
scanf("\r\n");
delete board; bus->destroyAddressSpace(Bar1);
}
