words from RT 8 sub-address 4 on channel 'A', followed by a 32 word receive from RT 7 sub-address 2 on channel 'A'. Note that the
creation of a 32 word message requires only that the data be defined in a buffer, and then a single function call to BuSendData(…)
be made. Similarly, to receive data from a RT, a buffer must be defined, and a call to BuGetData(…) will be made. This encapsu-
lated functionality relieves the application developer from having to know the dirty details of the 1553 protocol hardware and registers.
The following code is from the BCDEMO1.C sample program supplied with the BU-6555X hardware.
#include <stdio.h>
#include <stdlib.h>
#include <stdace.h>
void main ()
{
BuConf_t Conf; /* ACE library configuration type */
BuError_t Err; /* ACE library error status type */
U16BIT data[32]={ 0X0000,0x1111,0x2222,0x3333,0x4444,0x5555,0x6666,0x7777,
0x8888,0x9999,0xAAAA,0xBBBB,0xCCCC,0xDDDD,0xEEEE,0xFFFF,
0x0001,0x0002,0x0004,0x0008,0x0010,0x0020,0x0040,0x0080,
0x0100,0x0200,0x0400,0x0800,0x1000,0x2000,0x4000,0x8000};
/* display revision info */
printf("%s\n\n",BuRev());
printf("\nThis BC Demo sets the Ace card in BC mode and sends a few messages.\n\n");
/* setup configuration for device X and open ACE library */
printf("Choose the logical device # of your BC:> ");
scanf("%d",&Conf.ConfDev);
Err=BuOpen32(&Conf);
if(Err) {
printf("BuError %d %s\n",Err,BuErrorStr(Err));
return;
}
/* opens bus controller mode */
BuBCOpen();
/* send 10 words to rt 5 sa 1 on channel A */
Err=BuBCSendData(CW_CHANNELA,5,1,data,10);
printf("%s\n",BuErrorStr(Err));
/* send 32 words to rt 6 sa 1 on channel A
added this [01-SEP-1995] to test 32 word case */
Err=BuBCSendData(CW_CHANNELA,6,1,data,32);
printf("%s\n",BuErrorStr(Err));
/* receive 5 words from rt 8 sa 4 on channel A */
Err=BuBCGetData(CW_CHANNELA,8,4,data,5);
printf("%s\n",BuErrorStr(Err));
/* display data */
if(!Err){int x;for(x=0;x<5;x++)printf("%04x ",data[x]);printf("\n");}
/* receive 32 words from rt 7 sa 2 on channel A
added this [01-SEP-1995] to test 32 word case */
Err=BuBCGetData(CW_CHANNELA,7,2,data,32);
printf("%s\n",BuErrorStr(Err));
/* display data */
if(!Err){int x;for(x=0;x<32;x++)printf("%04x ",data[x]);}
/* closes bus controller mode */
BuBCClose();
/* must call at end of ACE library use */
BuClose();
}
9
ETC [ ETC ]
