Filter
Top Products
/* Create the command string which reads bit 1 */
sprintf(bit_str, "DIAG:PEEK? %ld, %d", base_addr+0x43,8);
/* Send DIAG:PEEK? to access the data register 20 times. */
while (loop < 2) /* two bursts (segments) */
{
for (i = index;i < readings; i++)
{
IOOUTPUTS(CMD_MOD, read_str, strlen(read_str));
IOENTER(CMD_MOD, &rdgs[i]);
}
/* Check bit 1 of offset register 43h before proceeding with */
/* the next segment. */
do /* decimal value of bit 1 */
{
IOOUTPUTS(CMD_MOD, bit_str, strlen(bit_str));
IOENTER(CMD_MOD, &bit);
} while ((int)bit & 2 == 0);
index +=20; /* increment index for next segment */
readings +=20; /* increment readings for next segment */
loop++; /* increment loop */
}
/* Convert to voltages and print the readings */
for (i = 0;i < 20; i++)
{
rdgs[i] /= 16; /* remove label from reading */
if (rdgs[i] >= 2047 || rdgs[i] <= -2046)
printf("Reading overrange");
else
printf ("%.6E", (rdgs[i]
*
0.0025));
rdgs[i+20] /= 16;
if (rdgs[i+20] >= 2047 || rdgs[i+20] <= -2046)
printf("\t\tReading overrange\n");
else
printf("\t\t%.6E\n", (rdgs[i+20]
*
0.0025));
}
Continued on Next Page
Chapter 2 Usin
g
the Di
g
itizer 69