Hi All,
I have updated the image which is running of SD card
root@beaglebone:/tmp# uname -a
Linux beaglebone 4.4.84-ti-r120 #1 SMP Sun Aug 27 03:11:07 UTC 2017 armv7l
GNU/Linux
have a very simple cpp program which used to work, and now doesn't; when
running gives error
"./adctest: error while loading shared libraries: libprussdrv.so: cannot
open shared object file: No such file or directory "
Any Help would be greatly appreciated
Warm Regards,
MB
//#define ultrasonic1 0
//#define ultrasonic2 1
//#define ultrasonic3 3
#include <iostream>
#include <fstream>
#include <string>
#include <iomanip>
#include <bitset>
using namespace std;
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
int main()
{
const char *ultrasonic1 =
"/sys/bus/iio/devices/iio:device0/in_voltage0_raw";
const char *ultrasonic2 =
"/sys/bus/iio/devices/iio:device0/in_voltage1_raw";
const char *ultrasonic3 =
"/sys/bus/iio/devices/iio:device0/in_voltage2_raw";
int fd, len, ultrasonic1reading,ultrasonic2reading,
ultrasonic3reading;
unsigned long count = 0;
unsigned long errorcount = 0;
char adc[5] = {0};
while(1){
fd = open(ultrasonic1, O_RDONLY|O_NONBLOCK);
if(fd == -1){
printf("error: %s %d\n", strerror(errno),
errno);
printf(" Cannot open file");
errorcount++;
exit(1);
}
len = read(fd, adc, sizeof(adc - 1));
if(len == -1){
close(fd);
printf(" error with read data ");
errorcount++;
continue;
}
else if(len == 0){
printf("%s\n", "buffer is empty");
errorcount++;
}
else{
adc[len] ='\0';
cout << " 3 ";
printf("%s ", adc);
}
close(fd);
cout << "count is " << count << " errors " <<errorcount
<< '\n';
count++;
}
return 0;
}
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