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Original file line number | Diff line number | Diff line change |
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#!/bin/bash | ||
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gcc -o test test.c -I../../include -lpm3rrg_rdv4 -L../build -lpthread | ||
gcc -o test_grab test_grab.c -I../../include -lpm3rrg_rdv4 -L../build -lpthread |
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Original file line number | Diff line number | Diff line change |
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#!/bin/bash | ||
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LD_LIBRARY_PATH=../build ./test_grab |
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#include "pm3.h" | ||
#include <stdio.h> | ||
#include <stdlib.h> | ||
#include <string.h> | ||
#include <unistd.h> | ||
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int main(int argc, char *argv[]) { | ||
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int pipefd[2]; | ||
char buf[8196 + 1]; | ||
size_t n; | ||
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if (pipe(pipefd) == -1) { | ||
exit(-1); | ||
} | ||
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int pid = fork(); | ||
if (pid == -1) { | ||
perror("fork"); | ||
exit(-1); | ||
} | ||
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// child | ||
if (pid == 0) { | ||
printf("[INFO] inside child\n"); | ||
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// Redirect stdout to the write end of the pipe | ||
dup2(pipefd[1], STDOUT_FILENO); | ||
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close(pipefd[0]); // Child: close read end of the pipe | ||
close(pipefd[1]); // Close original write end | ||
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pm3 *p; | ||
p = pm3_open("/dev/ttyS9"); | ||
//printf("Device: %s\n", pm3_name_get(p)); | ||
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// Execute the command | ||
pm3_console(p, "hw status"); | ||
pm3_close(p); | ||
_exit(-1); | ||
} else { | ||
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printf("[INFO] inside parent\n"); | ||
// Parent: close write end of the pipe | ||
close(pipefd[1]); | ||
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// Read from the pipe | ||
while (1) { | ||
n = read(pipefd[0], buf, sizeof(buf)); | ||
if (n == -1) { | ||
continue; | ||
} | ||
if (n == 0) { | ||
break; | ||
} else { | ||
// null termination | ||
buf[n] = 0; | ||
if (strstr(buf, "Unique ID") != NULL) { | ||
printf("%s", buf); | ||
} | ||
} | ||
} | ||
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// Close read end | ||
close(pipefd[0]); | ||
} | ||
} |
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