86 lines
1.7 KiB
C
86 lines
1.7 KiB
C
#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <signal.h>
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void bail();
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void sig_handler(int signum);
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int src = -1;
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int main(int argc, char *argv[]){
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if (argc != 2){
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fprintf(stderr,"USAGE:\n %s source-file\n", argv[0]);
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return -1;
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}
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// Register Signal Handler
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signal(SIGINT, sig_handler);
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signal(SIGTERM, sig_handler);
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// Open Destination File
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src = open(argv[1], O_RDONLY);
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if(src == -1){
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perror("Failed to open file");
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bail();
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return -1;
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}
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char buffer[8];
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char* buffer_p;
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uint16_t* data;
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size_t cnt, bufflen;
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while(1){
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buffer_p = buffer;
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cnt = 0;
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bufflen = 8;
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do {
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cnt = read(src, buffer_p, bufflen);
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buffer_p += cnt;
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bufflen -= cnt;
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//No data available, wait and retry
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if(cnt == 0){
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usleep(500000);
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continue;
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}
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//Error, bail out
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else if(cnt < 0){
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perror("Read failed");
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bail();
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return -1;
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}
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} while (bufflen > 0);
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data = buffer;
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printf("\nADC_DATA2_MAX: %u\nADC_DATA1_MAX: %u\nSCALER_MAX: %u\nDAC_MAX: %u\n", data[0], data[1], data[2], data[3]);
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/* uint64_t* test = buffer;*/
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/* printf("DATA: %llX\n", test[0]);*/
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}
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//Never Reached
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bail();
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return -1;
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}
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void bail(){
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if(src != -1){
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(void)close(src);
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}
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}
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void sig_handler(int signum){
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printf("Caught signal %d, terminating\n", signum);
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bail();
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exit(0);
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}
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