devices work

project/TODO.md

@@ -0,0 +1,2 @@
+- [ ] Автоматическое подключение генератора
+- [ ] Автоматическая резонансная кривая (данные в файл)

project/hardware/Generator.cpp

@@ -1,14 +1,33 @@
 #include "Generator.hpp"
 
+#include <string>
+#include <vector>
 #include <fstream>
+#include <filesystem>
+
+namespace fs = std::filesystem;
 
 Generator::Generator() : m_channel("C1")
 {
-    std::string response = query("*IDN?");
-    response.erase(0, response.find(',') + 1);
-    response.erase(response.find(','));
+    auto devices_path = files_path("/dev/usbtmc");
+    bool success = false;
 
-    // name = response;
+    for (auto const &device_path : devices_path)
+    {
+        m_root_path = device_path;
+        std::string response = query("*IDN?");
+        response.erase(0, response.find(',') + 1);
+        response.erase(response.find(','));
+
+        if (response == "AKIP-3409-4")
+        {
+            success = true;
+            break;
+        }
+    }
+
+    if (!success)
+        throw std::runtime_error("Generator (AKIP-3409-4) is not available!");
 }
 
 void Generator::command(std::string const &comm) const

project/hardware/Utils.hpp

@@ -1,10 +1,36 @@
 #pragma once
 
+#include <string>
+#include <vector>
+#include <filesystem>
+
+namespace fs = std::filesystem;
+
+using port_t = std::size_t;
+using ind_t = std::size_t;
+
 enum class channels
 {
     C1 = 1,
     C2 = 2
 };
 
-using port_t = std::size_t;
-using ind_t = std::size_t;
+std::vector<std::string> files_path(std::string const &path)
+{
+    size_t file_ind = path.find_last_of('/') + 1;
+    std::string directory = path;
+    directory.erase(file_ind);
+
+    auto directory_iterator = fs::directory_iterator(directory);
+    std::vector<std::string> files_path;
+
+    for (const auto &directory_entry : directory_iterator)
+    {
+        auto filename = std::string(directory_entry.path());
+        std::cout << filename << std::endl;
+        if (!filename.find(path))
+            files_path.push_back(filename);
+    }
+
+    return files_path;
+}

project/hardware/main.cpp

@@ -2,6 +2,12 @@
 #include "Oscilloscope.hpp"
 #include "Utils.hpp"
 
+template <typename T>
+void func(T arg)
+{
+
+}
+
 int main()
 {
 	

project/materials/u02/build.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+gcc gds.c -o gds -g

project/materials/u02/gds.c

@@ -0,0 +1,473 @@
+#include <stdio.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <termios.h>
+#include <unistd.h>
+#include <sys/select.h>
+#include <sys/time.h>
+#include <getopt.h>
+
+// Actually I don't know if oscilloscope tty is freely accessible by conventional users
+#define SETUID
+
+#define GDS_BUFFER_LENGTH   1400026
+
+char gds_buffer[GDS_BUFFER_LENGTH];
+int gds_buffer_length;
+
+#define ERR_DEVICE_OPEN    -1
+#define ERR_DEVICE_READ    -2
+#define ERR_INP_FILE_OPEN  -3
+#define ERR_OUT_FILE_OPEN  -4
+#define ERR_INV_CHANNEL    -5
+
+struct record
+{
+  char *keyword;
+  char *value;
+};
+
+// -------------------------------------------------------------------------
+#define GDS_OPT_HELP    'h'
+#define GDS_OPT_ASCII   'a'
+#define GDS_OPT_BINARY  'b'
+#define GDS_OPT_CONVERT 'c'
+#define GDS_OPT_ACQUIRE 'g'
+#define GDS_OPT_NO_HDR  'r'
+#define GDS_OPT_INPUT   'i'
+#define GDS_OPT_OUTPUT  'o'
+#define GDS_OPT_DEVICE  'd'
+#define GDS_OPT_CHANNEL 'n'
+
+static const struct option gds_long_opt[] =
+{
+  {"help",    no_argument,       NULL, GDS_OPT_HELP},
+  {"ascii",   no_argument,       NULL, GDS_OPT_ASCII},
+  {"binary",  no_argument,       NULL, GDS_OPT_BINARY},
+  {"convert", no_argument,       NULL, GDS_OPT_CONVERT},
+  {"acquire", no_argument,       NULL, GDS_OPT_ACQUIRE},
+  {"no-hdr",  no_argument,       NULL, GDS_OPT_NO_HDR},
+  {"input",   required_argument, NULL, GDS_OPT_INPUT},
+  {"output",  required_argument, NULL, GDS_OPT_OUTPUT},
+  {"device",  required_argument, NULL, GDS_OPT_DEVICE},
+  {"channel", required_argument, NULL, GDS_OPT_CHANNEL},
+  {0,0,0,0}
+};
+
+static const char* gds_opt_str = "abcghri:o:d:n:";
+
+// -------------------------------------------------------------------------
+double gds_scan_double_key(char *str, struct record *keys, int max_keys)
+{
+  int curr_key;
+  double result;
+  for (curr_key = 0; curr_key < max_keys; curr_key++)
+  {
+    if (!strcmp(keys[curr_key].keyword, str))
+    {
+      sscanf(keys[curr_key].value, "%lf", &result);
+      return result;
+    }
+  }
+  return 0;
+}
+
+// -------------------------------------------------------------------------
+int gds_scan_int_key(char *str, struct record *keys, int max_keys)
+{
+  int curr_key;
+  int result;
+  for (curr_key = 0; curr_key < max_keys; curr_key++)
+  {
+    if (!strcmp(keys[curr_key].keyword, str))
+    {
+      sscanf(keys[curr_key].value, "%d", &result);
+      return result;
+    }
+  }
+  return 0;
+}
+
+// -------------------------------------------------------------------------
+int gds_acquire(char *dev_file_name, int channel_number)
+{
+  int dev_fd;
+  int error;
+#ifdef SETUID
+  int old_uid, old_gid;
+  int uid_changed = 0;
+#endif // SETUID
+  struct termios old_dev_tio, new_dev_tio;
+
+  fd_set dev_read_fds;
+  struct timeval dev_tv;
+
+  char *dev_cmd_read_request = (channel_number == 1) ? "C1:WF? DAT2\n" : "C2:WF? DAT2\n";
+
+  int dev_data_index = 0;
+  int dev_read_len;
+
+#ifdef SETUID
+  if ((dev_fd = open(dev_file_name, O_RDWR | O_NOCTTY)) < 0) // check if we have permissions
+  {
+    old_uid = getuid(); old_gid = getgid();
+    if (setuid(0) || setgid(0))
+    {
+      fprintf(stderr, "**Error**: You have no permissions to access \"%s\"\n"
+                      "           Setting UID and GID to root failed\n", dev_file_name);
+      return ERR_DEVICE_OPEN;
+    }
+    
+    uid_changed = 1;
+    // already root:wheel
+    if ((dev_fd = open(dev_file_name, O_RDWR | O_NOCTTY)) < 0)
+    {
+      fprintf(stderr, "**Error**: Error opening device \"%s\"\n", dev_file_name);
+      setuid(old_uid); setgid(old_gid);
+      return ERR_DEVICE_OPEN;
+    }
+  }
+#else // SETUID
+  if ((dev_fd = open(dev_file_name, O_RDWR | O_NOCTTY)) < 0)
+  {
+    fprintf(stderr, "**Error**: Error opening device \"%s\"\n", dev_file_name);
+    return ERR_DEVICE_OPEN;
+  }
+#endif // SETUID
+
+  tcgetattr(dev_fd, &old_dev_tio);
+  bzero(&new_dev_tio, sizeof(new_dev_tio));
+  new_dev_tio.c_cflag = B115200 | CS8 | CLOCAL | CREAD;
+  new_dev_tio.c_iflag = IGNBRK | IXON | IXOFF;
+  new_dev_tio.c_oflag = 0;
+  new_dev_tio.c_lflag = 0;
+  new_dev_tio.c_cc[VTIME] = 5;
+  new_dev_tio.c_cc[VMIN] = 1;
+  new_dev_tio.c_ispeed = 13;
+  new_dev_tio.c_ospeed = 13;
+  tcflush(dev_fd, TCIFLUSH);
+  tcsetattr(dev_fd, TCSANOW, &new_dev_tio);
+
+  write(dev_fd, dev_cmd_read_request, strlen(dev_cmd_read_request));
+
+  FD_ZERO(&dev_read_fds);
+  FD_SET(dev_fd, &dev_read_fds);
+
+  while (1)
+  {
+    dev_tv.tv_sec = 0;
+    dev_tv.tv_usec = 200000;
+    error = select(dev_fd + 1, &dev_read_fds, NULL, NULL, &dev_tv);
+    switch(error)
+    {
+       case -1:
+         fprintf(stderr, "**Error**: Error reading from device: select() failed with errorcode %d\n", error);
+         close(dev_fd);
+         return ERR_DEVICE_READ;
+       case 0:
+         close(dev_fd);
+         gds_buffer_length = dev_data_index;
+#ifdef SETUID
+         if (uid_changed)  // reset uid/gid to create files belonging to current user but not root
+         {
+           setuid(old_uid);
+           setgid(old_gid);
+         }
+#endif
+         return 0;
+       default:
+         dev_read_len = read(dev_fd, gds_buffer + dev_data_index, GDS_BUFFER_LENGTH - dev_data_index);
+         dev_data_index += dev_read_len;
+    }
+  }
+  
+}
+
+// -------------------------------------------------------------------------
+int gds_save_binary_file(char *filename)
+{
+  int out_fd;
+
+  if ((out_fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC)) < 0)
+  {
+    fprintf(stderr, "**Error**: Error opening output file %s\n", filename);
+    return ERR_OUT_FILE_OPEN;
+  } else
+  {
+    fchmod(out_fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH ); // set 644 mode
+    write(out_fd, gds_buffer, gds_buffer_length);
+    close(out_fd);
+    return 0;
+  }
+}
+
+// -------------------------------------------------------------------------
+int gds_read_binary_file(char *filename)
+{
+  int in_fd;
+
+  if ((in_fd = open(filename, O_RDONLY)) == 0)
+  {
+    fprintf(stderr, "**Error**: Error opening data file \"%s\"\n", filename);
+    return ERR_INP_FILE_OPEN;
+  } else
+  {
+    gds_buffer_length = read(in_fd, gds_buffer, GDS_BUFFER_LENGTH);
+    close(in_fd);
+    return 0;
+  }
+}
+
+// -------------------------------------------------------------------------
+int gds_save_ascii_file(char *filename, int header_flag)
+{
+  #define MAX_KEYS  30
+  struct record keys[MAX_KEYS];
+  char *data_ptr;
+  int i, header_length, curr_key, max_keys, max_key_len;
+  double curr_time;
+  FILE *out_file;
+
+  union {
+    short s;
+    char b[2];
+  } short_val;
+
+  int Memory_Length;
+  double Vertical_Scale;
+  double Horizontal_Position;
+  double Sampling_Period;
+  
+  if (( out_file = fopen(filename, "wt")) == NULL)
+  {
+    printf("**Error**: Error opening output file \"%s\"\n", filename);
+    return ERR_OUT_FILE_OPEN;
+  } else
+  {
+    for(i = 0; i < GDS_BUFFER_LENGTH; i++)
+    {
+      if (gds_buffer[i] == 10)
+      {
+        gds_buffer[i] = 0;
+        header_length = i;
+        break;
+      }
+    }
+    
+    for (curr_key = 0; curr_key < MAX_KEYS; curr_key++)
+    {
+      keys[curr_key].keyword = NULL;
+      keys[curr_key].value = NULL;
+    }
+    
+    i = 0;
+    for(curr_key = 0; curr_key < MAX_KEYS; curr_key++)
+    {
+      keys[curr_key].keyword = gds_buffer + i;
+      for( ; ; i++)
+      {
+        if (gds_buffer[i] == 0)
+        {
+          max_keys = curr_key;
+          goto keys_done;
+        }
+        if (gds_buffer[i] == ',')
+        {
+          keys[curr_key].value = gds_buffer + i + 1;
+          gds_buffer[i] = 0;
+        }
+        if (gds_buffer[i] == ';')
+        {
+          keys[curr_key + 1].keyword = gds_buffer + i + 1;
+          gds_buffer[i] = 0;
+          i++;
+          break;
+        }
+      }
+    }
+keys_done:
+
+    if (header_flag) // put header
+    {
+      max_key_len = 0;
+      for (curr_key = 0; curr_key < max_keys; curr_key++)
+      {
+        if (strlen(keys[curr_key].keyword) > max_key_len)
+        {
+          max_key_len = strlen(keys[curr_key].keyword);
+        }
+      }
+    
+      for (curr_key = 0; curr_key < max_keys; curr_key++)
+      {
+        fprintf(out_file, "# \"%s\" ", keys[curr_key].keyword);
+        for (i = 0; i < max_keys - strlen(keys[curr_key].keyword); i++)
+        {
+          fprintf(out_file, " ");
+        }
+        fprintf(out_file, "\"%s\"\n", keys[curr_key].value ? keys[curr_key].value : "");
+      }
+      fprintf(out_file, "\n");
+    }
+
+    Memory_Length       = gds_scan_int_key   ("Memory Length",       keys, max_keys);
+    Vertical_Scale      = gds_scan_double_key("Vertical Scale",      keys, max_keys);
+    Horizontal_Position = gds_scan_double_key("Horizontal Position", keys, max_keys);
+    Sampling_Period     = gds_scan_double_key("Sampling Period",     keys, max_keys);
+
+    curr_time = -(double)Memory_Length * Sampling_Period / 2.0 + Horizontal_Position;
+    
+    data_ptr = gds_buffer + header_length + 10; // skip #72000000
+    fprintf(out_file, "# Time, s\tReading, raw\tReading, V\n");
+    for (i = 0; i < Memory_Length; i++)
+    {
+      short_val.b[0] = data_ptr[2*i+1];
+      short_val.b[1] = data_ptr[2*i];
+      fprintf(out_file, "%le\t%d\t\t%le\n", curr_time, short_val.s, short_val.s * Vertical_Scale * 10.0 / 256.0);
+      curr_time += Sampling_Period;
+    }
+    
+    fclose(out_file);
+    return 0;
+  }
+}
+
+// -------------------------------------------------------------------------
+void usage(void)
+{
+#ifdef SETUID
+  #define SETUID_STATE "SETUID"
+#else // SETUID
+  #define SETUID_STATE
+#endif // SETUID
+  printf("gds [-abcgh] [-i <filename>] [-o <filename>] [-d <devname>]\n"
+  "GDS-72302 oscilloscope data retrieving program " SETUID_STATE "\n"
+  "(C) S. Ambrozevich <s.ambrozevich@mail.ru>, LPI\n"
+  "v. 0.3 compiled " __DATE__ " " __TIME__ "\n\n"
+  "Options:\n"
+  "  -c, --convert       - convert previously saved binary data to ASCII form\n"
+  "  -g, --acquire       - gather data from oscilloscope (default)\n"
+  "  -r, --no-hdr        - do not store header information in ASCII output\n"
+  "  -a, --ascii         - generate output in ASCII form\n"
+  "  -b, --binary        - generate output in binary form (raw data)\n"
+  "  -i, --input=file    - input file to convert, default = stdin\n"
+  "  -o, --output=file   - output file to store data, default = stdout\n"
+  "  -d, --device=dev    - device tty to communicate with, default = /dev/ttyACM0\n"
+  "  -n, --channel=n     - channel number <1|2> to acquire, default = 2\n"
+  "  -h, --help          - prints this help\n\n"
+  "NOTE: \"gds -cb\" will only copy input binary stream to output\n");
+}
+
+// -------------------------------------------------------------------------
+int main(int argc, char **argv)
+{
+  int errorcode;
+  int ascii_flag = 1;
+  int convert_flag = 0;
+  int header_flag = 1;
+  int input_file_flag = 0;
+  int output_file_flag = 0;
+  int device_file_flag = 0;
+  int channel_number = 2;
+  int opt, opt_ind;
+
+  char *input_file;
+  char *output_file;
+  char *device_file;
+
+  if (argc == 1)
+  {
+    usage();
+    return 0;
+  }
+
+  while ((opt = getopt_long(argc, argv, gds_opt_str, gds_long_opt, NULL)) != -1)
+  {
+    switch(opt)
+    {
+      case GDS_OPT_ASCII: 
+        ascii_flag = 1;
+        break;
+
+      case GDS_OPT_BINARY:
+        ascii_flag = 0;
+        break;
+
+      case GDS_OPT_CONVERT:
+        convert_flag = 1;
+        break;
+
+      case GDS_OPT_ACQUIRE: 
+        convert_flag = 0;
+        break;
+
+      case GDS_OPT_NO_HDR:
+        header_flag = 0;
+        break;
+
+      case GDS_OPT_DEVICE:
+        device_file_flag = 1;
+        device_file = optarg;
+        break;
+
+      case GDS_OPT_INPUT: 
+        input_file_flag = 1;
+        input_file = optarg;
+        break;
+
+      case GDS_OPT_OUTPUT:
+        output_file_flag = 1;
+        output_file = optarg;
+        break;
+
+      case GDS_OPT_CHANNEL:
+        sscanf(optarg, "%d", &channel_number);
+        if ((channel_number < 1) || (channel_number > 2))
+        {
+          fprintf(stderr, "**Error**: Invalid channel number %d\n", channel_number);
+          return ERR_INV_CHANNEL;
+        }
+        break;
+
+      default:
+        usage();
+        return 0;
+    }
+  }
+
+  argc -= optind;
+  argv += optind;
+
+  if (convert_flag)
+  { // convert
+    if (errorcode = gds_read_binary_file(input_file_flag ? input_file : "/dev/stdin") != 0)
+    {
+      return errorcode;
+    }
+  } else
+  { // read
+    if (errorcode = gds_acquire(device_file_flag ? device_file : "/dev/ttyACM0", channel_number) != 0)
+    {
+      return errorcode;
+    }
+  }
+
+  if (ascii_flag)
+  { // write ascii
+    if (errorcode = gds_save_ascii_file(output_file_flag ? output_file : "/dev/stdout", header_flag) != 0)
+    {
+      return errorcode;
+    }
+  } else
+  { // write binary
+    if (errorcode = gds_save_binary_file(output_file_flag ? output_file : "/dev/stdout") != 0)
+    {
+      return errorcode;
+    }
+  }
+ 
+  return 0;
+}
+

project/materials/u02/out.txt

@@ -0,0 +1,2 @@
+
+# Time, s	Reading, raw	Reading, V

project/materials/u02/shorten.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+#works only for ascii files with headers
+#prints every 100th line
+cat $1 | sed '1,/Waveform/d' | awk '!(NR%100)||(NR==2)'> $2