demo.c

// gcc -o demo demo.c api.c usb.c -L. -lhidapi-libusb -lrt -lusb-1.0 -ldlpspec -lm -fno-stack-protector
#include <stdio.h>
#include "common.h"
#include "usb.h"
#include "api.h"

int main()
{
  USB_Init();

  if(USB_Open() <0 )
  {
    printf("Failed to open USB device\n");
    return -1;
  }

  DEBUG_PRINT printf("Pointer to USB Handle %p\n", USB_getDeviceHandle());

  DEBUG_PRINT {
    int amb, det;
    if(FAIL == NNO_ReadTemp(&amb, &det))
    {
      printf("Failed to read temperature\n");
      goto fail;
    }
    printf("Amb: %f, Det: %f\n",(double)amb/100, (double)det/100);
  }

  DEBUG_PRINT {
    printf("No. of scan configurations present: %d\n",NNO_GetNumScanCfg());
    printf("Current active scan configuration: %d\n",NNO_GetActiveScanIndex());

    int size = sizeof(scanConfig)*2;
    void* buf = malloc(size);
    if(FAIL == NNO_GetScanCfg(1, buf, &size))
    {
      printf("Failed to read active scan configuration\n");
      goto fail;
    }
    dlpspec_scan_read_configuration(buf, size);
    scanConfig * scanConfig_buffer = (scanConfig*)buf;
    printf("Num Patterns: %d\n",scanConfig_buffer->num_patterns);
    printf("WL Start: %d nm\n",scanConfig_buffer->wavelength_start_nm);
    printf("WL End: %d nm\n",scanConfig_buffer->wavelength_end_nm);
    printf("Num repeats: %d\n",scanConfig_buffer->num_repeats);
  }

  // NNO_SetActiveScanIndex(1);

  // @param Store in SD Card
  NNO_PerformScan(false);

  int status;
  do {
    status = NNO_GetScanComplete();
    sleep(1);
  }while(status == 0);

  int scan_result_bytes = NNO_GetFileSizeToRead(NNO_FILE_SCAN_DATA);
  if(scan_result_bytes <= 0)
  {
    printf("An error occured while reading file size\n");
    goto fail;
  }
  DEBUG_PRINT printf("Result File Size: %d\n", scan_result_bytes);

  unsigned char * scan_data = malloc(scan_result_bytes);
  int bytes_read;

  bytes_read = NNO_GetFile((unsigned char *)scan_data, scan_result_bytes);
  if(bytes_read != scan_result_bytes)
  {
    printf("Received data is not equal to file size\n");
    goto fail;
  }

  scanResults scan_result;

  /*
  FILE *handle;
  handle = fopen("record.dat","w");
  fwrite(bin_data, 1, scan_result_bytes, handle);
  */

  int ret = dlpspec_scan_interpret(scan_data, bytes_read, &scan_result);
  if(DLPSPEC_PASS != ret)
  {
    printf("Failed to interpret data\n");
    goto fail;
  }

  DEBUG_PRINT {
    printf("Scan Name: %s\n", scan_result.scan_name);
    printf("Scan Index ID: %d\n",scan_result.scanDataIndex);
    // printf("Num of valid elements: %d\n", scan_result.length); This is 0 always.
  }

  printf("Wavelenth[X],Intensity[X]\n");
  for(int i=0; i<ADC_DATA_LEN; i++)
  {
    if(scan_result.wavelength[i]>=899 && scan_result.wavelength[i] <=1701)
      //printf("%f,%d\n",scan_result.wavelength[i],scan_result.intensity[i]);
    if(scan_result.wavelength[i] > 1701)
      break;
  }



  USB_Close();
  return 0;

fail:
  USB_Close();
  return -1;
}