Compiler/MSP430F5529: How to input 64-bit string data from user ?

Hello Soumit,

The MSP430F5529 features a 32-bit x 32-bit hardware multiplier module (MPY32) and the CCS compiler does support 64-bit (long long, signed or unsigned) data types. This is shown in Table 5-1 in the MSP430 Optimizing C/C++ Compiler v17.9.0.STS User's Guide.

For your application, you may be interested in the Fixed Point Math Library (MSP-IQMATHLIB).

Regards,

James

MSP Customer Applications

Hello,

Thanks for your immediate response. I would try the fixed point math library for my application. It is quite helpful. One query still is the use of strings. While writing the C- code in Visual Studio i used string data type to input frequencies from the user. But in MSP430 while implementing it I found that string datatype is not supported nor "strtod" function. I have posted the code I wrote. Please can you help in how should I implement in MSP430.

 /* User has to give the i/o values */
 cout << "Please provide (in MHz) input Ref frequency : ";
  string inputVal;
  cin >> inputVal;

  char *inStr1 = new char[inputVal.length() + 1];
  strcpy_s(inStr1, inputVal.length() + 1, inputVal.c_str());
  char *endptr1;
  char* loc1 = strchr(inStr1, '.');
  int count1 = 0;
  if (loc1 != NULL)
  {
    long int mantissa1 = strtod(loc1 + 1, &endptr1);                       //seperates the mantissa part from the decimal number eg: 23.456 : mantissa 456
    long int whole1 = strtod(inStr1, &endptr1);                            //seperates the whole part from the decimal number eg: 23.456 : whole 23
    long int var1 = mantissa1;
}