December 2011
Intermediate to advanced
436 pages
18h 7m
English
book
Real-Time Digital Signal Processing from MATLAB® to C with the TMS320C6x DSPs, Second Edition, 2nd Edition
by Thad B. Welch, Cameron H.G. Wright, Michael G. Morrow
Content preview from Real-Time Digital Signal Processing from MATLAB® to C with the TMS320C6x DSPs, Second Edition, 2nd Edition
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382 APPENDIX F. PROGRAMMING PERILS AND PITFALLS
Listing F.2: Checking for real-time schedule failure using the interrupt flags register.
Uint32 Overrun =0;
2
interrupt void MyISR ()
4 {
// your ISR code here
6 if( IFR &0x00001000 ) { // check if INT12 is pending
Overrun++; // if so, increment the count
8 }
}
F.7 Variable Initialization
In the C programming language, declaring a variable does not automatically cause that
variable to be initialized to a known value. In general, variables must always be set to a
value before they are evaluated in a C program. This does not mean that they need to
be initialized in the declaration, as long as they are written
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