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Hello, I have a C6711 DSK and want to use intrinsics in my code. I tried to use a simple _mpy in the audio.c file of the audio.pjt (the example in the dsk6711\bios\audio folder). ... static Void process(Uns *src, Int size, Uns *dst) { Int i; Uns scale = 2; // added code for (i = size - 1; i >= 0; i--) { dst[i] = _mpyu(src[i],scale); // changed code } /* if hostPipe is non-NULL write data to this pipe */ if (hostPipe != NULL) { writeBuf(hostPipe, dst, size); } } ... If I use a sine wave as input, the amplitude of the output sine is varing sinusoidal. I tried to change the data types for scale and src[]. Using a different _mpy intrinsic yields the same result. How should I use the intrinsics to get the correct result? Do I have to use or change certain compiler options? Thanks in advance! Stefan Tertinek |
using intrinsics
Started by ●May 27, 2003
