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RTOS/CC2650: ADPCM Codec issue

PROSPERO LOMBARDI
Intellectual 395 points

Part Number: CC2650

Tool/software: TI-RTOS

Hi,

I would like to inform TI experts that the ADPCM codec provided with TIRTOS for CC2650 (C:\ti\tirtos_cc13xx_cc26xx_2_21_01_08\products\tidrivers_cc13xx_cc26xx_2_21_01_01\packages\ti\drivers\pdm\Codec1.c)

probably contains a bug. The Issue is at line 101 "int16_t difference = audSample - Codec1_pvEnc; ". it should be modified in " int32_t difference = (int32_t)audSample - (int32_t)Codec1_pvEnc;" since In case the difference exceed (2^16-1)/2 the coded values are wrong.

In case, It would be nice to have a fix in future releases.

regards

Prospero