diff options
| -rw-r--r-- | ports/atmel-samd/common-hal/audiobusio/PDMIn.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/ports/atmel-samd/common-hal/audiobusio/PDMIn.c b/ports/atmel-samd/common-hal/audiobusio/PDMIn.c index 3c9ec05c2..8911aef2f 100644 --- a/ports/atmel-samd/common-hal/audiobusio/PDMIn.c +++ b/ports/atmel-samd/common-hal/audiobusio/PDMIn.c @@ -337,7 +337,11 @@ const uint16_t sinc_filter [OVERSAMPLING] = { 94, 63, 39, 21, 9, 2, 0, 0 }; -#define REPEAT_16_TIMES(X) X X X X X X X X X X X X X X X X +#ifdef SAMD21 +#define REPEAT_16_TIMES(X) do { for(uint8_t j=0; j<4; j++) { X X X X } } while (0) +#else +#define REPEAT_16_TIMES(X) do { X X X X X X X X X X X X X X X X } while(0) +#endif static uint16_t filter_sample(uint32_t pdm_samples[4]) { uint16_t running_sum = 0; @@ -354,7 +358,7 @@ static uint16_t filter_sample(uint32_t pdm_samples[4]) { filter_ptr++; pdm_sample <<= 1; } - ) + ); } return running_sum; } |