Merge pull request #339 from FrankBoesing/DMAMEM-alignment

Dmamem alignment

input_adc.cpp

 
 #define COEF_HPF_DCBLOCK    (1048300<<10)  // DC Removal filter coefficient in S1.30
 
-DMAMEM static uint16_t analog_rx_buffer[AUDIO_BLOCK_SAMPLES];
+DMAMEM __attribute__((aligned(32))) static uint16_t analog_rx_buffer[AUDIO_BLOCK_SAMPLES];
 audio_block_t * AudioInputAnalog::block_left = NULL;
 uint16_t AudioInputAnalog::block_offset = 0;
 int32_t AudioInputAnalog::hpf_y1 = 0;
 	transmit(out_left);
 	release(out_left);
 }
-#endif
+#endif

input_adcs.cpp

 
 #define COEF_HPF_DCBLOCK    (1048300<<10)  // DC Removal filter coefficient in S1.30
 
-DMAMEM static uint16_t left_buffer[AUDIO_BLOCK_SAMPLES];
-DMAMEM static uint16_t right_buffer[AUDIO_BLOCK_SAMPLES];
+DMAMEM __attribute__((aligned(32))) static uint16_t left_buffer[AUDIO_BLOCK_SAMPLES];
+DMAMEM __attribute__((aligned(32))) static uint16_t right_buffer[AUDIO_BLOCK_SAMPLES];
 audio_block_t * AudioInputAnalogStereo::block_left = NULL;
 audio_block_t * AudioInputAnalogStereo::block_right = NULL;
 uint16_t AudioInputAnalogStereo::offset_left = 0;

input_pdm.cpp

 // but its performance should be *much* better than the rapid passband rolloff
 // of Cascaded Integrator Comb (CIC) or moving average filters.
 
-DMAMEM static uint32_t pdm_buffer[AUDIO_BLOCK_SAMPLES*4];
+DMAMEM __attribute__((aligned(32))) static uint32_t pdm_buffer[AUDIO_BLOCK_SAMPLES*4];
 static uint32_t leftover[14];
 audio_block_t * AudioInputPDM::block_left = NULL;
 bool AudioInputPDM::update_responsibility = false;

output_adat.cpp

 bool AudioOutputADAT::update_responsibility = false;
 //uint32_t  AudioOutputADAT::vucp = VUCP_VALID;
 
-DMAMEM static uint32_t ADAT_tx_buffer[AUDIO_BLOCK_SAMPLES * 8]; //4 KB, AUDIO_BLOCK_SAMPLES is usually 128
+DMAMEM __attribute__((aligned(32))) static uint32_t ADAT_tx_buffer[AUDIO_BLOCK_SAMPLES * 8]; //4 KB, AUDIO_BLOCK_SAMPLES is usually 128
 
 DMAChannel AudioOutputADAT::dma(false);
 

output_dac.cpp

 
 #if defined(__MK20DX256__) || defined(__MK64FX512__) || defined(__MK66FX1M0__)
 
-DMAMEM static uint16_t dac_buffer[AUDIO_BLOCK_SAMPLES*2];
+DMAMEM __attribute__((aligned(32))) static uint16_t dac_buffer[AUDIO_BLOCK_SAMPLES*2];
 audio_block_t * AudioOutputAnalog::block_left_1st = NULL;
 audio_block_t * AudioOutputAnalog::block_left_2nd = NULL;
 bool AudioOutputAnalog::update_responsibility = false;

output_dacs.cpp

 
 #if defined(__MK64FX512__) || defined(__MK66FX1M0__)
 
-DMAMEM static uint32_t dac_buffer[AUDIO_BLOCK_SAMPLES*2];
+DMAMEM __attribute__((aligned(32))) static uint32_t dac_buffer[AUDIO_BLOCK_SAMPLES*2];
 audio_block_t * AudioOutputAnalogStereo::block_left_1st = NULL;
 audio_block_t * AudioOutputAnalogStereo::block_left_2nd = NULL;
 audio_block_t * AudioOutputAnalogStereo::block_right_1st = NULL;

output_pt8211.cpp

 uint16_t  AudioOutputPT8211::block_right_offset = 0;
 bool AudioOutputPT8211::update_responsibility = false;
 #if defined(AUDIO_PT8211_OVERSAMPLING)
-	static uint32_t i2s_tx_buffer[AUDIO_BLOCK_SAMPLES*4];
+DMAMEM __attribute__((aligned(32))) static uint32_t i2s_tx_buffer[AUDIO_BLOCK_SAMPLES*4];
 #else
-	static uint32_t i2s_tx_buffer[AUDIO_BLOCK_SAMPLES];
+DMAMEM __attribute__((aligned(32))) static uint32_t i2s_tx_buffer[AUDIO_BLOCK_SAMPLES];
 #endif
 DMAChannel AudioOutputPT8211::dma(false);
 

output_pt8211_2.cpp

 uint16_t  AudioOutputPT8211_2::block_right_offset = 0;
 bool AudioOutputPT8211_2::update_responsibility = false;
 #if defined(AUDIO_PT8211_OVERSAMPLING)
-	static uint32_t i2s_tx_buffer[AUDIO_BLOCK_SAMPLES*4];
+DMAMEM __attribute__((aligned(32))) static uint32_t i2s_tx_buffer[AUDIO_BLOCK_SAMPLES*4];
 #else
-	static uint32_t i2s_tx_buffer[AUDIO_BLOCK_SAMPLES];
+DMAMEM __attribute__((aligned(32))) static uint32_t i2s_tx_buffer[AUDIO_BLOCK_SAMPLES];
 #endif
 DMAChannel AudioOutputPT8211_2::dma(false);