27 lines
945 B
C
27 lines
945 B
C
#ifndef __SPI_CODEC_H__
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#define __SPI_CODEC_H__
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#include <stdint.h>
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#define SPI_CODEC_FREQ 13000000
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/**************************************** sigmaDelta *********************************/
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#define TIME_MS 20
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#define TOTAL_CHAIN_BUFFER_SIZE (SPI_CODEC_FREQ / 8 / 1000 * TIME_MS * 2)
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#define HALF_CHAIN_BUFFER_SIZE (TOTAL_CHAIN_BUFFER_SIZE / 2)
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#define ONE_CHAIN_BUFFER_SIZE 8000 // TOTAL_CHAIN_BUFFER_SIZE / ONE_CHAIN_BUFFER_SIZE = TOTAL_CHAIN_COUNT
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#define TOTAL_CHAIN_COUNT 8 // TOTAL_CHAIN_BUFFER_SIZE / ONE_CHAIN_BUFFER_SIZE = TOTAL_CHAIN_COUNT
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#define HALF_CHAIN_COUNT (TOTAL_CHAIN_COUNT / 2)
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void spiCodecInit(void);
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void spiCodecStart(void);
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void spiCodecStop(void);
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void spiPwmCodecPlay(int16_t *buffer, uint32_t length);
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void spiSigmadeltaCodecPlay(int16_t *buffer, uint32_t length);
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void spiCodecCallback(uint32_t event);
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#endif
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