#include "hpm_wm8960.h"
#include "hpm_math.h"
#include "hpm_i2s_drv.h"
#include "hpm_dao_drv.h"
#include "hpm_dma_drv.h"
#include "hpm_dmamux_drv.h"
#include "i2s_dma_chain.h"

Functions
	ATTR_RAMFUNC_WITH_ALIGNMENT (8)

void	i2s_dao_config (uint32_t sample_rate, uint8_t audio_depth, uint8_t channel_num)
	DAO I2S configuration ;DAO I2S配置 More...

void	dma_chain_transfer_config_tx (void)
	I2S TX DMA chain configuration ;I2S发送数据的DMA链配置 More...

void	dma_auto_config_tx (void)
	I2S TX DMA chain start ;I2S发送数据的DMA链启动 More...

void	i2s_dma_tx_init (void)
	I2S TX and DMA chain init ;发送数据的I2S和DMA链初始化 More...

void	tx_test (void)

void	fft_cal (rfft_type_t buf, rfft_type_t output, uint16_t points, uint16_t shift)
	FFT calculation:perform FFT calculation on the received audio data ;FFT计算：对接收到音频数据进行FFT运算 More...

void	dma_chain_transfer_config_rx (void)
	I2S RX DMA chain configuration ;I2S接收数据的DMA链配置 More...

void	dma_auto_config_rx (void)
	I2S RX DMA chain start ;I2S接收数据的DMA链启动 More...

void	codec_i2s_init (void)
	CODEC used for microphone I2S init ;麦克风使用的CODEC I2S初始化 More...

void	i2s_dma_rx_init (void)
	I2S RX and DMA chain init ;接收数据的I2S和DMA链初始化 More...

void	rx_data_process (void)
	processing received data ;处理接收的数据 More...

Variables
uint32_t	result [4]

u32_t	complete_count

int	mic_rx_test = 1

rfft_type_t	rfft_buf_r [FFT_POINTS]

rfft_type_t	rfft_buf_l [FFT_POINTS]

rfft_type_t	rfft_mag_output [FFT_POINTS]

int	test_buff [FFT_POINTS]

wm8960_control_t	wm8960_control

Function Documentation

◆ ATTR_RAMFUNC_WITH_ALIGNMENT()

ATTR_RAMFUNC_WITH_ALIGNMENT ( 8 )

◆ codec_i2s_init()

void codec_i2s_init ( void )

CODEC used for microphone I2S init ;麦克风使用的CODEC I2S初始化

◆ dma_auto_config_rx()

void dma_auto_config_rx ( void )

I2S RX DMA chain start ;I2S接收数据的DMA链启动

◆ dma_auto_config_tx()

void dma_auto_config_tx ( void )

I2S TX DMA chain start ;I2S发送数据的DMA链启动

◆ dma_chain_transfer_config_rx()

void dma_chain_transfer_config_rx ( void )

I2S RX DMA chain configuration ;I2S接收数据的DMA链配置

◆ dma_chain_transfer_config_tx()

void dma_chain_transfer_config_tx ( void )

I2S TX DMA chain configuration ;I2S发送数据的DMA链配置

◆ fft_cal()

void fft_cal	(	rfft_type_t *	buf,
		rfft_type_t *	output,
		uint16_t	points,
		uint16_t	shift
	)

FFT calculation:perform FFT calculation on the received audio data ;FFT计算：对接收到音频数据进行FFT运算

Parameters

[in]	buf	data buff that requires FFT calculation;需要进行FFT计算的数据buff
[in]	output	the sample depth of audio data,; ;FFT计算结果的输出buff
[in]	points	the number of data requiring FFT calculation;需要进行FFT计算的数据个数
[in]	shift	base 2 logarithm value of the sample number and it can be set from 4 to 14 ;以2为底的数据个数的对数值，可以设置为4到14

◆ i2s_dao_config()

void i2s_dao_config	(	uint32_t	sample_rate,
		uint8_t	audio_depth,
		uint8_t	channel_num
	)

DAO I2S configuration ;DAO I2S配置

Parameters

[in]	sample_rate	the sample rate of audio data;播放音频的采样率
[in]	audio_depth	the sample depth of audio data,the supports sample depth are as follows: ;音频数据的通道宽度采样深度,支持的采样深度如下： i2s_audio_depth_16_bits: 16bits sample depth;16位采样深度 i2s_audio_depth_24_bits: 24bits sample depth;24位采样深度 i2s_audio_depth_32_bits: 32bits sample depth;32位采样深度
[in]	channel_num	the num of channels;通道数量

◆ i2s_dma_rx_init()

void i2s_dma_rx_init ( void )

I2S RX and DMA chain init ;接收数据的I2S和DMA链初始化

◆ i2s_dma_tx_init()

void i2s_dma_tx_init ( void )

I2S TX and DMA chain init ;发送数据的I2S和DMA链初始化

◆ rx_data_process()

void rx_data_process ( void )

processing received data ;处理接收的数据

◆ tx_test()

void tx_test ( void )

Variable Documentation

◆ complete_count

u32_t complete_count

◆ mic_rx_test

int mic_rx_test = 1

◆ result

uint32_t result[4]

◆ rfft_buf_l

rfft_type_t rfft_buf_l[FFT_POINTS]

◆ rfft_buf_r

rfft_type_t rfft_buf_r[FFT_POINTS]

◆ rfft_mag_output

rfft_type_t rfft_mag_output[FFT_POINTS]

◆ test_buff

int test_buff[FFT_POINTS]

◆ wm8960_control

wm8960_control_t wm8960_control

Initial value:

= {
    .ptr = CODEC_I2C,
    .slave_address = WM8960_I2C_ADDR, 
}

Functions

Variables