101 lines
2.8 KiB
C
101 lines
2.8 KiB
C
#ifndef _AUDIO_LINK_H_
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#define _AUDIO_LINK_H_
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//ch_num
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#define ALINK_CH0 0
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#define ALINK_CH1 1
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#define ALINK_CH2 2
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#define ALINK_CH3 3
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#define ALNK_BUF_POINTS_NUM 128
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typedef enum {
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ALINK0_PORTA, //MCLK:PA2 SCLK:PA3 lRCK:PA4 CH0:PA0 CH1:PA1 CH2:PA5 CH3:PA6
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ALINK0_PORTB, //MCLK:PC2 SCLK:PA5 LRCK:PA6 CH0:PA0 CH1:PA2 CH2:PA3 CH3:PA4
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} ALINK_PORT;
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//ch_dir
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typedef enum {
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ALINK_DIR_TX = 0u,
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ALINK_DIR_RX ,
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} ALINK_DIR;
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typedef enum {
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ALINK_LEN_16BIT = 0u,
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ALINK_LEN_24BIT , //ALINK_FRAME_MODE需要选择: ALINK_FRAME_64SCLK
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} ALINK_DATA_WIDTH;
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//ch_mode
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typedef enum {
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ALINK_MD_NONE = 0u,
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ALINK_MD_IIS ,
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ALINK_MD_IIS_LALIGN ,
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ALINK_MD_IIS_RALIGN ,
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ALINK_MD_DSP0 ,
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ALINK_MD_DSP1 ,
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} ALINK_MODE;
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//ch_mode
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typedef enum {
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ALINK_ROLE_MASTER, //主机
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ALINK_ROLE_SLAVE, //从机
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} ALINK_ROLE;
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typedef enum {
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ALINK_CLK_FALL_UPDATE_RAISE_SAMPLE, //下降沿更新数据, 上升沿采样数据
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ALINK_CLK_RAISE_UPDATE_FALL_SAMPLE, //上降沿更新数据, 下升沿采样数据
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} ALINK_CLK_MODE;
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typedef enum {
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ALINK_FRAME_32SCLK, //32 sclk/frame
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ALINK_FRAME_64SCLK, //64 sclk/frame
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} ALINK_FRAME_MODE;
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typedef enum {
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ALINK_SR_48000 = 48000,
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ALINK_SR_44100 = 44100,
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ALINK_SR_32000 = 32000,
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ALINK_SR_24000 = 24000,
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ALINK_SR_22050 = 22050,
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ALINK_SR_16000 = 16000,
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ALINK_SR_12000 = 12000,
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ALINK_SR_11025 = 11025,
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ALINK_SR_8000 = 8000,
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} ALINK_SR;
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struct alnk_ch_cfg {
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u8 enable;
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ALINK_DIR dir; //通道传输数据方向: Tx, Rx
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void *buf; //dma buf地址
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void (*isr_cb)(u8 ch, s16 *buf, u32 len);
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};
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//===================================//
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//多个通道使用需要注意:
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//1.数据位宽需要保持一致
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//2.buf长度相同
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//===================================//
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typedef struct _ALINK_PARM {
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u8 port_select;
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struct alnk_ch_cfg ch_cfg[4]; //通道内部配置
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ALINK_MODE mode; //IIS, left, right, dsp0, dsp1
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ALINK_ROLE role; //主机/从机
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ALINK_CLK_MODE clk_mode; //更新和采样边沿
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ALINK_DATA_WIDTH bitwide; //数据位宽16/32bit
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ALINK_FRAME_MODE sclk_per_frame; //32/64 sclk/frame
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u16 dma_len; //buf长度: byte
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ALINK_SR sample_rate; //采样率
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} ALINK_PARM;
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int alink_init(ALINK_PARM *parm); //iis 初始化
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int alink_start(ALINK_PORT port); //iis 开启
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void alink_uninit(ALINK_PORT port); //iis 退出
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void alink_channel_init(ALINK_PORT port, u8 ch_idx, u8 dir, void (*handle)(u8 ch, s16 *buf, u32 len)); //iis 打开通道
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void alink_channel_close(ALINK_PORT port, u8 ch_idx); //iis 关闭通道
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int alink_sr_set(ALINK_PORT port, u16 sr); //iis 设置采样率
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void audio_link_init(ALINK_PORT port);
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void audio_link_uninit(ALINK_PORT port);
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#endif
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