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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic concept/concept topic concept" role="article" aria-labelledby="ariaid-title1"><span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/i2s/i2s_data_struct_lite.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">数据结构设计</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;">
|
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Read time: 2 minute(s)
|
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</div><div class="- topic/body concept/conbody body conbody"><section class="- topic/section section" id="i2s-data-struct-design__section_mhy_ryl_4dc" data-ofbid="i2s-data-struct-design__section_mhy_ryl_4dc"><h2 class="- topic/title title sectiontitle">HAL 层数据结构</h2>
|
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|
||
<div class="- topic/p p" data-ofbid="d87296e31__20250121171529">
|
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<ul class="- topic/ul ul" data-ofbid="d87296e33__20250121171529"><li class="- topic/li li" data-ofbid="d87296e34__20250121171529">
|
||
<div class="- topic/p p" data-ofbid="d87296e36__20250121171529"><span class="+ topic/ph sw-d/filepath ph filepath">hal_i2s.h</span>
|
||
的数据结构<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="i2s-data-struct-design__codeblock_fgm_3nf_fdc" data-ofbid="i2s-data-struct-design__codeblock_fgm_3nf_fdc"><strong class="hl-keyword">struct</strong> aic_i2s_buf_info
|
||
{
|
||
<strong class="hl-keyword">void</strong> *buf;
|
||
uint32_t buf_len;
|
||
uint32_t period_len;
|
||
};
|
||
|
||
<strong class="hl-keyword">struct</strong> aic_i2s_transfer_info
|
||
{
|
||
<strong class="hl-keyword">struct</strong> aic_dma_chan *dma_chan;
|
||
<strong class="hl-keyword">struct</strong> aic_audio_buf_info buf_info;
|
||
<strong class="hl-keyword">int</strong> transfer_type;
|
||
};
|
||
|
||
<strong class="hl-keyword">struct</strong> aic_i2s_ctrl
|
||
{
|
||
<strong class="hl-keyword">unsigned</strong> <strong class="hl-keyword">long</strong> reg_base;
|
||
uint32_t irq_num;
|
||
uint32_t clk_id;
|
||
uint32_t idx;
|
||
<strong class="hl-keyword">struct</strong> aic_audio_transfer_info tx_info; <em class="hl-comment">//TX buffer 的参数</em>
|
||
<strong class="hl-keyword">struct</strong> aic_audio_transfer_info rx_info; <em class="hl-comment">//RX buffer 的参数</em>
|
||
i2s_callback callback;
|
||
<strong class="hl-keyword">void</strong> *arg;
|
||
};</pre></div>
|
||
</li><li class="- topic/li li" data-ofbid="d87296e43__20250121171529">
|
||
<div class="- topic/p p" data-ofbid="d87296e45__20250121171529"><span class="+ topic/ph sw-d/filepath ph filepath">hal_i2s_format.h</span>
|
||
的数据结构<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="i2s-data-struct-design__codeblock_hq1_jnf_fdc" data-ofbid="i2s-data-struct-design__codeblock_hq1_jnf_fdc"><strong class="hl-keyword">typedef</strong> <strong class="hl-keyword">enum</strong>
|
||
{
|
||
I2S_MODE_MASTER,
|
||
I2S_MODE_SLAVE,
|
||
} i2s_mode_t;
|
||
|
||
<strong class="hl-keyword">typedef</strong> <strong class="hl-keyword">enum</strong>
|
||
{
|
||
I2S_PROTOCOL_I2S,
|
||
I2S_PROTOCOL_LEFT_J,
|
||
I2S_PROTOCOL_RIGHT_J,
|
||
I2S_PCM_SHORT,
|
||
I2S_PCM_LONG,
|
||
} i2s_protocol_t;
|
||
|
||
<strong class="hl-keyword">typedef</strong> <strong class="hl-keyword">enum</strong>
|
||
{
|
||
I2S_LEFT_POLARITY_LOW,
|
||
I2S_LEFT_POLARITY_HIGH,
|
||
} i2s_polarity_t;
|
||
|
||
<strong class="hl-keyword">typedef</strong> <strong class="hl-keyword">enum</strong>
|
||
{
|
||
I2S_SAMPLE_RATE_<span class="hl-number">8000</span> = <span class="hl-number">8000U</span>,
|
||
I2S_SAMPLE_RATE_<span class="hl-number">11025</span> = <span class="hl-number">11025U</span>,
|
||
I2S_SAMPLE_RATE_<span class="hl-number">12000</span> = <span class="hl-number">12000U</span>,
|
||
I2S_SAMPLE_RATE_<span class="hl-number">16000</span> = <span class="hl-number">16000U</span>,
|
||
I2S_SAMPLE_RATE_<span class="hl-number">22050</span> = <span class="hl-number">22050U</span>,
|
||
I2S_SAMPLE_RATE_<span class="hl-number">24000</span> = <span class="hl-number">24000U</span>,
|
||
I2S_SAMPLE_RATE_<span class="hl-number">32000</span> = <span class="hl-number">32000U</span>,
|
||
I2S_SAMPLE_RATE_<span class="hl-number">44100</span> = <span class="hl-number">44100U</span>,
|
||
I2S_SAMPLE_RATE_<span class="hl-number">48000</span> = <span class="hl-number">48000U</span>,
|
||
I2S_SAMPLE_RATE_<span class="hl-number">96000</span> = <span class="hl-number">96000U</span>,
|
||
I2S_SAMPLE_RATE_<span class="hl-number">192000</span> = <span class="hl-number">192000U</span>,
|
||
I2S_SAMPLE_RATE_<span class="hl-number">256000</span> = <span class="hl-number">256000U</span>,
|
||
} i2s_sample_rate_t;
|
||
|
||
<strong class="hl-keyword">typedef</strong> <strong class="hl-keyword">enum</strong>
|
||
{
|
||
I2S_SAMPLE_WIDTH_<span class="hl-number">8</span>BIT = <span class="hl-number">8U</span>,
|
||
I2S_SAMPLE_WIDTH_<span class="hl-number">12</span>BIT = <span class="hl-number">12U</span>,
|
||
I2S_SAMPLE_WIDTH_<span class="hl-number">16</span>BIT = <span class="hl-number">16U</span>,
|
||
I2S_SAMPLE_WIDTH_<span class="hl-number">20</span>BIT = <span class="hl-number">20U</span>,
|
||
I2S_SAMPLE_WIDTH_<span class="hl-number">24</span>BIT = <span class="hl-number">24U</span>,
|
||
I2S_SAMPLE_WIDTH_<span class="hl-number">28</span>BIT = <span class="hl-number">28U</span>,
|
||
I2S_SAMPLE_WIDTH_<span class="hl-number">32</span>BIT = <span class="hl-number">32U</span>,
|
||
} i2s_sample_width_t;
|
||
|
||
<strong class="hl-keyword">typedef</strong> <strong class="hl-keyword">enum</strong>
|
||
{
|
||
I2S_LEFT_CHANNEL,
|
||
I2S_RIGHT_CHANNEL,
|
||
I2S_LEFT_RIGHT_CHANNEL,
|
||
} i2s_sound_channel_t;
|
||
|
||
<strong class="hl-keyword">typedef</strong> <strong class="hl-keyword">enum</strong>
|
||
{
|
||
I2S_STREAM_PLAYBACK = <span class="hl-number">0</span>,
|
||
I2S_STREAM_RECORD = <span class="hl-number">1</span>,
|
||
} i2s_stream_t;
|
||
|
||
<strong class="hl-keyword">typedef</strong> <strong class="hl-keyword">struct</strong>
|
||
{
|
||
i2s_mode_t mode;
|
||
i2s_protocol_t protocol;
|
||
i2s_polarity_t polarity;
|
||
i2s_sample_rate_t rate;
|
||
i2s_sample_width_t width;
|
||
i2s_sound_channel_t channel;
|
||
uint32_t sclk_nfs;
|
||
uint32_t mclk_nfs;
|
||
i2s_stream_t stream;
|
||
} i2s_format_t;</pre></div>
|
||
</li></ul>
|
||
</div>
|
||
</section><section class="- topic/section section" id="i2s-data-struct-design__section_gtn_qyl_4dc" data-ofbid="i2s-data-struct-design__section_gtn_qyl_4dc"><h2 class="- topic/title title sectiontitle">Driver 层数据结构</h2>
|
||
|
||
<div class="- topic/p p" data-ofbid="d87296e59__20250121171529">
|
||
<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="i2s-data-struct-design__codeblock_yp3_mnf_fdc" data-ofbid="i2s-data-struct-design__codeblock_yp3_mnf_fdc"><strong class="hl-keyword">struct</strong> aic_i2s_sound
|
||
{
|
||
<strong class="hl-keyword">struct</strong> rt_audio_device audio;
|
||
aic_i2s_ctrl i2s;
|
||
<strong class="hl-keyword">struct</strong> codec *codec;
|
||
i2s_format_t format; <em class="hl-comment">//i2s 的传输格式</em>
|
||
rt_uint8_t volume; <em class="hl-comment">//playback 音量</em>
|
||
<strong class="hl-keyword">char</strong> *name; <em class="hl-comment">//设备名</em>
|
||
uint32_t i2s_idx;
|
||
uint8_t record_idx;
|
||
};
|
||
|
||
<strong class="hl-keyword">static</strong> <strong class="hl-keyword">struct</strong> aic_i2s_sound snd_dev[] =
|
||
{
|
||
#ifdef AIC_USING_I2S0
|
||
{
|
||
.name = <span class="hl-string">"i2s0_sound"</span>,
|
||
.i2s_idx = <span class="hl-number">0</span>,
|
||
},
|
||
#endif
|
||
#ifdef AIC_USING_I2S1
|
||
{
|
||
.name = <span class="hl-string">"i2s1_sound"</span>,
|
||
.i2s_idx = <span class="hl-number">1</span>,
|
||
},
|
||
#endif
|
||
};</pre>
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</div>
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</section></div></article></main></div>
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<div class=" wh_topic_toc "><div class="wh_topic_label">在本页上</div><ul><li class="section-item"><div class="section-title"><a href="#i2s-data-struct-design__section_mhy_ryl_4dc" data-tocid="i2s-data-struct-design__section_mhy_ryl_4dc">HAL 层数据结构</a></div></li><li class="section-item"><div class="section-title"><a href="#i2s-data-struct-design__section_gtn_qyl_4dc" data-tocid="i2s-data-struct-design__section_gtn_qyl_4dc">Driver 层数据结构</a></div></li></ul></div>
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