1、编写 init_i2s 函数,初始化 i2s 接口。 //I2S通道句柄statici2s_chan_handle_t iis_tx_ch;staticvoidinit_i2s() {//1、创建通道i2s_chan_config_t chcfg =I2S_CHANNEL_DEFAULT_CONFIG(I2S_NUM_0, I2S_ROLE_MASTER); ESP_ERROR_CHECK(i2
As soon as I enable i2s tx channel the on_sent callback fires continuously. I comment out i2s_channel_write statement to make sure nothing is being written to the tx dma buffers.Anyone have an idea why this would happen ?Thank youCode: Select all...
i2s_config_t i2s_config = { .mode = I2S_MODE_MASTER | I2S_MODE_TX, // 使用主模式并设置为发送数据 .sample_rate = 44100, // 设置采样率为44100Hz .bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT, // 设置每个采样点的位数为16位 .channel_format = I2S_CHANNEL_FMT_ONLY_LEFT, // 只使用...
i2s_config_t i2s_cfg = { .mode = I2S_MODE_MASTER | I2S_MODE_TX | I2S_MODE_RX, //设置i2s工作模式,根据需求设置 .sample_rate = EXAMPLE_SAMPLE_RATE,//设置I2S 采样率,根据音频确定采样率 .bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT,//设置采样位数 .channel_format = I2S_CHANNEL_FMT_RI...
dac_continuous_write(tx_chan, data, item_size, &bytes_written, -1); // #else // i2s_channel_write(tx_chan, data, item_size, &bytes_written, portMAX_DELAY); // #endif vRingbufferReturnItem(s_ringbuf_i2s, (void *)data); } } } } [/Codebox] Here is output: [Codebox] W (...
I2S包括两个声道(Left/Right)的数据,在主设备发出声道选择/字选择(WS)控制下进行左右声道数据切换。通过增加I2S接口的数目或其它I2S设备可以实现多声道(Multi-Channels)应用。 在I2S传输协议中,数据信号、时钟信号以及控制信号是分开传输的。I2S协议只定义三根信号线:时钟信号SCK、数据信号SD和左右声道选择信号WS。
whether sending I2S data synchronously (using i2s_channel_enable, i2s_channel_write, i2s_channel_disable) or asynchronously (using i2s_channel_preload_data, i2s_channel_enable, on_sent ISR callback, i2s_channel_disable), it seems that in both cases my I2S transmissions are cut short. ...
ESP32的I2S接口可以输出TDM信号。通过灵活配置其I2S控制器,ESP32能够支持时分复用(TDM)格式,适用于多通道音频传输等场景。 关键配置点: 模式选择: 需将I2S设置为I2S_MODE_MASTER | I2S_MODE_TX(主模式+发送模式)。 通道格式: 使用I2S_CHANNEL_FMT_MULTIPLE配置多通道,启用TDM的多通道传输能力。
.channel_format = I2S_CHANNEL_FMT_ONLY_RIGHT, .intr_alloc_flags =0, .dma_buf_count =2, .dma_buf_len =1024, .use_apll =1, };//install and start i2s driveri2s_driver_install(i2s_num, &i2s_config,0,NULL);//init DAC padi2s_set_dac_mode(I2S_DAC_CHANNEL_RIGHT_EN);// maps to...
(34),mode=I2S.TX,bits=16,format=I2S.STEREO,rate=44100,ibuf=40000)# 创建I2S对象i2s.write(buf)# 将音频样本的缓冲区写入I2S设备i2s=I2S(1,sck=Pin(33),ws=Pin(25),sd=Pin(32),mode=I2S.RX,bits=16,format=I2S.MONO,rate=22050,ibuf=40000)# 创建I2S对象i2s.readinto(buf)# 用I2S设备的音频...