static void IRAM_ATTR i2s_start_bus() { s_state->dma_desc_cur = 0; s_state->dma_received_count = 0; //s_state->dma_filtered_count = 0; esp_intr_disable(s_state->i2s_intr_handle); i2s_conf_reset(); I2S0.rx_eof_nu
通过合理配置DMA,ESP32的I2S能够实现高吞吐量、低延迟的数据传输,适用于对实时性敏感的嵌入式应用。
ESP32 I2S DMA中断 esp32外部中断 一、外部中断易出错总结 前言:这些问题都是我之前在工作中遇到的,后来觉得需要总结,自己记忆不好,所以在这个给自己打个mark。 一:触发方式 的外部中断是通过边沿来触发的,不支持电平触发; 二:外部中断分组 的每一个GPIO都能配置成一个外部中断触发源,STM32 通过根据引脚的序号...
esp_err_ti2s_driver_uninstall(i2s_port_ti2s_num) 下面这个函数用来向DMA写数据,但是这个函数可能被官方取消,以后用I2S_write来取代: inti2s_write_bytes(i2s_port_ti2s_num,constvoid *src, size_tsize, TickType_tticks_to_wait) esp_err_ti2s_write(i2s_port_ti2s_num,constvoid *src, size_tsize...
esp_err_ti2s_driver_uninstall(i2s_port_ti2s_num) 下面这个函数用来向DMA写数据,但是这个函数可能被官方取消,以后用I2S_write来取代: inti2s_write_bytes(i2s_port_ti2s_num,constvoid *src, size_tsize, TickType_tticks_to_wait) esp_err_ti2s_write(i2s_port_ti2s_num,constvoid *src, size_tsize...
*/esp_err_ti2s_adc_disable(i2s_port_t i2s_num);/** * @brief 将数据从I2S DMA接收缓存器读取到内存 * * @param i2s_num I2S端口值:I2S_NUM_0, I2S_NUM_1 * * @param dest 数据存入地址 * * @param size 需要读取的字节数 * * @param[out] bytes_read 读取到的字节数,如果超时,读取到的...
在ESP32 的 I2S(Inter-IC Sound)模块中,i2s_in_done_int是一个与输入(接收)数据相关的中断事件,表示 I2S 输入(接收)操作完成。以下是详细说明: 作用 当I2S 输入模式(例如从麦克风或其他设备接收音频数据)的DMA 缓冲区被填满时,该中断会被触发。开发者可以在此中断的服务函数中处理数据(例如读取、存储或转发)...
Re: ESP32-S2 External RAM / PSRAM + I2S LCD + DMAby faptastic » Tue May 21, 2024 5:27 am Thanks ESP_Sprite. If I used say the esp-camera example (https://github.com/espressif/esp32-camera) and re-write it to be an LCD output instead, do you think that could potentially do...
I am developing a hardware that requires a camera and DAC interfaces. I noticed that some ESP32s have two I2S channels, but only I2S0 can be driven for a camera interface and DMA DAC. Is there any hacks that could allow use different I2S channel for DMA DAC or camera? Can somehow ESP...
I would like to inquire about using I2S to transmit voice. If using DMA, I want to generate an interrupt after the data is transmitted, but I do n’t see the DMA interrupt in the ESP32 technical manual, so I would like to ask the people who have used it to share it. Thank you ...