外设 API
- Analog to Digital Converter (ADC) Oneshot Mode Driver
 - Analog to Digital Converter (ADC) Continuous Mode Driver
 - Analog to Digital Converter (ADC) Calibration Driver
 - Clock Tree
 - Event Task Matrix (ETM)
 - GPIO & RTC GPIO
 - 通用定时器
 - 专用 GPIO
 - Hash-based Message Authentication Code (HMAC)
 - Digital Signature (DS)
 - I2C 驱动程序
 - Inter-IC Sound (I2S)
 - LCD
 - LED PWM 控制器
 - Motor Control Pulse Width Modulator (MCPWM)
 - Parallel IO
 - 脉冲计数器 (PCNT)
 - Remote Control Transceiver (RMT)
 - SD Pull-up Requirements
 - SD SPI Host Driver
 - SDIO Card Slave Driver
 - Sigma-Delta Modulation (SDM)
 - SPI Flash API
 - SPI Master Driver
 - SPI 从机驱动程序
 - Temperature Sensor
 - Two-Wire Automotive Interface (TWAI)
 - 通用异步接收器/发送器 (UART)
 
本部分的 API 示例代码存放在 ESP-IDF 示例项目的 peripherals 目录下。