EspPio.h File Reference

ESP32 RMT-based Programmable IO Channel implementation with ESP-IDF v5.5+ features. More...

#include "BasePio.h"
#include "EspTypes.h"
#include "PlatformMutex.h"
#include <array>
#include "driver/rmt_encoder.h"
#include "driver/rmt_rx.h"
#include "driver/rmt_tx.h"

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Classes
struct	hf_pio_channel_statistics_t
class	EspPio
	ESP32 RMT-based Programmable IO Channel implementation with advanced ESP-IDF v5.5+ features. More...
struct	EspPio::ChannelState

Detailed Description

ESP32 RMT-based Programmable IO Channel implementation with ESP-IDF v5.5+ features.

This header provides a comprehensive PIO implementation for ESP32 microcontrollers using the advanced RMT (Remote Control Transceiver) peripheral with full ESP-IDF v5.5+ support. The RMT peripheral provides precise timing control, hardware buffering, DMA support, and advanced features ideal for high-performance PIO operations.

• The implementation supports:
• High-precision timing control (nanosecond resolution)
• Hardware symbol encoding/decoding with DMA
• Custom protocols, IR communication, and generic digital signaling
• Interrupt-driven operation with minimal CPU overhead
• Advanced carrier modulation and configurable idle levels
• ESP32-specific optimizations and ESP-IDF v5.5+ features
• True lazy initialization for optimal resource usage
• Thread-safe operation with comprehensive error handling

Author

Nebiyu Tadesse

Date

2025

Copyright

HardFOC

Note

Features include up to 8 RMT channels, nanosecond-level timing precision, hardware symbol encoding/decoding, interrupt-driven operation, support for IR, custom protocols, configurable idle levels, and carrier modulation.

Requires ESP32 with ESP-IDF v5.5+ for full advanced feature support.