hal.h

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#pragma once
#include <string>
#include <cstdint>
#include "gpio.h"
 
#if defined(USE_ESP32)
#include <esp_attr.h>
#ifndef PROGMEM
#define PROGMEM
#endif
 
#elif defined(USE_ESP8266)
 
#include <c_types.h>
#ifndef PROGMEM
#define PROGMEM ICACHE_RODATA_ATTR
#endif
 
#elif defined(USE_RP2040)
 
#define IRAM_ATTR __attribute__((noinline, long_call, section(".time_critical")))
#define PROGMEM
 
#else
 
#define IRAM_ATTR
#define PROGMEM
 
#endif
 
namespace esphome {
 
void yield();
uint32_t millis();
uint64_t millis_64();
uint32_t micros();
void delay(uint32_t ms);
void delayMicroseconds(uint32_t us);  // NOLINT(readability-identifier-naming)
void __attribute__((noreturn)) arch_restart();
void arch_init();
void arch_feed_wdt();
uint32_t arch_get_cpu_cycle_count();
uint32_t arch_get_cpu_freq_hz();
 
#ifdef USE_ESP8266
// ESP8266: pgm_read_* does real flash reads on Harvard architecture
uint8_t progmem_read_byte(const uint8_t *addr);
const char *progmem_read_ptr(const char *const *addr);
uint16_t progmem_read_uint16(const uint16_t *addr);
#else
// All other platforms: PROGMEM is a no-op, so these are direct dereferences
inline uint8_t progmem_read_byte(const uint8_t *addr) { return *addr; }
inline const char *progmem_read_ptr(const char *const *addr) { return *addr; }
inline uint16_t progmem_read_uint16(const uint16_t *addr) { return *addr; }
#endif
 
}  // namespace esphome