[core] Move platform helper implementations into their own file (#9361)

esphome/components/esp32/helpers.cpp

@@ -0,0 +1,69 @@
+#include "esphome/core/helpers.h"
+
+#ifdef USE_ESP32
+
+#include "esp_efuse.h"
+#include "esp_efuse_table.h"
+#include "esp_mac.h"
+
+#include <freertos/FreeRTOS.h>
+#include <freertos/portmacro.h>
+#include "esp_random.h"
+#include "esp_system.h"
+
+namespace esphome {
+
+uint32_t random_uint32() { return esp_random(); }
+bool random_bytes(uint8_t *data, size_t len) {
+  esp_fill_random(data, len);
+  return true;
+}
+
+Mutex::Mutex() { handle_ = xSemaphoreCreateMutex(); }
+Mutex::~Mutex() {}
+void Mutex::lock() { xSemaphoreTake(this->handle_, portMAX_DELAY); }
+bool Mutex::try_lock() { return xSemaphoreTake(this->handle_, 0) == pdTRUE; }
+void Mutex::unlock() { xSemaphoreGive(this->handle_); }
+
+// only affects the executing core
+// so should not be used as a mutex lock, only to get accurate timing
+IRAM_ATTR InterruptLock::InterruptLock() { portDISABLE_INTERRUPTS(); }
+IRAM_ATTR InterruptLock::~InterruptLock() { portENABLE_INTERRUPTS(); }
+
+void get_mac_address_raw(uint8_t *mac) {  // NOLINT(readability-non-const-parameter)
+#if defined(CONFIG_SOC_IEEE802154_SUPPORTED)
+  // When CONFIG_SOC_IEEE802154_SUPPORTED is defined, esp_efuse_mac_get_default
+  // returns the 802.15.4 EUI-64 address, so we read directly from eFuse instead.
+  if (has_custom_mac_address()) {
+    esp_efuse_read_field_blob(ESP_EFUSE_MAC_CUSTOM, mac, 48);
+  } else {
+    esp_efuse_read_field_blob(ESP_EFUSE_MAC_FACTORY, mac, 48);
+  }
+#else
+  if (has_custom_mac_address()) {
+    esp_efuse_mac_get_custom(mac);
+  } else {
+    esp_efuse_mac_get_default(mac);
+  }
+#endif
+}
+
+void set_mac_address(uint8_t *mac) { esp_base_mac_addr_set(mac); }
+
+bool has_custom_mac_address() {
+#if !defined(USE_ESP32_IGNORE_EFUSE_CUSTOM_MAC)
+  uint8_t mac[6];
+  // do not use 'esp_efuse_mac_get_custom(mac)' because it drops an error in the logs whenever it fails
+#ifndef USE_ESP32_VARIANT_ESP32
+  return (esp_efuse_read_field_blob(ESP_EFUSE_USER_DATA_MAC_CUSTOM, mac, 48) == ESP_OK) && mac_address_is_valid(mac);
+#else
+  return (esp_efuse_read_field_blob(ESP_EFUSE_MAC_CUSTOM, mac, 48) == ESP_OK) && mac_address_is_valid(mac);
+#endif
+#else
+  return false;
+#endif
+}
+
+}  // namespace esphome
+
+#endif  // USE_ESP32