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

esphome/components/libretiny/helpers.cpp

@@ -0,0 +1,35 @@
+#include "esphome/core/helpers.h"
+
+#ifdef USE_LIBRETINY
+
+#include "esphome/core/hal.h"
+
+#include <WiFi.h>  // for macAddress()
+
+namespace esphome {
+
+uint32_t random_uint32() { return rand(); }
+
+bool random_bytes(uint8_t *data, size_t len) {
+  lt_rand_bytes(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)
+  WiFi.macAddress(mac);
+}
+
+}  // namespace esphome
+
+#endif  // USE_LIBRETINY