Separate logger implementations for each hardware platform into different files (#6167)

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
Co-authored-by: Keith Burzinski <kbx81x@gmail.com>

esphome/components/logger/logger_libretiny.cpp

@@ -0,0 +1,62 @@
+#ifdef USE_LIBRETINY
+#include "logger.h"
+
+namespace esphome {
+namespace logger {
+
+static const char *const TAG = "logger";
+
+void Logger::pre_setup() {
+  if (this->baud_rate_ > 0) {
+    switch (this->uart_) {
+#if LT_HW_UART0
+      case UART_SELECTION_UART0:
+        this->hw_serial_ = &Serial0;
+        Serial0.begin(this->baud_rate_);
+        break;
+#endif
+#if LT_HW_UART1
+      case UART_SELECTION_UART1:
+        this->hw_serial_ = &Serial1;
+        Serial1.begin(this->baud_rate_);
+        break;
+#endif
+#if LT_HW_UART2
+      case UART_SELECTION_UART2:
+        this->hw_serial_ = &Serial2;
+        Serial2.begin(this->baud_rate_);
+        break;
+#endif
+      default:
+        this->hw_serial_ = &Serial;
+        Serial.begin(this->baud_rate_);
+        if (this->uart_ != UART_SELECTION_DEFAULT) {
+          ESP_LOGW(TAG, "  The chosen logger UART port is not available on this board."
+                        "The default port was used instead.");
+        }
+        break;
+    }
+
+    // change lt_log() port to match default Serial
+    if (this->uart_ == UART_SELECTION_DEFAULT) {
+      this->uart_ = (UARTSelection) (LT_UART_DEFAULT_SERIAL + 1);
+      lt_log_set_port(LT_UART_DEFAULT_SERIAL);
+    } else {
+      lt_log_set_port(this->uart_ - 1);
+    }
+  }
+
+  global_logger = this;
+  ESP_LOGI(TAG, "Log initialized");
+}
+
+void HOT Logger::write_msg_(const char *msg) { this->hw_serial_->println(msg); }
+
+const char *const UART_SELECTIONS[] = {"DEFAULT", "UART0", "UART1", "UART2"};
+
+const char *Logger::get_uart_selection_() { return UART_SELECTIONS[this->uart_]; }
+
+}  // namespace logger
+}  // namespace esphome
+
+#endif  // USE_LIBRETINY