api change not needed now

esphome/components/logger/logger.h

@@ -418,7 +418,7 @@ class Logger : public Component {
 #endif
 #endif
   void process_messages_();
-  void write_msg_(const LogBuffer &buf);
+  void write_msg_(const char *msg, uint16_t len);
 
   // Format a log message with printf-style arguments and write it to a buffer with header, footer, and null terminator
   inline void HOT format_log_to_buffer_with_terminator_(uint8_t level, const char *tag, int line, const char *format,
@@ -455,7 +455,7 @@ class Logger : public Component {
   // Helper to write log buffer to console (replaces null terminator with newline and writes)
   inline void HOT write_to_console_(LogBuffer &buf) {
     buf.terminate_with_newline();
-    this->write_msg_(buf);
+    this->write_msg_(buf.data, buf.pos);
   }
 
   // Helper to write log buffer to console if logging is enabled

esphome/components/logger/logger_esp32.cpp

@@ -118,7 +118,7 @@ void Logger::pre_setup() {
   ESP_LOGI(TAG, "Log initialized");
 }
 
-void HOT Logger::write_msg_(const LogBuffer &buf) {
+void HOT Logger::write_msg_(const char *msg, uint16_t len) {
 #if defined(USE_LOGGER_UART_SELECTION_USB_CDC) || defined(USE_LOGGER_UART_SELECTION_USB_SERIAL_JTAG)
   // USB CDC/JTAG - single write including newline (already in buffer)
   // Use fwrite to stdout which goes through VFS to USB console
@@ -128,10 +128,10 @@ void HOT Logger::write_msg_(const LogBuffer &buf) {
   // This is compile-time selection, not runtime detection - if USB is configured, it's always used.
   // There is no fallback to regular UART if "USB isn't connected" - that's the user's responsibility
   // to configure correctly for their hardware. This approach eliminates runtime overhead.
-  fwrite(buf.data, 1, buf.pos, stdout);
+  fwrite(msg, 1, len, stdout);
 #else
   // Regular UART - single write including newline (already in buffer)
-  uart_write_bytes(this->uart_num_, buf.data, buf.pos);
+  uart_write_bytes(this->uart_num_, msg, len);
 #endif
 }
 

esphome/components/logger/logger_esp8266.cpp

@@ -28,9 +28,9 @@ void Logger::pre_setup() {
   ESP_LOGI(TAG, "Log initialized");
 }
 
-void HOT Logger::write_msg_(const LogBuffer &buf) {
+void HOT Logger::write_msg_(const char *msg, uint16_t len) {
   // Single write with newline already in buffer (added by caller)
-  this->hw_serial_->write(buf.data, buf.pos);
+  this->hw_serial_->write(msg, len);
 }
 
 const LogString *Logger::get_uart_selection_() {

esphome/components/logger/logger_host.cpp

@@ -3,7 +3,7 @@
 
 namespace esphome::logger {
 
-void HOT Logger::write_msg_(const LogBuffer &buf) {
+void HOT Logger::write_msg_(const char *msg, uint16_t len) {
   static constexpr size_t TIMESTAMP_LEN = 10;  // "[HH:MM:SS]"
   // tx_buffer_size_ defaults to 512, so 768 covers default + headroom
   char buffer[TIMESTAMP_LEN + 768];
@@ -15,8 +15,8 @@ void HOT Logger::write_msg_(const LogBuffer &buf) {
   size_t pos = strftime(buffer, TIMESTAMP_LEN + 1, "[%H:%M:%S]", &timeinfo);
 
   // Copy message (with newline already included by caller)
-  size_t copy_len = std::min(static_cast<size_t>(buf.pos), sizeof(buffer) - pos);
-  memcpy(buffer + pos, buf.data, copy_len);
+  size_t copy_len = std::min(static_cast<size_t>(len), sizeof(buffer) - pos);
+  memcpy(buffer + pos, msg, copy_len);
   pos += copy_len;
 
   // Single write for everything

esphome/components/logger/logger_libretiny.cpp

@@ -49,7 +49,7 @@ void Logger::pre_setup() {
   ESP_LOGI(TAG, "Log initialized");
 }
 
-void HOT Logger::write_msg_(const LogBuffer &buf) { this->hw_serial_->write(buf.data, buf.pos); }
+void HOT Logger::write_msg_(const char *msg, uint16_t len) { this->hw_serial_->write(msg, len); }
 
 const LogString *Logger::get_uart_selection_() {
   switch (this->uart_) {

esphome/components/logger/logger_rp2040.cpp

@@ -27,9 +27,9 @@ void Logger::pre_setup() {
   ESP_LOGI(TAG, "Log initialized");
 }
 
-void HOT Logger::write_msg_(const LogBuffer &buf) {
+void HOT Logger::write_msg_(const char *msg, uint16_t len) {
   // Single write with newline already in buffer (added by caller)
-  this->hw_serial_->write(buf.data, buf.pos);
+  this->hw_serial_->write(msg, len);
 }
 
 const LogString *Logger::get_uart_selection_() {

esphome/components/logger/logger_zephyr.cpp

@@ -63,18 +63,18 @@ void Logger::pre_setup() {
   ESP_LOGI(TAG, "Log initialized");
 }
 
-void HOT Logger::write_msg_(const LogBuffer &buf) {
+void HOT Logger::write_msg_(const char *msg, uint16_t len) {
   // Single write with newline already in buffer (added by caller)
 #ifdef CONFIG_PRINTK
   // Requires the debug component and an active SWD connection.
   // It is used for pyocd rtt -t nrf52840
-  k_str_out(const_cast<char *>(buf.data), buf.pos);
+  k_str_out(const_cast<char *>(msg), len);
 #endif
   if (this->uart_dev_ == nullptr) {
     return;
   }
-  for (uint16_t i = 0; i < buf.pos; ++i) {
-    uart_poll_out(this->uart_dev_, buf.data[i]);
+  for (uint16_t i = 0; i < len; ++i) {
+    uart_poll_out(this->uart_dev_, msg[i]);
   }
 }