add overlay config

esphome/components/logger/__init__.py

@@ -40,6 +40,7 @@ from esphome.components.libretiny.const import (
     COMPONENT_BK72XX,
     COMPONENT_RTL87XX,
 )
+from esphome.components.nrf52 import add_zephyr_overlay
 
 CODEOWNERS = ["@esphome/core"]
 logger_ns = cg.esphome_ns.namespace("logger")
@@ -283,6 +284,7 @@ async def to_code(config):
             add_idf_sdkconfig_option("CONFIG_ESP_CONSOLE_USB_CDC", True)
         elif config[CONF_HARDWARE_UART] == USB_SERIAL_JTAG:
             add_idf_sdkconfig_option("CONFIG_ESP_CONSOLE_USB_SERIAL_JTAG", True)
+
     try:
         uart_selection(USB_SERIAL_JTAG)
         cg.add_build_flag("-DUSE_USB_SERIAL_JTAG")
@@ -294,6 +296,10 @@ async def to_code(config):
     except cv.Invalid:
         pass
 
+    if CORE.using_zephyr:
+        if config[CONF_HARDWARE_UART] == UART0:
+            add_zephyr_overlay("""&uart0 { status = "okay";};""")
+
     # Register at end for safe mode
     await cg.register_component(log, config)
 

esphome/components/logger/logger.h

@@ -37,7 +37,7 @@ enum UARTSelection {
 #else
   UART_SELECTION_UART0 = 0,
 #endif
-#if !defined(USE_NRF52) || defined(PIN_SERIAL2_RX) && defined(PIN_SERIAL2_TX)
+#ifndef USE_NRF52
   UART_SELECTION_UART1,
 #endif
 #if defined(USE_LIBRETINY) || defined(USE_ESP32_VARIANT_ESP32)
@@ -147,20 +147,17 @@ class Logger : public Component {
   char *tx_buffer_{nullptr};
   int tx_buffer_at_{0};
   int tx_buffer_size_{0};
-#if defined(USE_ESP32) || defined(USE_ESP8266) || defined(USE_RP2040)
+#if defined(USE_ESP32) || defined(USE_ESP8266) || defined(USE_RP2040) || defined(USE_NRF52)
   UARTSelection uart_{UART_SELECTION_UART0};
-#endif
-#ifdef USE_NRF52
-  UARTSelection uart_{UART_SELECTION_USB_CDC};
-#endif
-#ifdef USE_LIBRETINY
+#elif defined(USE_LIBRETINY)
   UARTSelection uart_{UART_SELECTION_DEFAULT};
 #endif
 #ifdef USE_ARDUINO
   Stream *hw_serial_{nullptr};
-#endif
-#ifdef USE_ESP_IDF
+#elif defined(USE_ESP_IDF)
   uart_port_t uart_num_;
+#elif defined(USE_ZEPHYR)
+  const struct device * uart_dev_{nullptr};
 #endif
   struct LogLevelOverride {
     std::string tag;

esphome/components/logger/logger_nrf52.cpp

@@ -8,32 +8,66 @@
 namespace esphome {
 namespace logger {
 
+#ifdef USE_ZEPHYR
+// it must be inside namespace since there is duplicated macro EMPTY
+#include <zephyr/device.h>
+#include <zephyr/drivers/uart.h>
+#include <zephyr/usb/usb_device.h>
+#endif
+
 static const char *const TAG = "logger";
 
 void Logger::pre_setup() {
   if (this->baud_rate_ > 0) {
+#ifdef USE_ARDUINO
     switch (this->uart_) {
       case UART_SELECTION_UART0:
         this->hw_serial_ = &Serial1;
         Serial1.begin(this->baud_rate_);
         break;
-#if defined(PIN_SERIAL2_RX) && defined(PIN_SERIAL2_TX)
-      case UART_SELECTION_UART1:
-        this->hw_serial_ = &Serial2;
-        Serial2.begin(this->baud_rate_);
-        break;
-#endif
       case UART_SELECTION_USB_CDC:
         this->hw_serial_ = &Serial;
         Serial.begin(this->baud_rate_);
         break;
     }
+#elif defined(USE_ZEPHYR)
+    static const struct device *uart_dev = nullptr;
+    switch (this->uart_) {
+      case UART_SELECTION_UART0:
+        uart_dev = DEVICE_DT_GET_OR_NULL(DT_NODELABEL(uart0));
+        break;
+      case UART_SELECTION_USB_CDC:
+          uart_dev =  DEVICE_DT_GET_OR_NULL(zephyr_cdc_acm_uart);
+          if(device_is_ready(uart_dev)) {
+            usb_enable(NULL);
+          }
+        break;
+    }
+    if (!device_is_ready(uart_dev)) {
+      ESP_LOGE(TAG, "%s is not ready.", get_uart_selection_());
+    } else {
+      uart_dev_ = uart_dev;
+    }
+#endif
   }
   global_logger = this;
   ESP_LOGI(TAG, "Log initialized");
 }
 
-const char *const UART_SELECTIONS[] = {"USB_CDC"};
+#ifdef USE_ZEPHYR
+void HOT Logger::write_msg_(const char *msg) {
+  if(nullptr == uart_dev_) {
+    return;
+  }
+  while(*msg) {
+    uart_poll_out(uart_dev_, *msg);
+    ++msg;
+  }
+  uart_poll_out(uart_dev_, '\n');
+}
+#endif
+
+const char *const UART_SELECTIONS[] = {"UART0", "USB_CDC"};
 
 const char *Logger::get_uart_selection_() { return UART_SELECTIONS[this->uart_]; }
 

esphome/components/nrf52/__init__.py

@@ -27,6 +27,7 @@ KEY_NRF52 = "nrf52"
 def set_core_data(config):
     CORE.data[KEY_NRF52] = {}
     CORE.data[KEY_NRF52][KEY_PRJ_CONF_OPTIONS] = {}
+    CORE.data[KEY_NRF52][KEY_ZEPHYR_OVERLAY] = ""
     CORE.data[KEY_CORE][KEY_TARGET_PLATFORM] = PLATFORM_NRF52
     CORE.data[KEY_CORE][KEY_TARGET_FRAMEWORK] = config[CONF_FRAMEWORK][CONF_TYPE]
     return config
@@ -103,6 +104,7 @@ nrf52_ns = cg.esphome_ns.namespace("nrf52")
 
 PrjConfValueType = Union[bool, str, int]
 KEY_PRJ_CONF_OPTIONS = "prj_conf_options"
+KEY_ZEPHYR_OVERLAY = "zephyr_overlay"
 
 
 def add_zephyr_prj_conf_option(name: str, value: PrjConfValueType):
@@ -118,6 +120,12 @@ def add_zephyr_prj_conf_option(name: str, value: PrjConfValueType):
     CORE.data[KEY_NRF52][KEY_PRJ_CONF_OPTIONS][name] = value
 
 
+def add_zephyr_overlay(content):
+    if not CORE.using_zephyr:
+        raise ValueError("Not an zephyr project")
+    CORE.data[KEY_NRF52][KEY_ZEPHYR_OVERLAY] += content
+
+
 @coroutine_with_priority(1000)
 async def to_code(config):
     cg.add(nrf52_ns.setup_preferences())
@@ -206,10 +214,6 @@ def _format_prj_conf_val(value: PrjConfValueType) -> str:
     raise ValueError
 
 
-overlay = """
-"""
-
-
 # Called by writer.py
 def copy_files():
     if CORE.using_zephyr:
@@ -223,7 +227,10 @@ def copy_files():
         )
 
         write_file_if_changed(CORE.relative_build_path("zephyr/prj.conf"), contents)
-        write_file_if_changed(CORE.relative_build_path("zephyr/app.overlay"), overlay)
+        write_file_if_changed(
+            CORE.relative_build_path("zephyr/app.overlay"),
+            CORE.data[KEY_NRF52][KEY_ZEPHYR_OVERLAY],
+        )
 
     dir = os.path.dirname(__file__)
     build_zephyr_file = os.path.join(