feat(slave_node): Enable UART console and printk

- Enable the console subsystem and printk for debugging output.
- Configure the console to use the UART peripheral (usart1 on PA9/PA10).
- Disable RTT to ensure UART is the active console.

software/apps/slave_node/CMakeLists.txt

@@ -2,9 +2,8 @@ cmake_minimum_required(VERSION 3.20)
 
 # Point BOARD_ROOT and DTS_ROOT to the 'software' directory, which contains 'boards'.
 list(APPEND BOARD_ROOT ${CMAKE_CURRENT_SOURCE_DIR}/../..)
-list(APPEND DTS_ROOT ${CMAKE_CURRENT_SOURCE_DIR}/../..)
 
 find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
 project(slave_node)
 
-target_sources(app PRIVATE src/main.c)
+target_sources(app PRIVATE src/main.c)

software/apps/slave_node/prj.conf

@@ -1,7 +1,9 @@
-# --- Base Slave Node Config ---
+# Enable Console and printk for logging
-CONFIG_GPIO=y
+CONFIG_CONSOLE=y
+CONFIG_PRINTK=y
 
-# Use RTT for console output instead of UART
+# Enable UART console
-CONFIG_USE_SEGGER_RTT=y
+CONFIG_UART_CONSOLE=y
-CONFIG_RTT_CONSOLE=y
+
-CONFIG_UART_CONSOLE=n
+# Disable RTT console to avoid conflicts
+CONFIG_RTT_CONSOLE=n