refactor: sync from template - ENABLE/DISABLE macro pattern

- board_config.h: replace #define/#undef with ENABLE/DISABLE constants
- All debug switches use ENABLE/DISABLE instead of define/undef
- Replace #ifdef with #if MACRO == ENABLE across all sources
- Sync updated README documentation

Inc/board_config.h

@@ -1,6 +1,14 @@
 #ifndef BOARD_CONFIG_H
 #define BOARD_CONFIG_H
 
+#ifndef DISABLE
+#define DISABLE 0
+#endif
+
+#ifndef ENABLE
+#define ENABLE  1
+#endif
+
 #define GD32E23XF4          0x10
 #define GD32E23XF6          0x20
 #define GD32E23XF8          0x40
@@ -11,30 +19,25 @@
 
 /* >>>>>>>>>>>>>>>>>>>>[IIC TYPE DEFINE]<<<<<<<<<<<<<<<<<<<< */
 
-// #define SOFTWARE_IIC // IIC Type : Software IIC
-#undef  SOFTWARE_IIC // IIC Type : Hardware IIC
+#define SOFTWARE_IIC         DISABLE  // DISABLE: Hardware IIC; ENABLE: Software IIC
 
 /* >>>>>>>>>>>>>>>>>>>>[DEBUG MODE]<<<<<<<<<<<<<<<<<<<< */
 
-// #define DEBUG_MODE // Operating Mode : Debug Mode
-#undef  DEBUG_MODE // Operating Mode : Release Mode
+#define DEBUG_MODE           DISABLE  // DISABLE: Release Mode; ENABLE: Debug Mode
 
 /* >>>>>>>>>>>>>>>>>>>>[COMMAND DEBUG]<<<<<<<<<<<<<<<<<<<< */
 
-// #define COM_DEBUG // Enable Command Debug Information
-#undef  COM_DEBUG // Disable Command Debug Information
+#define COM_DEBUG            DISABLE  // DISABLE: Command debug off; ENABLE: Command debug on
 
 /* >>>>>>>>>>>>>>>>>>>>[DEBUG ASSERTIONS DEFINE]<<<<<<<<<<<<<<<<<<<< */
 
-// #define DEBUG_VERBOSE // Debug Assertions Status : Debug Verbose Information
-#undef  DEBUG_VERBOSE // Debug Assertions Status : No Debug Verbose Information
+#define DEBUG_VERBOSE        DISABLE  // DISABLE: Verbose debug off; ENABLE: Verbose debug on
 
 /* >>>>>>>>>>>>>>>>>>>>[SEGGER RTT DETECTION]<<<<<<<<<<<<<<<<<<<< */
 
-#define SEGGER_RTT_DETECTION // SEGGER RTT Detection : Enable
-// #undef  SEGGER_RTT_DETECTION // SEGGER RTT Detection : Disable
+#define SEGGER_RTT_DETECTION ENABLE   // DISABLE: SEGGER RTT off; ENABLE: SEGGER RTT on
 
-#ifdef SEGGER_RTT_DETECTION
+#if SEGGER_RTT_DETECTION == ENABLE
   #include "SEGGER_RTT.h"
   #define RTT_printf(ch, ...)     SEGGER_RTT_printf(ch, __VA_ARGS__)
   #define RTT_WriteString(ch, s)  SEGGER_RTT_WriteString(ch, s)

Inc/i2c.h

@@ -86,7 +86,9 @@ i2c_result_t i2c_bus_reset(void);
     \param[out] none
     \retval     none
 */
+#if DEBUG_VERBOSE == ENABLE
 void i2c_scan(void);
+#endif
 
 /*!
     \brief      write 16-bit data to I2C device
@@ -139,7 +141,7 @@ i2c_result_t i2c_read(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data, uint8
 */
 i2c_result_t i2c_read_raw(uint8_t slave_addr, uint8_t *data, uint8_t length);
 
-#ifdef DEBUG_VERBOSE
+#if DEBUG_VERBOSE == ENABLE
 /*!
     \brief      get status string for debugging
     \param[in]  status: i2c_result_t value