[rtdef] re-implement RT_UNUSED

bsp/at32/Libraries/rt_drivers/drv_gpio.c

@@ -205,11 +205,13 @@ rt_inline const struct pin_irq_map *get_pin_irq_map(uint32_t pinbit)
 static rt_err_t at32_pin_attach_irq(struct rt_device *device, rt_int32_t pin,
                                     rt_uint32_t mode, void (*hdr)(void *args), void *args)
 {
-    RT_UNUSED GPIO_Type *gpio_port;
+    GPIO_Type *gpio_port;
     uint16_t gpio_pin;
     rt_base_t level;
     rt_int32_t irqindex = -1;
 
+    RT_UNUSED(gpio_port);
+
     if (PIN_PORT(pin) < PIN_ATPORT_MAX)
     {
         gpio_port    =  PIN_ATPORT(pin);
@@ -251,11 +253,13 @@ static rt_err_t at32_pin_attach_irq(struct rt_device *device, rt_int32_t pin,
 
 static rt_err_t at32_pin_dettach_irq(struct rt_device *device, rt_int32_t pin)
 {
-    RT_UNUSED GPIO_Type *gpio_port;
+    GPIO_Type *gpio_port;
     uint16_t gpio_pin;
     rt_base_t level;
     rt_int32_t irqindex = -1;
 
+    RT_UNUSED(gpio_port);
+
     if (PIN_PORT(pin) < PIN_ATPORT_MAX)
     {
         gpio_port    =  PIN_ATPORT(pin);

bsp/lpc2148/drivers/serial.c

@@ -62,10 +62,12 @@ void rt_hw_serial_init(void);
 
 void rt_hw_uart_isr(struct rt_lpcserial* lpc_serial)
 {
-    RT_UNUSED rt_uint32_t iir;
+    rt_uint32_t iir;
 
     RT_ASSERT(lpc_serial != RT_NULL)
 
+    RT_UNUSED(iir);
+
     if (UART_LSR(lpc_serial->hw_base) & 0x01)
     {
         rt_base_t level;

bsp/lpc2478/drivers/serial.c

@@ -62,11 +62,13 @@ void rt_hw_serial_init(void);
 
 void rt_hw_uart_isr(int irqno, void *param)
 {
-    RT_UNUSED rt_uint32_t iir;
+    rt_uint32_t iir;
     struct rt_lpcserial* lpc_serial = (struct rt_lpcserial*)param;
 
     RT_ASSERT(lpc_serial != RT_NULL)
 
+    RT_UNUSED(iir);
+
     if (UART_LSR(lpc_serial->hw_base) & 0x01)
     {
         rt_base_t level;

bsp/mini4020/drivers/board.c

@@ -51,7 +51,9 @@ void rt_serial_handler(int vector, void *param)
 {
 	//rt_kprintf("in rt_serial_handler\n");
 	rt_int32_t stat = *(RP)UART0_IIR ;
-	RT_UNUSED char c;
+	char c;
+
+	RT_UNUSED(c);
 
 	/*Received data*/
 	if (((stat & 0x0E) >> 1) == 0x02)

bsp/mini4020/drivers/sdcard.c

@@ -263,11 +263,13 @@ static rt_err_t sd_readblock(rt_uint32_t address, rt_uint8_t *buf)
     U32 complete, i;
     rt_uint8_t temp;
     rt_err_t err;
-    RT_UNUSED rt_uint32_t discard;
+    rt_uint32_t discard;
 #ifdef USE_TIMEOUT
     rt_uint32_t to = 10;
 #endif
 
+    RT_UNUSED(discard);
+
     //rt_kprintf("in readblock:%x\n",address);
     //Clear all the errors & interrups
     *(RP)DMAC_INTINTERRCLR  |= 0x1;

include/rtdef.h

@@ -37,6 +37,7 @@
  * 2021-03-19     Meco Man     add security devices
  * 2021-05-10     armink       change version number to v4.0.4
  * 2021-11-19     Meco Man     change version number to v4.1.0
+ * 2021-12-21     Meco Man     re-implement RT_UNUSED
  */
 
 #ifndef __RT_DEF_H__
@@ -118,14 +119,14 @@ typedef rt_base_t                       rt_off_t;       /**< Type for offset */
 #define __CLANG_ARM
 #endif
 
+#define RT_UNUSED(x)                   ((void)x)
+
 /* Compiler Related Definitions */
 #if defined(__CC_ARM) || defined(__CLANG_ARM)           /* ARM Compiler */
     #include <stdarg.h>
     #define RT_SECTION(x)               __attribute__((section(x)))
-    #define RT_UNUSED                   __attribute__((unused))
     #define RT_USED                     __attribute__((used))
     #define ALIGN(n)                    __attribute__((aligned(n)))
-
     #define RT_WEAK                     __attribute__((weak))
     #define rt_inline                   static __inline
     /* module compiling */
@@ -133,19 +134,16 @@ typedef rt_base_t                       rt_off_t;       /**< Type for offset */
         #define RTT_API                 __declspec(dllimport)
     #else
         #define RTT_API                 __declspec(dllexport)
-    #endif
+    #endif /* RT_USING_MODULE */
-
 #elif defined (__IAR_SYSTEMS_ICC__)     /* for IAR Compiler */
     #include <stdarg.h>
     #define RT_SECTION(x)               @ x
-    #define RT_UNUSED
     #define RT_USED                     __root
     #define PRAGMA(x)                   _Pragma(#x)
     #define ALIGN(n)                    PRAGMA(data_alignment=n)
     #define RT_WEAK                     __weak
     #define rt_inline                   static inline
     #define RTT_API
-
 #elif defined (__GNUC__)                /* GNU GCC Compiler */
     #ifdef RT_USING_NEWLIB
         #include <stdarg.h>
@@ -156,10 +154,8 @@ typedef rt_base_t                       rt_off_t;       /**< Type for offset */
         #define va_start(v,l)           __builtin_va_start(v,l)
         #define va_end(v)               __builtin_va_end(v)
         #define va_arg(v,l)             __builtin_va_arg(v,l)
-    #endif
+    #endif /* RT_USING_NEWLIB */
-
     #define RT_SECTION(x)               __attribute__((section(x)))
-    #define RT_UNUSED                   __attribute__((unused))
     #define RT_USED                     __attribute__((used))
     #define ALIGN(n)                    __attribute__((aligned(n)))
     #define RT_WEAK                     __attribute__((weak))
@@ -168,7 +164,6 @@ typedef rt_base_t                       rt_off_t;       /**< Type for offset */
 #elif defined (__ADSPBLACKFIN__)        /* for VisualDSP++ Compiler */
     #include <stdarg.h>
     #define RT_SECTION(x)               __attribute__((section(x)))
-    #define RT_UNUSED                   __attribute__((unused))
     #define RT_USED                     __attribute__((used))
     #define ALIGN(n)                    __attribute__((aligned(n)))
     #define RT_WEAK                     __attribute__((weak))
@@ -177,7 +172,6 @@ typedef rt_base_t                       rt_off_t;       /**< Type for offset */
 #elif defined (_MSC_VER)
     #include <stdarg.h>
     #define RT_SECTION(x)
-    #define RT_UNUSED
     #define RT_USED
     #define ALIGN(n)                    __declspec(align(n))
     #define RT_WEAK
@@ -189,7 +183,6 @@ typedef rt_base_t                       rt_off_t;       /**< Type for offset */
      * GCC and MDK) compilers. See ARM Optimizing C/C++ Compiler 5.9.3 for more
      * details. */
     #define RT_SECTION(x)
-    #define RT_UNUSED
     #define RT_USED
     #define PRAGMA(x)                   _Pragma(#x)
     #define ALIGN(n)
@@ -199,7 +192,6 @@ typedef rt_base_t                       rt_off_t;       /**< Type for offset */
 #elif defined (__TASKING__)
     #include <stdarg.h>
     #define RT_SECTION(x)               __attribute__((section(x)))
-    #define RT_UNUSED                   __attribute__((unused))
     #define RT_USED                     __attribute__((used, protect))
     #define PRAGMA(x)                   _Pragma(#x)
     #define ALIGN(n)                    __attribute__((__align(n)))