移植FreeRTOS时报错

..\FreeRTOS\portable\RVDS\ARM_CM3\portmacro.h(73): error:  
#35: #error directive:
 configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.

双击跳转到错误代码段(portmacro.h)

#if ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
    typedef uint16_t     TickType_t;
    #define portMAX_DELAY              ( TickType_t ) 0xffff
#elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
    typedef uint32_t     TickType_t;
    #define portMAX_DELAY              ( TickType_t ) 0xffffffffUL

/* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
 * not need to be guarded with a critical section. */
    #define portTICK_TYPE_IS_ATOMIC    1
#else
    #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
#endif

借助翻译软件可以发现报错的大概是因为tick的类型不支持，查找configTICK_TYPE_WIDTH_IN_BITS的定义在FreeRTOSConfig.h中

将类型改为32，或16位即可，

#define configTICK_TYPE_WIDTH_IN_BITS              TICK_TYPE_WIDTH_32_BITS