Z-Stack协议栈 请问SampleAPP默认总线时钟是16MHZ 吗？

默认你是说上电后还是初始化后，初始化后是32Mhz.
上电时，都是关闭的，进入active 16MRC和32M晶振都会打开，然后就根据你的选择。

#define HAL_BOARD_INIT()                                        
[                                                               
  uint16 i;                                                     
                                                                
  SLEEPCMD &= ~OSC_PD;                       /* turn on 16MHz RC and 32MHz XOSC */               
  while (!(SLEEPSTA & XOSC_STB));            /* wait for 32MHz XOSC stable */                    
  asm("NOP");                                /* chip bug workaround */                           
  for (i=0; i<504; i++) asm("NOP");          /* Require 63us delay for all revs */               
  CLKCONCMD = (CLKCONCMD_32MHZ | OSC_32KHZ); /* Select 32MHz XOSC and the source for 32K clock */
  while (CLKCONSTA != (CLKCONCMD_32MHZ | OSC_32KHZ)); /* Wait for the change to be effective */  
  SLEEPCMD |= OSC_PD;                        /* turn off 16MHz RC */                             
                                                                
  /* Turn on cache prefetch mode */                             
  PREFETCH_ENABLE();                                            
                                                                
  HAL_TURN_OFF_LED1();                                          
  LED1_DDR |= LED1_BV;                                          
  HAL_TURN_OFF_LED2();                                          
  LED2_DDR |= LED2_BV;                                          
  HAL_TURN_OFF_LED3();                                          
  LED3_DDR |= LED3_BV;                                          
                                                                
  /* configure tristates */                                     
  P0INP |= PUSH2_BV;                                            
]
                                                                          

在我没有做任何更改的情况下，总线频率是32MHZ ？延时程序老是做不好，所以想咨询一下初始化后的总线频率

是啊，初始化程序都贴给你看了。延迟是硬delay还是软delay, us 还是ms?
                                                                          

us，输出输入延迟