我定义一个int8的整型,却用不了!部分代码
void SampleApp_MessageMSGCB( afIncomingMSGPacket_t *pkt )
{
int8 index=0;
index=index+2; //在这设置断点 会提示 IAR警告 
在这个函数里其它地方设断点,index数值 却是 unavailable 。这是什么情况呢。。求助啊
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