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cc2640r2f 要保证系统正常运行、需预留多大内存空间?

编译后、map文件显示存储器使用情况如下:  

92 516 bytes of readonly  code memory
10 390 bytes of readonly  data memory
16 245 bytes of readwrite data memory

再增加几百字节的变量后,内存溢出。

请教各位:

1、这种情况下是否影响协议栈的动态内存分配?

2、系统堆heap的大小如何配置?是否已经占用的内存空间?如果占用了能否适当减小?