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TI工程师们，请问下CC2540通过DMA的方式写flash前需要先映射到XDATA区吗？
不需要！
uint16 addr = (offset >> 2) + ((uint16)pg << 9);那这里的offest跟pg为什么要除以4呢？
需要映射到XDATA The DMA controller controls data transfers over the entire address range in XDATA memory space
