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CC2541之npi更改为串口1,通讯失败

Other Parts Discussed in Thread: CC2541

各位好,

CC2541的npi更改为串口1,通讯失败了;

我只是修改了一个配置,就是HAL_UART_DMA  定义为2,在P16和P17口连接USB转串口工具,调试助手收发都不可以。

把HAL_UART_DMA  定义为1,又通讯正常了。

请问是什么原因呢。