在BLE-CC254x-1.4.0协议栈中定义HAL_UART_DMA的值为2,怎么在工程的预定义中实现。顺便问一下HAL_UART_DMA、HAL_UART_ISR有什么区别,一般二线制的串口选哪个……谢谢
Viki Shi:
DMA要优于ISR,占用CPU少。定义看这边: http://blog.csdn.net/shiwaxinbin/article/details/9004256
在BLE-CC254x-1.4.0协议栈中定义HAL_UART_DMA的值为2,怎么在工程的预定义中实现。顺便问一下HAL_UART_DMA、HAL_UART_ISR有什么区别,一般二线制的串口选哪个……谢谢
DMA要优于ISR,占用CPU少。定义看这边: http://blog.csdn.net/shiwaxinbin/article/details/9004256
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