介紹了串行外設接口(SPI)在無線射頻芯片CC2420 和ARM 處理器AT91RM9200 接口中的
應用方案,給出了二者詳細的硬件連接圖和嵌入式Linux 下驅動的實現方法,該方法同樣適
合其他具有SPI 接口的芯片和微處理器之間的接口與編程.CC2420 和AT91RM9200 基于SPI
的串行通信為無線傳感器網絡提供了一個節點硬件平臺的解決方案.
關鍵詞: 嵌入式Linux; SPI; 驅動程序; AT91RM9200; CC2420
Abstract: This paper presents the application of SPI to the interface between the wireless RF
processor and the ARM microprocessor (AT91RM9200), and describes the connection of the
CC2420 and AT91RM9200 as well as its driver. The connection method is also applicable to the other wireless RF processor and microprocessor that have the functions of SPI. The serial
communication between CC2420 and AT91RM9200 based on the SPI also provides a solution
for the hardware node of wireless sensor network.
Key words: embedded Linux; SPI; driver; AT91RM9200; CC2420