at91sam9260 笔记1
http://wenku.baidu.com/link?url=pK0w3c6oYX_phtiYN7PD97TivWFnwnu9yrie5b7HofmDXDVbuRciB35Izx_NGDiYz1U5PY7AB3cIkvLPY7-2YpZA0sbK20CuPzaakvLat-7
嵌入式系统
http://wenku.baidu.com/link?url=pK0w3c6oYX_phtiYN7PD97TivWFnwnu9yrie5b7HofmDXDVbuRciB35Izx_NGDiYz1U5PY7AB3cIkvLPY7-2YpZA0sbK20CuPzaakvLat-7